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LPCXpresso v7 User Guide

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1. initialise the inputs and outputs input buttonPushed 0 input reset 1 pt OuUEputs Out ledState_dispatch input amp out input reset 0 Replace the body of the while loop with a call to the delay function and the call to the dispatch function while 1 short_delay 10 slow it down ledState_dispatch input amp out auarare Generating the state machine code We now need to generate the code for the dispatch function With the state machine editor selected press the Generate Code button in the State Table panel This should add four files to your project The names of these files are defined in the State Machine Settings panel By default you should have the following files ledstate h Header file for the logic of the state machine ledstate c The logic of the state machine Contains the dispatch function and the input and output data structures ledState_actions h The header file for the action functions All information provided in this document is subject to legal disclaimers 2013 2014 NXP Semiconductors All rights reserved Rev 7 4 16 September 2014 105 NXP Semiconductors LPCXpresso v7 User Guide ledState_actions c The functions that are called by the state machine The ledstate_actions c file is initially empty It can be filled with the required template functions by pressing the Generate Action C Template button in the Actions pan
2. 18 3 10 Transition on button press The next transition is fired when the user presses the button that is when the input buttonPushea is non zero Add a signal and name it aiarusn Right click on the signal LPCXpresso v7 User Guide All information provided in this document is subject to legal disclaimers 2013 2014 NXP Semiconductors All rights reserved User Guide Rev 7 4 16 September 2014 102 NXP Semiconductors LPCXpresso v7 User Guide element in the bottom half and set it by selecting Input gt buttonPushed from the context menu Next add a transition from Green to yellow Click on Select to switch from transition adding mode and right click on the transition label to set the signal to adidpush Add the actions to turn off the green light and turn on the yellow light using the context right click menu A loop back transition incrementing a counter will be used to hold the light on yellow for a period First we set the timer variable to zero by adding the action Set timer To do this you right click on the transition label select Add Action gt SET gt timer To enter the value we need to edit the action element in the Action list The transition label identifies the action associated with it on its second line for example action 2 in this case Select action 2 in the Action List and you ll see the SET operation in the lower half of the Action List Click in the Value column and enter the number o se
3. 1 Project Explorer Peripherals Registers Views e The Project Explorer gives you a view of all the projects in your current Workspace e When debugging the Peripherals view allows you to display the registers within Peripherals e When debugging the Registers view allows you to display the registers within the CPU of your MCU 2 Editor e On the upper right is the editor which allows modification and saving of source code When debugging it is here that you will see the code you are executing and can step from line to line By pressing the i gt icon at the top of the Debug view you can switch to stepping by assembly instruction Clicking in the left margin will set and delete breakpoints 3 Console Problems Red Trace Views e On the lower right are the Console and Problems Views The Console View displays status information on compiling and debugging as well as semihosted program output The Problem View available by changing tabs shows all compiler errors and will allow easy navigation to the error location in the Editor View LPCXpresso v7 User Guide All information provided in this document is subject to legal disclaimers 2013 2014 NXP Semiconductors All rights reserved User Guide Rev 7 4 16 September 2014 15 NXP Semiconductors LPCXpresso v7 User Guide e Located in parallel with the Console View are the various views that make up the Red Trace functionality of LPCXpresso IDE The Red Tr
4. c ceeeeeeeeeeeaeeeeeeeeeeeeeeeaeaaenneeeeeees 91 179 17 FIGS generated seas R ER 91 17 9 2 ISSUES and WAMNINGS 00 0 cece ninn 92 17 10 Incorporating with yur Code sssrinin nen cece tee ee senate ee KE KRA UAA 92 18 Red State Software state machine tutorial 0ccceceeeeeee ee eeeeeeeeeeeeeeeaaeaeenees 93 18 1 Software state machine tutorial overview 0 ccccceeeeeeeeeeeeeeeeeteeeaeaaeees 93 18 1 1 Building a traffic light example cece eeeeeeee esac eeeeeeeeeeeeeeaeeaeaees 93 18 2 Creating a new project eee cect ee ee cece cece ae ea ete eeeeeeeeaeaaaaaaeeeeeeeeaeaaea 93 18 2 1 Importing the base Project 2 0 0 eect cece cents eeeeaaeeeeeeaaeeeeeeaaeeeees 93 18 3 Extending the LED Traffic base project ecccceseseeeeeeeeeeeeaeeneeeeeeeeeees 94 18 3 1 Add the state machine to the project cc eeeeeeceeeeeeeaeeeeeeeaaeeees 94 18 3 2 Adding states to the State Machine cccccecseeeeeeeeeeeeeeeeeees 96 1833 Adding MPU seriero A eatin eearetawaest cadieeaseeee teas tees 98 18 34 Adding OUTPUTS sesiis aeina ERE SEN 99 18 3 5 The Initial State and the Reset signal cccceeesseeeeeeeeeeeeeeaes 99 18 3 6 Adding a transition cceeeee cece enuan aAA NEKAK AUEK 100 18 3 7 Creating a SIQMal riismon aa E aaa 101 18 3 8 Adding a signal to a transition eee eeeeeeeeeeeeeeaaeeeeeeaaeeeees 102 18 3 9 Adding actions to
5. 16 September 2014 TI NXP Semiconductors LPCXpresso v7 User Guide Simple _ One Input Two inputs enable disable Figure 15 4 Simple ETM event configuration resource Watchpoint comparator 3 z _ Invert resource Figure 15 5 One Input ETM event configuration Simple One Input Two inputs resource 1 Watchpoint comparator 2 M invert resource 1 Oor and resource 2 Watchpoint comparator 3 X invert resource 2 Figure 15 6 Two Inputs ETM event configuration 15 3 5 Supported targets Instruction Trace is not supported on all targets It only works on targets which have the necessary hardware Instruction trace is currently supported on the following targets from NXP e LPC8xx MTB e LPC11U6x MTB e LPC18xx ETM ETB LPC43xx ETM ETB 15 4 Troubleshooting This section of the help provides solutions to common problems that you may encounter while using Instruction Trace 15 4 1 General Instruction Trace claims target not supported when it should be Instruction Trace caches some information about the target in the Launch configuration to reduce setup time In some cases this information may become corrupted Deleting the Launch configuration will force Instruction Trace to refresh this information LPCXpresso v7 User Guide All information provided in this document is subject to legal disclaimers 2013 2014 NXP Semiconductors All rights reserved User Guide Rev 7 4 16
6. Naming the inputs is very similar to naming the outputs Assign the name pown to input pin O CTIN_0 and RESET to input pin 6 CTIN_6 Inputs have no preset value see right panel of Figure 17 2 All information provided in this document is subject to legal disclaimers 2013 2014 NXP Semiconductors All rights reserved Rev 7 4 16 September 2014 83 NXP Semiconductors LPCXpresso v7 User Guide 17 6 17 7 17 7 1 17 7 2 17 7 3 LPCXpresso v7 User Guide User Guide Matching the timer A key feature of the SCT is the triggering of events based on the value of the timer To access this feature add a match input that will be high when the timer is equal to some value 1 Add a Low match by pressing the button in the input toolbar This will add a new input Change its name to maxcount and its type to Match Low 2 Add another input to store a value to compare with the low counter Name it speea and leave its type as const int Enter the value 40000 in the source column 3 In the row for maxcount choose speed from the drop down in the source column The input maxcount will be high when the 1 counter is equal to the value of speed The states The next step is to add the states that the SCT will be using The blinky state machine has four distinct states corresponding to each LED exclusively being on and one state corresponding to no LEDs being on It also has an extra virtual state described below The
7. cccccccceeccccsneeeeee ae eeeeeeaaeeeeeeeeeeeeeeaaeseeesaaeneeees 51 TAi OVANIN ecn EER N EERE N EAEEREN 51 13 2 Data Watch view S sisssccsicicachndeacacaihesetioveaeiadieivadinusasieasidieaiodeidiooe 51 13 216 ten Display ecni a EER R 53 13 22 Trace Display siioni iinsnii oni arai ia N E Aa 54 14 Red Trace Host Strings ITM eeeeeeeeeeeeeeeeennseesssserrirrnsrssssrrrrnrsrssssrrrrrrerse 55 TAT OQVGIVIOW onun N E AE R tens 55 14 2 Defining Host Strings 2 0 0 0 ceecccceeeeeeeeeee cece eae eeeeeeeeeeeeaaaaeeeeeeeeeeeeaaaaeeeees 55 14 3 Building the Host Strings Macros ccceeeeeeeee eee eeeeeeeeeeeeeeaeaaanneneeeees 57 14 4 Instrumenting your code 00 ieee cece cette ee ee cate eeeeaaeeeeeeaaeeeeeeaaaeeeeeaaieeees 57 14 5 Host Strings view a o ceccccsescsecseessessessessucsecsuecsecssesuesecssessussenseteseeseeees 58 15 Red Trace Instruction Trace cccccceeece cece ce eeee ee eeeeeeeeaaeeeeaeeesaeeeeaaeeeseeeeaaees 59 151 Getting Started issiria a a a aaa Ea 59 15 1 1 Configuring the Cortex M0 for Instruction Trace ccceeeeeees 59 15 1 2 Trace the most recently executed instructions ccccceeeeeeeeee es 60 15 1 3 Stop trace when a variable is Set ceeeseeseeseeeeeeeeeeeeeeeeeeeeeees 61 15 2 Concepts amp sisi aed ancien did eed RES 63 15 2 1 Instruction Trace Overview cccecececeeeeeeeseeeeeeeseeeeeeeseeeeeeeseenes 63 15 2 2 MTB Concep
8. Disabled or LinkAddress 0x00000000 Output all branches Debug Request Timestamps Figure 15 3 The advanced configuration dialog for the ETB ETM Event configuration An ETM event 66 is a boolean combination of up to two event resource inputs 66 The Instruction Trace Config view provides an easy way to build these events by allowing the user to choose the complexity of the event These are used for trace enablement and the trigger condition for example e The simplest option is a binary enabled disabled choice This is accessed by selecting the Simple tab Select enable for the Event to always be true or disable for the event to always be false See Figure 15 4 e To use a Single event resource select the One Input tab An event resource can be chosen from the drop down and the event will be true when the event resource is true Checking the Invert resouce box will cause the Event to be true when the event resource is false and visa versa See Figure 15 5 To combine two event resources select the Two Inputs tab The events can be chosen from the drop downs and the logical combination operation selected As with the One Input tab the resources can be inverted See Figure 15 6 The configuration on the visible tab is used when the Apply button is clicked LPCXpresso v7 User Guide All information provided in this document is subject to legal disclaimers 2013 2014 NXP Semiconductors All rights reserved User Guide Rev 7 4
9. Hello World project with the main routine containing a print Call which will cause the text to be displayed within the Console View of the LPCXpresso IDE This is implemented using semihosting functionality For more details please see the FAQ at http www pcware com content faq lpcxpresso using printf Once you have selected the appropriate project wizard you will be able to enter the name of your new project Then you will need to select the actual MCU that you will be targeting for this project It is important to ensure that the MCU you select matches the MCU that you will be running your application on This makes sure that appropriate compiler and linker options are used for the build as well as correctly setting up the debug connection Finally you will be presented with one or more Options pages that provide the ability to set a number of project specific options The options presented will depend upon which MCU you are targeting and the specific wizard that you selected and may also change between versions of the LPCXpresso IDE Note that if you have any doubts over any of the options then we would normally recommend leaving them set to their default values The following sections detail some of the options that you may see when running through a wizard LPCOpen Library Project Selection When creating an LPCOpen based project the first option page that you will see is the LPCOpen library selection
10. The LPCXpresso IDE includes many project templates to allow the rapid creation of correctly configured projects for specific MCUs Creating a project using the wizard Click on the New project option in the Start here tab of the Quickstart Panel to open up the Project Creation Wizard Now select the MCU family for which you wish to create a new project Note that in some cases a number of families of MCUs are grouped together at a top level just open up the appropriate expander to get to the specific part family that you require For example in Figure 5 1 the top level group ec11 Lpci2 is used to hold all LPC11 and LPC12 part families New project No wizard selected Choose a wizard for your MCU Wizard a LPC11 LPC12 LPC1102 LPC1104 LPC112x 4 LPCILA LPCOpen C Project LPCOpen C Static Library Project LPCOpen C Project LPCOpen C Static Library Project C Project C Project Semihosted C Static Library Project C Project C Static Library Project LPC11E6x enraar Figure 5 1 New Project wizard selection LPCXpresso v7 User Guide User Guide You can now select the type of project that you wish to create Most MCU families provide wizards for two forms of projects LPCOpen and non LPCOpen For more details on LPCOpen see Software drivers and examples 17 For both forms of projects the main wizards available are C Project e Creates a simpl
11. 2014 72 NXP Semiconductors LPCXpresso v7 User Guide LPCXpresso v7 User Guide User Guide Show Instruction Trace config view ES Press the Show Instruction Trace config view button ES to display the Instruction Trace config view This view will provide you with access to all of the trace buffer s configuration settings The Instruction Trace config view s contents depend on the features supported by your target See the following sections for more information on your target Cortex MO MTB 75 Cortex M3 ETB 76 Cortex M4 ETB 76 Note The target must be connected with your code downloaded and execution suspended before you can configure trace Download trace buffer amp Press the Download trace buffer amp button to download the content of the trace buffer from the target The data will be downloaded and decompressed The list of executed instructions will be entered into the Instruction View table Notes e The target must be suspended in order to perform this action e The content of the trace buffer can persist across resets on some targets The buffer is decompressed using the current code image If the code has changed since the data was entered in the buffer the decompresser s output will be garbage If no instructions are listed after downloading check your configuration to make sure that instruction trace started Link to source The Link to source B toggle button enables the linking of t
12. 4 2 1 Importing Examples for the LPCXpresso812 Development Board First of all assuming that you have not previously downloaded the appropriate LPCOpen package click on the Browse LPCOpen Packages which will open a web browser window Click on Download LPCOpen Packages link and then the link to the LPCOpen v2 xx for LPC8xx family devices and then choose the download for the LPCXpresso812 board Once the package has downloaded return to the Import Project s dialog and click on the Browse button next to Project archive zip and locate the LPCOpen LPCXpresso812 package archive previously downloaded Select the archive click Open and then click Next You will then be presented with a list of projects within the archive as shown in Figure 4 3 LPCXpresso v7 User Guide All information provided in this document is subject to legal disclaimers 2013 2014 NXP Semiconductors All rights reserved User Guide Rev 7 4 16 September 2014 19 NXP Semiconductors LPCXpresso v7 User Guide eonojn a TORRA aes Import project s Select a directory to search for existing Eclipse projects li Projects F Ipc_chip_8x_lib Ipc_chip_8x_lib V nxp_Ipcxpresso_812_board_lib nxp_lpcxpresso_812_board_lib F nxp_Ipcxpresso_812_freertos_blinky nxp_Ipcxpresso_812_freertos_blinky V nxp_lpcxpresso_812_periph_acmp nxp_lpcxpresso_812_periph_acmp F nxp_lpexpresso_812_periph_blinky nxp_lpcxpresso_812_periph_blinky F nxp_lpc
13. 689 809ms 1 517s 35 951s 413 390ms 0548 OxSfd psock_readto 1 0 k 1 1 100 287 458ms 287 458ms 37 180s 0 000ns Ox67c 0x745 uip_add32 i 0 0 1 164 689 789ms 689 789ms 36 778s 0 000ns 0x800 0 649 chksum 43 0 ae 75 50 217ms 1720s 35 748s 38835ms 034c 0963 uip_ipchksum 2 0 Be 2 29 51 241ms 767 859ms 36 700s 358 309ms 0 94 Oxalf upper_layer_chksum 2 0 2 2 69 767 777ms 893 627ms 36 574s 62925ms 0xa20 Oxaab uip_tepchksum 2 0 Baas 893 156ms 1517s 35951s 311 706ms Oxaac Oxabd Figure 11 1 Profile View e Cumulative samples This is the total number of PC samples that have occurred while executing the particular function e Cumulative samples This is the same as above but displayed as a percentage of total PC samples collected e Current samples Number of samples in this function in the last data collection refresh period Coverage Number of instructions in the function that have been seen to have been executed e Coverage Bitmap the coverage bitmap has 1 bit for each half word in the function The bit corresponding to the address of each sampled PC is set Most Cortex M instructions are 16 bits one half word in length However there are some instructions that are 32 bits two half words The bit corresponding to the second halfword of a 32 bit instruction will never be set e First This is the first time relative to the start time of tracing that the function was sampled e Last
14. All information provided in this document is subject to legal disclaimers 2013 2014 NXP Semiconductors All rights reserved User Guide Rev 7 4 16 September 2014 104 NXP Semiconductors LPCXpresso v7 User Guide 18 4 1 18 4 2 LPCXpresso v7 User Guide User Guide The state machine is updated by calling its dispatch function with inputs and outputs The name of the dispatch function can be set in the State Machine Settings panel Its default name is ledstate_dispatch for this example The inputs and outputs for the state machine are defined by two structs in the main header file e g 1edstate h Editing main The main function in main_ledflash c contains a while loop which increments a variable We will be replacing the content of that while loop with a call to the dispatch function First we need to set up the inputs and outputs The input struct will be a global variable whose type is defined in 1edstate h Add the ledstate h header file to main_ledflash c include ledState h Then enter the following before the main function call pit_inputs input global access to the input Next we initialize the inputs between initializing the LEDs and the start of the while loop Also add the local output struct and initialize it by calling the dispatch function with the reset signal set to 1 This reset will set the current state to the initial state and fill the output with their preload values
15. H_ALWAYS and L_anways Since this example only uses the 1 counter delete the H_ENTRY and H_anways States by right clicking on them in the graphical editor and choosing delete from the context menu Adding states The L_ENTRY state corresponds to the state with all the LEDs off To add the four states corresponding to each of the LEDs being exclusively on do the following All information provided in this document is subject to legal disclaimers 2013 2014 NXP Semiconductors All rights reserved Rev 7 4 16 September 2014 84 NXP Semiconductors LPCXpresso v7 User Guide 1 Click on the State button in the Red State editor 2 Click where you would like to place it in the editor see Figure 17 3 3 Rename it by clicking on it once to select it and then clicking on it a second time to edit the name State state 2 amp l l Figure 17 3 Adding a new state Add the four states and name them tepion LED20n LED3on and LED4on As with the naming of inputs and outputs state names have to be distinct Red State ignores any attempt to change the name of a state to that of an existing state Drag the states to arrange them on the canvas as shown in Figure 17 4 LPCXpresso v7 User Guide All information provided in this document is subject to legal disclaimers 2013 2014 NXP Semiconductors All rights reserved User Guide Rev 7 4 16 September 2014 85 NXP Semiconductors LP
16. Instruction Trace or by clicking on the Instruction Trace Config button in the Instruction Trace view Once the target is connected refreshing the view with the refresh button will display the options for the target All information provided in this document is subject to legal disclaimers 2013 2014 NXP Semiconductors All rights reserved Rev 7 4 16 September 2014 76 NXP Semiconductors LPCXpresso v7 User Guide Changes made to the MTB configuration are only applied when the Apply button g is pressed A star appended to a section title indicates that it contains unapplied changes fg Instruction Trace Config X Configure Unapplied changes in view press apply button Enable trace gt Start Stop block One Input Two inputs Start Stop gt Comparator 1 enable Comparator 2 disable Comparator 3 Comparator 4 Counters Trigger condition Simple Two inputs Stall processor resource Watchpoint comparator 2 Stall Stall process when 14 free bytes in the buffer Invert resource Watchpoint comparators Comparator Match Value Mask size Data Write 0x000013f8 0 5 Trigger position in trace Data Value Read 0x000000ff 0 Words before trigger words after trigger 4048 48 Link 1 1 m Link 2 1 gt Link Data size Word X The buffer will mostly contain trace from before the trigger and some after the trigger Disabled or LinkAddress 0x00000000 Settings
17. The Build Artifact is the final product of all the build steps with the exception of any post dump files produced with objdump The Build Artifact is correctly set as the name of a new project by default but may be changed manually This can be useful if for example you have copied an existing project cloned it and you want the new project executable to have the name of your new copy of the project Company responsible for Red Suite and LPCXpresso IDEs Acquired by NXP Semiconductors in April 2013 The development board evaluation board or debug probe connected to a board Debug with Attributed Record Format Developed along with ELF but actually independent of the Object file format DWARF is a format defined for carrying debug information in object files Executable and Linking Format This is the object code file format used by our development toolchain and most microprocessor toolchains GNU Compiler Collection C C compiler and related tools used by LPCXpresso IDE Low end debug probe for NXP microcontrollers provided integrated into the NXP LPCXpresso development boards A software development environment for creating applications for NXP s range of ARM based LPC range of Microcontrollers MCUs Originally a reduced functionality version of Red Suite for specific NXP microcontrollers Open source C99 runtime library Can optionally be used instead of Redlib for C projects and required for C projects A co
18. User Guide Rev 7 4 16 September 2014 14 NXP Semiconductors LPCXpresso v7 User Guide 3 4 Major components of the Develop Perspective D 9 esl Di n Sy QE os re Re eae 7 ole Cle ily toe R Daop E c c 7 Debug WH Registers B D Debug 2 kalb Teo OBIA F a E systick Debug C C NXP Semiconductors MCU Application a y D A 4 GP systickaf MA LPCSI2 kaf 4 g Thread 1 lt main gt Suspended Breakpoint a tal cor systick axf regist main at systicktest c 78 Oxdbe iit 0 it si adb Mt 2 iis itt 000000004 rA GPTOInit its 000000004 73 Set port 7 to output it 6 0x1 2345678 74 GPIOSetDir 7 1 it 7 OxLOQ00FEO 75 iit 6 Oxf FFFFFFF 76 while 1 Loop forever uno OxFFFFFFFF de it 0 OxF FFFFFFF 79 GPIOSetBitValue 7 mr ar MFEFFFFEF se delaySysTick 10 J 5 GPIOSetBitValue 7 1 A systicktest c 2 s U lt a Of E 3 s 46 e RAEI Con fi Pro Me PPro Gs Dat it jit A Hos Oin s Eis FO Expression Type Value _mtb_buffer_ char 1024 010000000 OeeksaehOounse 0 SystemCoreClock uint32_t 12000000 Inst No Disassembly Info function filename Od TimeTick volatile ui 0 475 strel r2 3 AS stc IpBx_g Add new expressio 476 bun Ox814 lt GPIOSetDir Name SystemCoreClock 477 mov sp 7 Details 12000000 478 add sp 20 Default 12000000 479 4 7 pe nannnnn pop Pantentet 7 a Figure 3 3 Develop Perspective whilst debugging
19. documentation for more information about these vendor configurable elements Hard wired event resource This resource will always be observed to be true It can be useful for enabling something constantly when used with an A function or to disable something when used with a NOT A function Embedded Trace Buffer The Embedded Trace Buffer ETB makes it possible to capture the data that is being generated at high speed in real time and to download that data at lower speeds without the need for an expensive debug probe Red Trace Instruction trace on Cortex M3 and Cortex M4 targets is facilitated by the ETB in conjunction with the Embedded Trace Macrocell 65 ETM The ETB and ETM are optional components in the Cortex M3 and Cortex M4 targets Their implementation is vendor specific When they are implemented the vendors may implement different subsets of the ETM s and ETB s features Instruction trace will automatically detect which features are implemented for your target however note that not all of the features listed in this guide may be available on your target The ETM compresses the sequence of executed instruction into packets The ETB is an on chip buffer that stores these packets This tool downloads the stored packets from the ETB and decompresses them back into a stream of instructions This feature is useful for finding out how your target reached a specific state It allows you to visualize the flow of instructions store
20. graphical editor is used to configure the required states and set their names Special states The SCT has several reserved names for states corresponding to special states Choosing include initial state and or include ALWAYS state in the State Machine Wizard automatically adds these special states to the state machine when it is created You can also include them manually by adding a state and giving it the correct reserved name NXP described these states as follows H_ALWAYS L_ALways split counter mode u_anways unified counter mode These are pseudo or virtual states that do not get mapped into a state register value for the SCT state machine It is just a graphical convenience to represent events that are state independent or in other words are considered to be valid in all defined states H_ENTRY L_ENTRY counter split mode u_entry unified counter mode These represent the initial value of the state register the SCT will have after configuration It is a useful feature as you might want the state machine to start from a user defined condition If not specified the SCT will be left in the default configuration after reset that is start from state zero Note that the tool will map the state numbering at its convenience so use the ENTRY feature if the starting state is of relevance for your application Deleting a state Red State editor now contains four boxes representing states with the labels _ENTRY L_ENTRY
21. recommended and 600MB of available disk space running one of the following Mac OS X versions e 10 8 5 or later 10 9 4 or later Additional host platform notes Starting with LPCXpresso v7 1 and following the discontinuation of support by Microsoft Windows XP is no longer an officially supported platform LPCXpresso may continue to work on Windows XP but this can no longer be guaranteed LPCXpresso is no longer tested on Windows XP Starting with LPCXpresso v7 4 Mac OS X 10 7 Lion is no longer an officially supported platform LPCXpresso may continue to work on Mac OS X 10 7 but this can no longer be guaranteed LPCXpresso is no longer tested on Mac OS X 10 7 Both 32 bit and 64 bit Windows Linux systems are supported The LPCXpresso IDE may install and run on other Linux distributions However only the distributions listed above have been tested We have no plans to officially support other distributions at this time A screen resolution of 1024x768 minimum is recommended An internet connection is required to request install and activate license keys When using the product an internet connection is required to update the product and to download new examples Installation When installing all components of the LPCXpresso IDE are installed but some functionality may be restricted by the currently installed license activation Windows The LPCXpresso IDE is installed into a single directory of your choice U
22. Awww lpcware com content forum lpcxpresso latest release Supported debug probes The following debug probes are supported by LPCXpresso IDE for general debug connections e LPC Link LPCXpresso board LPC Link 2 with Redlink firmware either the standalone debug probe or the version built into LPCXpresso V2 boards e CMSIS DAP enabled debug probes such as LPC800 MAX Keil ULINK ME etc e Red Probe Red Probe e RDB1768 development board built in debug connector RDB Link e RDB4078 development board built in debug connector Note that not all Red Trace functionality is supported by all debug probes For more details on Red Trace please see Chapter 8 Support for GDB server based debug connections is provided This feature enables support for 3rd party debug probes such as Segger J Link When debugging with GDB server connections some functionality may be disabled e For more information on using Segger J Link with LPCXpresso visit http www segger com nxp lpcxpresso html LPCXpresso Development Boards original version Since first introduced in 2009 the original LPCXpresso family of boards along with the associated LPCXpresso IDE has re energised the whole MCU evaluation board market Developed in collaboration with Embedded Artists each LPCXpresso board contains a JTAG SWD debug probe called LPC Link and a target MCU LPC Link is equipped with a 10 pin JTAG SWD header and it seamlessly connects the LPC
23. C source files is selected and then select New gt Other from the file menu or press the New button in the toolbar to bring up the Wizard selection dialog Type state in the filter box to find the Red State Machine file generator see Figure 18 2 All information provided in this document is subject to legal disclaimers 2013 2014 NXP Semiconductors All rights reserved Rev 7 4 16 September 2014 94 NXP Semiconductors LPCXpresso v7 User Guide Select a wizard Y Red State Fa Red State Machine file generator Cana am Cone Cin Figure 18 2 Red State Machine Wizard Select Red State Machine file generator and press Next In the New State Machine dialog make sure that the src folder is selected Then enter the file name for the state machine file e g 1edstate and press Next pressing Finish straight away would create the default SCT state machine rather than a software state machine LPCXpresso v7 User Guide All information provided in this document is subject to legal disclaimers 2013 2014 NXP Semiconductors All rights reserved User Guide Rev 7 4 16 September 2014 95 NXP Semiconductors LPCXpresso v7 User Guide ANOO New State Machine Creates a new State Machine file Enter or select the parent folder RDB1768cmsis2_LedFlash src A gt ES CMSISv2p00_LPC17xx Y SRDB1768cmsis2_LedFlash gt Debug src gt stateExample File name ledState Advanced gt gt O N
24. Figure 18 4 The new state is automatically assigned a name state 2 in this case Rename the state by single clicking to select it and then single click it again Note that double clicking will not work two single clicks must be performed in succession Table 18 1 States used by Traffic Light example Description The initial state of the state machine The green light is on and all others are off Only the yellow light on The walk and red lights are on The red light is on only for after the Walk light was been on State Transition Figure 18 4 Adding a new state in the State machine editor Rename state 2 t0 Green and add the remaining four states in the same way naming them as shown in Table 18 1 States can be repositioned by dragging them and can be resized by dragging the handles of a selected state You should now have the states laid out in the state machine editor as in Figure 18 5 LPCXpresso v7 User Guide All information provided in this document is subject to legal disclaimers 2013 2014 NXP Semiconductors All rights reserved User Guide Rev 7 4 16 September 2014 97 NXP Semiconductors LPCXpresso v7 User Guide gt Select State Transition Yellow Figure 18 5 Layout of the states in the State machine editor for the software state machine 18 3 3 Adding inputs The values of inputs can be read by the state machine but cannot be set by the state machine The traffic lights
25. NXP Semiconductors LPCXpresso v7 User Guide 15 2 3 LPCXpresso v7 User Guide User Guide MTB Watermarking The MTB watermarking functionality allows the MTB to respond to the buffer filling to a given level by stopping further trace generation or halting the execution of the target The watermark level and the actions to perform can be setin the Instruction Trace Config view 75 The defined action is performed when the Watermark level matches the MTB s write pointer value The halt action can be augmented with the auto resume behavior MTB Auto resume Red Trace provides the option to automatically download the content of the buffer and resume execution when the target is paused by the watermarking mechanism This auto resume functionality allows extended trace runs to be performed without being constrained by the size of the on chip buffer There is a significant performance cost associated with using auto resume since the time taken to pause the target download the buffer content and resume it again is much greater than the time the MTB takes to fill the buffer The data is not decompressed during the auto resume cycles and so it is still necessary to press Download trace buffer in the instruction trace toolbar to view the captured trace Tip To suspend the target once auto resume is set press the Cancel button in the downloading trace progress dialog box If the downloading trace progress dialog box is not displayed l
26. State Overview 16 1 16 2 16 3 LPCXpresso v7 User Guide User Guide Red State is a graphical tool incorporated into the LPCXpresso IDE for designing state machines and automatically generating the code required to implement the state machine The state diagram is built in the Red State editor by drawing states and the transitions between them You can easily set conditions under which the transitions will occur and associate events with the transitions such as setting of outputs Red State can be used to create and generate code for state machines for NXP s State Configurable Timer SCT peripheral which is available on certain MCUs as well as for software only state machines which can be run on any MCU The Red State related material in this User Guide has three main parts two tutorials and a reference section SCT state machine tutorial 81 provides a walk through for using Red State to implement a state machine on NXP s SCT Software state machine tutorial 93 provides a walk through for creating a software state machine Subsequent sections provide a reference for Red State The NXP State Configurable Timer Red State supports NXP s State Configurable Timer Peripheral SCT that combines a 32 bit Timer Counter with a configurable state machine The SCT integrates its internal state with timer values inputs and outputs to trigger events These events can change the internal state of the SCT or the state of output pi
27. TIMER2_IRQHandler 0x13 Irq2 TIMER1_IRQHandler 0x1 2 Irql TIMERO_IRQHandler 0x11 Overview Interrupt tracing provides information on the interrupt performance of your application This can be used to determine time spent in interrupt handlers and to help optimize their performance Interrupt Statistics view The Interrupt Statistics view displays counts and timing information for interrupt service handlers An example screenshot is shown in Figure 12 1 Count Time in Min time Max time Min time Max time Total tim Timesin First time Current T Overhead Sleep 180 45 4435 76 090ms 457 134ms 19 950us 0 000ns 2 089ms 80 000ms 0 000ns 40 573s 40 960us 0 000ns 89 113 420us 240 000ns 19 170us 457 143ms 0 000ns 40 228s 156 127ms 188 633ms 40 573s 40 960us 0 000ns 59 207 850us 240 000ns 19 200us 1 280s 0 000ns 39 040s 1 253s 280 061ms 40 573s 40 960us 0 000ns 38 58 870us 240 000ns 19 030us 1 067s 0 000ns 39 467s 80 020ms 1 0275 40 573s 40 960us 0 000ns 11 191 990us 1 100us 19 230us 6 400s 0 000ns 38 400s 80 019ms 2 093s 40 573s 40 960us 0 000ns Figure 12 1 Interrupt Statistics View 12 3 LPCXpresso v7 User Guide User Guide Information displayed includes e Count The number of times the interrupt routine has been entered so far e Time In The total time spent in the interrupt routine so far Min time in Minimum time spent in the interrupt routine for a single invocation Max time
28. Workspaces When you first launch LPCXpresso IDE you will be asked to select a Workspace as shown in Figure 3 1 Select a workspace LPCXpresso stores your projects in a folder called a workspace Choose a workspace folder to use for this session Workspace ANLE e Z Use this as the default and do not ask again Figure 3 1 Workspace selection Aworkspace is simply a directory that is used to store the projects you are currently working on Each workspace can contain multiple projects and you can have multiple workspaces on your computer The LPCXpresso IDE can only have a single workspace open at a time although it is possible to run multiple instances in parallel with each instance accessing a different workspace If you tick the Use this as the default and do not ask again option then the LPCXpresso IDE will always start up with the chosen workspace opened Otherwise you will always be prompted to choose a workspace It is also possible to change workspace whilst running the LPCXpresso IDE using the File gt Switch Workspace option 3 3 Perspectives and Views The overall layout of the main LPCXpresso IDE window is known as a Perspective Within each Perspective are many sub windows called Views A View displays a particular set of data in the LPCXpresso environment For example this data might be source code LPCXpresso v7 User Guide All information provided in this document is subject to legal disclaime
29. always on hard wired The ETB is constantly being filled overflowing and looping round overwriting old data The trigger counter is set using the trigger position slider The counter s value is set to the words after trigger value You can think of the position of the slider as being the position of the trigger in the resulting trace that will be captured by the ETB There are three main ways of using the trigger trace after when that the data from the trigger onwards is the interesting information trace about the data either side of the trigger is of interest and trace before data before the trigger is the key information Trace after When the slider is at the far left the words before trigger will be zero and the words after trigger will be equal to the number of words which can be stored in the ETB This corresponds to the situation where the region of interest occurs after the trigger condition Once the ETB receives the trigger packet the trigger counter which was equal to words after trigger will count down with every subsequent word written to the ETB until it reaches zero The trigger packet will be early in the trace and the instruction trace will include all instructions from when the trigger event occurred until the ETB buffer filled up Note that in order to facilitate decoding of the trace the ETM periodically emits synchronization information On some systems the frequency that these are generated can be set O
30. and Configuring the Cortex MO for instruction trace 59 for an example Watermark The watermark section of the MTB advanced configuration view allows you to configure an action to be performed when the buffer fills to a certain level The slider configures the watermark level at which the action is triggered The address next to the slider indicates the absolute address of the watermark Selecting Halt target on match suspends the target when the buffer fills to the specified watermark level When the target is halted the content of the buffer is automatically drained and stored The buffer is reset so that it can be refilled once the target is resumed The trace is not decompressed or displayed in the Instruction Trace view until the Download buffer button is pressed This behavior allows multiple trace runs to be concatenated Selecting Auto resume allows the target to be automatically restarted once the buffer has been downloaded It only has an effect if Halt target on match is also selected This auto resume feature allow the trace capture not to be limited to the size of the MTB s buffer allowing code coverage to measured The frequent interruptions have a large impact on target performance Note You can suspend an auto resuming target by pressing the cancel button in the buffer download progress dialog box If the MTB buffer is sufficiently small then the progress dialog box may not be displayed long enough for the user to selec
31. and will be highlighted by red text in the editor Hovering the mouse cursor over the warnings will provide more information in a pop up box Some problems may only be detected when code is generated These errors will be listed in the message box alerting you to the failure Incorporating with your code The Red State tool generates the code to program the state machine defined in the editor into the SCT registers The function sct_fsm_init must be called to program the SCT This function is declared in the sct_fsm n header file Since the SCT can only be programmed when it is stopped and will need some configuration in your code This configuration can be done using macros included from 1pci8xx_sct h Of 1pc43xx_sct h This part of the configuration is not automatically generated and is implemented in the sct_main c file for this tutorial All information provided in this document is subject to legal disclaimers 2013 2014 NXP Semiconductors All rights reserved Rev 7 4 16 September 2014 92 NXP Semiconductors LPCXpresso v7 User Guide 18 Red State Software state machine tutorial 18 1 Software state machine tutorial overview This section goes through the process of using Red State to create a software state machine and deploying it to a target This example uses the RDB1768 debug board extending a base project provided in the LPCXpresso IDE 18 1 1 Building a traffic light example We are going to make a traffic light s
32. application it does not affect the performance in any way As profile tracing provides a statistical profile of the application more accurate results can be achieved by profiling for as long as possible Profile tracing can be useful for identifying application behavior such as code hotspots 11 2 Profile view The Profile view gives a profile of the code as it is running providing a breakdown of time spent in different functions An example screenshot is shown in Figure 11 1 E Console Tasks Profile 22 6S Data Watch Int Statistics i int Trace amp Host Strings py Problems Executables S a Function Cumula Cumulative samples Current samples Coverage First Last Since Avg Bet Start End Coverag EMAC ReadPacket 644180 B5 oye 122880us 37 4685 20480us 58163us 0x4188 0x4233 11111010 main 482726 26 52 415 81920us 37 468s 0 000ns 77 617us 089b4 Ox3cf3 00000000 timer_expired 324280 M RS 20sz0us 37 4685 81920us 115 541us 0x7d4 Ox7fd 11111011 tapdev_read 237095 m 6 40 960us 37 4685 122 880us 158 027us 0x3d00 0x3d19 11111101 clock_time 140679 n 184 320us 37 4675 204 801us 266 332us 03988 0x399d 11101011 buf_bufto 17 0 we 14 78 287 253ms 1115s 36 353s 48 685ms 08324 Scl 00000010 send_data 2 0 3 2 53 767 838ms 1314s 36 154s 272 979ms 0x34 0x42f data_acked 1 0 1 1 65 487 200ms 487 200ms 36 980s 0 000ns 0x430 Ox4b3 psock_generator_ser 2 0 2 2 90
33. be available for the target MCU from within the Examples area of your LPCXpresso IDE installation The non LPCOpen wizards allow you to create appropriate links to such library projects when creating a new project You will need to ensure that you have imported such libraries from the Examples before selecting them in the wizard Note the use of LPCOpen rather than these peripheral driver projects is recommended in most cases for new projects Code Read Protect NXP s Cortex and ARM7 based MCUs provide a Code Read Protect CRP mechanism to prevent certain types of access to internal flash memory by external tools when a specific memory location in the internal flash contains a specific value The LPCXpresso IDE provides support for setting this memory location For more details see the FAQ at http www lpcware com content faq Ipcxpresso code read protect crp Enable use of floating point hardware Certain MCUs may include a hardware floating point unit for example NXP LPC32xx LPC407x_8x and LPC43xx parts This option will set appropriate build options so that code is built to use the hardware floating point unit and will also cause startup code to enable the unit to be included All information provided in this document is subject to legal disclaimers 2013 2014 NXP Semiconductors All rights reserved Rev 7 4 16 September 2014 30 NXP Semiconductors LPCXpresso v7 User Guide 5 1 7 5 1 10 5 1 11 LPCXpress
34. can optionally select the LPCOpen Board library for the board that your MCU is fitted to using the workspace browser and again in some cases an appropriate value may also be available from the drop down next to the Browse button Although selection of a board library is optional it is recommended that you do this in most cases 5 1 2 CMSIS CORE selection For backwards compatibility reasons the non LPCOpen wizards for many parts provide the ability to link a new project with a CMSIS CORE library project The CMSIS CORE portion of ARM s Cortex Microcontroller Software Interface Standard or CMSIS provides a defined way of accessing MCU peripheral registers as well as code for initializing an MCU and accessing various aspects of functionality of the Cortex CPU itself The LPCXpresso IDE typically provides support for CMSIS through the provision of CMSIS library projects CMSIS CORE library projects can be found in the Examples directory of your LPCXpresso IDE installation LPCXpresso v7 User Guide All information provided in this document is subject to legal disclaimers 2013 2014 NXP Semiconductors All rights reserved User Guide Rev 7 4 16 September 2014 29 NXP Semiconductors LPCXpresso v7 User Guide LPCXpresso v7 User Guide User Guide Generally if you wish to use CMSIS CORE library projects you should use CMSIS_CORE_ lt part family gt which use components from ARM s CMSIS v3 20 specification LPCXpresso IDE doe
35. contains the required code to use the board The LPCXpresso v7 User Guide All information provided in this document is subject to legal disclaimers 2013 2014 NXP Semiconductors All rights reserved User Guide Rev 7 4 16 September 2014 93 NXP Semiconductors LPCXpresso v7 User Guide 18 3 18 3 1 LPCXpresso v7 User Guide User Guide RDB1768cmsis2_RedStateLedTraffic_base project provides the starting point for the tutorial The rdB1768cmsis2_RedStateLedTraffic project contains the working solution that would be generated by following this tutorial Select the three project mentioned above and click Finish to import them into the workspace This tutorial assumes that you are using the RDB1768cmsis2_RedStateLedTraffic_base project Extending the LED Traffic base project Switch to the C C perspective and look at the main_ledflash c file Elements of the file are excluded using the preprocessor command ir Setting the value defined to ADD_REDSTATE_CODE to 1 will enable the state machine code Since we have not generated the code yet it should be left set to o In this case the main while loop contains an infinite loop which increments an integer This section demonstrates how to replace the content of that while loop with the state machine created by Red State Add the state machine to the project The next step is to use the New state machine Wizard to add the state machine Make sure that the src folder containing the
36. entered and exited including nesting Data Watch e Provides the ability to monitor and update any memory location in real time without stopping the processor Host Strings LPCXpresso v7 User Guide All information provided in this document is subject to legal disclaimers 2013 2014 NXP Semiconductors All rights reserved User Guide Rev 7 4 16 September 2014 42 NXP Semiconductors LPCXpresso v7 User Guide e Provide a very low overhead means of displaying diagnostic messages as your code is running All views except for Host Strings are completely non intrusive They do not require any changes to the application nor any special build options they function on completely standard applications Each trace view provides a set of toolbar buttons that are used to control the collection and presentation of trace information Starting data collection within one trace view will result in data collection for other views being suspended The data presentation area of each trace view is enabled only when data collection for the view is active LPCXpresso v7 User Guide All information provided in this document is subject to legal disclaimers 2013 2014 NXP Semiconductors All rights reserved User Guide Rev 7 4 16 September 2014 43 NXP Semiconductors LPCXpresso v7 User Guide 10 Red Trace SWV Configuration 10 1 Starting Red Trace X To use Red Trace s SWV features you must be debugging an application on a Cor
37. on L_anways that uses that signal and calls the function Limit low counter This function instructs the counter that it has reached its limit and should reset to zero This behavior is the default for the counter reaching its limit see NXP s documentation on the SCT for other behaviors The completed blinky state machine should look like Figure 17 11 All information provided in this document is subject to legal disclaimers 2013 2014 NXP Semiconductors All rights reserved Rev 7 4 16 September 2014 90 NXP Semiconductors LPCXpresso v7 User Guide maxcount action 12 CALL Limit low counter L_ALWAYS IDOWN amp amp maxcount action 4 LEDlon CLEAR LED1 IDOWN amp amp maxcount SET LED2 action 2 RESET SET LED1 DOWN amp amp maxcount action 1 action 11 CLEAR LED1 CLEAR LED2 CLEAR LED2 SET LED1 CLEAR LED3 CLEAR LED4 DOWN amp amp maxcount action 3 CLEAR LED1 L_ENTRY DOWN amp amp maxcount action 10 CLEAR LED3 SET LED2 DOWN amp amp maxcount action 8 SET LED4 IDOWN amp amp t DOWN amp amp maxcount ee 5 raaxCOUNt action 9 CLEAR LED4 ST SET LED3 DOWN amp amp maxcount action 7 CLEAR LED4 LED4on LED3on DOWN amp amp maxcount action 6 CLEAR LED3 SET LED4 Figure 17 11 The complete state diagram for the SCT blinky example 17 9 Generating the configuration code The SCT is configured by setting values to registers The code that performs th
38. overhead store instruction added to your code or your OS kernel to cause an appropriate diagnostic string to be displayed within the LPCXpresso IDE Time stamps are captured along with the instrumentation events 14 2 Defining Host Strings Host Strings are defined within a Host Strings file To create a Host Strings file for a project use the New File wizard by right clicking on the project within the Project Explorer view and selecting New gt Host Strings File from the pop up menu The Host Strings file must be located immediately under the project folder and must be named host strings xml Host Strings files are associated with the Host Strings Editor and the new file is opened within this editor automatically when the New File wizard finishes as per Figure 14 1 hoststrings xml 3 Name Figure 14 1 Blank Host Strings Editor Each host string describes a message to be presented within the Host Strings view within the LPCXpresso IDE plus the formatting information for a single parameter that is sent from the target for presentation within the message Click on the Add button within the editor to add a new host string as per Figure 14 2 LPCXpresso v7 User Guide All information provided in this document is subject to legal disclaimers 2013 2014 NXP Semiconductors All rights reserved User Guide Rev 7 4 16 September 2014 55 NXP Semiconductors LPCXpresso v7 User Guide Name DisplayVal Add Host Strin
39. packets These packets are then copied to the embedded trace buffer 67 All information provided in this document is subject to legal disclaimers 2013 2014 NXP Semiconductors All rights reserved Rev 7 4 16 September 2014 65 NXP Semiconductors LPCXpresso v7 User Guide LPCXpresso v7 User Guide User Guide ETB This FIFO buffer can overflow when the rate of packets being written into it exceed the rate at which they can be copied out to the ETB If stalling is supported on the target the ETM can be set to stall the processor when an FIFO overflow is imminent The stall level sets the threshold number of free bytes in the FIFO at which the processor should be stalled The stall does not take effect instantly and so the level should be set such that there is space for further packets to be added to the buffer after the stall level is reached Overflows can still occur even with stalling enabled The maximum value is the total number of bytes in the FIFO buffer Setting the stall level to this will stall the processor whenever anything is entered into the FIFO For example if a stall level of 14 bytes was chosen the processor would be instructed to stall any time there were fewer than 14 bytes left in the in the buffer If the target had a 24 byte FIFO buffer this level would allow a 10 byte safety buffer for packets generated between the stall level being detected and the processor actually stalling Stalling is enabled from t
40. page All information provided in this document is subject to legal disclaimers 2013 2014 NXP Semiconductors All rights reserved Rev 7 4 16 September 2014 28 NXP Semiconductors LPCXpresso v7 User Guide New project Select an LPCOpen Chip library project within the current workspace Select the LPCOpen Chip and optionally Board library project s that you want your new project to link against Selected library project s must be present in this workspace If they are not then click the Import button to run the Import Wizard Import Select LPCOpen Libraries LPCOpen Chip Library Project LPCOpen Board Library Project If a Board Library Project is selected then the corresponding Chip Library Project must also be selected For more information on LPCOpen visit http www lpcware com Ipcopen Figure 5 2 LPCOpen library selection This page allows you to run the Import wizard to download the LPCOpen bundle for your target MCU board from the NXP LPCware website and import it into your workspace if you have not already done so You will then need to select the LPCOpen Chip library for your MCU using the workspace browser and for some MCU s an appropriate value will also be available from the drop down next to the Browse button Note that the wizard will not allow you to continue until you have selected a library project that exists within the workspace Finally you
41. set a sub element like one half of an AND condition for example make sure that the element you want to replace is the selected element Elements that have children other subcomponents will try to use the selected element as a child when it is added For example if an input variable is selected in the bottom part of the Signal view and you apply an AND to it the input signal will be replaced by the AND but one of the children of the AND condition will be the original input variable The SCT has several constraints restricting what can be used as a signal A signal may only consist of one of the following e a single input or output e a single timer match condition e a logical combination of one match condition and one input or output In the SCT you can specify the I O condition for an input or output Once you have added the input or output to the signal right click on it again and choose an option from the I O LPCXpresso v7 User Guide All information provided in this document is subject to legal disclaimers 2013 2014 NXP Semiconductors All rights reserved User Guide Rev 7 4 16 September 2014 116 NXP Semiconductors LPCXpresso v7 User Guide 20 5 20 6 20 6 1 LPCXpresso v7 User Guide User Guide condition menu to set whether the signal will be fired when it is high low on the rising edge or on the falling edge Actions An action consists of a name and a set of action elements associated with it Acti
42. the application Click on OK to continue with the download and debug of the Debug build of your project 4 4 1 Debug Emulator Selection Dialog The first time you debug a project the Debug Emulator Selection Dialog will be displayed showing all supported probes that are attached to your computer In this example a Red Probe and an LPC Link have been found LPCXpresso v7 User Guide All information provided in this document is subject to legal disclaimers 2013 2014 NXP Semiconductors All rights reserved User Guide Rev 7 4 16 September 2014 22 NXP Semiconductors LPCXpresso v7 User Guide Connect to emulator NXP LPC8xx 2 emulators found Select the emulator to use Emulator family Name Serial number Manufacturer Red Probe Family Red Probe A FTURZYNCA Code Red Red Probe LPC Link HID LPC Link Probe v1 3 HID64HS12 NXP LPC Link Emulator search options Search again Remember my selection for this Launch configuration You now need to select the probe that you wish to debug through In Figure 4 7 the LPC Link has been selected which is what we would do for example in order to debug an LPCXpresso812 board Connect to emulator NXP LPC8xx 2 emulators found Select the emulator to use Emulator family Name Serial number Manufacturer Red Probe Family Red Probe A FTURZYNCA Code Red Red Probe LPC Link HID LPC Link Probe v1 3 HID64HS12 NXP LPC Li
43. the trace type which may be edited while trace is disabled e Value just the trace the value transferred to from memory PC only just trace the PC of the instruction making the memory access e PC and value trace the value and the PC Address trace the address of memory accessed e Address and value trace the address and value e Access shows the access type which may be edited while trace is disabled e Write just trace writes to the memory location e Read just trace reads to the memory location e Read amp Write trace both reads and writes The variables in the item display persist between debug sessions They are saved when the session ends and automatically re added when the trace is started If a variable is removed from the code between debug sessions the user is alerted that the variable cannot be restored LPCXpresso v7 User Guide All information provided in this document is subject to legal disclaimers 2013 2014 NXP Semiconductors All rights reserved User Guide Rev 7 4 16 September 2014 53 NXP Semiconductors LPCXpresso v7 User Guide 13 2 2 Trace Display The trace display shows the traced values of the memory locations Each location being traced is given a particular color code to allow all access to it to be easily picked out See Figure 13 4 orik a OE ra Time 343 869s 343 869s 343 869s 343 869s 343 229s 343 229 343 229s Item Value timer2counter 0x0000022e timer0_counte
44. this version You will need to go through the activation process again in order to use this version If you have previously been using LPCXpresso IDE v6 x then your existing activation code is compatible with LPCXpresso IDE v7 x There is no need to reactivate Users of Code Red Technologies Red Suite products Red Suite activation codes are not compatible with LPCXpresso IDE You will need to obtain an LPCXpresso Free or Pro Edition activation code in order to use LPCXpresso IDE Unregistered UNREGISTERED license Initially after installation LPCXpresso IDE will run with a default Unregistered UNREGISTERED license Most features of the product may be used although some functionality is restricted including the size of applications that you can build and debug limited to 8Kbytes and Red Trace functionality is disabled Activate your product with a Free Edition or Pro Edition license to remove these restrictions Activating your product LPCXpresso Free Edition A Free Edition activation code may be obtained free of charge by registering the LPCXpresso IDE This provides a license to use the complete development environment with a 256KB debug download size limit Note You will need to have created an account and logged on to the LPCWare website to be able to obtain a Free Edition activation code To activate your installation with a Free Edition license from within LPCXpresso IDE 1 Go to the menu entry Help gt Activate g
45. to t_ENTRy select the Transition tool then 1 Click on the starting state for the transitions 1_anways 2 Move the pointer to the end state for the transition L_ENTRY 3 Click on the end state for the transition 4 Red State creates the new transition The label of the new transition is highlighted in red because it does not have a signal associated with it See Figure 17 6 17 8 2 Adding a signal to a transition Create a signal to link the reser input with the new transition by pressing the add button in the Signals panel Next double click on the new signal and rename it Reset Finally right click On Reset and then select Input and then RESET from the pop up menu see Figure 17 7 LPCXpresso v7 User Guide All information provided in this document is subject to legal disclaimers 2013 2014 NXP Semiconductors All rights reserved User Guide Rev 7 4 16 September 2014 87 NXP Semiconductors LPCXpresso v7 User Guide ar Add Signal Input pin 0 Input pin 1 Input pin 2 Input pin 3 Remove signal Input pin 4 aI Rename DOWN Add AND muon RESET RESET 3 Add OR Input pin 7 maxcount Figure 17 7 Adding a reset signal 17 8 3 LPCXpresso v7 User Guide User Guide The bottom half of the Signals panel now shows the composition of the signal selected in the top half Notice the 1 icon next to the input name in the bottom half This icon indicates that the signal will fire when the reset input
46. will by default display the memory regions that have been defined by the LPCXpresso IDE itself All information provided in this document is subject to legal disclaimers 2013 2014 NXP Semiconductors All rights reserved Rev 7 4 16 September 2014 33 NXP Semiconductors LPCXpresso v7 User Guide CE ee O Se type filter text MCU settings gt Resource Builders react 4 C C Build NXP LPC1850 Bead Variables LPC1820 Discovery Options LPC1822 Emasman LPC1823 Logging LPC1825 MCU settings LPC1827 Settings ni LPC1830 Tool Chain Editor LPC1833 b C C General LPC1837 Project References LPC1850 Run Debug Settings LPC1853 LPC1857 LPC2000 gt LPC2900 inean Target architecture cortex m3 Memory details LPC1850 Flash driver Name i Location RamLoc96 040000000 RamLoc40 040080000 RamAHB32 0x20000000 RamAHB16 0x20008000 RamAHB_ETB16 0x2000c000 Figure 6 1 LPC1850 default memory regions 6 2 1 Editing a memory configuration Selecting the Edit button will launch the Memory configuration editor dialog see Figure 6 2 LPCXpresso v7 User Guide All information provided in this document is subject to legal disclaimers 2013 2014 NXP Semiconductors All rights reserved User Guide Rev 7 4 16 September 2014 34 NXP Semiconductors LPCXpresso v7 User Guide z Memory configuration editor PRESSO Edit configuration for LPC1
47. will have two inputs the button for the pedestrians to press to change the lights and a reset signal Add these two inputs in the Inputs for State Machine panel by pressing the add button twice Delete accidentally added inputs by selecting their row and pressing the Delete button x Source Figure 18 6 Adding inputs for the Software State Machine Edit the names of the inputs by clicking in the Name column naming one buttonPushea and the other reset The source column defines the type of these inputs keep their source as int LPCXpresso v7 User Guide All information provided in this document is subject to legal disclaimers 2013 2014 NXP Semiconductors All rights reserved User Guide Rev 7 4 16 September 2014 98 NXP Semiconductors LPCXpresso v7 User Guide Name Type Source buttonPushed variable int reset Variable int Figure 18 7 Added inputs for the Software State Machine 18 3 4 Adding outputs The Outputs for State Machine panel includes variables that can be read and set by the state machine as well as functions that may be called by the state machine This example uses functions to turn the LEDs on and off as well as variables for timing the different stages of the lights Use the Add button in the Outputs for State Machine panel to add 10 outputs Name two of the variables timer and duration to be used for the timing of the lights Click on their name to rename them in the table keeping
48. will overwrite any data entered into it The enablement and size of the __mtb_buffer__ is controlled by three symbols e __mTB_DISABLE If this symbol is defined then the buffer array for the MTB will not be created e __MTB_BUFFER_S1ZE Symbol specifying the size of the buffer array for the MTB This must be a power of 2 in size and fit into the available RAM The MTB buffer will also be aligned to its size boundary and be placed at the start of a RAM bank which should ensure minimal or zero padding due to alignment e __mTB_RAM BANK Allows MTB Buffer to be placed into specific RAM bank When this is not defined the default first if there are several RAM bank is used To change or add these symbols click on Quickstart Panel gt Quick Settings gt Defined Symbols All information provided in this document is subject to legal disclaimers 2013 2014 NXP Semiconductors All rights reserved Rev 7 4 16 September 2014 59 NXP Semiconductors LPCXpresso v7 User Guide 15 1 2 LPCXpresso v7 User Guide User Guide If you have a project for an MTB supported part which does not have the mtb c file in it already you simply need to copy the mt c file from existing project or create a new project and copy the file from there Warning Enabling the MTB manually without properly configuring the targets memory usage will result in unpredictable behavior The MTB can overwrite user code or data which is like
49. 0x10000000 e Change buffer size e Remove buffer from project Note The changes above only take effect after the project is rebuilt v Watermark I 0x10000000 Halt target on match Auto resume Stop trace collection on match Figure 15 2 Instruction Trace config view for MTB instruction trace Configuring the buffer If the target does not have a buffer allocated for the MTB the view will display instruction on how to create the buffer when it is refreshed Enabling The three check boxes in the top section of the view control whether the MTB is enabled or not The first check box Enable MTB can be used to directly enable or disable the MTB The second two check boxes control whether or not the MTB is affected by start and stop signals tstart and tstop which can be triggered by software using the target s external trace buffer command register EXTTRACECMD Buffer The buffer section of the MTB configuration view displays information about where in memory the MTB data is stored It displays the size of the buffer and provides instructions on how to change or remove the buffer LPCXpresso v7 User Guide All information provided in this document is subject to legal disclaimers 2013 2014 NXP Semiconductors All rights reserved User Guide Rev 7 4 16 September 2014 75 NXP Semiconductors LPCXpresso v7 User Guide 15 3 4 LPCXpresso v7 User Guide User Guide See MTB memory configuration 64 for more information
50. 15 2 15 2 1 15 2 2 LPCXpresso v7 User Guide User Guide Select Data Value Write from the drop down note that data comparators are not implemented in all watch point comparators Enter the value we want to match oxf in the text box Next we link the data comparator to the comparator we configured in step 5 by selecting 1 in both the link 0 and link 1 fields Select the Data size to word The event resource Comparator 2 will now be true when Comparator 1 is true and the word 0x000000f is written Step 7 Configure the trigger condition In the trigger condition section select the One Input tab Set the resource to be Watchpoint Comparator 2 and ensure that the Invert resource option is not checked These setting ensure that a trigger is asserted when the Watchpoint Comparator 2 is true i e when oxf is written to our focal variable Step 8 Prevent trace from being recorded after the trigger Slide the Trigger position slider over to the right so that only 56 words are written to the buffer after the trigger fires This setting will provide some context for the trigger and allows up to 4040 words of trace to be stored from before the trigger which will help us see how the target ended up writing ox to our variable The configured view should look like Figure 15 3 Step 9 Configure and resume the target Now press the green check button g to apply the configuration to the ETM and ETB Resume the target after the configu
51. 4 16 September 2014 31 NXP Semiconductors LPCXpresso v7 User Guide You should then be able to build and debug your project as described in Section 4 3 and Section 4 4 LPCXpresso v7 User Guide All information provided in this document is subject to legal disclaimers 2013 2014 NXP Semiconductors All rights reserved User Guide Rev 7 4 16 September 2014 32 NXP Semiconductors LPCXpresso v7 User Guide 6 Memory Editor and User Loadable Flash Driver mechanism LPCXpresso v7 User Guide User Guide 6 1 6 2 Introduction By default the LPCXpresso IDE provides a standard memory layout for known MCUs This works well for parts with internal flash and no external memory capability as it allows linker scripts to be automatically generated for use when building projects and gives built in support for programming flash as well as other debug capabilities In addition the LPCXpresso IDE supports the editing of the target memory layout used for a project This allows for the details of external flash to be defined or for the layout of internal RAM to be reconfigured In addition it allows a flash driver to be allocated for use with parts with no internal flash but where an external flash part is connected Memory Editor The Memory Editor is accessed via the MCU settings dialog which can be found at Project Properties gt C C Build gt MCU settings This lists the memory details for the selected MCU and
52. 850 X 1 Flash driver selection Flash driver v Memory configuration Type Name Location RAM RamLoc96 0x10000000 RAM RamLoc40 0x10080000 0xa000 RAM RamAHB32 0x20000000 0x8000 RAM RamAHB16 0x20008000 0x4000 RAM RamAHB_ETB16 0x2000c000 0x4000 Add Flash Add RAM Split Delete Figure 6 2 Memory configuration editor Known blocks of memory with their type base location and size are displayed Entries can be created deleted etc by using the provided buttons see Figure 6 2 Table 6 1 Memory editor controls Details Add a new memory block of the appropriate type Add a new memory block of the appropriate type Split the selected memory block into two equal halves Delete the selected memory block Export a memory configuration for use in another project Import a memory configuration that has been exported from another project Reorder memory blocks This is important if there is no flash block then code will be placed in the first RAM block and data will be placed in the block following the one used for the code regardless of whether the code block was RAM or Flash Browse Flash driver Select the appropriate driver for programming the flash memory specified in the memory configuration This is only required when the flash memory is external to the MCU Flash drivers for external flash must have a cfx file extension and must be located in the bin flash subdirectory of th
53. CXpresso IDE and specific associated debug probes that provides access to trace information from your target system Two forms of trace functionality are supported by LPCXpresso IDE e Serial Wire Viewer SWV Instruction Trace 8 1 Serial Wire Viewer The Serial Wire Viewer SWV tools provide access to the memory of a running target and facilitate trace without needing to interrupt the target Support for SWV is provided by all Cortex M3 and M4 based MCUs It also requires only one extra pin on top of the standard Serial Wire Debug SWD connection Note iy Use of Red Trace s SWV support requires connection to the target system using a compatible debug probe currently Red Probe only Cortex MO and Cortex M0 parts do not have SWV capabilities 8 2 Instruction Trace Instruction trace provides the ability to record a trace of executed instructions on certain Cortex M0 M3 and M4 based MCUs To support the use of the Instruction Trace functionality the target MCU must meet the following requirements Cortex M3 and M4 based parts must implement both ARM s Embedded Trace Macrocell ETM and an Embedded Trace Buffer ETB This means for example that Instruction Trace can be carried out with NXP s LPC18xx and LPC43xx parts but not with LPC17xx parts which do not implement an ETB e Cortex M0 must implement ARM s Micro Trace Buffer MTB This means for example that Instruction Trace can be carried out with LPC8
54. CXpresso v7 User Guide Select State Transition L_ALWAYS LEDlon LED2on LLENTRY LED3on LED4on Figure 17 4 The states for the blinky example The red text of the state labels indicates that there is a problem with that state Hovering the cursor above a state will display any errors associated with that state For example see Figure 17 5 where Red State is warning that the state machine can never enter this state This problem will be addressed in the following sections LED1on LED2on There is a problem with this state o Unreachable state not associated with an entry point Figure 17 5 Error indication 17 8 Adding transitions 17 8 1 Creating a new transition Whenever the reset input is high the state machine should enter the t_enrry state regardless of the state machine s current state Adding a transition from the t_zntry state is a convenience that avoids the necessity of drawing transitions from every other state when such a global transition is required LPCXpresso v7 User Guide All information provided in this document is subject to legal disclaimers 2013 2014 NXP Semiconductors All rights reserved User Guide Rev 7 4 16 September 2014 86 NXP Semiconductors LPCXpresso v7 User Guide L_ALWAYS L_ALWAYS L_ALWAYS L_ALWAYS no signal ino action 2 L ENTRY L_ ENTRY 3 Lent RY L_ ENTRY Figure 17 6 Adding a transition between states To add a transition from 1_anways
55. DOWN amp amp maxcoun Input pin 6 bool gi CTIN_6 action 1 action 11 Input pin 7 bool CTIN_7 maxcount Match Low speed maxcount gt A main c CLEAR LED1 CLEAR LED2 gt sct_fsm c CLEAR LED2 gt sct_fsm h CLEAR LED3 DOWN amp amp maxcount speed constint 1000 gt sct_main c CLEAR LED4 action 3 gt sct_user h CLEAR LED1 DOWN amp amp maxcount blinky rsm action 10 D blinky smd CLEAR LED3 gt amp Debug 1 SET LED2 LPC18_Hitex_SCT_Blinky Debug Outputs for State Machine 5 Xe B LPC18_Hitex_SCT_Blinky Release DOWN amp amp maxcount Name Type Source preload B readme txt action 8 LED1 bool FALSE gt GSLPC18_Hitex_SCT_Motor STIEN a EE DOWN amp amp maxcount IDOWN amp amp maxcount LED2 bool FALSE gt tS LPC18 Hitex SCT_Priorities action 9 actions LED3 bool FALSE gt E LPC18_Hitex_SCT_Pulse CLEAR LED4 CLEAR LED2 LED4 bool FALSE gt GSRDB1768cmsis2_LCDdemo SET LED3 SET LED3 Output pin 4 bool gt ESRDB1768cmsis2_LCDlib DOWN amp amp maxcount Output pin 5 bool gt SRDB1768cmsis2_timers action 7 Output pi T put pin 6 bool amp xgng CLEAR LED4 Output pin 7 bool Output pin 8 bool Output pin 9 bool 1DOWN amp amp maxcount Output pin 10 bool CTOUT_10 action 6 Output pin 11 bool CTOUT_11 TET s a Outline amp E Properties CLEAR LED3 Output pin 12 bool CTOUT_12 An outline is not available SET LED4 Output pin 13 bool CTOUT_13 Output pin 14 bool _ CTOUT_14 O St
56. Make sure that you have connected the one at the LPC Link end to your computer Figure 4 4 USB 2 0 A Mini B cable When debug is started the program is automatically downloaded to the target and is programmed into FLASH memory a default breakpoint is set on the first instruction in main the application is started by simulating a processor reset and code is executed until the default breakpoint is hit LPCXpresso v7 User Guide All information provided in this document is subject to legal disclaimers 2013 2014 NXP Semiconductors All rights reserved User Guide Rev 7 4 16 September 2014 21 NXP Semiconductors LPCXpresso v7 User Guide Yi Start here Import project s ej New project Build all projects Debug amp Build nxp_lpcxpresso_812_periph_acmp Debug of Clean nxp_lpexpresso_812_periph_acmp Debug s Debug nxp_lpcxpresso_812_periph_acmp Debug Edit nxp_lpcxpresso_812_periph_acmp project settle 235 Import project s from XML Description 83 Quick Settings v Export projects to archive zip Export projects and references to archive zip Figure 4 5 Launch debug session To start debugging nxp_ipcxpresso_812_periph_acmp on your target simply highlight the project in the Project Explorer and then in the Quickstart Panel click on Start Here and select Debug nxp_Ipcxpresso_812_periph_acmp as in Figure 4 5 The LPCxpresso IDE will first build and then start debugging
57. September 2014 78 NXP Semiconductors LPCXpresso v7 User Guide 15 4 2 15 4 3 LPCXpresso v7 User Guide User Guide You can also double check that your target is in Supported Targets 78 MTB Target crashes when MTB is enabled The MTB may be overwriting code or data on the target Check that the MTB s memory configuration is compatible with the target s memory configuration Target keeps resuming itself and cannot stop it Try to press the Stop auto resume button a in the instruction trace view toolbar This button disables auto resume so that the target will remain halted the next time the MTB suspends it See Auto resume 65 in the Concepts section for more information ETB Trigger Packet missing from trace even though trigger occurred It may be that the trigger packet was lost due to FIFO overflow and was not written to the ETB To make sure that it actually was triggered look at the trigger counter the number of words to write after the trigger condition The trigger counter only decrements after the trigger has been activated If it has not decremented check your trigger condition If the trigger counter has decremented and you see no packet try enabling stalling if it is implemented All information provided in this document is subject to legal disclaimers 2013 2014 NXP Semiconductors All rights reserved Rev 7 4 16 September 2014 79 NXP Semiconductors LPCXpresso v7 User Guide 16 Red
58. The state machine cannot directly affect inputs Each input has a name a type and a source The name can be any string but no two inputs can have the same name in the same state machine Internally any non alpha numeric characters are treated as underscores so the names input 1 input 1 and input_1 would be considered identical Different state machines may allow different types The source describes where an input is coming from Note that you may not be able to edit some properties of an input Fixed properties are written in blue text The Outputs for State Machine view see number 3 in Figure 20 1 defines the outputs available to the state machine In contrast to the inputs the state machine may LPCXpresso v7 User Guide All information provided in this document is subject to legal disclaimers 2013 2014 NXP Semiconductors All rights reserved User Guide Rev 7 4 16 September 2014 112 NXP Semiconductors LPCXpresso v7 User Guide 20 2 20 2 1 20 2 2 LPCXpresso v7 User Guide User Guide directly affect outputs for example by setting pins or calling functions The Output view is very similar to the Input view but includes an additional column This fourth column is the preload column where you may optionally enter initial values of the outputs Note that outputs also include functions that can be called Like the input view blue text indicates non editable fields The Signals view see number 4 in Figur
59. This is the last time relative to the start time of tracing that the function was sampled e Since It is this long since you last saw this function current last LPCXpresso v7 User Guide All information provided in this document is subject to legal disclaimers 2013 2014 NXP Semiconductors All rights reserved User Guide Rev 7 4 16 September 2014 46 NXP Semiconductors LPCXpresso v7 User Guide e Avg Between This is the average time between executions of this function Note Coverage is calculated statistically sampling the PC at the specified rate e g 50Khz It is possible for instructions to be executed but not observed The longer trace runs for the more likely a repeatedly executed instruction is to be observed As the length of the trace increases the observed coverage will tend towards the true coverage of your code However this should not be confused with full code coverage LPCXpresso v7 User Guide All information provided in this document is subject to legal disclaimers 2013 2014 NXP Semiconductors All rights reserved User Guide Rev 7 4 16 September 2014 47 NXP Semiconductors LPCXpresso v7 User Guide 12 Red Trace Interrupt tracing 12 1 12 2 E Console 3 Tasks Profile f Data Watch I Int Statistics 2 W Int Trace amp Host Strings RR Problems Executables Start Trace a a Ss E Int handler Main ResetISR 0x0 Irq4 TIMER3_IRQHandler 0x14 Irq3
60. User Guide All information provided in this document is subject to legal disclaimers 2013 2014 NXP Semiconductors All rights reserved User Guide Rev 7 4 16 September 2014 52 NXP Semiconductors LPCXpresso v7 User Guide 13 2 1 Item Display E Console Tasks Profile 3 Int Statistics Fr int Trace Hi Enable Trace Value Format Type Access wv timerl_counter d v timer2_counter 0x 08x timer0_toggle 0x00000000 0x 08x Value Write timer1_toggle 0x00000000 0x 08x gt Value Read _ timer2_toggle 0x00000000 O0x 08x PC only Read timer3_toggle 0x00000000 O0x 08x Value Read amp Write M times 3 running 0x 08X Value Write SystemCoreClock 0x05f5e100 0x 08x PC and value Read Figure 13 3 Data Watch Item Display As shown in Figure 13 3 the item display lists the data watch items that have been added The following information is presented Enable Trace tracing of this item may be enabled or disabled using the checkbox A maximum of 4 items may be traced at one time Each traced item is given a color code so that it may be picked out easily on the trace display see Figure 13 4 e Value shows the current value of the item and may be edited to write a new value to the target If the current value has changed since the last update then it will be shown highlighted in yellow e Format shows the printf style expression used to format the value and may be edited Type shows
61. Xpresso IDE to the target MCU via USB the USB interface and other debug features are provided by NXP s ARM9 based LPC3154 MCU The target includes a small prototyping area and easily accessible connections for expansion An LED is also fitted as standard with some board variants having additional fittings such as an RGB LED potentiometer or USB device connector All information provided in this document is subject to legal disclaimers 2013 2014 NXP Semiconductors All rights reserved Rev 7 4 16 September 2014 3 NXP Semiconductors LPCXpresso v7 User Guide An LPCXpresso board with its on board target MCU can be used either on its own for software development and benchmarking or connected to an off the shelf baseboard such as those available from Embedded Artists for rapid proof of concepts ee ee a ee cctece LPC Link Figure 1 1 LPCXpresso development board Cutting the tracks between the LPC Link and the target will change the LPC Link into a standalone JTAG SWD debug probe This enables the LPCXpresso platform to be connected to an external target which may be an off the shelf commercial development board or a target board of your own design For more information visit http www pcware com LPCXpressoBoards 1 3 LPC Link 2 Debug Probe The LPC Link 2 is a new generation of debug probe It is powered by an NXP LPC4300 series MCU and includes a standard 10 pin JTAG SWD connector a 20 pin JTAG SWD ETM con
62. _IRQHandler 0 A gt Irg3 TIMER2_IRQHandler 0 A gt Irq2 TIMER1_IRQHandler 0 lt I gt Irqi TIMERO_IRQHandler 0 Mm lt gt Main ResetISR Tin Figure 12 2 Interrupt Trace View Each interrupt handler interrupt service routine is listed in the left hand panel and horizontally is the time axis In the waveform entry into an interrupt routine is indicated with a red vertical line and exit from an interrupt routine is indicated by a green vertical line The buttons in the top right corner deserve further explanation and are enlarged in Figure 12 3 TITTITIOll iti tii i er 0443s 26 111105 26 12 UuUUU UU Figure 12 3 Interrupt trace display controls Clicking on the clock icon puts the display into a linear time mode e The next button puts the display into an event view In this view time is no longer linear on the x axis but this can be very useful for showing sparse events that are spread out in time at seemingly unrelated intervals e The LOG button puts the display into a log time view which has the effect of compressing time to show more information with less loss of detail e and are used to zoom the display in the time axis e The left and right buttons are used to scroll the time display e The refresh button literally shows a capture of another set of samples in the view The panel on the left of the In
63. a signal to a transition Add the always signal to the transition from state 1 to Green by right clicking on the transition label the text beside the arrow that says no signal and selecting Set Signal gt always from the context menu sate _s 8 ino signal lin Set Signal RESET no test set Add action always timer timer Generate Code Generate Action template Figure 18 12 Adding a signal to a transition 18 3 9 Adding actions to a transition A single action is associated with a transition That action can be composed of multiple action elements allowing multiple outputs to be set and functions called when the transition s signal is fired and the state machine is in the transition initial state When the state machine transitions from state 1 to Green the green light should turn on and the other lights should all be off To implement this behavior right click on the no action text beside the arrow and select Add Action gt CALL gt GreenOn Then repeat this procedure to call the functions that turn off the other lights Remove accidentally added action elements by right clicking on the transition label and choosing the item from the delete action element list Note that the Delete option in the context menu will delete the entire transition The first transition should now be labeled with the text timer timer actioni CALL GreenOn CALL YellowOff CALL RedOff CALL Walkoff
64. a transition cece eeeeeeaneeeeeeaaeeeeeeaaeeeees 102 18 3 10 Transition ON button press sssri cece eee cece eee ee kaaa 102 18 4 Integrating a state machine with existing code eececeeeeeeenneeeeeeaneeees 104 18 41 EQN Mainessa akae aa e 105 18 4 2 Generating the state machine code cceceeeeeeeeeeeeeeeeeaeeeeeees 105 18 4 3 Editing the actions C file eeeeeeeeeseeseeeenerrsneeesssrrrrrrrresrersrnnns 106 18 4 4 Accessing the outputs ssssssssisssssirssssrrrrssrrirssrrrrnsrrrrssnrrensnnnt 107 18 4 5 Setting inputs in interrupt handlers cecceeeeeeeeeeeeeeeeeaeeeeeeees 107 18 4 6 Running on the target ccceeeeeeeeeeeeeeeaaeeeeeeaaeeeeeeaaeeeeeeaaeeees 108 18 4 7 Other examples risarnir einna ata a a a 108 19 Red State New state machine Wizard eseeesssessessessserrrrrrssssrrrrrrrnssssrerrnne 109 19 1 SCT Wizard OPtlONS orsi isora aalan aaka aa 109 19 2 Software State Machine Wizard options ssssssssesssssrrirrrsrssssrrrrresresns 110 20 Red State The state machine editor 0 ee cece ce eeee cece eee eeeeeeeeeeeeeeaeaaeeneeeeeeees 112 20 T QVENVIOW cnie alien akin bale Sacer stat abelidapanes E tune tet tayadeayecbracesaeae 112 LPCXpresso v7 User Guide All information provided in this document is subject to legal disclaimers 2013 2014 NXP Semiconductors All rights reserved User Guide Rev 7 4 16 September 2014 iv NXP Semiconductor
65. able name into the location search box and hit enter 3 Copy the address of the variable to clipboard Note We are assuming that the variable is a global variable Step 3 Enable trace In this step we configure trace to be generated unconditionally in the Instruction Trace config view 1 In the Trace enable section a Select the Simple tab b Select enable Step 4 Enable stalling To make sure that no packets get lost if the ETM becomes overwhelmed we enable stalling Setting the stall level to 14 bytes mean that the processor will stall when there are only 14 bytes left in the formatting buffer This setting ensures that we do not miss any data however it comes at the cost of pausing the CPU when the ETM cannot keep up with it See stalling 65 in the Concepts section for more information 1 Check the Stall processor check box 2 Drag the slider to set the Stall level to 14 bytes Step 5 Configure watchpoint comparator In the first watchpoint comparator choose data write in the comparator drop down box and then enter the address of the variable that you obtained earlier This event resource will be true whenever there is a write to that address regardless of the value written Step 6 Configure the value written All information provided in this document is subject to legal disclaimers 2013 2014 NXP Semiconductors All rights reserved Rev 7 4 16 September 2014 62 NXP Semiconductors LPCXpresso v7 User Guide
66. ace views allow you to gather and display runtime information using the SWV technology that is part of Cortex M3 M4 based parts In addition for some MCUs you can also view instruction trace data downloaded from the MCU s Embedded Trace Buffer ETB or Micro Trace Buffer MTB The example here shows instruction trace information downloaded from an LPC812 s MTB For more information on Red Trace functionality please see Chapter 8 4 Quick Start Variables Breakpoints Expressions Views e On the lower left of the window the Quickstart Panel has fast links to commonly used features This is the best place to go to find options such as Build Debug and Import e Sitting in parallel to the Quickstart view the Variable view allows you to see the values of local variables e Sitting in parallel to the Quickstart view the Breakpoint view allows you to see and modify currently set breakpoints e Sitting in parallel to the Quickstart view the Expressions view allows you to add global variables and other expressions so that you can see and modify their values 5 Debug View e The Debug view appears when you are debugging your application This shows you the stack trace In the stopped state you can click on any particular function and inspect its local variables in the Variables tab which is located parallel to the Quickstart Panel LPCXpresso v7 User Guide All information provided in this document is s
67. ade in LPCXpresso IDE v7 compared to the previous release v6 e New release of the GNU compilers v4 8 3 e Includes new general optimization level Og This new optimization level aims at providing fast compilation a superior debugging experience and reasonable runtime performance e Adds Link Time Optimization LTO which is sometimes known as Whole Program Optimization This allows all the different compilation units that make up a single executable to be optimized as a single module LPCXpresso v7 User Guide All information provided in this document is subject to legal disclaimers 2013 2014 NXP Semiconductors All rights reserved User Guide Rev 7 4 16 September 2014 2 NXP Semiconductors LPCXpresso v7 User Guide LPCXpresso v7 User Guide User Guide 1 2 e Inclusion of a new small footprint variant of the Newlib C and C library known as NewlibNano Use of this library can result in significantly smaller code size especially of C applications Note that further details on the use of these new options can be found in the compiler documentation that is provided in the IDE help system e Note that LPCXpresso IDE v7 3 0 upgrades the GNU Compilers to v4 8 4 e New release of the base Eclipse IDE Luna v4 4 and CDT 8 4 e The Managed Linker script mechanism has been extended to support the features of new GNU compiler For the latest details on new features and functionality visit http
68. at activation code over multiple single seat codes is that this enables a single activation code to be made available to users whilst offering the ability to monitor and administer usage centrally This functionality is provided by a feature called the License Control Panel LCP Single seat licenses can be upgraded to multi seat licenses by purchasing additional seats For additional information please visit http www pcware com content faq lpcxpresso central administration activation codes Further information on installation and licensing Further information on LPCXpresso IDE installation licensing and activation codes can be found in our FAQs at http www pcware com faq activation licensing All information provided in this document is subject to legal disclaimers 2013 2014 NXP Semiconductors All rights reserved Rev 7 4 16 September 2014 12 NXP Semiconductors LPCXpresso v7 User Guide 3 LPCXpresso IDE Overview 3 1 Documentation and Help The LPCXpresso IDE is based on the Eclipse IDE framework and many of the core features are described well in generic Eclipse documentation and in the help files to be found on the LPCXpresso IDE s Help gt Help Contents menu This also provides access to the LPCXpresso User Guide this document as well as the documentation for the compiler linker and other underlying tools To obtain assistance on using LPCXpresso visit http Ipcware com lpcexpresso support 3 2
69. ate Table 83 0 State Machine Settings El Console gt 0 5 Action List 28 X a D Signals 5 Current State Next State Signal Action action 1 Reset LLALWAYS L_ENTRY Reset action 1 action 2 increment LLALWAYS L_ALWAYS maxcount action 12 i action 3 decrement L_ENTRY LEDlon increment action 2 action 4 maxcount LLENTRY LED4on decrement action 8 action 5 9 f LED1on LLENTRY decrement action 3 action 6 LED1on LED2on increment action 4 Operation Output YB And DOWN amp amp maxcount LED2on LED3on increment action 5 CLEAR LED1 T DOWN DOWN LED2on LED1on decrement action 11 T maxcount maxcount Generate Code ne LPC18 Hitex SCT Blinky NN _______ Figure 20 1 The Red State perspective The main window is the state machine diagram editor see number 1 in Figure 20 1 The editor is associated with rsm files This is where the state machine is graphically represented Boxes represent states Arrows show transitions between states You can add states and transitions by selecting them from the pallet on the left The transitions have signals and actions associated with them Any red text in the state machine diagram indicates a problem with the set up You can hover your cursor over the text for the full error description Use the drop down in the toolbar to set the zoom level of the diagram The Inputs for State Machine view see number 2 in Figure 20 1 defines the state machine s inputs
70. be running your code Once the trace buffer is filled up older trace data is overwritten by the newer trace data Configuring the trace buffer as a circular buffer ensures that the most recently executed code is always stored in the buffer If the Record Trace Continuously button was grayed out or you encountered error when trying to set check out the troubleshooting guide 78 Step 3 Download the content of the buffer 1 Suspend the execution of your target by selecting Run gt Suspend 2 Press Download trace amp in the Instruction Trace view All information provided in this document is subject to legal disclaimers 2013 2014 NXP Semiconductors All rights reserved Rev 7 4 16 September 2014 60 NXP Semiconductors LPCXpresso v7 User Guide 15 1 3 LPCXpresso v7 User Guide User Guide There may be a short delay as the trace is downloaded from target and decompressed Once the trace has been decompressed it is displayed as a list of executed instructions in the Instruction Trace view Step 4 Review the captured trace In this step we will explore the captured trace by stepping through it in the instruction view and linking the currently selected instruction to the source code which generated it as well as seeing it in context in the disassembly view i Toggle the Link to source button B so that it is selected 3 Select a row in the Instruction Trace view 4 Use the up and down cursor keys to scroll t
71. ce tat feasices sahededds T A TS 40 8 Red Trace Overview sssciccisavenseaaasivotdaiaiiiedaasanotas ves veeaavurods KERR AEEE KRAN KORAKE N ERRES RRA KREK S 41 8 1 Serial Wire Viewer ssicievestantecessneve saa rauicnesanens dan taaderesduaracad tauiene sascnsdevsaatease s 41 8 2 Instruction TRACE ssassn a a i S Ea 41 9 Red Trace SWV ViIGWS siiiacecsaddecocancenccdsadiscedaadencsssabcecaveadeucasadivs davanderdeaaacseouans 42 10 Red Trace SWV Configuration sesesesseseeeeeesesssssssrntrnnerssrsnnnnnrerssrsnnnrnreret 44 10 1 Starting Red Trace esnin anisan a aa aanas 44 10 1 1 Target Clock Speed seeriana kki taai 44 10 k2 Sample ratereraa A E O 45 10 2 Start TraC osie kanian a KARERE SERRO KANEKA E KRANA KEKEE KERRIES 45 e E E tee A EA E cence 45 104 Settings MArie a Aare aR ia ana iiini 45 10 5 Reset Trace o u ccccccccccescecsessecessecsecsecsccecsesseccessesaesassecseccecsscsecseeseees 45 10 6 Save Trace W neairt a e a aa E aiai 45 11 Red Trace Profiling 00 c cect ce eeee cece cece aaa teeter ee eeeeaaaaaaeeeeeeeeeeaaaaaaeeeeeeeees 46 TAA OVERVICW airetan R EORR 46 11 2 Profile view cst enacts aiatate ncaa aen teat een 46 12 Red Trace Interrupt tracing aserne iE 48 12 4 OVOWVIOW seenen E TENE EREN EREKET EROE 48 12 2 Interrupt Statistics view W oo ec ccccccceccscssececeseceeesecseeeecsseeecsaseeseaeeaeeaees 48 12 3 Interrupt Trace view TEER E E ae er 48 13 Red Trace Data Watch Trace
72. compatible libraries must be installed These include libgtk2 0 0 1386 libxtst6 1386 liopangox 1 0 0 1386 libpangoxft 1 0 0 1366 libidn11 i386 libglul mesa i386 libncurses5 i386 libudev1 i386 libusb 1 0 1386 libusb 0 1 1386 gtk2 engines murrine i386 Jabnsss 21386 Also note that that the glibc 2 15 shared library is required We are unable to provide assistance when installing on other Distros but the LPCXpresso forum on http Awww lpcware com is a good place to search for information or post questions Post installation issues dfu util fails to run On some Linux systems when booting LPC Link or LPC Link2 the supplied version of dfu util may fail to execute To resolve this you may need to install an additional component sudo apt get install libusb 0 1 4 1386 Ubuntu This should only be installed on systems where dfu util fails to run Connection Refused error When starting a debug session on some Linux systems a Connection refused error may be displayed This happens because a critical system library is not installed where we expect to find it To resolve this issue open a Terminal Window and execute the following commands if running a 64 bit version of Linux you must first install the 32 bit compatibility libraries as described above All information provided in this document is subject to legal disclaimers 2013 2014 NXP Semiconductors All rights reserved Rev 7 4 16 Septe
73. ct target for state machine v include initial state v include RESET signal Main file myStateMachine Action c file myStateMachine_actions c Dispatch function name myStateMachine_dispatch Prefix prefix Figure 19 2 The New State Machine Wizard settings for the software state machine LPCXpresso v7 User Guide All information provided in this document is subject to legal disclaimers 2013 2014 NXP Semiconductors All rights reserved User Guide Rev 7 4 16 September 2014 111 NXP Semiconductors LPCXpresso v7 User Guide 20 Red State The state machine editor 20 1 Overview The state machine editing perspective consists of a graphical editor and 6 views the LPCXpresso IDE automatically switches to this perspective when you load an rsn file In this section we will give you a brief overview of the main components of Red State s editor eoe Red State LPC18_Hitex_SCT_Blinky src blinky rsm Red Suite 4 ri a 100 e Ai sie B BRedState Project Explorer 23 A T Inputs for State Machine 23 xa o Name Type gt ESCMSISv2p00_LPC17xx aan TS Input pin 0 bool gt ESCMSISv2p10_LPC18xx_DriverLib AIL Kiai liaii DOWN bool gt E LPC18_Hitex_SCT_Base Transition DOWN amp amp maxcount Input pin 2 bool VESLPC18_Hitex_SCT_Blinky action 4 RESET bool gt ilincludes 1DOWN amp amp maxcoun CLEAR LED1 Input pin 4 bool v sre Input pin 5 bool Ms gt if cr_startup_Ipc18xx c RESET
74. ction list provides information about the traced instruction Grayed out text indicates that the instruction did not pass it condition A red background indicates a break in the trace due an ETM FIFO buffer overflow Instructions may be missing between red highlighted instruction and the proceeding entry in the trace view If the Stall option is available it can be used to help ensure this does not occur in subsequent traces A break in the trace may occur due to trace becoming disabled and then renabled for example to exclude the tracing of a delay function Breaks in the trace are indicated by a line drawn across the row A green background highlights the trigger packet that is generated after the trigger condition is met Press the trigger button to jump to this instruction in the instruction list All information provided in this document is subject to legal disclaimers 2013 2014 NXP Semiconductors All rights reserved Rev 7 4 16 September 2014 71 NXP Semiconductors LPCXpresso v7 User Guide Instruction Trace 3 E Ge hO Yrer Inst N PC Disassembly function m filename line no Info 0x000003b0 Idr r3 pc 8 0x3bc lt main 92 gt main src main c 59 0x000003b2 Idr r3 r3 0 main src main c 59 0x000003b4 adds rO r3 0 main src main c 59 0x000003b6 bl 0x318 lt ignoreMe gt main src main c 59 0x000003ba b n Ox36a lt main 10 gt main src main c 61 Start of sequence 0x0000036a idr r3 pc 80 Ox3bc lt
75. d choosing delete from the context menu Setting initial state In the software state machine the name of the initial state can be set in the State Machine Settings view Transitions Red State graphically represents transitions as arrows connecting two different states or looping back to the same state They also have a text label describing the signal and any actions associated with the transition A transition is composed of five elements a current state a next state a signal an action and a priority When the state machine s current state matches the transition s current state and the transition signal evaluates as true the transition can occur It is possible for the conditions of multiple transitions to be satisfied at the same time In that case the state machine will transition to the next state defined by the transition with the highest priority The SCT performs all actions from all satisfied transitions In the software state machine only the actions associated with the highest priority transition will get called If the transitions have equal priority the transition which will get fired is undefined but one transition will occur Adding transitions Transitions can be added in the Diagram Editor by selecting Transition from the pallet on the left First select the starting state for the transition and then select the end state for the transition All information provided in this document is subject to legal disclaime
76. d in the buffer for example There are multiple ways to use the ETB The simplest is continuous recording where the ETB is treated as a circular buffer overwriting the oldest information when it is full There All information provided in this document is subject to legal disclaimers 2013 2014 NXP Semiconductors All rights reserved Rev 7 4 16 September 2014 67 NXP Semiconductors LPCXpresso v7 User Guide LPCXpresso v7 User Guide User Guide are also more advanced options that allow the trace to be focused on code that is of interest to make the most of the ETB s memory This focusing is achieved by stopping tracing after some trigger or by excluding regions of code These modes of operation are described in this document Triggers The trigger mechanism of using instruction trace works by constantly recording trace to the ETB until some fixed period after a specified event This method allows the program flow up to around or after some event to be investigated There are two components that need to be configured to use triggers These are the trigger condition and the trigger counter The trigger condition is an event a Boolean combination of event resources When the trigger condition event becomes true the trigger counter counts down every time a word is written to the ETB When the trigger counter reaches zero no further packets are written to the ETB To use the ETB in this way the Trace Enable event is set to be
77. des the formatted value of the parameter passed into the macro Figure 14 4 shows example Host Strings output as generated by running the RDB1768cmsis2_HostStringsDemo project which can be found in the RDB1768cmsis2 zip example bundle provided with the LPCXpresso IDE LEDs now off LEDs now on msticks 60000 LEDs now off LEDs now on LEDs now off LEDs now on LEDs now off Figure 14 4 Host Strings output LPCXpresso v7 User Guide All information provided in this document is subject to legal disclaimers 2013 2014 NXP Semiconductors All rights reserved User Guide Rev 7 4 16 September 2014 58 NXP Semiconductors LPCXpresso v7 User Guide 15 Red Trace Instruction Trace 15 1 15 1 1 LPCXpresso v7 User Guide User Guide Instruction trace provides the ability to record and review the sequence of instructions executed on a target The LPCXpresso IDE provides support for instruction trace via on chip trace buffers Instruction trace makes use of the Embedded Trace Buffer ETB on Cortex M3 and M4 parts and the Micro Trace Buffer MTB on the Cortex M0 The instruction trace which is generated at high speed can be captured in real time and stored in these on chip buffers so that they can be downloaded at lower speeds without the need for an expensive debug probe The LPCXpresso IDE exposes the powerful Embedded Trace Macrocell ETM on Cortex M3 and M4 to focus the generated trace stored in the ETB Trace can b
78. ding a transition to the state diagram 18 3 7 Creating a signal Select the Add signal button in the Signals panel to add a new signal Double click on the name to change it and enter always Make this signal always evaluate as true by comparing a variable to itself Select the row in the bottom half of the signal panel that says click to change Right click on it and select Add MATCH from the context menu see Figure 18 11 none click to chag Match null null null nt null n Input Output Input Output timer Add Signal duration X Remove signal p Add Signal 7 i al Rename l68cmsis2 LedFla 3 Remove signal r Add AND p Set reset signal lal Rename ft Add ANID E Add MATCH Figure 18 11 Adding a match condition to a signal The match compares two elements Initially these are both null and have to be changed Right click on the first null and choose Output gt timer from the context menu Make sure LPCXpresso v7 User Guide All information provided in this document is subject to legal disclaimers 2013 2014 NXP Semiconductors All rights reserved User Guide Rev 7 4 16 September 2014 101 NXP Semiconductors LPCXpresso v7 User Guide that the element to be set is selected in the bottom half before right clicking otherwise the whole signal may get replaced Do the same for the other nu11 value to build the match condition timer timer 18 3 8 Adding
79. e 51 cannot be used simultaneously as they both require use of the DWT unit Instruction address Comparator Use the program counter PC value to set a watchpoint comparator resource true when the PC matches a certain instruction Choose Instruction from the comparator drop down and enter the PC to match in the match value field Use the Disassembly view to find the address of the instruction that you are interested in When the PC is equal to the entered match value the watchpoint comparator will be true otherwise it is false Setting a mask enables a range of addresses to be matched by a single comparator Set the Mask size to be the number of low order bytes to be masked The range generated by the mask is displayed next to the Mask size box The comparator event resource will be true whenever the PC is within the range defined by the mask Note Instruction addresses must be half word aligned Warning Instruction address comparators should not be applied to match a nor or an rT instruction as the result is unpredictable Data access address Comparators Data access address Comparators are event resources that watch for reads or writes to specific addresses in memory As with the instruction comparator the address is entered as the match value There are three different data access comparators Data R W true when a value is read from or written to the matched address e Data Read only true if a value is read from the ma
80. e 20 1 allows you to create and edit the triggers for transitions A signal consists of a logical combination of inputs and outputs It is split into two halves the top lists the signal names which can be associated with a transition and the bottom provides the detailed view of the signal and allows it to be constructed via the context right click menu The Action List view see number 5 in Figure 20 1 allows you to create and edit compound actions Only one action can be associated with a transition but this action may consist of multiple action elements Action elements can include setting variables or outputs and calling functions Like the Signals view it is split into two parts The top part lists the actions and the bottom part lists the action elements associated with the action selected in the top part Elements can be added and deleted using the context menu A single compound action may be used by multiple transitions The State Table view see number 6 in Figure 20 1 lists all of the transitions in the state machine and their actions and signals You can create new states and transitions by typing into the highlighted click to add row Transitions can also be edited here The State Machine Settings view behind the State Table view see number 7 in Figure 20 1 allows the user to change the name of the output file In the case of the software state machine the initial state and reset signals can b
81. e C project with the main routine consisting of an infinite white 1 loop that increments a counter All information provided in this document is subject to legal disclaimers 2013 2014 NXP Semiconductors All rights reserved Rev 7 4 16 September 2014 27 NXP Semiconductors LPCXpresso v7 User Guide 5 1 1 LPCXpresso v7 User Guide User Guide e For LPCOpen projects code will also be included to initialize the board and enable an LED C Project e Creates a simple C project with the main routine consisting of an infinite while 1 loop that increments a counter e For LPCOpen projects code will also be included to initialize the board and enable an LED C Static Library Project e Creates a simple static library project containing a source directory and optionally a directory to contain include files The project will also contain a liblinks xml file which can be used by the smart update wizard on the context sensitive menu to create links from application projects to this library project For more details please see the FAQ at http www lpcware com content faq Ipcxpresso creating linking library projects C Static Library Project e Creates a simple C static library project like that produced by the C Static Library Project wizard but with the tools set up to build C rather than C code The non LPCOpen wizards also include a further wizard Semihosting C Project e Creates a simple
82. e Figure 18 11 C Signals lt a RESET always didPush I buttonPushed buttonPushed A Xa Oo action 1 action 2 Operation Output GreenOff YellowOn Figure 18 13 Adding a match condition to a signal Now set the duration variable to 500 by following the same process In the yellow state we ll add a loop back transition which increments the timer while the timer does not equal the variable duration Add a new signal and name it wait Add a Not condition and then a match condition to the signal using the context menu Add timer LPCXpresso v7 User Guide All information provided in this document is subject to legal disclaimers 2013 2014 NXP Semiconductors All rights reserved User Guide Rev 7 4 16 September 2014 103 NXP Semiconductors LPCXpresso v7 User Guide and duration to the Match condition Add another function in the Output list and name it incTimer remembering to set its type to function To make the loop back transition select Transition as usual and single click on the yellow state Single click on the state again to finish the transition Add the wait signal to it and the call the incTimer function Add a new signal and name it continue Edit the signal in the Signal panel so that it matches the timer to the variable duration Drag the loop back transition label so that it is above the yellow state Now add a transition from the vellow state to the rea state with signal continue and add actions t
83. e LPCXpresso IDE installation For more details see User loadable flash drivers 38 The name location and size of this new region can be edited in place Note that when entering the size of the region you can enter full values in decimal hex by prefixing with ox or by specifying the size in kilobytes or megabytes For example e To enter a region size of 32KB enter 32768 0x8000 OF 32k e To enter a region size of 1MB enter ox100000 OF 1m Note that memory regions must be located on four byte boundaries and be a multiple of four bytes in size LPCXpresso v7 User Guide All information provided in this document is subject to legal disclaimers 2013 2014 NXP Semiconductors All rights reserved User Guide Rev 7 4 16 September 2014 35 NXP Semiconductors LPCXpresso v7 User Guide The screenshot in Figure 6 3 shows the dialog after the Add Flash button has been clicked Memory configuration editor Edit configuration for LPC1850 Flash driver selection Flash driver Memory configuration Type Name Flash Flash_00 RAM RamLoc96 RAM RamLoc40 RAM RamAHB32 RAM RamAHB16 RAM RamAHB_ETB16 Figure 6 3 Effect of Add Flash After updating the memory configuration click OK to return to the MCU settings dialog which will be updated to reflect the new configuration see Figure 6 4 LPCXpresso v7 User Guide All information provided in this document is subject to legal disclaim
84. e RDB1768 board 18 4 7 Other examples Be sure to check out other examples in the RedState examples folder The project RDB1768cmsis2_RedStateTrafficLCD Shows how the same state machine can be used with different peripherals LPCXpresso v7 User Guide All information provided in this document is subject to legal disclaimers 2013 2014 NXP Semiconductors All rights reserved User Guide Rev 7 4 16 September 2014 108 NXP Semiconductors LPCXpresso v7 User Guide 19 Red State New state machine Wizard 19 1 LPCXpresso v7 User Guide User Guide The New State Machine Wizard can create either SCT based state machines or software state machines Select the option you require from in the Target box after you have chosen the location to store the file SCT Wizard options The New State Machine Wizard has several options for the creating an SCT based state machine See Figure 18 15 Name A descriptor Target Choose between an SCT state machine and a software state machine For the SCT you also choose the MCU and on parts that contain multiple SCTs the ID of the SCT to program unified timer The SCT can be configured as a unified 32 bit counter or it can be split into two 16 bit counters the low counter and the high counter include initial state If checked special initial states will be automatically added to the state machine If the timer is unified an initial state named u_entry will be added If the timer i
85. e conflict resolution register as desired as this feature is not included in the current tool version 1 x The conflict enable register is also not programmed and needs to be written by the programmer if it is required to trigger a no change conflict interrupt DMAO and DMA1 support is potentially included in the tool and the parser but it has not been extensively tested SCT Tools FSM Designer for the State Configurable Timer Rev 2 0 09 June 2011 NXP Semiconductors LPCXpresso v7 User Guide All information provided in this document is subject to legal disclaimers 2013 2014 NXP Semiconductors All rights reserved User Guide Rev 7 4 16 September 2014 120 NXP Semiconductors LPCXpresso v7 User Guide 22 Red State Frequently Asked Questions 22 1 How do I migrate from a Red State project created in Red LPCXpresso v7 User Guide User Guide Suite LPCXpresso V4 to one created in this version The code generated by Red State in the current version is different from that generated within Red Suite LPCXpresso v4 It was updated to allow multiple state machines to be created in the same project Each state machine defines a prefix for its key data structures and functions to ensure that there are no conflicts between them The prefix is set in the State Machine Setting view see number 7 in Figure 20 1 This section details how to update an existing project to work with the new prefix naming convention We ass
86. e disassembled instruction The condition code for the instruction E for instructions that passed their condition and were executed N for instructions which were not executed The op code for the instruction The arguments for the op code Offset of the instruction within the function The C function name which the instruction belongs to The C source file that the instruction is associated with The line number in the C source file that the instruction is associated with All information provided in this document is subject to legal disclaimers 2013 2014 NXP Semiconductors All rights reserved Rev 7 4 16 September 2014 74 NXP Semiconductors LPCXpresso v7 User Guide 15 3 3 Instruction Trace Config view for the MTB Instruction trace with the MTB can be fully configured using the Instruction Trace Config view Open the Instruction Trace view by clicking Window gt Show View gt Instruction Trace or by clicking on the Instruction Trace Config button E8 in the Instruction Trace view Once the target is connected refreshing the view with the refresh button s will display the options for the target Changes made to the MTB configuration are only applied when the Apply button g is pressed Eg Instruction Trace Config soren Configure Unapplied changes in view press apply button v Settings Enable MTB M Enable on Start signal M Disable on Stop signal Buffer Detected 2 0 KB buffer _ mtb_buffer_ at
87. e ents eeeeeeeeeeaaeaeeeeeeeeeeeeaaaaeenees 80 16 3 Integrating a state machine with your project 00 0 cece eeeeeeneeeee eee eeeeeeee 80 17 Red State SCT state machine tutorial cc ccccececeeeeeee cease eeeeeeeeeeeeaeaaeaeeeees 81 Tret PRELeQuisSiteS serstak ikaenea tat sevdlavines eee ben Od veneer asennad 81 17 2 Creating a new project for the SCT cccceeeceeeeeeeeeaeaeeeeeeeeeeeeeaeaaeaeeeees 81 17 3 Adding a new SCT state machine to the project s 81 17 4 The blinky state Machine overview 0 0 eee eeecee cece ce neeeeeee ae eeeeeeaaeeeeeeaaeeeeees 83 17 5 Naming outputs and inputs 2 0 0 eee anae cece eee eres EEEREN REAK 83 17 6 Matching the timer cece cece eee eeeeee eee ee ee ae eeeeeaaeeeeeeeaeeeeeaaaeeeeeaeees 84 Tif TNO State o AERA A ER 84 177e Special states iorsin a e a E 84 17 7 2 Deleting a State oaie a EAE REA AEE EASRA AEREAS 84 Tero AOGING States semini a a A OS 84 17 8 Adding ranson setsi siR SRE 86 17 8 1 Creating a new transition cece eeeeeeeeee ce eeeeeeeeeeeeeeeeaeaaeeteeeeeeees 86 17 8 2 Adding a Signal to a transition 2 00 0 eeeceeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeaaes 87 17 8 3 Adding action elements to transitions eeeecceeeeeeeneeeeeeeeeeeeeees 88 17 854 TUmMING OM TEDI esseen EREE 89 1S0 TUmNG OM LED Lener nan S 90 17 8 6 Remaining transitions sss sessssukeisn enueia ankn KANKER 90 17 9 Generating the configuration code
88. e focused on specific areas of code or triggered by complex events for example On the Cortex M0 the MTB provides simple instruction trace using shared SRAM This documentation is divided into four parts e Getting Started 59 Tutorials to help you learn how to use instruction trace e Concepts 63 Technical background of instruction tracing e Reference 71 Details of the interface and operation of instruction trace e Troubleshooting 78 solutions to common challenges you may face Getting Started The following tutorials guide you through the process of using instruction trace Configuring the Cortex M0 for Instruction Trace Instruction trace on Cortex M0 targets requires that some SRAM need to be reserved The Micro Trace Buffer MTB that provides the Instruction Trace capabilities stores the execution trace to SRAM It is therefore necessary to reserve some SRAM to ensure that user data is not overwritten by trace data This configuration is not required for instruction trace on Cortex M3 and Cortex M4 MCU parts LPCXpresso s new project wizard will automatically includes a file called mtb c for parts which support MTB trace This file places an array called __mtb_buffer__into memory at the required alignment The MTB will then be configured to use this space as its buffer allowing it to record execution trace without overwriting user code or data The array __mtb_buffer__ should not be used within your code since the MTB
89. e set here too A prefix can also be included to allow multiple state machines to be used in the same project For the SCT the target MCU and the name of the header file included in the sct_user nh file is set here The target SCT can be changed here which is useful if you want to copy an existing state machine file which was designed for a different SCT States Once you have created a new state machine you can create states using either the Diagram Editor or the State Table Creating In the Diagram Editor you select state from the pallet on the left and place it by clicking in the diagram This will create a new state with an automatically generated name In the State Table you can create states by typing a name in the current or next state column This will start to create a transition using the name you entered If there is already a state with that name in the state machine it will be used in the transition otherwise a new state will be created Naming A state can be renamed in the Diagram Editor by single clicking on the state to select it and then single clicking on it again The state names are required to be unique and not blank There are a few restrictions on the naming of states for SCT state machines In the SCT there are several reserved names that indicate special states NXP describes them as follows All information provided in this document is subject to legal disclaimers 2013 2014 NXP Semiconductors All rights
90. e the trace was configured but rather it would stop after words after trigger number of words was written to the ETB leaving most of the ETB unused Note that setting the trigger position all the way to the right such that words after trigger is zero will disable the trigger mechanism Timestamps When the timestamps check box is selected and implemented a time stamp packet will be put into the packet stream The interval between packets may be configurable if the target allows it or may be generated at a fixed rate If supported there is a Timestamp event Timestamps are generated when the event fires A counter resource could be used to periodically enter timestamps into the trace stream for example Note ARM recommends against using the always true condition as it is likely to insert a large number of packets into the trace stream and make the FIFO buffer overflow Note that a time of zero in the time stamp indicates that time stamping is not fully supported Debug Request The ETB can initiate a debug request when a trigger condition is met This setting causes the target to be suspended when a trigger packet is created Note There may be a lag of several instructions between the trigger condition being met and the target being suspended Output all branches One of the techniques used by the ETM to compress the trace is to output information only about indirect branches Indirect branches occur when the PC program count
91. el or by right clicking in the State Machine editor window and selecting Generate Action Template Warning Generate Action Template will overwrite any existing content in your ledState_actions c file as well as regenerating the other three files You are expected to edit the ledstate_actions c file The other files are regenerated each time you press the Generate Code button You are strongly advised not to edit these other files as your changes will get overwritten 18 4 3 Editing the actions C file Press the Generate Action C Template button to make the function bodies for the action functions The LedFlash example contains the 1eds n and leds c files which contain code for turning on and off the LEDs Include the ieds n in the 1eastate_actions c file include leds h The LEDs can be turned on by the function 1ea_on int and off using 1ed_off int passing it a reference to the LED as the parameter The LEDs are identified by the constants defined in ieds n see Table 18 2 Table 18 2 The LED ids Representation Red Yellow Green Walk Sign Note that the unusual ordering of the LEDs is due to their layout on the RDB board Enter the appropriate calls for turning the LEDs on and off in the function bodies Action GreenOff void act_GreenOff led_off LED_5 green led Action GreenOn void act_GreenOn led_on LED_5 green led Action RedOff void act_RedO
92. ence starts again either from ep1 if pown is low or from Lepa4 if down is high Naming outputs and inputs The Outputs for State Machine and Inputs for State Machine views contain the default inputs and outputs for the SCT The blue text indicates that it is a fixed property The black text is editable Start by giving descriptive names to the output pins 0 3 that will represent the LEDs E Outputs for State Machine 3 P xX 0O H Inputs for State Machine 52 Name Type Output pind bool Output pinl bool LED1 bool LED2 bool LED3 bool LED4 bool Output pin6 bool Source preload Name Type Source CTOUT_O DOWN bool CTIN_O CTOUT_1 Input pin 1 bool CTIN_1 CTOUT_2 Input pin2 bool CTIN_2 CTOUT_3 Input pin 3 bool CTIN_3 CTOUT_4 Input pin 4 bool CTIN_4 CTOUT_5 Input pin 5 bool CTIN_S CTOUT_6 RESET bool CTIN_6 Figure 17 2 The output and input views for the blinky state machine LPCXpresso v7 User Guide User Guide Click on Output pin 2 in the Name column and type tzpi to rename it Next click in the preload column and select FALSE from the drop down list The output is initialized to this value on a restart Name the next three output pins to correspond to LEp2 LED3 and LED4 and set their preload values to FALSE see left panel of Figure 17 2 Note Two outputs cannot have the same name Attempting to change a name to one that is already being used by another output will be ignored and the output will keep its original name
93. er jumps to an address that cannot be inferred directly from the source code The ETM provides the option to output packets for all branch instructions both indirect and direct Checking this option will output a branch packet for every branch encountered These branch packets enable the reconstruction of the program flow without requiring access to the memory image of the code being executed This option is not usually required as the Instruction trace tool is able to reconstruct the program flow using just the indirect branches and the memory image of the executed code This option dramatically increases the number of packets that are output and can result in FIFO overflows resulting in data loss or reduced performance if stalling 65 is enabled It can also make synchronization harder e g in triggered traces as you can end up with fewer l Sync packets in the ETB Data Watchpoint and Trace The data watchpoint and trace DWT unit is an optional debug component Instruction trace uses its watchpoint to control trace generation The Red Trace Data Watch view uses it to monitor memory locations in real time without stopping the processor All information provided in this document is subject to legal disclaimers 2013 2014 NXP Semiconductors All rights reserved Rev 7 4 16 September 2014 69 NXP Semiconductors LPCXpresso v7 User Guide LPCXpresso v7 User Guide User Guide Warning Instruction Trace and Data Watch Trac
94. er user password has been entered Installation on 32 bit distributions The LPCXpresso IDE is a 32 bit product that should run on most 32 bit Linux distributions On some distributions some additional packages may be required for USB compatibility see below for the latest information Note that GLIBC v2 15 or greater is required Enabling the LPCXpresso IDE internal Web Browser On most recent Linux distributions an additional package must be installed to enable the IDE s internal Web Browser If this is not installed any web pages displayed by the IDE will be displayed in the system default Web Browser Ubuntu Run the following command to install the webkit package that enables the internal Web Browser sudo apt get install libwebkitgtk 1 0 0 Fedora Run the following command to install the webkit package that enables the internal Web Browser sudo yum install webkitgtk i686 Installation on 64 bit distributions The LPCXpresso IDE is a 32 bit product For 64 bit versions of Linux the 32 bit compatibility components must be installed Note that all of these components must be installed otherwise the installation program will not run and the LPCXpresso IDE will not function correctly To install these components from the command line follow the instructions below for your distribution Ubuntu 13 10 or later Ubuntu 13 10 no longer provides a convenient method to install all 32 bit compatible libraries s
95. er virtual machines It is possible to install the LPCXpresso IDE within a virtual machine VM environment Generally such installations cause few issues However due to the nature of VMs the most likely problems relate to sharing of resources USB memory and possible timeouts during debug operations In the unlikely event that you experience issues we welcome reports but due to the nature of VM operation can offer no guarantee of resolution Licensing Overview An LPCXpresso IDE installation will take one of the following three forms e Unregistered the initial product state following a new customer installation features are restricted and code size is restricted to 8KB e Free Edition following installation of a Free Edition Activation code maximum debug download size is limited to 256KB All information provided in this document is subject to legal disclaimers 2013 2014 NXP Semiconductors All rights reserved Rev 7 4 16 September 2014 10 NXP Semiconductors LPCXpresso v7 User Guide 2 3 1 2 3 2 LPCXpresso v7 User Guide User Guide 2 4 2 5 e Pro Edition following installation of Purchased Pro Edition Activation code no restrictions Note the current installation type can be identified by Help gt Display License Type Users of earlier versions of LPCXpresso IDE If you have previously been using LPCXpresso IDE v5 x or earlier then note that your previous activation code is not compatible with
96. ers 2013 2014 NXP Semiconductors All rights reserved User Guide Rev 7 4 16 September 2014 36 NXP Semiconductors LPCXpresso v7 User Guide MCU settings Target NXP LPC1850 LPC1820 LPC1822 LPC1823 LPC1825 LPC1827 LPC1830 LPC1833 LPC1837 LPC1850 LPC1853 LPC1857 LPC2000 LPC2900 Laamann Target architecture cortex m3 Memory details LPC1850 Flash driver LPC18_43_SPIFI_4MB_64KB cfx Type Name Location SPIFI_ 4MB 0x14000000 RamLoc96 0x10000000 RamLoc40 0x10080000 RamAHB32 0x20000000 RamAHB16 0x20008000 Refresh MCU Cache Restore Defaults Apply Cancel NXP LPC1850 Ipcl8proj Figure 6 4 Updated MCU Settings Note that once the memory details have been modified the selected MCU as displayed on the LPCXpressolDE Status Bar at the bottom of the IDE window will be displayed with an asterisk next to it This provides an indication that the MCU memory configuration settings for the selected project have been modified without needing to open the MCU settings dialog 6 2 2 Restoring a memory configuration To restore the memory configuration of a project back to the default settings simply reselect the MCU type or use the Restore Defaults button on the MCU Settings properties page 6 2 3 Copying memory configurations Memory configurations can be exported for import into another project Use the Export and Import buttons for this pur
97. ers and examples ccceeeeeeeeeeceeeeeaeeeeeeeeeeeeeeeaeaaaeeeeseeeees 17 4 2 Importing an Example project ccceeeeee cents ee ee eee ee eeeeeeeeeeeaeeeeeaeeeeeeaaees 17 4 2 1 Importing Examples for the LPCXpresso812 Development Board 19 4 3 Building Projects sessios ven cecsbasbercasenandtusbugercaseeedeesbaugeteaashes 20 4 3 1 Build CONfiQuratiOnS 20 2 cece cece ceee nanan AREARE ETA S 20 4 4 Debugging a PFOJSCE vstss vecdieveicncesssavodews KEKE KRA NUENEN coceasen deans AA NKA REA ANESSE RAN 21 4 4 1 Debug Emulator Selection Dialog ccceceeeeeeeeeeeeeeeeeeeeeeeeaaee 22 4 4 2 Controlling execution cece cece ee cneneeeeeeeeeeeeaeaaaeeeeeeeeeeeaeaaaaeeeeeess 25 5 Creating Projects using the Wizards ccccceeeeeee cece eee eeeeeeeeeeeeaeaaeateeeeeeeeeaeaaea 27 5 1 Creating a project using the wizard c cece eeeeeeeeeeeeeeee ee aeaaeeteeeeeeeeeaeaaeaees 27 5 1 1 LPCOpen Library Project Selection cccccceseeeeeeeeeeeeeeeaeeeeeees 28 5 1 2 CMSIS CORE Selection 0 ccceceeeeeeeaeeeeeeeeeeeeeeeaeaaaeteeeeeeeeeaeaaea 29 5 1 3 CMSIS DSP library Selection cecceceeeeeeeeeeeeeaeaeeeeeeeeeeeeeaeaaeaees 30 5 1 4 Peripheral Driver selection cece eeeeeeceeeeeee aa eeeeeeaaeeeeeeaaeeeeeaaee ees 30 5 1 5 Code Read Protect cccccccceecseeeeeeeeeeeaeeeteeeeeeeeeaeaaaaeeeeeeeeeaeaaea 30 5 1 6 Enable use of floating poi
98. es instruction trace by detecting non sequentially executed instructions and recording where the program counter PC originated and where it branched to Given the code image and a this information about non sequential instructions the instruction trace component of Red Trace is able to reconstruct the executed code The huge number of instructions executed per second on a target generate large volumes of trace data Since the MTB only has access to a relatively small amount of memory it gets filled very quickly To obtain useful trace a developer can configure the MTB to only focus on a small area of code to act as a circular buffer or download the content of the buffer when it fills up Additionally all three of these techniques may be combined The following sections contain detailed information about the MTB s operation and use e Enabling the MTB 64 options for controlling the MTB e MTB memory configuration 64 how the MTB uses memory e MTB Watermarking 65 reacting to the buffer filling up e MTB Auto resume 65 combining multiple trace buffer captures Warning The MTB does not have its own dedicated memory The memory map used by the target must be configured so that some RAM is reserved for the MTB The MTB must then be configured to use that reserved space as described in the Configuring the Cortex M0 for instruction trace 59 in the Getting Started section Enabling the MTB The Micro Trace Buffer MTB can be e
99. exible development system for the LPC812 MCU It offers similar expansion capabilities as the LPCXpresso V2 boards but with a built in LPCXpresso v7 User Guide All information provided in this document is subject to legal disclaimers 2013 2014 NXP Semiconductors All rights reserved User Guide Rev 7 4 16 September 2014 5 NXP Semiconductors LPCXpresso v7 User Guide CMSIS DAP debug probe As well as being supported by the LPCXpresso IDE it also offers compatibility with mbed Figure 1 4 LPC800 MAX Board For more information visit http www pcware com lpc800 max LPCXpresso v7 User Guide All information provided in this document is subject to legal disclaimers 2013 2014 NXP Semiconductors All rights reserved User Guide Rev 7 4 16 September 2014 6 NXP Semiconductors LPCXpresso v7 User Guide 2 Installation and Licensing 2 1 2 2 2 2 1 LPCXpresso v7 User Guide User Guide Host Computer Hardware Requirements Before installation of the LPCXpresso IDE you should make sure your development host computer meets the following requirements A standard x86 PC with 2GB RAM minimum 4GB recommended and 600MB of available disk space running one of the following operating systems e Microsoft Windows Vista e Microsoft Windows 7 e Microsoft Windows 8 and Windows 8 1 e Linux Ubuntu 12 and later e Linux Fedora 18 and later An x86 Apple Macintosh with 2GB RAM minimum 4GB
100. ext gt Cancel Finish Figure 18 3 Choosing a filename for a new state machine Select Software state machine from the Target drop down list and keep the other default options For a full description of the options see the Software State Machine Wizard options 110 Press Finish to complete the Wizard the LPCXpresso IDE will switch to the Red State perspective The newly created state machine rsm file is added to your source folder and opened in the State Machine diagram editor Finally select the State Machine Settings view usually behind the State Table view In the prefix field enter the text pf This string will be used to prefix components in the generated C code Prefixes are used to avoid naming conflicts between different state machines in the same project 18 3 2 Adding states to the State Machine The traffic light will be modeled using six states see Table 18 1 The Wizard should have already created the initial state state 1 Create the remaining 5 states in the editor by LPCXpresso v7 User Guide All information provided in this document is subject to legal disclaimers 2013 2014 NXP Semiconductors All rights reserved User Guide Rev 7 4 16 September 2014 96 NXP Semiconductors LPCXpresso v7 User Guide doing the following first click on the state button in the state machine diagram editor second click in the editor where you d like to place the new state and then release the mouse button see
101. ff led_off LED_3 Red LPCXpresso v7 User Guide All information provided in this document is subject to legal disclaimers 2013 2014 NXP Semiconductors All rights reserved User Guide Rev 7 4 16 September 2014 106 NXP Semiconductors LPCXpresso v7 User Guide 18 4 4 Accessing the outputs The output variables are stored in a struct defined in the 1edstate n file Its name is of the form prefix_outputs where prefix is defined in the State Machine Settings view A pointer to the output struct is passed to the dispatch function From within the action functions you can get this pointer by calling the prefix_getoutput function We use this pointer to increment the timer value SAGO nse ine merni void pf_incTimer pf_outputs out pf_getOutput out gt timer 18 4 5 Setting inputs in interrupt handlers LPCXpresso v7 User Guide User Guide The state machine will now happily sit in its creen state Now we need to hook up an external interrupt so that the state machine knows when a pedestrian has pushed a button We use code imported from the RDB1768cmsis2_ExtInt project the einto c and einto n files This code is included in our base project Include the einto n header file in the main_ledflash c file include Meint hu Next add the following line to initialize the interrupt immediately after the LEDs have been initialized Setup External Interr
102. g 4 Enter host string name and parameter size LPCXPRESS v Parameter Size 24 bits Value Val Ox w 06x Figure 14 2 Adding a new Host String Name Name The name of the Host Strings Macro that will be invoked by the application code running on the target Note that this name will be automatically prefixed with ys_ when the hoststrings h header file is generated by the Host Strings process during project build Note that the host string name is subject to the naming restrictions for C pre processor macros Parameter Size e An optional parameter can be passed as part of a call to a Host Strings Macro This can be of size 8 bit 16 bit or 24 bit or specified as None if no parameter is required Note that the Host Strings mechanism does not support the passing of full 32 bit quantities as a parameter such parameters will be truncated to 24 bits by the macro Value e String that will be displayed in the Host Strings view within the LPCXpresso IDE when the Host Strings Macro is executed on the target By default when you add a new Host String the value will be set to the name of the Host String plus the parameter in hexadecimal format However this value can be edited as required The format of the parameter is inf width ctri where inf b h Or w for byte half word truncated to 24 bits e ctrl u Or a for decimal x or x for hexadecimal or for binary width optional a number to specify the mi
103. g session and if necessary you have selected the appropriate probe to connect to your application is automatically downloaded to the target a default breakpoint is set on the first instruction in main the application is started by simulating a processor reset and code is executed until the default breakpoint is hit Program execution can now be controlled using the common debug control buttons as listed in Table 4 1 which are displayed on the global toolbar The call stack is shown in the Debug View as in Figure 4 10 Window e 2 0 oy Quick Access E K Develop T C C Debug 22 i gt E 4 Fe Blinky Debug C C Code Red MCU Application 4 3 Blinky axf 4 gi Thread 1 lt main gt Suspended Step NVIC_EnableIRQQ at core_cm0plus h 613 0x5e4 init_mrt at lpc8xx_mrt c 101 0x68c main at main c 72 Od b4 pal gdb Figure 4 10 Debug Controls Table 4 1 Program execution controls Description Keyboard Shortcut Restart program execution from reset Run Resume the program F8 Step Over C C line F6 Step into a function F5 Return from a function F7 Stop the debugger Ctrl F2 Pause Execution of the running program Show disassembled instructions Note In LPCXpresso IDE v4 and earlier the common debug control commands were found on the Debug View s local toolbar rather than on the global toolbar Moving them LPCXpresso v7 User Guide All information provided in this doc
104. h the same name to different events the macro may get defined twice to different values For example you may find the following in sct_fsm n define SCT_IRQ_EVENT_samplingComplete 5 define SCT_IRQ_EVENT_samplingComplete 6 In this case add a new IRQ output in Red State and replace one of the existing IRQs in the state diagram with the new one Software state machine outputs In a software state machine you can have the following types e variable like the input generic variables their type is entered in the source column A preload value can be assigned to initialize the variable e function a function to be called It is defined in the action header file and the body should be written in the main action C file Currently passing of parameters to the function is not supported Preset values Variables in both the SCT and software state machine can have a preset value You can set a preset value by entering it into the preset column in the Output view Variables are initialized to their preset values when the state machine is reset Note that preload values are not type checked by the code generator The content of the preload cell will be directly entered into the generated code as the RHS of an assignment For example to initialize an output of type char with the character a you need to enter a in the preload cell including the single quotes whereas to initialize an int you would simply directly enter a numbe
105. he Instruction Trace Config view 76 Check the Stall processor box and select a stall level with the slider ETM events Events are boolean combinations of two event resources 66 These events can be used to control when tracing is enabled or to decide when the trigger will occur for example The available event resources are dependent on the chip vendor s implementation Events can be specified in the Instruction Trace Config view 76 For details on how to build these events see ETM event configuration 77 Event Resources Event resources are used by the ETM 65 to control the ETM s operation They can be combined to form ETM events 66 Different sets of event resources are implemented by different silicon vendors The following event resources are supported by Red Trace e Watchpoint comparators 66 match on addresses and data values e Counters 66 match when they reach zero e Trace start stop unit 67 combine multiple input e External 67 match on external signals Hard wired 67 always match Watchpoint comparator event resource Watchpoint comparators are event resources that facilitate the matching of addresses for the PC and the data access as well as matching data values They are implemented by the Data Watchpoint and Trace 69 DWT component Counter event resource A target may support a single reduced counter on counter 1 The reduced counter decrements on every cycle This event
106. he arrow bends 3 in Figure 20 1 Drag one of the two smaller handles to create a new bend in the line 2 in Figure 20 1 You can create multiple bends in the arrow by dragging the smaller selection handles To remove a bend in the arrow drag the larger handle between two other large handles and it will become a small handle again All information provided in this document is subject to legal disclaimers 2013 2014 NXP Semiconductors All rights reserved Rev 7 4 16 September 2014 15 NXP Semiconductors LPCXpresso v7 User Guide Figure 20 2 Selection handles on the transition arrow 20 4 Signals A signal is a logical combination of inputs and outputs Signals are constructed in the Signal view To create a new signal single click the Add signal button in the Signal view This will add a new signal name to the list in the top half You can rename the signal by double clicking on it or using the Rename button in the Signal view No two signals should have the same name The logic of the signal is set in the bottom half of the Signal view Initially a signal will have an entry saying none Right clicking on that element will allow you to replace it with an appropriate input or output You can also combine elements using AND and OR Note that setting a signal will overwrite the selected element If the signal name in the top half is the active selection then the root of your signal will get replaced If you just want to
107. he currently selected instruction in the Instruction Trace View to the corresponding line of source code in the source code viewer The line of source code that generated the selected instruction will be highlighted in the source code viewer Tip You can use the the cursor keys within the Instruction Trace View to scroll through the executed instructions instruction in the Instruction Trace View to the corresponding instruction in the disassembly viewer The selected instruction will be highlighted in the disassembly viewer Note The target must be suspended to allow the disassembly view to display the code on the target Tip You can use the the cursor keys within the Instruction Trace View to scroll through the executed instructions All information provided in this document is subject to legal disclaimers 2013 2014 NXP Semiconductors All rights reserved Rev 7 4 16 September 2014 73 NXP Semiconductors LPCXpresso v7 User Guide The Toggle profile button enables and disables the display of profile information corresponding to the currently downloaded instruction trace When the display of profile information is enabled a column appears in the disassembly view that shows the count of each executed instruction that was captured in the trace buffer Lines of source code whose instructions were recorded in the trace buffer are highlighted in the source view Tip You can customize the display of the highlight
108. hen starting a new evaluation or product development we would recommend the use of LPCOpen More information on LPCOpen together with package downloads can be found at http www pcware com Ipcopen Importing an Example project The Quickstart Panel provides rapid access to the most commonly used features of the LPCXpresso IDE Using the Quickstart Panel you can quickly import example projects create new projects build projects and debug projects On the Quickstart Panel click on the Start Here sub panel and click on Import project s All information provided in this document is subject to legal disclaimers 2013 2014 NXP Semiconductors All rights reserved Rev 7 4 16 September 2014 17 NXP Semiconductors LPCXpresso v7 User Guide W Quick 3 69 Varia Dz Outline Ef Expr E Start here Import project s ej New project i Build all projects A Build i project settings Import project s from XML Description Quick Settings v i i rt project tO archi Figure 4 1 Import project s As per Figure 4 2 from the first page of the wizard you can e Browse to locate Examples stored in zip archive files on your local system These could be archives that you have previously downloaded for example LPCOpen packages from the NXP LPCware website or the supplied but deprecated sample code bundles located within the Examples subdirectory of your LPCXpresso IDE installat
109. hrough the rows in the Instruction Trace view As a row becomes selected the source code corresponding to the instruction in that row should be highlighted in the source code editor The disassembly view should also update with the current instruction selected There can be a slight lag in the disassembly view as the instructions are downloaded from the target and disassembled Step 5 Highlight the captured instructions In this step we will turn on the profile view In the source code editor the instruction which were traced will be highlighted This highlighting can be useful for seeing code coverage In the disassembly view each instruction is labeled with the number of times each it was executed See Toggle profile information 74 for more information Stop trace when a variable is set In this tutorial you will configure instruction trace to stop when the value of a variable is set to a specific value This tracing could be useful for figuring out why a variable is being set to a garbage value Suppose we have a variable that is mysteriously being set to oxf when we expect it to always be between oxo and oxa for example The set up depends on which trace buffer your target implements See the following section for the detailed instructions for your target e Cortex M3 or M4 using ETB 61 Note For Cortex M0 based systems this functionality requires additional hardware to be implemented alongside the MTB LPC8xx does not p
110. iconductors All rights reserved Rev 7 4 16 September 2014 81 NXP Semiconductors LPCXpresso v7 User Guide Select a wizard Wizards v E General File C Folder Project Untitled Text File gt C C gt CVS Y Red State Red State Machine file generator Figure 17 1 Creating a new state machine Select the Red State Machine file generator and press the Next button In the New State Machine dialog make sure that the src folder is selected Enter the file name for the state machine file e g b1inky and press Next Note that this name will have rsm appended to it and will be added to the project If an rsm file with that name already exists in the workspace an error message will appear and you will need to choose a different name for the file Pressing the Finish button would have resulted in the use of the default settings creating an SCT state machine with a unified timer and initial and always states pre populated For this example leave the options in their default conditions except for the unified timer option Only the low timer will be used so deselect the unified timer option You also need to choose the target MCU for example LPC18xx Hitting Finish creates a new state machine and opens it in the Red State editor The perspective is automatically switched to the Red State perspective This perspective shows the different views associated with editing the state machine It is ope
111. in The Maximum time spent in a single invocation of the routine Min time between The minimum time between invocations of the interrupt e Max time between The maximum time between invocations of the interrupt Total time between The total time spent outside of this interrupt routine e Time since last The time elapsed since the last time in this interrupt routine First time run The time relative to the start of trace that this interrupt routine was first run e Current time The elapsed time since trace start Overhead The cumulative overhead time elapsed entering and exiting all handlers e Sleep Time the processor spent sleeping Interrupt Trace view i The Interrupt Trace view provides a time based graph of interrupts and exceptions and shows their nesting and when the exception is dismissed This gives a visual representation of time in interrupt service routines and the transitions between them An example screenshot is shown in Figure 12 2 All information provided in this document is subject to legal disclaimers 2013 2014 NXP Semiconductors All rights reserved Rev 7 4 16 September 2014 48 NXP Semiconductors LPCXpresso v7 User Guide E Console 4 Tasks Profile f Data Watch Int Statistics ly Int Trace 3 Host Strings EL Problems Executables J Memory Start Trace Al oma R 99 E a E A E A A E N V E E E E E E E eT 657 1024 Events ITT A gt Irq4 TIMER3
112. ing by editing the Profile info in source view item in the preferences panel under amp 8General gt Editors gt Text Editors gt Annotations Save trace Fe The Save trace Fins button saves the content of the Instruction Trace View to a csv file These files can be large and may take a few seconds to save Jump to trigger Trace downloaded from an ETB the embedded trace buffer on the Cortex M3 and M4 may contain a trigger packet If the trace stream contain such a packet the jump to trigger button will show it in the instruction trace view Stop auto resume ui When using the MTB auto resume feature 65 the user may not have time to press the suspend button or the Cancel button in the download trace progress dialog box as the target is being rapidly suspended and restarted Pressing the Stop auto resume button al will turn off the auto resume feature so that the target will suspend the next time the MTB reaches its watermark level without resuming Select columns 44 You can choose the columns shown in the instruction list using the select columns action 48 The available columns are listed below Rearrange the column ordering in the table by dragging the header of the columns Table 15 1 Instruction view column descriptions LPCXpresso v7 User Guide User Guide Description The index of the instruction in the trace The timestamp associated with an instruction The address of the instruction Th
113. ion Browse to locate projects stored in directory form on your local system for example you can use this to import projects from a different workspace into the current workspace Browse LPCOpen packages to visit LPCware and download appropriate LPCOpen package for your target MCU This option will automatically open a web browser onto an appropriate links page on the NXP LPCware website LPCXpresso v7 User Guide All information provided in this document is subject to legal disclaimers 2013 2014 NXP Semiconductors All rights reserved User Guide Rev 7 4 16 September 2014 18 NXP Semiconductors LPCXpresso v7 User Guide Ei Import project s Import project s Select the examples archive file to import Projects are contained within archives zip or are unpacked within a directory Select your project archive or root directory and press lt Next gt On the next page select those projects you wish to import and press lt Finish gt Project archive zip Archive Project directory unpacked Root directory LPCOpen LPCOpen is the recommended code base for many NXP LPC Microcontrollers Download and extract the LPCOpen package for your MCU and then re run this Wizard to import Browse LPCOpen packages Figure 4 2 Import Examples To demonstrate how to use the Import Project s functionality we will now import the LPCOpen examples for the LPCXpresso812 development board
114. ion of data will continue while refreshing of the view is paused Refresh Press the Refresh button Ss to start the collection of trace data if trace had not already been started and to perform a single update refresh of the view The collection of data will continue You may switch between continuous refresh using the Start Trace button and individual refreshes of the view in order to inspect the collected data in more detail Settings 42 If it becomes necessary to change the system clock speed or the data sampling rate during a debugging session use the Settings button I to notify Red Trace Any changes will stop data collection Reset Trace Press the Reset Trace button to reset any cumulative data presented in the view The collection of data will continue Save Trace amp Press the Save Trace button mA to save the contents of the trace view to a file in CSV format This can be useful for offline analysis of the data in a spreadsheet for example All information provided in this document is subject to legal disclaimers 2013 2014 NXP Semiconductors All rights reserved Rev 7 4 16 September 2014 45 NXP Semiconductors LPCXpresso v7 User Guide 11 Red Trace Profiling 11 1 Overview Profile tracing provides a statistical profile of application activity This works by sampling the program counter PC at the configured sample rate typically around 50 kHz It is completely non intrusive to the
115. is configuration is created by Red State when the Generate Code button in the State Table is pressed or when Generate Code is selected from the context menu in the editor This code can now be run on the target Note If the state machine is altered the code has to be regenerated the code generation is not performed automatically when you build your project 17 9 1 Files generated When the Generate Code button is pressed four files are generated overwriting any previous versions The first file is the sma file which contains the description of the state machine to be processed by NXP s parser NXP s parser then generates the sct_fsm h and sct_fsm c files that contain the configuration code for setting up the SCT Red State also generates the sct_user h that sets up the constants used in the sct_fsm h and sct_fsm c files LPCXpresso v7 User Guide All information provided in this document is subject to legal disclaimers 2013 2014 NXP Semiconductors All rights reserved User Guide Rev 7 4 16 September 2014 91 NXP Semiconductors LPCXpresso v7 User Guide 17 9 2 Issues and warnings 17 10 LPCXpresso v7 User Guide User Guide The state machine needs to operate within the constraints of the SCT Red State generates warnings if the state machine cannot be implemented on the SCT The configuration files are not be generated or updated in this case Most issues will be detected as you construct the state machine
116. is high Right clicking on it and choosing an option from the Set I O condition submenu can change this behavior To add the signal to the transition right click on the transition s label and choose Reset from the Set Signal context menu Adding action elements to transitions The reset transition should turn off all the LEDs A transition can have at most one action associated with it This action however can have multiple actions elements associated with it For example an action element might set or clear an output pin Right click on the RESET transition label and choose Add Action gt CLEAR gt LED1 Repeat for the other three LEDs see Figure 17 8 Adding action elements from the context menu automatically creates an action to contain the chosen action element if the transition has no action associated with it Otherwise it appends the chosen action element to the existing action All information provided in this document is subject to legal disclaimers 2013 2014 NXP Semiconductors All rights reserved Rev 7 4 16 September 2014 88 NXP Semiconductors LPCXpresso v7 User Guide L_ALWAYS RESET action 1 CLEAR LED1 CLEAR LED2 CLEAR LED3 CLEAR LED4 Figure 17 8 The RESET transition To keep the state machine in the t_zntry state while the RESET signal is high even if other transitions are fired set the transition priority property Enter 100 in the priority column for this transition in the State Table
117. ken to correctly identify the event associated with an IRQ When the state machine fires an IRQ it is handled by the SCT IRQ handler e g void ScT_IRQHandler void The handler must use the SCT event flag register Lpc_sct gt zvF ac to identify which event raised the interrupt The i th bit of this register corresponds to the event and is 1 if that event has occurred since reset or since a was last written to it Setting a bit to 1 will clear it The code generated by Red State includes macro definitions linking IRQs with events These take the form of your IRQ name prefixed with sct_1rRo_zvent_ To acknowledge the interrupt the handler should clear the corresponding bit as follows LPC_SCT gt EVFLAG 1 lt lt SCT_IRQ_EVENT_samplingComplete All information provided in this document is subject to legal disclaimers 2013 2014 NXP Semiconductors All rights reserved Rev 7 4 16 September 2014 118 NXP Semiconductors LPCXpresso v7 User Guide 20 7 2 20 7 3 LPCXpresso v7 User Guide User Guide Where sctT_1IRQ_EVENT_samplingComplete IS a generated define in the sct_fsm h made by the parser file corresponding to an IRQ named samplingComplete in the state diagram Since there is not necessarily a one to one relationship between events and transitions multiple transitions may be handled by a single event it can be appropriate to use the same IRQ on multiple transitions However if the parser assigns IRQs wit
118. llection of source files and settings In the LPCXpresso IDE a perspective is a particular collection of Views that are grouped together to be suitable for a particular use For example the Develop perspective the C C programming perspective and the Debug perspective Red Probe Debug probe produced by Code Red Technologies that is compatible with both SWD SWV and JTAG debug targets For Cortex Mx based devices it will normally default to using SWD SWV For other ARM processors it will default to using JTAG Red Probe Higher performance version of Red Probe Red Suite The Code Red Technologies IDE Integrated Development Environment based on Eclipse with extensions for embedded development Supported MCUs from a number of vendors No longer in development Red Suite NXP Edition Version of Red Suite for NXP microcontrollers only with variants with 256KB and 512KB code download limits Acted as a low cost upgrade path for the free LPCXpresso IDE No longer in development Redlib Proprietary non GNU C90 runtime library with some C99 extensions Generally provides reduced code size compared to Newilib Semihosting The ability to use IO on your debugger host system for your target embedded system For example a printf will appear in the console window of the debugger SWD Serial Wire Debugging Single Wire Debugging This is a debug connection technology available on Cortex M based parts that allows debug thr
119. ly to result in a hard fault Trace the most recently executed instructions This tutorial will get you started using the Instruction Trace capabilities of Red Trace You will configure the target s trace buffer as a circular buffer let your program run on your target suspend it and download the list of executed instructions Note Instruction Trace depends on optional components in the target These components may or may not be available on the LPC device you are working with See the Instruction Trace Overview 63 for more information First you will debug code on your target You can import an example project or use one of your own Step 0 Configure memory if using a Cortex M0 parts If you are using a Cortex M0 part with an MTB you must first configure the memory usage of your code to avoid conflicts See the Configuring the Cortex M0 for instruction trace 59 for instructions on how to do this Step 1 Start the target and show the Instruction Trace view 1 Build and execute your code on the target 2 Suspend the execution of your target by selecting Run gt Suspend 3 Display the Instruction Trace view by clicking Window gt Show View gt Instruction Trace Step 2 Configure the trace buffer 1 Press the Record Trace Continuously button in Instruction Trace 2 Resume execution of your target by selecting Run gt Resume The trace buffer should now be configured as a circular buffer and your target should
120. main 92 gt main src main c 50 0x0000036c idr r3 r3 0 main src main c 50 0x0000036e adds r2 r3 1 main src main c 50 0x00000370 idr r3 pc 72 Ox3bc lt main 92 gt main src main c 50 0x00000372 str r2 r3 0 main src main c 50 0x00000374 ldr r3 r7 4 main src main c 51 Figure 15 1 The instruction trace view 15 3 2 Instruction Trace view Toolbar buttons There are several buttons in the toolbar of the Instruction Trace View that allow you to use Instruction Trace with your target Record trace continuously al Show Instruction Trace config view Download trace buffer from target Link to source Link to disassembly Toggle profile information ts Save trace to csv 5 Jump to trigger a Stop auto resume 48 Select columns to display Record trace continuously The Record trace continuously button configures the trace buffer as a circular buffer Once the trace buffer is filled up older trace data is overwritten by newer trace data This mode of operation ensures that when the target is paused the buffer will contain the most recently executed instructions Note The target must be connected with your code downloaded and execution suspended before you can configure trace LPCXpresso v7 User Guide All information provided in this document is subject to legal disclaimers 2013 2014 NXP Semiconductors All rights reserved User Guide Rev 7 4 16 September
121. mber 2014 9 NXP Semiconductors LPCXpresso v7 User Guide 2 2 3 2 2 4 LPCXpresso v7 User Guide User Guide 2 3 Note The actual location of this library may depend on the distribution and version of Linux you are running Ubuntu ed lib 1386 Linux onu sudo in sf libudev so 1 libudev so 0 Fedora cd usr lib sudo ln sf libudev so 1 libudev so 0 Ubuntu specific issues When using the Unity interface there may be an issue preventing some menu items from displaying in the LPCXpresso IDE this does not affect the Classic interface To workaround this problem create a shell script with the following content and start the LPCXpresso IDE by running this script bin bash export UBUNTU_MENUPROXY 0 usr local lt lpcxpresso_install_dir gt lpcxpresso lpcxpresso Fedora specific issues If SELINUX is used it must be set to permissive mode to allow the LPCXpresso IDE to run Mac OS X The LPCXpresso IDE installer is supplied as a Mac OS X pxg installer file Double click on the installer to install the LPCXpresso IDE into a subfolder of your Applications folder To start the LPCXpresso IDE use the Mac OS X Launchpad Alternatively click the Open Ipexpresso icon in the applications lpcxpresso_version folder or run Ipexpresso app which can be found in the ipcxpresso subfolder of the main LPCXpresso IDE installation directory within Applications Running und
122. mer3_counter 0x00002faf 2552 070s Read timer2_toggle 0x00000000 gt Value timerl_counter 0x0000146f 2552 070s Read timer3_toggle Ox00000000 0x 08x gt Value timerO_counter Ox000006cf 2552 070s Read timer3_counter 0x00002fb0 2552 527s Read timer2_counter 0x00002210 2552 710s Read timer3_counter 0x00002fb1 2552 984s Read timerl_counter 0x00001470 2553 137s Read timar enuntar AvNNNNI711 _ 2662 SNc Raad 0 0 0 0 0 0 0 0 0 0 0 n Use the Add Data Watch Items button ff to display a dialog to allow the memory locations that will be presented to be chosen as per Figure 13 2 LPCXpresso v7 User Guide All information provided in this document is subject to legal disclaimers 2013 2014 NXP Semiconductors All rights reserved User Guide Rev 7 4 16 September 2014 51 NXP Semiconductors LPCXpresso v7 User Guide Add Data Watch Items Select symbols enter a C style expression from which an address and data size may be determined or enter these values directly Y Name Type b _ g_pfnVectors const void void PeripheralClock uint32_t RTC_tick volatile unsigned long int SystemCoreClock uint32_t USBClock uint32_t Symbols Expression Address Size 32 bits Format 0x 08x _ Enable trace Value PC Address v Read Write er gt Figure 13 2 Add Data Watch Items These locations may be specified by selecting global variables from a list by entering a C expressio
123. n or by entering an address and data size directly Trace may be enabled for each new item If trace is not enabled the value of the data item will be read from memory Data watch trace works by setting an address into a register on the target chip This address is calculated at the time that you choose an item to watch in the Add Data Watch Items dialog Thus while you can use an expression such aS buffer bufIndex 4 the watched address will not be changed should buftndex subsequently change This behavior is a limitation of the hardware The format drop down box provides several format strings to choose from for displaying an items value The format string can be customized in this box as well as in the item display With trace enabled the options for tracing the item s value the PC of the instruction accessing the variable or its address can be set Additionally the option to trace reads writes or both can be set when adding a variable These settings can be subsequently updated in the item display Note It is not possible to add some kinds of variables when the target is running Suspending the execution of the target with the JU button before adding these variables will overcome this limitation Pressing Finish adds the current data watch item to the item display and returns to the data watch view Pressing Next adds the current data watch item and displays the dialog to allow another item to be added LPCXpresso v7
124. nabled by pressing the Continuous Recording button or checking enable MTB in the Instruction Trace Config view Trace will only be recorded by the MTB when it is enabled The MTB can also be enabled and disabled by two external signals rstart and tstop On the LPC8xx parts these are driven by the External trace buffer command register Disable trace in External trace buffer command register LPC_SYSCON gt EXTTRACECMD 2 Renable trace in External trace buffer command register LPC_SYSCON gt EXTTRACECMD 1 Note that if rstart and tstop are asserted at the same time tstart takes priority MTB memory configuration Both the size and the position in memory of the MTB s buffer are user configurable This flexibility allows the developer to balance the trade off between the amount of memory required by their code and the length of instruction trace that the MTB is able to capture before getting overwritten or needing to be drained Since the MTB uses the same SRAM used by global variables the heap and stack care must be taken to ensure that the target is configured so that the MTB s memory and the memory used by your code do not overlap For more information see Configuring the Cortex MO0 for instruction trace 59 in the Getting Started Guide All information provided in this document is subject to legal disclaimers 2013 2014 NXP Semiconductors All rights reserved Rev 7 4 16 September 2014 64
125. nector and analog digital and serial expansion headers making it a highly extensible platform Unlike the original LPC Link it does not contain a target MCU but is rather designed to be used with a target mounted on an external board The LPCXpresso IDE works out of the box with LPC Link 2 using Redlink firmware In addition several firmware images are available for LPC Link 2 that make it compatible with other toolchains including the popular SEGGER J Link and the CMSIS DAP debugger designed by ARM LPCXpresso v7 User Guide All information provided in this document is subject to legal disclaimers 2013 2014 NXP Semiconductors All rights reserved User Guide Rev 7 4 16 September 2014 4 NXP Semiconductors LPCXpresso v7 User Guide rettiette y TUEL Figure 1 2 LPC Link 2 Debug Probe For more information visit http www lpcware com Ipclink2 1 4 LPCXpresso V2 Boards The next generation LPCXpresso V2 boards build upon the original LPCXpresso board design providing many new and exciting features These include a new debug probe based on the standalone LPC Link2 as well as enhanced expansion capabilities hb otal ee gra DA 4 2013 U SSc LPC11U68 Xpresso v2 DX 99990000000 ooo X Y 0 OR D O2 ON Figure 1 3 LPCXpresso V2 Board LPCXpresso11U68 For more information visit http www lpcware com LPCXpressoV2Boards 1 5 LPC800 MAX Board The LPC800 MAX board provides a fl
126. ned automatically when an rsm file is loaded or when a new rsm file is created from the Wizard The perspective can be switched using the menus by going to Window gt Open Perspective or by using the perspective toolbar in the top right of the LPCXpresso IDE LPCXpresso v7 User Guide All information provided in this document is subject to legal disclaimers 2013 2014 NXP Semiconductors All rights reserved User Guide Rev 7 4 16 September 2014 82 NXP Semiconductors LPCXpresso v7 User Guide 17 4 17 5 The blinky state machine overview The blinky state machine example is based on NXP s blinky example in their FSM Designer for the State Configurable Timer documentation It toggles four outputs sequentially with the direction determined by an input signal The target should be set up with four LEDs on outputs named LeD1 LED2 LED3 and LEep4 and two inputs named pown and RESET This example uses only the low 1 counter of the SCT activating one of four outputs at a time Each time there is a counter match the output advances With four LEDs on the outputs we should observe the following sequence LED1 gt LED2 gt LED3 gt LED4 gt OFF gt LED1 gt LED2 gt If the pown input is high the direction of the sequence is reversed LED1 gt OFF gt LED4 gt LED3 gt LED2 gt LED1 gt OFF gt LED4 gt If the reset input is high all outputs are set to off When reser goes low the sequ
127. nimum number of characters to be printed and whether this should be zero padded similar to printf e Host strings providing incorrect formatting information are marked with a warning triangle within the editor An example set of Host Strings within the Host Strings Editor are shown in Figure 14 3 LPCXpresso v7 User Guide All information provided in this document is subject to legal disclaimers 2013 2014 NXP Semiconductors All rights reserved User Guide Rev 7 4 16 September 2014 56 NXP Semiconductors LPCXpresso v7 User Guide e DisplayVal will display the string msticks followed by the parameter in decimal format as specified by the s wja e LedsOn will display the string LEDs now on e LedsOff will display the string LEDs now off Tip The value of existing host strings may be edited by clicking on the message string within the editor hoststrings xml 3 Name Value Qy DisplayVal msticks w d amp LedsOn LEDs now on T LedsOff LEDs now off Figure 14 3 Populated Host Strings Editor 14 3 Building the Host Strings macros When a Host Strings file is created using the New File wizard the management of host strings for the associated project is enabled automatically A header file named hoststrings h IS generated using a Host Strings Builder as part of the project build This behavior may be enabled or disabled for any project by right clicking on the project within the Pr
128. nk N Emulator search options Search again V Remember my selection for this Launch configuration Figure 4 7 LPC Link selected For any future debug sessions the stored probe selection will be automatically used unless the probe cannot be found In Figure 4 8 the previously selected LPC Link is no longer connected LPCXpresso v7 User Guide All information provided in this document is subject to legal disclaimers 2013 2014 NXP Semiconductors All rights reserved User Guide Rev 7 4 16 September 2014 23 NXP Semiconductors LPCXpresso v7 User Guide Connect to emulator LPC Link HID LPC Link HID not found This could be because it is disconnected not powered or already in use Emulator family Name Serial number Manufacturer Emulator search options Search for LPC Link HID again Search for L enabled emulator OK Figure 4 8 LPC Link no longer connected This might have been because you had forgotten to connect the probe in which case connect it to your computer and select Search for LPC Link HID again Alternatively it might be because you now wish to use a different probe to debug this project with In this case select Search for any enabled emulator The tools will then go off and search for appropriate emulators In Figure 4 9 only a Red Probe has now been detected Connect to emulator NXP LPC8xx 1 emulator found Select the emulat
129. nlike many software packages the LPCXpresso IDE does not install or use any keys in the Windows Registry or use or modify any environment variables including PATH resulting in a very clean installation that does not interfere with anything else on your PC Should you wish All information provided in this document is subject to legal disclaimers 2013 2014 NXP Semiconductors All rights reserved Rev 7 4 16 September 2014 7 NXP Semiconductors LPCXpresso v7 User Guide 2 2 2 LPCXpresso v7 User Guide User Guide to use the command line tools a command file is provided to set up the path for the local command window Linux Due to the huge variation in capabilities of different Linux distributions LPCXpresso is only tested and supported on recent distributions of Ubuntu and Fedora The LPCXpresso IDE may work on other distributions but we cannot provide support if it does not work The installer is supplied as an executable that installs the LPCXpresso IDE components The installer requires root privileges although once it is installed no special privileges are required to run the LPCXpresso IDE The installer will request a super user password when itis started Once installation has completed we strongly recommend that your system is restarted if you do not do this then some areas of the tools may not function correctly The installer should be started from the command line but will switch to GUI mode once the sup
130. ns Typically you might want to match only a specific value written to a specific variable Data value comparators provide this facility by linking to up to two data access address comparators e Access to any address e set link 0 and link 1 to the data value comparator number e Access to one address specified in another DWT comparator e Set both link 0 and link 1 to the address match comparator number e Access to either of two addresses specified in two separate DWT comparators e Set linkO to the first address comparator id e Set link1 to the second address comparator id Tip When there are only two DWT comparators the option to link the two comparators is given as a check box Cycle Count If supported by the chip vendor the first comparator can implement comparison to the Cycle Counter The Cycle Counter is a 32 bit counter which increments on every cycle and overflows silently This event resource is true when the cycle counter is equal to the match value To use this feature choose Cycle Counter from the comparator drop down and enter the match value into the Match Value field Reference Instruction trace view From the Instruction Trace view you can configure trace for your target and download and view the captured trace Open the Instruction Trace view by clicking Window gt Show View gt Instruction Trace It should look like Figure 15 1 For trace generated by the ETM the color of the text in the instru
131. ns They can affect the timer starting or stopping it and capturing its value It can also generate interrupt requests to the processor or perform a DMA request Red State provides an intuitive interface for building SCT state machines entirely within the LPCXpresso IDE It provides easy access to the powerful features of the SCT through a simple graphical interface All the code that is necessary to configure your design on the SCT can be generated with a single click Software State Machine Red State can generate a software state machine in C from your state machine diagram You can define input and output variables and functions to call Making changes to the state machine is simple and you can regenerate all the required code with a single click avoiding the risk of introducing errors into your business logic Integrating a state machine with your project Once the state machine design is completed code can be generated from it to be included in the build Code is only generated when the process is initiated using the Generate Code command For example if code had been generated for a state machine and the state machine was subsequently altered the user would need to click on Generate Code again This document includes step by step instructions for creating and using state machines with the SCT and for running in software All information provided in this document is subject to legal disclaimers 2013 2014 NXP Semiconductors All
132. nsition If the signal you enter does not exist one with that name will be created Adding actions to a transition The action associated with a transition can be set in the State Table in a similar way to setting the signal In the Diagram Editor you can add individual action elements directly to a transition If the transition has no action already associated with it anew action will be created to contain the action elements If there is already an action associated with this state then the elements will be added to that action Note that any other transitions using that action will also have the new action elements added to them Action elements can also be removed from an action by right clicking on the transition information box and choosing delete action element Appearance of transitions Dragging the selection handles associated with a transition alters its visual appearance in the state machine Diagram Editor Selecting either the arrow representing the transition or the label associated with it will display the selection handles and highlight the arrow The arrow initially has five selection handles three larger ones and two smaller ones see Figure 20 1 Dragging the first handle onto another state will change the transition s current state 1 in Figure 20 1 Similarly dragging the last handle onto another state will change the transition s next state 4 in Figure 20 1 Dragging the middle handle will vary how much t
133. nstructions below to activate your product From within the LPCXpresso IDE 1 Go to the menu entry Help gt Activate gt Activate Pro Edition 2 Enter the Pro Edition activation code provided and press OK 3 Enter your email address and provide a password of your choosing and press OK Your product will now be activated The license type will be displayed and you will be able to use all the features of LPCXpresso with no code size limits NOTES 1 The password should be kept safe as it will be required should you wish reactivate your license for example to move your license for LPCXpresso Pro Edition from one PC to another Your email address will be used to send a reminder should you forget your password We may also send occasional emails from which you may unsubscribe 2 The first use of an activation code will also trigger an email from Softworkz our licensing system partners to the supplied email address This email is important because it offers the option to create an account to centrally manage multiple seats of LPCXpresso See http www pcware com content faq Ipcxpresso license control panel email Multi Seat Activations When you purchase LPCXpresso Pro Edition you can choose to purchase a single or multi seat license If you purchase a multi seat license then you will be provided with a single activation code that can be used to activate LPCXpresso Pro Edition on multiple machines The major benefit of a multi se
134. nt hardware ccccsseeeeeeeeeeeeeeaeaaeeees 30 5 1 7 Enable use of Romdivide library cecceeeeeeeeeeeeeeeeeeeeeeeeeeeeeeaeaaeeees 31 5 1 8 Disable Watchdog sezcescvictsssexedcesdastadees ek aA SSRA NERE ERSAAT AEAN 31 521 9 LPCI102 SP PIN resiente a va ai eenpenced te E aS 31 5 1 10 Redlib Printf Options 2 0 0 0 cccccsceeeeeeeeeeeeeaeeeeeteeeeeeeseaaaaaaneeeeeeees 31 Dele ll Projeli CEALCO 2 vadeed ies E 31 6 Memory Editor and User Loadable Flash Driver mechanism 2 ceeeeeeeeees 33 SP Fred 01960 6 10 611 0 geese ree eeter ee epee neers Perens cen ere meer Perce eres eer ce 33 6 2 Memory EdIOr sessao kR 33 6 2 1 Editing a memory configuration eesssesesseseeserrirsreresrenrrrrrereseenn ns 34 6 2 2 Restoring a memory configuration cccceceeeeeeeeeeeeeeeeeeeeeaeeaeees 37 6 2 3 Copying memory configurations eceeeeeee eee eeeeeeeeeeeeeeeeaaeaeetees 37 LPCXpresso v7 User Guide All information provided in this document is subject to legal disclaimers 2013 2014 NXP Semiconductors All rights reserved User Guide Rev 7 4 16 September 2014 ji NXP Semiconductors LPCXpresso v7 User Guide LPCXpresso v7 User Guide User Guide 6 3 User loadable flash drivers cccccceececeeeeeeeeeeeeeesaeeeeaeeesaeeeeaeeeeeeeeeaaes 38 6 4 Importing memory configurations via New Project Wizards 0068 38 Ts MUMNICOE PIO OCtS sacevia
135. o they must all be installed individually Those that are required for LPCXpresso 7 are as follows sudo apt get install libotk2 0 0 1386 libxtst6 1386 libpangox 1 0 0 21386 libpangoxft 1 0 0 1386 libidn11 i386 libglul mesa i386 All information provided in this document is subject to legal disclaimers 2013 2014 NXP Semiconductors All rights reserved Rev 7 4 16 September 2014 8 NXP Semiconductors LPCXpresso v7 User Guide LPCXpresso v7 User Guide User Guide IsoIMeWEHSHS 3 n E mE bude kiep sWoysvo IL OSA ilsleynislo 0 Sa SRKS gtk2 engines murrine i386 libnss3 1d 1386 libwebkitgtk 1 0 0 Ubuntu 13 04 or earlier Ubuntu 13 04 and earlier provides a convenient method to install 32 bit compatible libraries These can be installed using the follow command sudo apt get install linux32 ia32 libs Fedora Install the following 32 bit libraries sudo yum install gtk2 i686 glibc i686 glibc devel i686 libstdct i686 zlib devel i686 ncurses devel i686 libX11 devel i686 libXrender i686 libXrandr i686 libusb i686 libXtst i686 nss i686 libcanberra gtk2 i686 PackageKit gtk3 module i686 webkitgtk i686 Other Linux Distros While not officially supported the LPCXpresso IDE has been reported to work on many other Linux Distros including Linux Mint openSUSE and Debian When attempting to run on these Distros remember that LPCXpresso is a 32 bit application and so various 32 bit
136. o turn off the Yellow light turn on the Red light set the variable timer to zero and the variable duration to 250 The loop back holds the state machine in the yeiiow state until it has looped duration number of times Then the continue signal makes the state machine transition to the rea state Add similar transitions to move through the remaining states pausing in them for appropreate periods see Figure 18 14 timer duration state 1 action 3 CALL incTimer timer duration timer timer action 4 action 1 CALL YellowOff CALL GreenOn CALL RedOn CALL YellowOff SET timer to 0 CALL RedOff SET duration to 250 CALL WalkOff buttonPushed action 2 CALL GreenOff CALL YellowOn timer duration SET timer to 0 action 5 SET duration to 500 CALL incTimer timer duration action 8 CALL WalkOn SET duration to 250 timer duration SET timer to 0 action 10 CALL RedOff CALL GreenOn timer duration action 9 action 6 timer duration i CALL incTimer action 7 CALL WalkOff SET timer to 0 CALL incTimar SET duration to 1000 timer duration Figure 18 14 Layout of the traffic light software state machine 18 4 Integrating a state machine with existing code We now have our completed state machine Next we need to generate the C code for the state machine and hook it up to the existing code which turns LEDs on and off and handles external interrupts LPCXpresso v7 User Guide
137. o v7 User Guide User Guide Enable use of Romdivide library Certain NXP Cortex MO based MCUs such as LPC11Axx LPC11Exx LPC11Uxx and LPC12xx include optimized code in ROM to carry out divide operations This option enables the use of these Romdivide library functions For more details see the FAQ at http www pcware com content faq lpcxpresso rom divide Disable Watchdog Unlike most MCUs NXP s LPC12xx MCUs enable the watchdog timer by default at reset This option disables this default behavior For more details please see the FAQ at http www pcware com content faq Ipcxpresso lpc12 watchdog LPC1102 ISP Pin The provision of a pin to trigger entry to NXP s ISP bootloader at reset is not hardwired on the LPC1 102 unlike other NXP MCUs This option allows the generation of default code for providing an ISP pin For more information please see NXP s application note AN11015 Adding ISP to LPC1102 systems Redlib Printf options The Semihosting C Project wizard for some parts provides two options for configuring the implementation of printf family functions that will get pulled in from the Redlib C library Use non floating point version of printf e If your application does not pass floating point numbers to printf family functions you can select a non floating point variant of printf This will help to reduce the code size of your application e For MCUs where the wizard does not provide
138. oduction to using LPCXpresso with particular emphasis on the LPCXpresso IDE It assumes that you have some knowledge of MCUs and software development for embedded systems LPCXpresso IDE Overview of Features The LPCXpresso IDE is a fully featured software development environment for NXP s ARM based MCUs and includes all the tools necessary to develop high quality embedded software applications in a timely and cost effective fashion The LPCXpresso IDE is based on the Eclipse IDE and features many ease of use and MCU specific enhancements The LPCXpresso IDE also includes the industry standard ARM GNU tools enabling professional quality tools at low cost The fully featured debugger supports both SWD and JTAG debugging and features direct download to on chip flash Summary of Features e Complete C C integrated development environment e Latest Eclipse based IDE with many ease of use enhancements IDE can be further enhanced with Eclipse plugins e CVS source control built in Subversion TFS Git and others available for download Command line tools included for integration into build test and manufacturing systems e Industry standard GNU toolchain including e C and C compilers assembler and linker e Converters for SREC HEX and binary e Fully featured debugger supporting JTAG and SWD e Built in flash programming e High level and instruction level debug e Views of CPU registers and on chip peripherals All information pr
139. oject Explorer view and selecting Managed Host Strings from the pop up menu The header file contains the host string macros for use within your code 14 4 Instrumenting your code Project code may be instrumented with Host Strings by referencing the Host Strings header file using include hoststrings h Note that the above assumes that the source code for your project is located in a subdirectory immediately below the root directory of your project where the Host String files are located If your project is more complex then it may be better to add ProjDirPath to your project include paths using the menu Project gt Properties gt C C Build gt Settings gt MCU C Compiler gt Includes repeating for both Debug and Release Build variants and then simply use Hinelude hostese rings hy Host string messages may then be triggered within your code by adding calls to the pre processor macros defined within this header file For example HS_DisplayVal msticks LPCXpresso v7 User Guide All information provided in this document is subject to legal disclaimers 2013 2014 NXP Semiconductors All rights reserved User Guide Rev 7 4 16 September 2014 57 NXP Semiconductors LPCXpresso v7 User Guide 14 5 Host Strings view amp The Host Strings view presents the message associated with a host string each time the associated host string macro is called within your code The message inclu
140. on The archive contains several projects but we only require the following three The cmMsiSv2pxx_LPC18xx_DriverLib IS required to access the LPC1850 The LPC1850A_HitexA4_SCT_Base project contains the code required to set up the system control unit To use this project you must add your own state machine The LPC1850A_HitexA4_SCT_Blinky project contains the completed SCT state machine that is the result of following this tutorial To follow along with this walk through select the cmstsv2pxx_LPC18xx_DriverLib and LPC1850A_HitexA4_SCT_Base projects To work from the completed state machine select CMSISv2pxx_LPC18xx_DriverLib ANd LPCc1850A_HitexA4_SCT_Blinky The rest of this tutorial will assume that the former configuration is being used Adding a new SCT state machine to the project Now that the project is set up the next step is to add the state machine to it The state machine is described in an rsm file in the project Create the file with the Red State Machine file generator Make sure that the src folder containing the C source files in the LPC1850A_HitexA4_SCT_Base project is selected and then select New gt Other from the file menu or press the New button in the toolbar to bring up the Wizard selection dialog Type state in the filter box to find the Red State Machine file generator or just expand the Red State folder see Figure 17 1 All information provided in this document is subject to legal disclaimers 2013 2014 NXP Sem
141. on elements perform tasks like setting an output variable s state or calling a function A single action may be associated with one or more transitions A new action can be created by pressing the Add action button in the Action List typing a name into a transition s action column in the State Table or by adding action elements to a transition without an action in the Diagram Editor Once an action is created it can have elements added to it in the Action List by selecting it in the top half and then using the right click menu in the bottom half of the view In the SCT the following action elements are available e SET sets an output pin to be high e CLEAR sets an output pin to be low e TOGGLE calls a set and a clear on an output pin so pin will toggle if conflict resolution is appropriately set e CALL perform a special SCT action like starting a timer or firing an interrupt e CAPTURE capture a timer s value into the specified capture register In a software state machine you can add the following elements e SET sets an output variable to a value you enter in the value column in the bottom of the Action List e CALL call a function you defined in the Output view Action elements can be removed by selecting them and choosing remove action from the right click menu take care to ensure that the element is selected and not just the Action otherwise you may delete the entire action and all action elements associated
142. onfiguration selection Memory configurations for a variety of LPC18x0 and LPC43x0 boards can be found in the directory lt install_dir gt lpcxpresso Wizards MemConfigs NXP LPCXpresso v7 User Guide All information provided in this document is subject to legal disclaimers 2013 2014 NXP Semiconductors All rights reserved User Guide Rev 7 4 16 September 2014 39 NXP Semiconductors LPCXpresso v7 User Guide 7 Multicore projects LPCXpresso v7 User Guide User Guide The LPC48xx family of MCUs contain a Cortex M4 Master core and one or more Cortex MO Slave cores After a power on or Reset the Master core boots and is then responsible for booting the Slave core s hence the names Master and Slave In reality Master and Slave only apply to the booting process after boot your application may treat any of the cores as the Master or Slave The LPCXpresso IDE now allows for the easy creation of linked projects that support the targeting of Multicore MCUs For more information on creating and using multicore projects please see the FAQ at http www pcware com content faq Ipcxpresso lpc43xx multicore apps All information provided in this document is subject to legal disclaimers 2013 2014 NXP Semiconductors All rights reserved Rev 7 4 16 September 2014 40 NXP Semiconductors LPCXpresso v7 User Guide 8 Red Trace Overview Red Trace is the name for the technology in the LP
143. ong enough to click Cancel use the Stop auto resume button a in the instruction trace view toolbar This disables auto resume so that the target will remain halted the next time the MTB suspends it MTB Downloading Trace To obtain the instruction trace from the MTB once it has captured trace into it buffer the content of the buffer needs to be downloaded by Red Trace and decompressed There must be an active debug session for the trace to be downloaded It can be downloaded using the Download trace buffer button G in the Instruction Trace view The trace recorded by the MTB is compressed The code image is required to decompress the trace This image must be identical to the image running on the target when the trace was captured It is possible to download and decompress a trace from a previous session if the same code image is running on the target However if the trace buffer contains old trace data and a different code image is downloaded to the target downloading the buffer may result in invalid trace being displayed Embedded Trace Macrocell The Embedded Trace Macrocell ETM provides real time tracing of instructions and data By combining the ETM with an ETB some features of this powerful debugging tool are accessible using a low cost debug probe This section describes some of the key components and features of the ETM Stalling The Embedded Trace Macrocell 65 ETM uses as relatively small FIFO buffer to store formatted
144. oose maxcount from the Input context menu See Figure 17 10 In the editor use the Transition tool to create a new transition from 1_ENTRY tO LED1on Right click on the transition label and set the signal to increment Finally turn on nep1 by choosing Add Action gt SET gt LED1 Reset increment 7 And DOWN amp amp maxcount DOWN DOWN 1 maxcount maxcount Figure 17 10 A composite signal 17 8 5 17 8 6 LPCXpresso v7 User Guide User Guide Turning off Lep1 The next transition we will add is from ED1on back to L_entrv This transition should happen if we are in state LED1on and the DOWN button is pressed i e the DOWN signal is high and the counter has reached speed Add another signal and name it decrement Repeat the steps for the increment signal but leave the I O condition for DOWN as HIGH Draw the transition from Lepion to L_ENTRY and set decrement as its signal Add the action element CLEAR LED1 to turn off the LED Remaining transitions Add the remaining transitions with action elements to turn off the current LED and turn on the next one according to whether the DOWN input is HIGH or LOW Note that you can reuse your increment and decrement signals there is no need to create multiple copies of the same signal Finally we want to reset the counter every time that it reaches the value defined by speed Add a signal that fires when maxcount is high then add a loop back transition
145. or to use Emulator family Name Serial number Manufacturer Red Probe Family Red Probe A FTURZYNCA Code Red Red Probe Emulator search options Search again Remember my selection for this Launch configuration Figure 4 9 Attached probes Red Probe Notes e The Remember my selection option is enabled by default in the Debug Emulator Selection Dialog and will cause the selected probe to be stored in the launch configuration for the current configuration typically Debug or Release of the current LPCXpresso v7 User Guide All information provided in this document is subject to legal disclaimers 2013 2014 NXP Semiconductors All rights reserved User Guide Rev 7 4 16 September 2014 24 NXP Semiconductors LPCXpresso v7 User Guide project You can thus remove the probe selection at any time by simply deleting the launch configuration e You will need to select a probe for each project that you debug within a workspace as well as for each configuration within a project Storing the selected emulator probe in the debug configuration helps to improve debug startup time It is also possible to turn off support for various debug emulators which can further improve debug startup times This can be configured on a workspace basis via the menu Window gt Preferences gt LPCXpresso gt Debug Emulator Selection 4 4 2 Controlling execution When you start a debu
146. ough just 2 wires unlike 6 for JTAG SWV Red Trace Serial Wire Viewing This is an additional feature to SWD that allows the LPCXpresso IDE to give real time tracing visualization and views from Cortex M3 M4 based devices SWV is only available if SWD is being used A View is a window in the LPCXpresso IDE that shows a particular file or activity A Perspective is the layout of many Views The LPCXpresso IDE organizes groups of projects into a Workspace A workspace is stored as a directory on your host PC and has subdirectories containing individual projects LPCXpresso v7 User Guide All information provided in this document is subject to legal disclaimers 2013 2014 NXP Semiconductors All rights reserved User Guide Rev 7 4 16 September 2014 125
147. ovided in this document is subject to legal disclaimers 2013 2014 NXP Semiconductors All rights reserved Rev 7 4 16 September 2014 1 NXP Semiconductors LPCXpresso v7 User Guide e Support for multiple devices on JTAG scan chain e Library support e Redlib a small footprint embedded C library e Newlib a complete C and C library e NewlibNano a new small footprint C and C library based on Newlib e LPCOpen MCU software libraries e Cortex Microcontroller Software Interface Standard CMSIS libraries and source code e Device specific support for NXP s ARM based MCUs including Cortex M ARM7 and ARM9 based parts e Automatic generation of linker scripts for correct placement of code and data into flash and RAM e Startup code and device initialization e No assembler required with Cortex M based MCUs Red Trace 41 e Instruction trace via Embedded Trace Buffer ETB on certain Cortex M3 M4 based MCUs or Micro Trace Buffer MTB on Cortex M0 based MCUs e Plus when debugging via Red Probe on Cortex M3 M4 based MCUs Serial Wire Viewer support providing e Profile tracing e Interrupt trace and display e Datawatch trace e Red State 80 state machine designer and code generator e Graphically design your state machines e Generates standard C code e Configures NXP State Configurable Timer SCT as well as supporting software state machines 1 1 2 New functionality The following changes in functionality have been m
148. pecified in its type name with the const int input variable named in its source New const ints and Match conditions can be added in the Input view but the input pins are fixed Software state machine inputs In the software state machine the inputs can only be of type variable The C type of the variable is defined in the source column It should be noted that these variables are considered as constants that can t be directly set by the state machine Outputs Outputs are elements of the state machine that may be used in actions SCT outputs In the SCT they may have the following types e bool a binary output pin Its pin number is defined by its source name with crout_n corresponding to pin number n An initial value can be set for the output by choosing a value in the preload column e function special SCT specific calls Capture register a capture register to capture the timer indicated by its source As with the inputs most of the pre populated outputs are not editable except for their names Additional outputs can be added using the Add output button SP in the Output view These extra outputs are limited to be capture registers Or an IRQ To add another interrupt request add a new output and set its type to function and its source to IRQ e To add a capture register add a new output and set its type to capture register and choose which timer to capture When using IRQs with the SCT care must be ta
149. pose LPCXpresso v7 User Guide All information provided in this document is subject to legal disclaimers 2013 2014 NXP Semiconductors All rights reserved User Guide Rev 7 4 16 September 2014 37 NXP Semiconductors LPCXpresso v7 User Guide 6 3 User loadable flash drivers Flash drivers for external flash must have a c x file extension and must be located in the bin Flash Subdirectory of the LPCXpresso IDE installation For example e The sstT39vr3201x_Hitex_LPC1850A_4350A cfx driver is for use in programming the external 4MB parallel flash fitted to the Hitex LP1850A LPC4350A evaluation board either a SST39VF3201 or SST39VF3201B device This memory has a base address of 0x1c000000 e The 1pcis_43_SPIFI_8MB_64KB cfx driver is for use in programming external serial flash fitted to the Hitex LP1850A LPC4350A evaluation board This memory is located at a base address of 0x14000000 is 8MB in size and has 64KB sectors e The 1pcis_43_Diolan_ 29AL016J70T cfx driver is for use in programming the external 2MB parallel flash fitted to the Diolan LP1850 DB1 and LPC4350 DB1 boards This memory has a base address of 0xico00000 For a more complete list of supplied external flash drivers for the NXP LPC18 and LPC43 families please see the FAQ at http www pcware com content faq Ipcxpresso Ipc1 8 lpc43 external flash drivers Source code for external flash drivers is also provided in the Examples FlashDrivers subdirectory of
150. r 0x00000071 timer2_counter 0x0000061c timerl_counter 0x00000150 timer2_counter 0x0000022d timer2 counter 0x0000022c timer2 counter 0x0000061c timer2_counter 0x0000060e timerl_counter 0x0000014f 0 0 0 0 0 0 0 0 0 Figure 13 4 Data Watch trace display LPCXpresso v7 User Guide All information provided in this document is subject to legal disclaimers 2013 2014 NXP Semiconductors All rights reserved User Guide Rev 7 4 16 September 2014 54 NXP Semiconductors LPCXpresso v7 User Guide 14 Red Trace Host Strings ITM 14 1 Overview Host Strings use the Instrumentation Trace Macrocell ITM within the Serial Wire Viewer SWV functionality provided by Cortex M3 M4 based systems to display diagnostic messages as your code is running The overhead of using Host Strings is much lower than the traditional method of generating diagnostic messages using printf either through semihosting or retargeted to use a serial port as the intelligence for Host Strings is contained within Red Trace rather than in application code running on the target The overhead is so low that the instrumentation can remain in your target application code and the generation of the debug messages can simply be globally turned off by default in the ITM trace enable register and then turned on again when the debugger is attached giving very elegant in system diagnostic capabilities The Host Strings mechanism uses a very low
151. r View and built Note that building a single project may also trigger a build of any associated library projects 4 3 1 Build configurations By default each project will be created with two different build configurations Debug and Release Each build configuration will contain a distinct set of build options Thus a Debug build will typically compile its code with optimizations disabled o0 and Release will compile its code optimizing for minimum code size os The currently selected build configuration for a project will be displayed after its name in the Quickstart Panel s Build Clean Debug options For more information on switching between Build Configurations see the FAQ at http www lpcware com content faq Ipcxpresso change build config LPCXpresso v7 User Guide All information provided in this document is subject to legal disclaimers 2013 2014 NXP Semiconductors All rights reserved User Guide Rev 7 4 16 September 2014 20 NXP Semiconductors LPCXpresso v7 User Guide 4 4 Debugging a project This description shows how to run the LPCOpen nxp_lpcxpresso_812_periph_acmp example application for the LPCXpresso812 development board The same basic principles will apply for other examples and boards First of all you need to ensure that your LPCXpresso development board is connected to your computer using a USB 2 0 A Mini B cable Note that some LPCXpresso development boards have two USB connectors fitted
152. r e g 1337 without any quotes etc All information provided in this document is subject to legal disclaimers 2013 2014 NXP Semiconductors All rights reserved Rev 7 4 16 September 2014 119 NXP Semiconductors LPCXpresso v7 User Guide 21 Red State Limitations Red State uses NXP s SCT tool parser to generate the configuration code for the SCT NXP s documentation notes the following limitations with the parser The ultimate goal of the tool is to allow specifying every detail of a complex SCT design For the time being the following limitations are present e The SCT global configuration like the operating mode the clocks configuration has still to be specified manually within the application code All specified match and acquired capture values are relative to those global clock settings The conflict resolution register setup is not fully included in the state machine configuration The default hardware setup after reset is to take no action in case of conflicts for events trying to drive the same output at the same time e In the current implementation it is possible to choose the toggle action for those outputs which are set and cleared simultaneously at a specific point in time This is done by specifying the pin toggle attribute in the FZM drawing In case of multiple events driving the same outputs the programmer needs to manually modify the generated code to override the current settings and program th
153. ration has been applied Once the target resumes the buffer will start filling with instructions Once the buffer is filled the newest instructions will overwrite the oldest When the value oxf is written to the focal variable the trigger counter will start to count down on every word written to the buffer Once the trigger counter reaches zero no further trace will be recorded preserving earlier trace Step 10 Pause target and download the buffer After some time view the captured trace by pausing the target and downloading the content of the buffer 1 Suspend the execution of your target by selecting Run gt Suspend 2 Display the Instruction Trace view by clicking 8 Window gt Show View gt Instruction Trace 3 Download the content of the ETB by pressing G in the Instruction Trace view i Check that the trigger event occurred and was captured by the trace by clicking on co Concepts Instruction Trace Overview MTB Concepts The CoreSight Micro Trace Buffer for the MO MTB provides simple execution trace capabilities to the Cortex M0 processor It is an optional component which may or may not be provided in a particular MCU See Supported Targets 78 All information provided in this document is subject to legal disclaimers 2013 2014 NXP Semiconductors All rights reserved Rev 7 4 16 September 2014 63 NXP Semiconductors LPCXpresso v7 User Guide LPCXpresso v7 User Guide User Guide The MTB captur
154. rce files Source folder with modified build properties Source file with modified build properties Project Makefile Note that the LPCXpresso IDE may automatically generate these C language source file that has been excluded from the project build Hollowed out character in icon General text file Often used for files such as linker script files which end with the extension Id The blue double arrows at the top of the icon denote that this particular source file has different project build properties than the rest of the project The orange gold storage drive denotes that this file is connected to a CVS repository The right arrow denotes that the file or directory has been modified locally and may need committing to the CVS repository l e The local copy is more up to date than the repository 5 REARS 15A main c 1 1 ASCII kky SFE This is an executable file Directory containing executables C Project Directory Project Explorer View C Project Directory linked to a CVS repository Project Explore View 43 8 oF amp la LPCXpresso v7 User Guide All information provided in this document is subject to legal disclaimers 2013 2014 NXP Semiconductors All rights reserved User Guide Rev 7 4 16 September 2014 124 NXP Semiconductors LPCXpresso v7 User Guide 24 Appendix B Glossary of Terms Table 24 1 Explanation of the meaning of terms used in this document Meaning
155. reserved Rev 7 4 16 September 2014 113 NXP Semiconductors LPCXpresso v7 User Guide 20 2 3 20 2 4 20 2 5 20 3 20 3 1 LPCXpresso v7 User Guide User Guide H_ALWAYS L_ALways Split counter mode v_arways unified counter mode These are pseudo or virtual states which do not get mapped into a state register value for the SCT state machine It is just a graphical convenience to represent events which are state independent or in other words are considered to be valid in all defined states H_ENTRY L_ENTRY Counter split mode u_entry unified counter mode These represent the initial value of the state register the SCT will have after configuration It is a useful feature as you might want the state machine to start from a user defined condition If not specified the SCT will be left in the default configuration after reset that is start from state zero Note that the tool will map the state numbering at its convenience so use the ENTRY feature if the starting state is of relevance for your application Resizing The states can be resized in the diagram by selecting them and then dragging the handles at their corners If the full state name does not fit inside the state box it will show ellipsis at the end of the visible part of the name Deleting States can be deleted from the Diagram Editor by selecting them and then either choosing delete in the edit menu or by right clicking on them an
156. resource is true when the counter equals zero itthen reloads and continues counting down The reload value can be set in the ETM Instruction Trace config view All information provided in this document is subject to legal disclaimers 2013 2014 NXP Semiconductors All rights reserved Rev 7 4 16 September 2014 66 NXP Semiconductors LPCXpresso v7 User Guide 15 2 4 LPCXpresso v7 User Guide User Guide Trace start stop unit event resource The trace start stop block is an event resource that can combine all of the Watchpoint comparators For example you could have trace start when the target enters a function call and stop when it exits that function or use it to generate complex trigger events When a start comparator becomes true the start stop block asserts its output to high and stays high until a stop comparator becomes true The start stop block logic is reset to low when the ETM is reset Note that checking both start and stop for the same comparator will be treated as just checking start To use this method e Set the trace enable to use the start stop block e Find the entry and exit addresses for the focal function in the disassembly view e Create instruction match conditions in the DWT comparators for those address e Check the start box for the entry address and stop boxes for the exit address External event resource External input may be connected to the ETM by the silicon vendor Please see their
157. resso LPCXpresso v7 User Guide Rev 7 4 16 September 2014 User guide NXP Semiconductors LPCXpresso v7 User Guide 16 September 2014 Copyright 2013 2014 NXP Semiconductors All rights reserved LPCXpresso v7 User Guide All information provided in this document is subject to legal disclaimers 2013 2014 NXP Semiconductors All rights reserved User Guide Rev 7 4 16 September 2014 1 NXP Semiconductors LPCXpresso v7 User Guide 1 Introduction to LPCXpresso ccceceeeeeeeeeeeeeeeeeeeeeeeaaaaeeeeeeeeeeeaaaaeeneeeeeeeeeaeaaeeaes 1 1 1 LPCXpresso IDE Overview of Features ccccceeeeeeeeeeeeeaeeeeeeeeeeeeeeeaeaaee 1 1 1 1 Summary of Features ccccecccececeeeeeeeee cece ae ae E EE 1 Tie New Tunctionality siirinsesi suinn KEKEE KSS KANNE RRR ay 2 1 1 3 Supported debug probes cceeeceeeceeeeeeeeeeeeeeeeeaeaaeeeeeeeeeeeeaeaaeeaes 3 1 2 LPCXpresso Development Boards original version s 3 1 3 LPC Link 2 Debug Probe ccc ceeeeeeee cece ae eeeeeeeeeeeeeeaeaaea ae eeeeeeeeaeaaaaaeeeeees 4 1 4 LPGXpresso V2 Boards sssrinin bnina nainn aa atia aA EAA 5 1 5 LPC800 MAX Boa di ssrdsn annaia ii aa aAa ias 5 2 Installation and Licensing sssiussi ssena eNe AEE E AEEA EE 7 2 1 Host Computer Hardware Requirement ccceeeeeeeeeeeaeeaeeeeeeeeeeeeaeaaes 7 2i2 INSTAN AION ET AEE A E E E E E E E ek T 2P VIMO OWS ae a T eked eae ae T AAR LINUX
158. rights reserved Rev 7 4 16 September 2014 80 NXP Semiconductors LPCXpresso v7 User Guide 17 Red State SCT state machine tutorial 17 1 17 2 17 3 LPCXpresso v7 User Guide User Guide This section will take you through the steps required to generate a state machine in Red State for the SCT target A state machine can only be added to an existing project in the LPCXpresso IDE The first step is to import the base project to extend in this tutorial The second step is to create a new state machine and add it to the project using the Red State Wizard The final step is to use the integrated Red State graphical editor to design the state machine and generate the SCT configuration to run on the target Prerequisites This tutorial is based on the b1 inky example provided by NXP Itis intended to be run on the Hitex 1850 board using Rev A silicon This project will sequentially toggle outputs which we name tep1 to 1eD4 Note that the outputs on the Hitex board do not come connected to LEDs Connect LEDs or a logic analyzer to the outputs to observe the state machine in action Creating a new project for the SCT To get started import the SCT base project from the example projects First select Import projects from the Quickstart Panel and press the Browse button corresponding to the Project Archive edit box Next navigate to the nxp Lpc1000 LPc18xx folder and choose the file Lpc1850A_Hitex zip Now press the Next butt
159. rovide this Cortex M3 or M4 using ETB To trace the instructions that resulted in the write of the unexpected value we are going to have trace continuously enabled with the ETB acting as a circular buffer Next we will set up a trigger 68 to stop trace being written to the ETB after the value oxf gets written to the All information provided in this document is subject to legal disclaimers 2013 2014 NXP Semiconductors All rights reserved Rev 7 4 16 September 2014 61 NXP Semiconductors LPCXpresso v7 User Guide LPCXpresso v7 User Guide User Guide variable we are interested in The trigger event requires two DWT comparators One of the comparators watches for any write to the address of the variable and the other watches for the value oxf being written to any address The position of the trigger in the trace is set to capture a small amount of data after the trigger and then to stop putting data into the ETB Step 1 Start the target and show the Instruction Trace config view 1 Build and execute your code on the target 2 Suspend the execution of your target by selecting Run gt Suspend 3 Display the Instruction Trace Config view by clicking Window gt Show View gt Instruction Trace Config bi Press the refresh button Sin the Instruction Trace config view Step 2 Find the address of the variable 1 Display the Disassembly view by clicking amp Window gt Show View gt Disassembly 2 Enter the vari
160. rs 2013 2014 NXP Semiconductors All rights reserved Rev 7 4 16 September 2014 114 NXP Semiconductors LPCXpresso v7 User Guide 20 3 2 20 3 3 20 3 4 20 3 5 LPCXpresso v7 User Guide User Guide A transition can be added using the State table by entering a starting and finishing state name in the last row of the table When entering state names into the State Table you are able to select existing states from the drop down list or type a name in If the typed name does not match an existing state then a new state is created The transition is represented in the diagram as an arrow It has an information box associated with it that indicates the signal and actions associated with it Deleting transitions To delete a transition you can select either the transition s information box or part of the arrow representing the transition and choose delete from the edit menu or the right click menu You may delete a transition in the State Table view by selecting it and pressing the delete button 3 in the State Table s toolbar Adding signals to a transition Once a signal 116 has been built it can be added to a transition in the Diagram Editor by right clicking on the transition s information box and choosing the signal from the Set signal sub menu To change the signal simply set it to a different signal In the State Table view you can change or set a signal by entering its name in the signal column for that tra
161. rs 2013 2014 NXP Semiconductors All rights reserved User Guide Rev 7 4 16 September 2014 13 NXP Semiconductors LPCXpresso v7 User Guide hex dumps disassembly or memory contents Views can be opened moved docked and closed and the layout of the currently displayed Views can be saved and restored Typically the LPCXpresso IDE operates using the single Develop Perspective under which both code development and debug sessions operate as shown in Figure 3 3 This single perspective simplifies the Eclipse environment but at the cost of slightly reducing the amount of information displayed on screen Alternatively the LPCXpresso IDE can operate in a dual perspective mode such that the C C Perspective is used for developing and navigating around your code and the Debug Perspective is used when debugging your application You can manually switch between Perspectives using the Perspective icons in the top right of the LPCXpresso IDE window as per Figure 3 2 m aae Ma Debug R 6 AX Develop Figure 3 2 Perspective selection All Views in a Perspective can also be rearranged to match your specific requirements by dragging and dropping If a View is accidentally closed it can be restored by selecting it from the Window gt Show View dialog LPCXpresso v7 User Guide All information provided in this document is subject to legal disclaimers 2013 2014 NXP Semiconductors All rights reserved
162. s LPCXpresso v7 User Guide LPCXpresso v7 User Guide User Guide 20 2 Stale S eae resis cies an ra si ave ceadcan santos aigeos con fut ET O den tadaanesaeaeeeres 113 2072 Aa CHE AUING eirs iynin A teas heukeee sad EEN 113 20 2 2 NAMING ceisssiccctvevaness deed ocdvevadloaaseniaeers E e 113 2072 3 RESIZING sifezesssev occas aAA EERS AEE SAADANNE AAN 114 20 24 DESIST neremeruginan a e a a a aa a 114 20 2 5 Setting initial State eee e cece cece ae eaeeeeeeeeeeeeaeaaaaeeeeeeeeeeaaa 114 2O seh TPAMSIMOMS rere Ganwocan unease A sess comes E E 114 20 3 1 Adding transitions skessa ania eE A AA aaa EEA 114 20 3 2 Deleting transitions ssscrsserssoriariii n iR EEES 115 20 3 3 Adding signals to a transition seeeeeeeeeeeenreeerrsrsrrrrnsrrnssnnne 115 20 3 4 Adding actions to a transition seeeeeeseeeeeeerrsesrrrnsrreesrrrennns 115 20 3 5 Appearance of transitions eeeeseeseerreeesrrnenerreenerrrneernennnnnnneen 115 204 SIONS nn oer eE a aE E O ates 116 20 5 ACTIONS aranana ni aaa A AAAA A AE EEN 117 20 6 npin E E E etre cer 117 20 61 SCT INPUTS sirinati ae AAA aE AA EAER EGA 117 20 6 2 Software state machine inputs ssesseseserrsisessssrrrrrrrrssesrsrrnne 118 20 72 OULDUNS aeiia iseanan iian aaae a aA aE EA 118 20 7 eh SOT OUTPUTS aiaa A E S 118 20 7 2 Software state machine outputs eseeseseieseseeessrrrrrrrresesrerrnne 119 20 723 Preset VAIUCS monica n a a 119 21 Red S
163. s in some cases provide libraries based on early versions of the CMSIS specification with names such as cmstsvip30_ lt partfamily gt but these are not recommended for use in new projects The CMSIS library option within the LPCXpresso IDE allows you to select which if any CMSIS CORE library you want to link to from the project that you are creating Note that you will need to import the appropriate CMSIS CORE library project into the workspace before the wizard will allow you to continue For more information on CMSIS and its support in the LPCXpresso IDE please see the FAQ at http www lpcware com content faq Ipcxpresso cmsis support Note the use of LPCOpen instead of CMSIS CORE library projects is recommended in most cases for new projects In fact LPCOpen actually builds on top of many aspects of CMSIS CORE For more details see Software drivers and examples 17 CMSIS DSP library selection ARM s Cortex Microcontroller Software Interface Standard or CMSIS specification also provides a definition and implementation of a DSP library The LPCXpresso IDE provides prebuilt library projects for the CMSIS DSP library for Cortex M0 M0 Cortex M3 and Cortex M4 parts though a source version of it is also provided within the LPCXpresso IDE Examples Note The CMSIS DSP library can be used with both LPCOpen and non LPCOpen projects Peripheral Driver selection For some parts one or more peripheral driver library projects may
164. s split two initial states named t_entry and _ENTRy will be added These names correspond to the low and high state machines respectively include ALWAYS state If checked a special virtual state is added to the state machine This is in fact independent of the SCT s state and allows global or state independent events to be triggered and represented in the state editor Main file This is the name of the intermediary file that will be generated from the state diagram It will be generated relative to the folder that the state machine is saved in All information provided in this document is subject to legal disclaimers 2013 2014 NXP Semiconductors All rights reserved Rev 7 4 16 September 2014 109 NXP Semiconductors LPCXpresso v7 User Guide a Name Target Main file New State Machine State Machine initial settings Choose a name for the state machine Select target for state machine V include initial state V unified timer myStateMachine NXP State Configurable Timer SCT V include ALWAYS state myStateMachine smd Figure 19 1 The New State Machine Wizard settings for the SCT 19 2 Software State Machine Wizard options When Software State Machine is chosen from the Target drop down you can configure the following options LPCXpresso v7 User Guide Name a descriptor Target choose between and SCT state machine and a software state machine include initial s
165. sets 8 223 Ma0 OS X sarera A T 10 2 2 4 Running under virtual machines cece eee eenee cece ee eeeeeeaaeeeeeeaaeeees 10 2 3 LICENSING OVEIVIEW ccceeeeece ce eeeeeeteeeeeeeeeaeaaeaeeeeeeeeeeeaaaaeeeeeeeeeeeaeaaeaees 10 2 3 1 Users of earlier versions of LPCXpresso IDE n se 11 2 3 2 Users of Code Red Technologies Red Suite products 06 11 2 4 Unregistered UNREGISTERED license 0 ccceeeeeeeeeeeeeeeeeeeeeaeaaeeees 11 2 5 Activating your product LPCXpresso Free Edition cccceeeeeeeneeeeeees 11 2 6 Activating your product LPCXpresso Pro Edition 0 0 c ceeeeeeeeeneeeeeees 12 2 6 1 Multi Seat Activations 0ccceceeeceeeceeeeeeeeeeeeeeeeaaeaeeeeeeeeeeeeaeaaeaees 12 2 7 Further information on installation and licensing cceeeeeeeeeeeeaeeeeeees 12 3 LPCXpresso IDE Overview cccececeeeeeeneeeeeeee eect aeaaceeeeeeeeeeeaeaaeaeeeeeeeeeaeaaeaeeeees 13 3 1 Documentation and Help ccccecceeeeeeee eter ikana DR E 13 Bie WOIKS DACOS a ane teutenewoeahs aavocdycauetesaeessecanenseteabvaeencatvabetcaatemouie 13 3 3 Perspectives and VICWS cececccceeeeceeeeeeeeeeeeeeeeeeeaeeeeeeeaaeeeeeeaaeeeeeeneeeees 13 3 4 Major components of the Develop Perspective cccceeeeeeeneeeeeeeaeeeeeeeee 15 4 Importing and Debugging example projects ce eceeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeees 17 4 1 Software driv
166. signal was selected in the Wizard then there will also be a signal called reset in the Signals View When the RESET signal is detected the current state of the state machine transitions to the initial state and all outputs are set to their preset values The initial state and the RESET signal are defined in the State Machine Settings view that is the tab behind the State Table by default see Figure 18 9 C State Table Property Value Name ledState Initial State state 1 Main Header file ledState h Dispatch Function ledState_dispatch Action C file ledState_a Reset Signal RESET 4 Main output file ledState c Action Header ledState_actions h Figure 18 9 Setting the initial state and the reset signals in the State Machine Setting panel 18 3 6 Adding a transition From the initial state the state machine will transition to the Green state and call the appropriate light functions to set just the green light to be on Add a transition from state 1 to the Green state by choosing the Transition tool click on state 1 and then on the creen state see Figure 18 10 LPCXpresso v7 User Guide All information provided in this document is subject to legal disclaimers 2013 2014 NXP Semiconductors All rights reserved User Guide Rev 7 4 16 September 2014 100 NXP Semiconductors LPCXpresso v7 User Guide l Select State Transition no signal no action Select ate ansition Figure 18 10 Ad
167. t Create Serial number and register Free Edition e Your product s serial number will be displayed e Write down the serial number or copy it into the clipboard 2 Press OK and a web browser will be opened on the Activations page e If you are already logged in to the website the serial number will be completed for you e If you are not logged in you will need to login navigate to http Avww l pcware com lpcxpresso activate and enter the product s serial number 3 Press the button to Register LPCXpresso e Your LPCXpresso Activation code will be generated and displayed 4 Go to the menu entry Help gt Activate gt Activate Free Edition 5 Enter your activation code and Press OK All information provided in this document is subject to legal disclaimers 2013 2014 NXP Semiconductors All rights reserved Rev 7 4 16 September 2014 11 NXP Semiconductors LPCXpresso v7 User Guide 2 6 2 6 1 LPCXpresso v7 User Guide User Guide 2 7 e This activates your product The license type will be displayed and you will be able to use all the features of LPCXpresso with a debug download limit of 256KB Activating your product LPCXpresso Pro Edition A full unrestricted activation code for the LPCXpresso IDE can be purchased via the menu entry Help gt Activate gt Purchase from LPCXpresso webstore Once purchased your activation code will be emailed to you When the activation code is received follow the i
168. t cancel In that case you should press the Stop auto resume button ai Both of these methods will turn off the auto resume feature and the target will suspend without restarting the next time the watermark matches Selecting stop trace collection on match allows the MTB to stop recording trace once it has been filled once without interrupting the execution of the target This feature could be useful when used in conjunction with a DWT comparator that starts trace on a certain condition Viewing the state of the MTB The state of the target is read each time the refresh button Sin the Instruction Trace Config view For example the the Enable MTB box will show whether or not the MTB is currently enabled This information can be useful for confirming that rstart and rstop signals are affecting the MTB as expected when using the target s external trace buffer command register exTTRACECMD Pressing the Apply button wil update the MTB s configuration even if no settings are changed by the user This action will have the effect of clearing the content of the MTB s buffer That is if the MTB contains trace that has not been downloaded and then the user applies the configuration the content of the buffer will be lost Instruction Trace Config view for the ETB Instruction trace with the ETB and ETM can be fully configured using the Instruction Trace Config view Open the Instruction Trace view by clicking Window gt Show View gt
169. t file The main output file s name is listed in the State Machine Setting view This header file contains declarations for the enum rs_state WO structs inpinputSignal and redstateOutput as well as several function declarations In this step we need to refactor the name of the enum rs_state as well as the names representing the different states sta_state_1 for example By using the the built in refactoring tools we can update all references to the elements we want to change in one go Warning The refactoring tool may attempt to apply the refactoring to all global elements in your workspace that match the signature of the element being refactored Use the refactoring preview option CTRL ENTER to ensure that the refactoring is only applied to the correct projects All information provided in this document is subject to legal disclaimers 2013 2014 NXP Semiconductors All rights reserved Rev 7 4 16 September 2014 121 NXP Semiconductors LPCXpresso v7 User Guide LPCXpresso v7 User Guide User Guide e The enum rs_state needs to be renamed to mysm_state 1 Highlight the text rs_state in the main output header file 2 Choose the menu item Refactor gt Rename 3 Enter the new name mysm_state 4 Press CTRL ENTER to see the refactor preview and apply the change to the current project e For each element of the enum mysm_state rename their prefix from sta_ to s_ using the same refactoring tool For example sta_sta
170. tate LIMtAONS senesindeki aiiken NNa ENR KK ENEAK AANER NEARNE RS 120 22 Red State Frequently Asked Questions ccceceeceeeeeeeeeeeeeeaeaeeeeeeeeeeeeeaeaaea 121 22 1 How do migrate from a Red State project created in Red Suite LPCXpresso v4 to one created in this version 0 ccceceeeeeeeeeeeeeeeeeeeaeaaeeees 121 23 Appendix A File ICONS siae EAEE 124 24 Appendix B Glossary Of Terms cccceeeceeeeeeeeeeeeeeeeeaeaaeaeeeeeeeeeeseaaeaeeeeeeees 125 All information provided in this document is subject to legal disclaimers 2013 2014 NXP Semiconductors All rights reserved Rev 7 4 16 September 2014 v NXP Semiconductors LPCXpresso v7 User Guide 1 Introduction to LPCXpresso 1 1 LPCXpresso v7 User Guide User Guide LPCXpresso is a low cost microcontroller MCU development platform ecosystem from NXP which provides an end to end solution enabling embedded engineers to develop their applications from initial evaluation to final production The LPCXpresso platform ecosystem includes e The LPCXpresso IDE a software development environment for creating applications for NXP s ARM based LPC range of MCUs e The range of LPCXpresso development boards which each include a built in LPC Link or LPC Link2 debug probe These boards are developed in collaboration with Embedded Artists e The standalone LPC Link 2 debug probe This guide is intended as an intr
171. tate if checked a state will be automatically include as set as the initial state include RESET signal if checked a signal will be automatically included in the new state machine and set as the RESET signal The RESET signal is a special signal which sets the state to the initial state and resets any output whenever it is fired regardless of the state machine s current state Main file what to call the main C file which will be generated by the plug in It contains the logic of the state machine A corresponding header file is also created Action c file The state machine may call functions These functions have to be in the action c file The plug in automatically generates the prototypes in the header file and can optionally generate a template for the function bodies All information provided in this document is subject to legal disclaimers 2013 2014 NXP Semiconductors All rights reserved User Guide Rev 7 4 16 September 2014 110 NXP Semiconductors LPCXpresso v7 User Guide e Dispatch function name this is the name of the function that processes the logic of the state machine Its inputs are passed to it in a special struct defined in the main file s header e Prefix a prefix used for naming key data structures and functions to ensure that there are no conflict between other state machines New State Machine State Machine initial settings Choose a name for the state machine Name myStateMachine Sele
172. tched address e Data Write only true if a value is written to the matched address Like instruction address comparators data access address comparators can operate on a range of addresses Note These comparators do not consider the value being written or read they only consider the address that is being read from or written to Data Value comparator Data value comparators are triggered when a specified value is written or read regardless of the address of the access This comparator is typically implemented on one of the Watchpoint comparators on Cortex chips There are three types of this comparator e Data Value R W true when a value is read or written that is equal to the Match Value e Data Value Read only true if a value is read that is equal to the Match Value e Data Value Write only true if a value is written that is equal to the Match Value The size of the value to be match must be configured as either a word half word or byte in the Data size drop down Only the lowest order bits up to the request size will be matched All information provided in this document is subject to legal disclaimers 2013 2014 NXP Semiconductors All rights reserved Rev 7 4 16 September 2014 70 NXP Semiconductors LPCXpresso v7 User Guide 15 3 15 3 1 LPCXpresso v7 User Guide User Guide For example if the Data size is set to byte only the lowest order byte of the match value will be used in the compariso
173. terrupt Trace view lists the interrupt service routines in the application being debugged as per Figure 12 4 LPCXpresso v7 User Guide All information provided in this document is subject to legal disclaimers 2013 2014 NXP Semiconductors All rights reserved User Guide Rev 7 4 16 September 2014 49 NXP Semiconductors LPCXpresso v7 User Guide 122 1024 Events AR i A gt Irg4 TIMER3_IRQHandle A gt Irq3 TIMER2_IRQHandle lt J gt Irq2 TIMER1_IRQHandle lt gt Irqi TIMERO_IRQHandle lt gt Main ResetISR Figure 12 4 Interrupt handlers The arrows to the left of the names of the service routines allow you to move the centre of the waveform display to the next transition on that event This is particularly useful with sparse events All information provided in this document is subject to legal disclaimers 2013 2014 NXP Semiconductors All rights reserved Rev 7 4 16 September 2014 LPCXpresso v7 User Guide User Guide NXP Semiconductors LPCXpresso v7 User Guide 13 Red Trace Data Watch Trace 13 1 Overview This view provides the ability to monitor and update any memory location in real time without stopping the processor In addition up to 4 memory locations can also be traced allowing all access to be captured Information that can be collected includes whether data is read or written the value that is accessed and the PC of the instruction causing the access This information can be
174. tex M3 M4 based MCU connected via a supported debug probe You may start Red Trace at any time whilst debugging your program The program does not have to be stopped at a breakpoint Before the collection of data commences Red Trace will prompt for settings related to your target processor as per Figure 10 1 Configure Red Trace Ensure system clock is initialised before configuring Red Trace Configuration changes will stop data collection Target clock speed Hz Luteo Sample rate Hz 0 Auto detect Workspace Preferences Figure 10 1 Configure Red Trace 10 1 1 Target Clock Speed LPCXpresso v7 User Guide User Guide Due to the way the Trace data is transferred by the target processor setting the correct clock speed within the Red Trace interface is essential to determine the correct baud rate for the data transfer If the clock speed setting does not match the actual clock speed of the processor data will be lost and the trace data will be meaningless Depending upon the target MCU and the debug probe being used the Detect button may be able to detect the current clock speed of the target processor But in other systems you may need to input the clock speed manually Since the Detect button will obtain the current clock speed from the target care needs to be taken to ensure that it is used after the application has set the clock speed for normal operation otherwise it may provide an inappropriate val
175. the LPCXpresso IDE installation Note that the bin Flash subdirectory may also contain some drivers for the built in flash on some MCUs It should be clear from the filenames which these are Do not try to use these drivers for external flash on other MCUs For more details of the user loadable flash driver mechanism please see the FAQ at http Ipcware com content faq lpcxpresso user loadable flash drivers 6 4 Importing memory configurations via New Project Wizards The New Project Wizards for LPC18xx and LPC43xx parts allow a memory configuration file as exported from the Memory Configuration Editor as detailed in Editing a memory configuration 34 to be imported at the time of creating a project LPCXpresso v7 User Guide All information provided in this document is subject to legal disclaimers 2013 2014 NXP Semiconductors All rights reserved User Guide Rev 7 4 16 September 2014 38 NXP Semiconductors LPCXpresso v7 User Guide New project Memory Config options External memory configuration External memory configuration file Browse Optionally allows an existing memory configuration file to be selected This allows for the details of external flash to be defined or for the layout of internal RAM to be reconfigured In addition it allows a flash driver to be allocated for use with parts with no internal flash but where an external flash part is connected Figure 6 5 External Memory c
176. the type as variable and the source as int Enter o the numeral zero in the preload column for both variables The variables will be initialized to these preload values when the state machine is reset Name Type preload timer variable 0 duration variable 0 GreenOn function GreenOff function YellowOn function YellowOft function RedOn function Red Ott function WalkOn function WalkOft function Figure 18 8 Added outputs for the Software State Machine Next create the functions Each light needs two functions one to turn it on and one to turn it off Edit the next row of the output panel to set the name to Greenon and the type to function The source column is ignored for functions Make the rest of the outputs into functions for turning on and off the different lights see Figure 18 8 18 3 5 The Initial State and the Reset signal After a reset the state machine enters the initial state named state 1 The software state machine requires that the initial state and a reset signal be defined If you selected include LPCXpresso v7 User Guide All information provided in this document is subject to legal disclaimers 2013 2014 NXP Semiconductors All rights reserved User Guide Rev 7 4 16 September 2014 99 NXP Semiconductors LPCXpresso v7 User Guide initial state in the Wizard there will be a state called state 1 already in the diagram The state machine will be initialized this is the state on reset If include RESET
177. therwise by default they are generated every ox400 cycles It is therefore necessary to make sure that you allow some trace data to be collected before your specific area of interest when using the trigger mechanism so that this synchronization information is included Trace around As the trigger position slider is moved to the right the words after trigger value decreases This means that the data will stop getting written to the ETB sooner Since the Trace Enable event was Set to true there will be older packets from before the trigger event still stored in the ETB The resulting instruction trace will include some instruction from before the trigger and some from after the trigger Use the slider to balance the amount of trace before and after the trigger Trace before With the trigger position slider towards the far right the instruction trace will focus on the trace before the trigger event Note that only trace captured after the instruction trace has been configured will be captured For example pausing the target and setting a trigger All information provided in this document is subject to legal disclaimers 2013 2014 NXP Semiconductors All rights reserved Rev 7 4 16 September 2014 68 NXP Semiconductors LPCXpresso v7 User Guide 15 2 5 LPCXpresso v7 User Guide User Guide condition for the next instruction with the trace position set to the far right would not be able to include instruction trace from befor
178. this option you can cause the same effect by adding the symbol cR_INTEGER_PRINTF to the project properties e Use character rather than string based printf e By default printf and puts make use of malloc to provide a temporary buffer on the heap in order to generate the string to be displayed Enable this option to switch to using character by character versions of these functions which do not require additional heap space This can be useful for example if you are retargeting printf to write out over a UART since in this case it is pointless creating a temporary buffer to store the whole string only to then print it out over the UART one character at a time e For MCUs where the wizard does not provide this option you can cause the same effect by adding the symbol cr_printr_cuar to the project properties Note that if you only require the display of fixed strings then using puts rather than printf will noticeably reduce the code size of your application Project created Having selected the appropriate options you can then click on the Finish button and the wizard will create your project for you together with appropriate startup code and a simple main c file Build options for the project will be configured appropriately for the MCU that you selected in the project wizard All information provided in this document is subject to legal disclaimers 2013 2014 NXP Semiconductors All rights reserved Rev 7
179. tions use the same prefix used elsewhere For example act_Greenon would become mysmM_Greenon Use the refactoring tool to rename the act_ fuctions in the _actions n file replacing the act_ prefix with your new prefix e g smus_ Step 7 Generate code in the current version of LPCXpresso IDE These refactoring should now have made your existing code compatable with the Red State code generated in this version of LPCXpresso IDE The final step is to generate the state machine code This code generation can be perfomred by right clicking in the State All information provided in this document is subject to legal disclaimers 2013 2014 NXP Semiconductors All rights reserved Rev 7 4 16 September 2014 122 NXP Semiconductors LPCXpresso v7 User Guide machine diagram editor and choosing Generate code or by pressing the Generate code button in the State Table view Review the generated files to ensure that the new names match those you manually refactored to LPCXpresso v7 User Guide All information provided in this document is subject to legal disclaimers 2013 2014 NXP Semiconductors All rights reserved User Guide Rev 7 4 16 September 2014 123 NXP Semiconductors LPCXpresso v7 User Guide 23 Appendix A File Icons Table 23 1 File Icons Icon Meaning ic C language source file C language header file Source folder generally use for source files including headers Folder use for none sou
180. ts misiva iaaa aaia 63 15 2 3 Embedded Trace Macrocell cccccseeceeeeeeceeeaaeeeeeeaaeeeeeeaaenees 65 15 2 4 Embedded Trace Buffer ccccecceeeece cece ee eeeeeeeesaeeeeaeeeeeeeeeaa 67 15 2 5 Data Watchpoint and Trace 0 ieee eeeeeenneeeeeeaaeeeeeeaaeeeeeeaaeeeees 69 15 3 Reference waste vaeceibeHaliastanteearteeb a a ceastanceinstviabcsavanaeleneeeeeeasvanaes 71 15 3 1 Instruction trace VIEW cceceeeeeeeceeeee eee ee eeee ae eeeeeeesaeeeeaeeeeaeeeeas 71 15 3 2 Instruction Trace view Toolbar buttons ec eeeeeeeeteeeeeeeeeeeeees 72 15 3 3 Instruction Trace Config view for the MTB n se 75 15 3 4 Instruction Trace Config view for the ETB aeee 76 15 3 5 Supported targets 0 ccccceeeeeeeceeeeeeeeeeeeeeeaaeaeeeeeeeeeeeeaaaaeeneesereees 78 15 4 Troubleshooting i c 2c 2 ccicheiel cic ei nedeieein a aai a 78 1541 Genaral necces era R EEE AEREN E EENE NA EEr EES 78 All information provided in this document is subject to legal disclaimers 2013 2014 NXP Semiconductors All rights reserved Rev 7 4 16 September 2014 jii NXP Semiconductors LPCXpresso v7 User Guide 154 2 MI Bam aana R e EO E RE O 79 154 3 ETB prerii a a a a a aa a A a a 79 16 Red State Overview ccc ccececcee cece a E E A TE 80 16 1 The NXP State Configurable Timer c ccccceeeeeceeeeeeeeeaaeeeeeeeeeeeeeeaes 80 16 2 Software State Machine ccc cece eeceeeeeee ee
181. tz_1 would become s_statTE_1 e Note that this step is not required if you do not use the state enum directly in the code you have written that is you do not use the getstate function These names are updated any time the code is generated Step 3 Refactor the input and output structs The input and output struct in the main output header file generated in Red Suite 4 have prefixes such as i_ on inputs and v_ on outputs These have been removed in subsequent versions of LPCXpresso IDE Use the rename refactoring tool as before to remove these prefixes from your code for example i_reset would become reset and v_timer would become timer Step 4 Refactor the input and output typedef Use the refactoring tool as before to rename the following e Rename the typeaef for the input from inputsignal tO mySM_inputs Rename the typedef for the output from redStateOutput tO mySM_outputs Step 5 Refactor the preload function and the getter functions Use the refactoring tool as before to rename the following functions e Rename the preload function from preload tO mySM_preload Rename the function getState tO mySM_getState Rename the function getInput tO mySM_getInput Rename the function getoutput tO mySM_getoutput Step 6 Refactor the action function names In Red Suite LPCXpresso v4 the function names in the _action h and _action c files were prefixed with act_ In the current version of LPCXpresso IDE these func
182. ubject to legal disclaimers 2013 2014 NXP Semiconductors All rights reserved User Guide Rev 7 4 16 September 2014 16 NXP Semiconductors LPCXpresso v7 User Guide 4 Importing and Debugging example projects 4 1 4 2 LPCXpresso v7 User Guide User Guide Software drivers and examples LPCOpen is now the preferred software platform for most NXP Cortex M based MCUs replacing the various CMSIS Peripheral Driver Library code bundle software packages made available in the past LPCOpen has been designed to allow you to quickly and easily utilize an extensive array of software drivers and libraries in order to create and develop multifunctional products Amongst the features of LPCOpen are e MCU peripheral device drivers with meaningful examples e Common APIs across device families e Thoroughly tested and maintained e Commonly needed third party and open source software ports e Support for Keil IAR and LPCXpresso toolchains The latest LPCOpen v2 now available provides e MCU family specific download package e Support for USB ROM drivers e Improved code organization and drivers efficiency features e Improved support for LPCXpresso IDE CMSIS Peripheral Driver Library code bundle software packages are still available both within your LPCXpresso IDE install directory lpcxpresso Examples NXP and also downloadable from NXP LPCware website But generally these should only be used for existing development work W
183. ue Clock set up code may be executed by the startup code run before the breakpoint at the start of main is hit For example in NXP projects which use CMSIS Cortex Microcontroller Software Interface Standard this will be done by the startup code calling the SystemlInit function However in some projects clock setup may be done within the main function itself Note i The core frequency must be lower than 80 MHz to use the SWD functionality required by Red Trace on the NXP LPC1850 and LPC4300 targets All information provided in this document is subject to legal disclaimers 2013 2014 NXP Semiconductors All rights reserved Rev 7 4 16 September 2014 44 NXP Semiconductors LPCXpresso v7 User Guide 10 1 2 10 2 10 3 10 4 10 5 10 6 LPCXpresso v7 User Guide User Guide Sample rate This is the frequency of data collection sampling from the target You can normally leave this set to the default Auto detect which will provide a sample rate of approximately 50kHz depending on the target clock speed Available sample rates are calculated from the clock speed and can be seen in the dropdown Start Trace Once you are debugging your application press the Start Trace button to begin the collection of trace data and enable the updating refresh of the view at regular intervals Once trace has been started updates of the view may be paused by pressing the button again now reading Stop Trace Collect
184. ume that you are working from an existing project with a software state machine generated by Red State under Red Suite 4 We will use the refactoring tools to update the old code This refactoring should be done before regenerating the state machine code in the LPCXpresso IDE This procedure is only required once and is designed to ensure that any code you have written that interacts with the state machine uses the new naming scheme Once these steps have been completed your existing project will be compatable with Red State in newer versions of LPCXpresso Be sure to back up your code before applying these refactorings Note Red State projects created using Red Suite LPCXpresso after v4 do not need to be converted in this manner Step 1 Choose a new prefix Choose a short prefix to use for your state machine This prefix will be applied to various variables and functions Any two statemachines with the same prefix may conflict with each other A prefix can be blank If the prefix is not blank an underscore character will be appended to it For example if the prefix mysm was chosen the enum containing the state ids would be named mysm_state If a blank prefix was chosen the same generated enum would be named state Note In this refactoring guide we will assume a prefix named mysm was used You may choose to use a different prefix Step 2 Refactoring the state data structures Open the header file corresponding to the main outpu
185. ument is subject to legal disclaimers 2013 2014 NXP Semiconductors All rights reserved User Guide Rev 7 4 16 September 2014 25 NXP Semiconductors LPCXpresso v7 User Guide LPCXpresso v7 User Guide to the global toolbar allows the Debug View to be minimized when not needed allowing more space on screen for other views to be displayed You can choose to display the debug controls in the Debug View by selecting the Show Debug Toolbar option in the Debug View s View Menu the downward facing triangle on the top right of the view Setting a breakpoint To set a breakpoint simply double click on the margin area of the line you wish to set a breakpoint on before the line number Restart application If you hit a breakpoint or pause execution and want to restart execution of the application from the beginning again you can do this using the Restart button Stopping debugging To stop debugging just press the Stop button If you are debugging using the Debug Perspective then to switch back to C C Perspective when you stop your debug session just click on the C C tab in the upper right area of the LPCXpresso IDE as shown in Figure 3 2 All information provided in this document is subject to legal disclaimers 2013 2014 NXP Semiconductors All rights reserved User Guide Rev 7 4 16 September 2014 26 NXP Semiconductors LPCXpresso v7 User Guide 5 Creating Projects using the Wizards 5 1
186. upt 0 for RDB1768 ISP button EINTO init In the einto c file replace the include leds h with include ledstate h Declare input as an extern global with the following line extern pf_inputs input Replace the call to 1eds_invert from the EINTO_IRQHand1er in the einto c file with input buttonPushed 1 Now when the ISP button on the board is pressed the butt onPushea input will be set to 1 Finally we need to have it reset to o after the dispatch function has processed the event This reset is accomplished by setting the butt onPushed input to o after the dispatch function is called Place the following line after the call to 1eastate_dispatch in the while loop in the main function input buttonPushed 0 clear button push All information provided in this document is subject to legal disclaimers 2013 2014 NXP Semiconductors All rights reserved Rev 7 4 16 September 2014 107 NXP Semiconductors LPCXpresso v7 User Guide 18 4 6 Running on the target Now the traffic lights are ready to be deployed to the target Switch to the C C perspective and choose Debug RDB1768 from the Quickstart Panel The LED beside the LCD will light up when this example is running on the RDB1768 board Pressing the button labeled ISP between the Ethernet socket and the LCD makes the LEDs change in the traffic light sequence see Figure 18 15 aA w a d Figure 18 15 The LEDs on th
187. used to help identify rogue memory accesses monitor and analyze memory accesses or to profile data accesses Real time memory access is also available allowing any memory location to be read or written without stopping the processor This can be useful in real time applications where stopping the processor is not possible but you wish to view or modify in memory parameters Any number of memory locations may be accessed in this way and modified by simply typing a new value into a cell in the Data Watch Trace view Warning Data Watch Trace and Instruction Trace 41 cannot be used simultaneously as they both require use of the DWT unit 13 2 Data Watch view The view is split into 2 sections with the item display on the left and the trace display on the right as per Figure 13 1 Console 4 Tasks Profile amp Data Watch X D Int Statistic ii Int Trace Host Strings Problems Executables Q Memory E Stop trace R amp gt a Enable Trace Value Format Type Access Item Value x ime Access Repeat M timerO_counter Ox 08x gt gt timer2_counter 0x0000220d 2550 790s Read 0 M timer1_counter timerl_counter 0x0000146e 2551 003s Read M timer2_counter gt gt timer3_counter Ox00002fad 2551 156s Read M timer3_counter gt gt timer2_counter 0x0000220e 2551 430s Read L timerO_toggle 0x00000000 gt Value timer3_counter Ox00002fae 2551 613s Read _ timerl_toggle 0x00000000 gt Value ti
188. view see Figure 17 9 The state machine transitions to the state defined by the transition with the highest priority when the signals for multiple transitions from the current state are satisfied simultaneously Note that the SCT performs all actions associated with each satisfied transition Next State Signal Priority 100 LEDlon increment L_ENTRY decrement LEDZon increment LED3on increment a Generate Code Figure 17 9 Setting the priority of a transition 17 8 4 Turning on tep1 The next transition we ll add will be from L_ENTRY tO LED1on It occurs when the counter reaches speed i e when maxcount is high and when the DOWN button is not pressed When this transition occurs we turn on LED1 LPCXpresso v7 User Guide All information provided in this document is subject to legal disclaimers 2013 2014 NXP Semiconductors All rights reserved User Guide Rev 7 4 16 September 2014 89 NXP Semiconductors LPCXpresso v7 User Guide To build this transition start by adding a new signal in the Signals panel and name it increment Since we want to combine two inputs right click on increment and choose Add AND You ll notice that there are two none elements now in the bottom half of the signals view Right click on one of these and choose DOWN from the Input menu Right click on DOWN again and change its I O condition from HIGH to LOW in the I O condition context menu Now right click on the other element and ch
189. with it Action elements may be added or removed from transitions in the Diagram Editor by selecting the transition information box and using the right click menu Inputs Inputs are read only elements that are used in signals In the SCT these inputs are mostly predefined and correspond to the pins used by the SCT In a software state machine you are free to define inputs of any type The names of the inputs can be freely set with the usual requirement of uniqueness Any items in the input view that are written in blue are not user editable items They are not editable in order to enforce limitations of the state machine In the SCT for example you may change the name associated with input pin 3 but you can t change its source or type nor can you delete it from the inputs SCT inputs Inputs for the SCT have the following types All information provided in this document is subject to legal disclaimers 2013 2014 NXP Semiconductors All rights reserved Rev 7 4 16 September 2014 117 NXP Semiconductors LPCXpresso v7 User Guide 20 6 2 20 7 20 7 1 LPCXpresso v7 User Guide User Guide e bool a binary input from a pin The pin numbers are defined in the source and are named CTIN_n where n is the pin number const int a constant integer to be used in match conditions its source is the integer value it is to be set to e Match Low or High or Unified a match condition which compares the timer s
190. xpresso_812_periph_bod nxp_lpcxpresso_812_periph_bod V nxp_lpexpresso_812_periph_clkout nxp_lpcxpresso_812_periph_clkout V nxp_lpcxpresso_812_periph_crc nxp_lpcxpresso_812_periph_crc V nxp_lpexpresso_812_periph_i2c_rom nxp_lpcxpresso_812_periph_i2c_rom nxp_lpcxpresso_812_periph_i2c_rom_slave nxp_lpcxpresso_812_periph_i2c_rom_slave V nxp_lpexpresso_812_periph_mrt nxp_lpcxpresso_812_periph_mrt F nxp_lpcxpresso_812_periph_pinint nxp_lpcxpresso_812_periph_pinint Options Search for nested projects Copy projects into workspace Cancel Figure 4 3 Select projects to import Select the projects you want to import and then click Finish The examples will be imported into your workspace Note that generally it is a good idea to leave all projects selected when doing an import from a zip archive file of examples This is certainly true the first time you import an example set when you will not necessarily be aware of any dependencies between projects In most cases an archive of projects will contain one or more library projects which are used by the actual application projects within the examples If you do not import these library projects then the application projects will fail to build 4 3 Building projects Building the projects in a workspace is a simple case of using the Quickstart Panel to Build all projects Alternatively a single project can be selected in the Project Explore
191. xx parts Note instruction trace is not supported on Cortex MO based parts Instruction trace is supported when using any supported debug probe including LPC Link LPC Link2 and Red Probe LPCXpresso v7 User Guide All information provided in this document is subject to legal disclaimers 2013 2014 NXP Semiconductors All rights reserved User Guide Rev 7 4 16 September 2014 41 NXP Semiconductors LPCXpresso v7 User Guide 9 Red Trace SWV Views Red Trace presents target information collected from a Cortex M3 M4 based system in a number of different trace views within the LPCXpresso IDE Each trace view is presented within the Debug Perspective or the Develop Perspective by default Trace views that are not required may be closed to simplify the user interface They may be re opened using the Window gt Show View gt Other menu item as per Figure 9 1 Show View 0 Ea type filter text amp C C cvs amp Debug amp Help amp Make amp Quickstart Red State 4 amp Red Trace d Data Watch Qy Host Strings Int Statistics rr Int Trace Profile amp Team Cancel Figure 9 1 Reopening a view The following trace views are provided Profile e Provides a statistical profile of application activity Interrupt Statistics e Provides counts and timing information for interrupt handlers Interrupt Trace e Provides a time based graph of interrupts being
192. ystem for pedestrians to cross a busy street This will be implemented using four outputs hooked up to LEDs and one input hooked up to a button We ll assume that the first three LEDs correspond to the red amber and green traffic lights and the fourth lights up a walk sign for the pedestrians The traffic lights are green until a pedestrian presses a button This tutorial implements the USA traffic light transitions green only gt yellow only gt red only gt green only When a pedestrian presses the button it will change the traffic lights from green to red then turn on the walk sign for a period Then the walk sign will be turned off and the traffic lights set to green 18 2 Creating a new project 18 2 1 Importing the base project Start by importing the library project for the RDB1768 board Select import project s from the Quickstart Panel visible in the C C perspective see Figure 18 1 Quickstart Panel a 5 a ej New project Import project s Build all projects A Build oe Clean s Debug Quick Settings v Figure 18 1 Importing projects Press browse for the project archive zip text box and locate the RDB1768cmsis2 zip file in the Examples NXP LPC1000 LPC17xx folder Select it then press Next to get a list of projects contained in the archive The archive contains several projects we are only interested in three of them The cmstsv2xx_LPCcl7xx project

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