EVBplus2 68HC11 Development Board Getting Started Manual
Contents
1. s hung in a loop The only way to stop it is to reset the board The problem with resetting the board is that you would not know where the 68HC11 was hung It also leaves a SWI instruction on all breakpoint addresses and you have to re download your s19 file all over again Here is a very simple program but it s complete It will flash the PB7 LED when it s running For a good programming practice you should always make the first line of your code with the LDS instruction PB7 EQU 80 bit 7 of port B FLS_RATE EQU 8B00 change this number will change LED flash rate ORG D000 START LDS 8FFF LDX 1000 X register points to the register block BACK BSET 0 X PB7 turn on the PB7 LED by setting PB7 1 JSR DELAY BCLR 0 X PB7 turn off the reset LED by resetting PB7 0 JSR DELAY JMP BACK DELAY LDY FLS_RATE DLY DEY BNE DLY RTS END 2 Save your file frequently while editing If you are creating a new file and giving the file a name to save enter the file name including the file extension such as test asm not just test 3 Click Build button gt Assemble or click the assembler button on the toolbar to assemble your code and generate an s19 file If the assembler detects an error the error message will show the line numbers in your source code that made error Beware that sometime not very often but it does happen the freeware assembler may indicate a wrong error line in the file and the actual line that c2. AsmIDE exe an application program left click the Send to and finally left click the Desktop do not click the COPY It will create an icon of the shortcut to AsmIDE on the desktop You can double check the target location by right clicking on the icon then left clicking on the properties and you should see that the target location is C Ep2IDE If you want to make a shortcut for the AsmIDE on the Desktop this is the right way to do If you don t follow this method your program may have a problem to run Never drag the AsmIDE exe to the desktop folder The default setting of the AsmIDE for the Ep2711 board is created in a text file named c Ep2IDE AsmIDE ini In the future if you get lost with all the changes you always can copy this file into c Ep2IDE GETTING STARTED with BUFFALO Monitor The Memory Map with the BUFFALO monitor 0000 00FF 0000 01FF 002D 00FF 1000 103F 2000 3FFF 4000 5FFF 6000 61F F 6200 63F F 6201 6203 6200 6202 6400 65F F 6400 6401 6600 67FF 6800 7F FF 8000 DFFF E000 FFFF On chip 256 byte RAM for the 68HC11A1 On chip 512 byte RAM for the 68HC11E1 On chip RAM used by BUFFALO monitor On chip 64 control registers External device CS on the pin40 of J1 8K EEPROM of U3 not used 65C22 PORTF DDRF PORTG DDRG 68B50 UCTRL USTAT UART not used not used RAM for user code or data BUFFALO monitor firmware in U2 Any
3. Wytec hc11 tools or click the debugger button on the toolbar that will bring up a small dialog window You can see the file to be downloaded is c Ep2IDE Ex_WYTEC test s19 The current download s19 file name is always updated by the assembler 4 Now you MUST click the Select this file button which will store the file name test s19 into a text file named c Ep2IDE Ep2IDE txt so the debugger can automatically download the test s19 by reading the Ep2IDE txt when it s invoked This is a very important step and you must do it when you want to debug a different program 5 Click the Debugger button and the debugger will automatically download the test program TEST s19 The programmer button is used to program the on chip EPROM of a 68HC711E9 and you can ignore it for the time being 6 At the prompt Ep6811 gt enter g start the label is case sensitive Enter It will run the TEST program in real time The program will test the switches scan keypad send message to the LCD display emulate an IR proximity sensor adjust the LED display brightness generate music and shift number 0 to F on the seven segment display At first you can press the PCO and PC1 pushbutton switches and see the change on the PBO and PB1 LEDs then press the PAO switch the sound should come out You can press the ESC key on the PC keyboard to stop the program If you stop the program the speaker will generate clicking noise because the output comparator is still i
4. a big problem especially for the new beginners For instance you debug your code in expanded mode but the MODEB and MODEA are set for bootstrap you know it won t work If the jumper on the J19 is missing the LCD backlight won t work and if the jumper on the J18 is missing the 7 segment display won t be lit Before troubleshooting the board you must apply the power to the board Press the reset button the LED should blink twice If it does not happen the board may not have 5V DC Use a DMM to check voltages at the VCC test point Sometimes it may be caused by a bad AC adapter or the AC adapter is not even plugged in Sometime the Config register has a wrong value but the 68HC11 chip is still good To determine if the board malfunctions you can restore the board jumper settings to the original default settings when you receiving the board The default settings are as follows J5 Mode selector No jumper installed J8 HC11 SCI receiver source selector numbering from top to bottom The jumper is on the bottom position labeled with IR 19 J9 The PRG RUN jumper is used for selecting the operating mode It s on the left position for debugging your code J12 Clock selector It s on the right position labeled with INT the clock is provided by the on board crystal J15 Monitor selector It s on the middle position for the BUFFALO monitor J17 IR transceiver control source selector The jumpers are on the upper
5. by a timer and is not disabled the timer interrupt will continue even it s not called for in your new application program The result will be unpredictable 3 Disconnect LCD module from the bottom of the main PCB first The LCD display module has 2 supporting nylon spacers They fit tighter with the LCD module PCB than with the main PCB So if you need to remove the LCD module from the board the spacers should stay with the LCD module That means you should use a pair of pliers to push up the spacers from the bottom of the main PCB to separate the spacers from the main PCB Once the spacers are loose from the main PCB you can easily unplug the LCD module 20
6. jumper is used for selecting the operating mode When it s on the right position the board is used for programming the 68HC711E9 chip When it s on the left position it s for debugging your code J10 Connects the VR1 trimmer pot to the PE7 of the ADC it is hard wired J11 Analog voltage reference selector When it s on the right position the on board 5V DC is the reference voltage When it son the left position the user target provides the ADC reference voltage It s hard wired to the on board 5V DC reference voltage J12 Clock selector When it s on the right position labeled with INT the clock is provided by the on board crystal When it s on the left position labeled with EXT the user target provides a HC compatible clock source J13 Clock output It s not installed If it s installed the clock output of the 68HC11 pin 8 can be a clock source of user target board J14 Enables speaker The speaker is driven by the PA5 Output Comparator 3 through the jumper J14 It s hard wired J15 Monitor selector Place the jumper on the top position for the Wytec monitor the middle position for the BUFFALO monitor and the bottom position for auto start the program in the U3 J16 Connects the HC11 SCI s PD1 to all communication hardware RS232 RS485 and IR transceiver on this development board It is hard wired J17 IR transceiver control source selector When the jumpers are on the upper position labeled
7. kit for your experiment The schematic is in RF_jack jpg BUFFALO I O routines Many 68HC11 books have example programs that access BUFFALO I O routines The BUFFALO I O routines located at FFAO FFCF When using with the Wytec debugger WBUG11 with this board the BUFFALO I O functions are duplicated at 0FAO 0FCF Following are the BUFFALO I O routines function description and jumper table ORG 0FAO UPCASE convert the character in A to uppercase WCHEK test the character in A for white space and returns with the Z bit set if Ais a white space Space comma tab DCHEK test the character in A for white space and returns with the Z bit set if Ais a carriage return or white space Space comma tab INIT initialize SCI is not needed with the EP2711E9 board INPUT reads PC keyboard input OUTPUT writes the character in the A to CRT display OUTLHLF converts 4 most Significant Bit of A to ASCII and Writes it to CRT display OUTRHLF converts 4 most Significant Bit of A to ASCII and Writes it to CRT display OUTA output ASCII character in A to CRT display OUT1BYT converts the binary byte that is pointed to by X register to 2 ASCII bytes and write them to CRT display OUT1BSP its OUT1BYT followed by sending a space to the CRT display OUT2BSP converts the binary word 2 bytes that is pointed to by X register to 4 ASCII bytes and write them followed a space to CRT display OUTCRLF write carriage return line feed to CRT display OUTSTRG i
8. left click the Explorer left click on C Ep2IDE left click on AsmIDE exe If you have created a shortcut icon on the desktop just double click the AsmIDE icon on the desktop Step 5 The default setting of the AsmIDE for the Ep2711 board is created in a text file named c Ep2IDE AsmIDE ini In the future if you get lost with all the changes you always can copy this file into c Ep2IDE In the View gt Options gt Wytec hc11 tools menu you must check the Wytec Tools Enabled box to use the Wytec Debugger software WBUG11 You can change the COM port number but you do not have to change the baud rate because the WBUG11 will set it at 38 4K for you Please note that the default debugger startup batch name is wbug11 exe not mydebug bat If you left click the assembler tab under the AsmIDE options menu you also can see that the default assembler name for the hc11 is myasm11 bat not as11 exe These are two setup changes we have to make from the original AsmIDE Step 6 All sample programs are debugged and tested for your convenience and they are located in the folder c Ep2IDE Ex_WYTEC Here are steps to run your first sample program 1 Click the File button to load the test asm from c Ep2IDE Ex_WYTEC to see all instructions on the beginning of this program 2 Click the Build button gt Assemble or click the assembler button on the toolbar to assemble your code and generate the test s19 file 3 Click the Build button gt
9. the key 8 is down The keypad scan routine then sets PG1 low PG0 PG2 PG3 high then test the PG4 PG7 If no key is down PG4 PG7 remain high If PG7 low the key 7 is down If PG6 low the key 6 is down If PG5 low the key 5 is down If PG4 low the key 4 is down The keypad scan routine then sets PGO low PG1 PG2 PG3 high then test the PG4 PG7 If no key is down PG4 PG7 remain high If PG7 low the key 3 is down If PG6 low the key 2 is down If PG5 low the key 1 is down If PG4 low the key 0 is down SPI port pinouts are as follows Pin1 VCC 5V Pin2 VCC 5V Pin 3 PF2 LOAD Pin4 PD2 SPI DATA IN Pin5 PF3 STROBE Pin6 PD3 SPI DATA OUT from 68HC11 Pin7 not used Pin8 PD4 CLOCK Pin9 GND Pin 10 GND All on board jumpers J1 40 pin logic analyzer connector Motorola 68HC11 EVM compatible J2 Port F and Port G total 16 bits the left side is port F and the right side is port G J3 LCD port J4 SPI connector J5 Mode selector The letter J5 is not printed on the PCB It s a minor mistake J6 4 X 4 keypad interface J7 RS485 direction control hard wired J8 HC11 SCI receiver source selector numbering from top to bottom 1 SCI PDO receives signal from your target system via the P1 or P1F 2 SCI PDO receives signal from the P3 DB9 connector for RS232 input 3 SCI PDO receives signal from the JK1 or JK2 RJ12 jacks for RS485 input 4 SCI PDO receives signal from the on board IR receiver J9 The PRG RUN
10. to assemble your code IF your code has no errors it will generate an s19 file a listing file and a symbol file If the assembler detects an error the error message will show the line numbers in your source code that made error Beware that sometime not very often but it does happen the freeware assembler may indicate a wrong error line in the file and the actual line that caused error may be one line off 4 Correct the errors and go back to step 3 until there are no errors 5 After your code is successfully assembled you click the Build button gt Wytec hc11 tools gt select this file button to update the file c Ep2IDE Ep2IDE txt for the debugger 6 Close the dialog window activate the WBUG11 from the task bar and press the F10 function key and R option the debugger will automatically download 3 files namely YOUR_FILENAME S19 YOUR_FILENAME SYM and YOUR_FILENAME PAR The 19 file is the hex code the SYM file is the symbol file so you can use symbols in commands instead of hex numbers The PAR file is the parameter file that includes the EEPROM programming enable disable flag INIT TMSK2 OPTION and BPROT register values the breakpoint addresses and the memory display addresses The assembler does not make a PAR file but the Debugger does When you first invoke the debugger there would be no PAR file exists When you exit the debugger the debugger will create one by saving the current settings The PAR file is automatica
11. when the VCC drops below 4 6V People often use different terminology In our product menus the Download means to transfer a file from PC to development board while the Upload means to transfer a file from development board to PC Through out the manual the left click means that you click the left button on the mouse the right click means that you click the right button on the mouse Un install old Ep2IDE software If you have already installed the old version of Ep2IDE before 05 01 03 on your hard drive you can un install it because it will no longer be needed The procedure to un install is 1 Click the Start Button gt Setting gt Control Panel gt Add Remove Programs and then find the Ep2IDE to remove 2 Rename or delete the folder Ep2IDE Install new Ep2IDE software from CD Make sure to rename the current folder c Ep2IDE before installing new software by running the SETUP BAT on the CD The installation will OVERWRITE the current folder if you don t rename it After software is successfully installed you can make a shortcut of the AsmIDE exe If you do not want to make a shortcut you have to click the c Ep2IDE AsmIDE exe every time you invoke the AsmIDE exe It s very important to make a shortcut so that its target location of the shortcut is C Ep2IDE not c Windows desktop or other locations At first right click the Start button then left click the Explorer left click on C Ep2IDE right click on
12. with SCI the HC11 s PD1drives the IR transmitter and the HC11 s PDO receives the data from the IR receiver The PDO and PD1 can be general I O lines or the SCI UART When the jumpers are on the lower position labeled with PA26 the HC11 s PAG drives the IR transmitter and PA2 receives the data from the IR receiver J18 Enables the 7 segment LED display driver U11 74HC367 If the 7 segment LED display is not needed in an application remove this jumper to turn off the display and save the power J19 Enables LCD backlight If the LCD display is not needed in an application remove this jumper to turn off the backlight and save the power J20 12V output from the U16 5V 12V converter J21 U3 EEPROM write protect place the jumper on the left position to disable write protect EEPROM programming Place the jumper on the right position to enable EEPROM programming J22 Enables BUFFALO trace function and the PA3 is connected to the XIRQ to enable the single stepping operation when the jumper is on the left position When it s on the right position the PA3 is disconnected from the XIRQ Sensor port The top line is the signal the middle line is VCC and the bottom line is GND Digital sensors can be connected to the PAO PA1 PA2 and PA7 The analog sensor can be connected to the PEO PE3 There is a 100K pullup resistor on each sensor input The MODEA and MODEB jumpers They are not used in debugging sessions They can be used f
13. 64 control registers 2000 3FFF External device CS on the pin40 of J1 4000 5FFF not used 6000 61FF not used 6200 63FF 65C22 6201 PORTF 6203 DDRF 6200 PORTG 6202 DDRG 10 6400 65F F 68B50 6400 UCTRL USTAT 6401 UART 6600 67FF not used 6800 7FFF not used 8000 DFFF RAM for user data E000 F FFF User code in U3 8K EEPROM Program the 8K EEPROM in the U3 and 512 byte on chip EEPROM You can program the 8K EEPROM in the U3 and the 512 byte on chip EEPROM B600 B7FF under control of the Wytec debugger WBUG11 Use the Load command as described on the page 10 The instructions will be shown on the screen when the L command is entered If you want to use the board as a SBC you can program your application s19 file into the U3 8K EEPROM and place a jumper on the bottom position of the J15 at the left side of the speaker It will completely bypass both the Wytec s proprietary phantom monitor and the BUFFALO monitor The address range of the U3 is changed from 4000 5FFF to E000 FFFF and the address range of the U4 is changed from 8000 FFFF to 8000 DFFF The program code will auto start from the U3 after reset or power up You can only program the U3 8K EEPROM under control of the Wytec debugger WBUG11 and your application s19 file must be assembled in the address range of EOQ00 FFFF Here are the steps to program the U3 with the file test s19 1 Move the jumper to the right position on the J21 to en
14. EVBplus2 68HC11 Development Board Getting Started Manual Version 2 27 for Ep2711E9 Rev C board Table of Contents GETTING STARTED with BUFFALO Monitor GETTING STARTED with Wytec Phantom Monitor and WBUG11 Single Board Computer application ON BOARD HARDWARE BUFFALO I O ROUTINES IMPORTANT NOTES The Ep2711E9 a low cost and high performance development board provides real time emulation for the Motorola 68HC11 microcontroller A and E families It offers all useful features of the Motorola EVB board with the BUFFALO monitor and adds numerous enhancements at an extremely low cost It combines a complete 68HC11 development system an advanced trainer a reliable 711E9 programmer and a versatile SBC into one package For engineers it s a WICE in circuit emulator development system and Motorola EVB EVM EVS replacement a convenient prototype platform and a low cost single board computer For students it s a user friendly microcontroller trainer It is as powerful as a high priced real time in circuit emulator but it s affordable as a low cost single board computer Ep2711E9 includes easy to use and user friendly IDE software which runs under Windows 95 98 2000 and XP It offers fast file transfer single stepping breakpoints data watch for memory and registers symbolic debugging compatibility with most assemblers and compilers and user program termination with the lt Esc gt key Our exclusive phantom monitor tec
15. SC key at the PC keyboard it will interrupt the Ep2711E9 but the BUFFALO monitor can t stop the program unless you reset the board The problem with resetting the board is that you would not know where the 68HC11 was hung It also leaves a SWI instruction on all breakpoint addresses and you have to re download your s19 file all over again Here is a very simple program but it s complete The program source code is similar to the tutor2 asm in the directory c Ep2IDE Ex_WYTEC It will flash the PB7 LED when it s running For a good programming practice you should always make the first line of your code with the LDS instruction PB7 EQU 80 bit 7 of port B FLS_RATE EQU 8B00 change this number will change LED flash rate ORG F000 START LDS FF the top of A1 internal RAM LDX 1000 X register points to the register block BACK BSET 0 X PB7 turn on the PB7 LED by setting PB7 1 JSR DELAY BCLR 0 X PB7 turn off the reset LED by resetting PB7 0 JSR DELAY JMP BACK DELAY LDY FLS_RATE DLY DEY BNE DLY RTS ORG FFFE FDB START reset vector END 2 Save your file frequently while editing If you are creating a new file and giving the file a name to save enter the file name including the file extension such as test asm not just test NOTE Since the debugger is written in DOS the filename should not be longer than 8 characters 3 Click Build button gt Assemble or click the assembler button on the toolbar
16. able EEPROM write Enter Load command and select the E option to download an s19 file into the U3 Enter test s19 as the file name to be downloaded When the programming cycle starts the PBO PB7 LEDs will act as a binary counter The programming is done when LEDs stop counting Move the jumper to the left position on the J21 to write protect the U3 N OQ a F WN Move the jumper on the J15 to the bottom position labeled with the U3 8 Press the reset button your application program should run Before programming you have to make sure that the jumper on the J21 is on the right side to enable EEPROM write otherwise the programming software will not continue After programming place the jumper on the left side of the J21 to write protect the EEPROM otherwise the EEPROM could lose data quite easily after running a bad program during a debugging session The 28 pin DIP socket for the U3 is not built for a high volume production programmer It will not last much longer than 50 insertions The procedures to program the 512 byte on chip EEPROM B600 B7FF are the same above steps except the step 2 Select the B option instead of the E option after the Load command id entered About AsmIDE The AsmIDE is written by Eric Engler and it s simple and easy to use It offers all basic features that you need to learn 68HC11 programming with this board Some time a simple IDE may not be a bad idea at least students don t need to spend too mu
17. al I O port and it is connected to an 8 position DIPswitch The DIPswitch is connected to GND via eight 4 7K resistors so it s not dead short to GND When the port C is programmed as an output port the DIPswitch setting is ignored The PAO switch is used as a general input switch except during the initial power up During the initial power up press and hold the PAO switch while press the RESET button will force the 68HC11 to enter test mode In the test mode the configure register can be modified The PA3 and PA4 headers are the outputs of the Output Comparator 5 and 4 and they can be used to drive robot servos The Port E is an 8 bit ADC or a general input port The trimmer VR1 is hard wired to the PE7 input of the ADC port via the J10 but the trace can be cut if the PE7 must be used by target circuit for a different purpose 12 An on board logic probe LED is hard wired to the pin 55 of the female socket connector P1F and can be used to monitor high or low status at any point of the circuit as a logic probe The U16 LTC1262 or MAX662 provides a 12 V programming voltage for the 68HC711E9 The U18 74HC14 generates the 38 4K baud for the U5 68B50 and it also provides the 38KHz square wave to the IR transmitter The U9 SN75176 converts the TTL signal from the SCI to the RS485 differential signals and visa versa The two RJ12 jacks JK1 and JK2 can be used to daisy chain many Ep2711E9 boards together for a network application The conn
18. attempt to write to the locations 6000 87FF will have unpredictable results and must be avoided in the user program Because most text books are written for the BUFFALO monitor the Ep2711E9 board now comes with both the BUFFALO monitor and the Wytec Phantom Monitor installed in the U2 If you have worked with the BUFFALO monitor you can use the board right away In fact if you use the BUFFALO monitor mode with this board the board becomes an ordinary 68HC11 EVB board just like many other EVBs on the market today except it offers more on board peripherals Before testing the board with the BUFFALO monitor place a jumper on the middle position labeled with BM which stands for BUFFALO Monitor of the J15 and another jumper on the left position labeled with TRACE of the J22 To test the board follow the steps 1 through 6 below Step 1 Plug the AC adapter into a wall outlet and plug the DC plug at the other end into the DC jack on the lower right corner of the Ep2711E9 board During the power up the reset LED should blink twice and all other LEDs must be off If not turn over to the Questions amp Answers section of the user manual Step 2 Plug the DB9 male end of the cable into the DB9 connector P2 on the upper right corner of the Ep2711E9 board and plug the DB9 female end of the cable to the COM1 or COM2 port on the PC The DB9 connector P3 on the lower right side of the board is the 68HC11 SCI port that can be use
19. aused error may be one line off WARNING The free assembler will generate an error on the BSET BCLR BRSET and BSCLR instructions if more than one commas are used in those instructions For instance BSET 0 X 20 or BRSET 0 X 20 FO00 is illegal but BSET 0 X 20 or BESET 0 X 20 F000 is OK You have to use a space character to separate fields not a comma 4 Go to the line and correct the errors and go back to step 3 until there are no errors The EVBplus2 board is an ordinary EVB board with the BUFFALO monitor but it s an easy to use and powerful In circuit Emulator type of development system when it s under the control of the Wytec Symbolic Debugger WBUG11 If you don t use the WBUG11 you will not be able to exploit all of the features Once you have used the WBUG11 you will not want to use the BUFFALO again It s a fact that many of our users would agree GETTING STARTED with Wytec Phantom Monitor and WBUG11 The Memory Map with the Wytec phantom monitor 0000 00FF 0000 01FF 0800 0F FF 1800 1F FF 1000 103F 2000 3FFF 4000 5FFF 6000 61F F 6200 63F F 6201 6203 6200 6202 6400 65FF 6400 6401 6600 67F F 6800 7F FF 8000 87F F 8800 FFFF On chip 256 byte RAM for the 68HC11A1 On chip 512 byte RAM for the 68HC11E1 Wytec monitor firmware in U2 Wytec monitor firmware in U2 On chip 64 control registers External device CS on the pin40 of J1 8K EEPROM of U3 not
20. ch time to learn how to use the IDE so they will have more time to focus on learning the 68HC11 which is their main objectives of taking the course If you spend a lot of time to master a bloated IDE and then you don t use it for a while you probably would forget how to use it anyway so why spend time on something that you are going to lose it anyway On the contrary a simple easy to use IDE saves your time and you will remember how to use it even you don t use it for a long period of time 11 The most valuable asset of the EVBplus2 board is the WICE debugger WBUG11 Some boards that you can buy today may have a bloated IDE but you probably would get a BUFFALO type monitor for debugging Using your own assembler or editor for WBUG11 If you would prefer to use your own assembler or editor instead of the AsmIDE you can use the AsmIDE for launching the WBUG11 The full path name of the file that you work on must agree to the file name shown on the Wytec hc11 tools dialog window otherwise the WBUG11 would not be able to locate your s19 file to be downloaded Make your own monitor If you want to make your own monitor to install a high language source level debugger you can treat your monitor as an application and program it into the U3 8K EEPROM according the instruction shown on the previous page Using the board as a 68HC711E9 programmer If you need to program a 68HC711E9 you can use this board as a 68HC711E9 programmer but on
21. d by user s application program Step 3 Press the reset button on the Ep2711E9 board and the reset LED which is located above the switch should blink twice If not turn over to the Questions amp Answers section of the user manual Step 4 To invoke the AsmIDE right click the Start button then left click the Explorer left click on C Ep2IDE left click on AsmIDE exe If you have created a shortcut icon on the desktop just double click the AsmIDE icon on the desktop The screen is divided into two windows The top window is for editing your source code and the bottom window is shared by the message window and the terminal window Step 5 You only need to use three commands from the AsmIDE for your 68HC11 development work Use the File command to edit your source code the Build gt Assemble command to assemble your source code and the Build gt Download command to communicate with the Ep2 1711E9 board In the View gt Option gt Terminal Window Options menu set the com port 1 or 2 to match your PC com port set com port options at 9600 N 8 1 and check the enable the terminal window box which will disable Wytec hc11 tools In the View gt Option gt Assembler menu make sure that the chip family is 68HC11 and you also can see that the default assembler name for the hc11 is myasm11 bat not as11 exe This is the only setup change we have to make from the original AsmIDE If you would like to use your own assembler you ca
22. ections on the JK1 and Jk2 are identical so either one can be input or output Two I O ports port F and port G are added through the U1 VIA 65C22 These are bi directional ports The port F and port G are the port A and port B of the 65C22 respectively The address locations for the ports are as follows PORTF 6201 DDRF 6203 1 OUTPUT O INPUT PORTG 6200 DDRG 6202 1 OUTPUT O INPUT The CA2 output from the 65C22 is used to control the direction of the RS485 communication If the CA2 0 the RS485 port U9 DS75176 is set for receiver port If the CA2 1 the RS485 port U9 DS751 76 is set for transmitter port CA2 0 RS485 receiver port CA2 1 RS485 transmitter port For users convenience there are two subroutines added to control the CA2 User can call RS485_ RECV at 0800 to reset CA2 to 0 or RS485_XMIT at 0803 set CA2 to 1 The following are all I O subroutines in Wytec monitor that are callable from user s application programs ORG 0800 EVBplus2 Rev C board I O routines RS485_ RECV RMB 3 enables RS485 receiving mode RS485_XMIT RMB 3 enables RS485 transmitting mode GET_DATE RMB 3 gets current date from PTC GET_TIME RMB 3 gets current time from PC OUTSTRGOO RMB 3 outputs a string terminated by 0 LCD_INI RMB 3 initializes the 16x2 LCD module LCD_LINE1 RMB 3 displays 16 char on the first line LCD_LINE2 RMB 3 displays 16 char on the second line SEL_INST RMB 3 selects instruction before writi
23. enter the command too earlier it could disrupt the communication and you will get an error message In the command line ALL NUMBERS ARE HEXADECIMAL and the sign is not needed Also you should notice that the label start has the back slash in the front All hex numbers may be substituted by symbols starting with the backslash For more information read the Command format section in the user manual 8 During the debugging session if you want to modify your source code you don t have to exit the debugger You can activate the AsmIDE to edit your code and save your new code in the same file name then click the Build button gt Assemble or click the assemble button on the toolbar to assemble the code After the new S19 file is generated because you did not change the file name you don t have to click the Select this file button again Only thing you have to do is to click the WBUG11 button at the task bar at the bottom line of the screen to activate debugger window then enter the F10 key and the R option to download your files and start to debug again Single Board Computer application The Memory Map in Single Board Computer application 0000 00FF On chip 256 byte RAM for the 68HC11A1 0000 01FF On chip 512 byte RAM for the 68HC11E1 0800 OFFF Wytec monitor in U2 some subroutines are callable from user programs 1800 1F FF Wytec monitor in U2 some subroutines are callable from user programs 1000 103F On chip
24. f the J6 is as follows Pin1 PGO connects ROWO of the keypad Pin2 PG1 connects ROW1 of the keypad Pin3 PG2 connects ROW2 of the keypad Pin4 PG3 connects ROW3 of the keypad Pin5 PG4 connects COLO of the keypad Pin6 PG5 connects COL1 of the keypad Pin PG6 connects COL2 of the keypad Pin8 PG7 connects COL3 of the keypad Keypad interface PGO connects ROWO of the keypad via pin 1 of the 8 pin keypad header PG1 connects ROW1 of the keypad via pin 2 of the 8 pin keypad header PG2 connects ROW2 of the keypad via pin 3 of the 8 pin keypad header PG3 connects ROW3 of the keypad via pin 4 of the 8 pin keypad header PG4 connects COLO of the keypad via pin 5 of the 8 pin keypad header PG5 connects COL1 of the keypad via pin 6 of the 8 pin keypad header PG6 connects COL2 of the keypad via pin 7 of the 8 pin keypad header 14 PG7 connects COL3 of the keypad via pin 8 of the 8 pin keypad header The PGO PG7 has a 100K pull up resistor in each line The keypad scan routine sets PG3 low PG0O PG1 PG2 high and then test the PG4 PG7 If no key is down PG4 PG7 remain high If PG7 low the key 15 is down If PG6 low the key 14 is down If PG5 low the key 13 is down If PG4 low the key 12 is down The keypad scan routine then sets PG2 low PG0 PG1 PG3 high then test the PG4 PG7 If no key is down PG4 PG7 remain high If PG7 low the key 11 is down If PG6 low the key 10 is down If PG5 low the key 9 is down If PG4 low
25. he prompt gt type LOAD T lt Enter gt 5 Click the Build gt Download button select the file c Ep2IDE Ex_BUFFL test s19 for downloading 6 After the download is done type G D000 to run the program It will run the TEST program in real time The program will test the switches scan keypad send message to the LCD display emulate an IR proximity sensor adjust the LED display brightness generate music and shift number 0 to F on the seven segment display At first you can press the PCO and PC1 pushbutton switches and see the change on the PBO and PB1 LEDs then press the PAO switch the sound should come out To stop the program you have to press the reset button momentarily For more details on all sample programs please read the readme txt in the c Ep2IDE EX BUFFL folder All example programs are fully debugged so the assembler won t generate an error report If you have an error in your program you must correct it before an s19 file can be generated You can try to run a different example program later after finishing reading this manual You should always press the reset button before download a new program because download may not work if interrupt was enabled by a previous program Software development with the BUFFALO monitor We are using the AsmIDE as a terminal program in the following instructions to create your source code If you are using a different terminal program the instructions may vary The steps
26. hnology preserves all interrupt vectors including RESET and All on chip RAM 00 1FF EEPROM and 30K external emulation RAM 8800 FFFF available for user applications there is no pre empted chip memory Because many students are taught with the Motorola BUFFALO we installed the BUFFALO monitor on the U3 and the board can be booted from the BUFFALO monitor so students can use the board immediately before leaning how to use the board under Wytec phantom monitor The hardware includes a prototype area 16 extra I O lines in port F and G one logic probe on board 16X2 LCD display with backlight 4x4 keypad connector 8 sensor input port SPI port speaker 4 digit LED display potentiometer 8 LED status indicators for port B one 8 position DIP switch connected to port C 3 pushbutton switches dual UARTs RS485 interface IR transceiver with on board 38 KHz OSC on board 12V programming voltage supply and 60 pin EVB EVBU compatible male and female connectors The package also includes a 7 5V 300mA wall plug in power supply and a 6 foot DB9 cable The specification of the AC adapter is DC input 110V DC output 7 5V to 9V Current rating 300 mA to 1A Type of plug 2 1mm female barrier plug center positive The AC adapter is only available to the countries that use 110V If more power is needed in a Robot or other applications the user should upgrade the AC adapter to 9V 500mA or 9V 1A otherwise the board could keep resetting itself
27. lly saved after you exit the debugging session After that the par file will always exist Also the Write command of the debugger can make a PAR file After invoking the Write command in the debugger it will prompt you to enter a choice among U S and P options choose the P option and give a full file name such as test par it will make a PAR file for you The most useful feature of the PAR file is to remember the INIT register value Suppose you relocate the 68HC11 control registers to a different memory block by changing the value of the INIT register in the beginning of your source program the INIT register can only be changed in the first 64 E cycles in expanded mode you have to use the Init command to change the INIT register to match that value before running your program under the WBUG11 otherwise your program will not run When the PAR file is loaded it will generate a system reset and force the 68HC11 to take the new INIT register value from the PAR file For more information see the Questions amp Answers section of the user manual 7 When download is finished and at the prompt Ep6811 gt you can run your program by entering go start where the start is the label of the starting address in your source code or enter Go F000 if you know the starting address is F000 but do not enter command too earlier After download the PC will reset the board during the reset there would be some communication between the PC and the board If you
28. ly under control of the Wytec debugger WBUG11 At first you must make sure that the program is fully debugged To activate the programmer click the Build button gt Wytec hc11 tools or click the debugger button on the toolbar that will bring up a small dialog window If the current download s19 file is correctly shown on the dialog window click the Select this file button and then click the programmer button to program the 68HC711E9 The programming is done in the bootstrap mode and the programming instructions will be displayed on the screen step by step The memory addresses range for the 68HC711E9 is from D000 to FFFF If your S19 file contains addresses outside of this range an error message will be generated and the chip will not be programmed During the programming the data will be automatically verified The 52 pin PLCC socket is not built for a high volume production programmer It will not last much longer than 100 insertions When the contacts of the PLCC socket are worn you can use a fine dental tool to pry up the contacts a little bit to extend its life considerably ON BOARD HARDWARE The port B and port C are used for address and data buses and they are not available as I O ports during debugging session in the expanded mode but they are emulated by the PRU chip 68HC24 The PRU stands for port replacement unit The port B is an output port and each port B line is monitored by a LED The port C is a bi direction
29. n make a batch file to replace the myasm11 bat If the assembler generates an error it also will show the error s line number in the file along with an error message Go to the line to make a correction If the terminal options are set correctly the jumper is installed on the BM position of the J15 and the com port number is correct you should see the following sign on message every time the reset button is pressed If it does not the bottom window is still a message window Click the terminal button on the bottom window will enable the terminal window display EVBplus com BUFFALO 3 4 Bit User Fast Friendly Aid to Logical Operation Press the Enter key you will get the BUFFALO monitor prompt gt Step 6 All sample programs are debugged and tested for your convenience and they are located in the folder c Ep2IDE Ex_BUFFL Here are steps to run your first sample program 1 Click the File button to load the test asm from c Ep2IDE Ex_BUFF to see all instructions on the beginning of this program 2 Click Build button gt Assemble or click the assembler button on the toolbar to assemble your code and generate the test s19 file In order to display assembler messages the bottom window is switched to the message window 3 Click the terminal button of the bottom window to activate the terminal window and make sure that the BUFFALO monitor prompt gt is shown on the terminal window if not press the Enter key 4 At t
30. ng the LCD module SEL_DATA RMB 3 selects data before writing the LCD module WRT_PULSE RMB 3 generates a write pulse to the LCD module The circuit is designed in such way that the value of all resistors and capacitors are not critical they can be off 50 or 100 How to use the port F The port F is an 8 bit bi directional port Its primary usage is for a LCD display module If the port is not used for LCD display it can be used as a general purpose I O port that can be accessed via J2 or J3 The pinouts of the J3 is as follows 13 Pini GND Pin2 VCC 5V Pin3 Via a 100 Ohm resistor to GND Pin4 PFO RS pin for LCD module Pin5 GND Pin6 PF1 EN pin for LCD module Pin 7 Not used Pin8 Not used Pin9 PF2 Pin 10 PF3 Pin 11 PF4 DB4 pin for LCD module Pin 12 PF5 DB5 pin for LCD module Pin 13 PF6 DB6 pin for LCD module Pin 14 PF7 DB7 pin for LCD module Pin 15 Via an 18 Ohm resistor to VCC LED backlight for LCD module Pin 16 GND The pinouts of the J2 is as follows Pin1 PF7 Pin2 PG7 Pin3 PF6 Pin4 PG6 Pin5 PF5 Pin6 PGS Pin PF4 Pin8 PG4 Pin9 PF3 Pin10 PG3 Pin 11 PF2 Pin12 PG2 Pin13 PF1 Pin14 PG1 Pin 15 PFO Pin 16 PGO Pin17 VCC Pin 18 VCC Pin19 GND Pin 20 GND How to use the port G The port G is an 8 bit bi directional port Its primary usage is for a 4X4 keypad interface If the port is not used for keypad application it can be used as a general purpose I O port that can be accessed via J2 or J6 The pinouts o
31. nterrupting the 68HC11 To stop the clicking noise you can press the reset button momentarily For more details on all sample programs please read the readme txt in the c Ep2IDE Ex_WYTEC folder All example programs are fully debugged so the assembler won t generate an error If you have an error in your program you must correct it before an s19 file can be generated You can try to run a different example program later after finishing reading this manual You should always press the reset button before download a new program because download may not work if interrupt was enabled by a previous program Step 7 To run another program activate the AsmIDE from the task bar at the bottom of the screen this will minimize the debugger window click the Build button gt Wytec hc11 tools or click the debugger button on the toolbar that will bring up the Wytec hc11 tools dialog window Use the browser to choose the s19 file you want to download such as ex2 s19 then click the Select this file button and close the dialog window Do not click the Debugger button because the debugger is already invoked Now activate the WBUG11from the task bar and press the F10 function key and R option the ex2 s19 will be automatically downloaded At the prompt Ep6811 gt type g start Enter Software development with the Wytec s Phantom Monitor The steps to create your source code as follows 1 Click the File button to open an existing file or crea
32. or programming the 68HC711E9 OTP part in bootstrap mode The P3 DB9 female connector is configured as a DCE device and it can be directly connected to the PC s COM port Application Circuit Corner ACC and Solderless Breadboard The footprints of four popular 68HC11 applications are laid out on the upper left corner of the PC board The ACC consists of aDS1302 Real Time Clock with battery backup a DS1620 Digital Thermometer and Thermostat a 12V DPDT relay and a L293D Motor driver In the future we will offer each circuit in a separate kit With these application circuits this board can easily be transformed to a complete platform for Robot Home Automation or other useful applications The lower left corner is a small solderless breadboard with the similar pad pattern underneath All I O signals are available on the 60 pin female connector P1F The 60 pin male header P1 can be used to connect all user 16 I O boards made for the original Motorola 68HC11 EVB board Use the breadboard for prototyping or solder the components directly to the board if you remove the breadboard The EVBplus2 board is not complete without a small breadboard The schematic for the PC board is divided into sch1 jpg sch2 jpg and sch3 jpg The ACC schematic is in the sch_acc jpg New RF transceiver and phone jacks The Rev C board incorporates circuit layout under the breadboard for a RF transceiver a RJ12 jack and a RJ45 jack In the future we will offer a
33. position labeled with SCI the HC11 s PD1drives the IR transmitter and the HC11 s PDO receives the data from the IR receiver J18 Enables the 7 segment LED display driver U11 74HC367 The jumper is installed on this header J19 Enables LCD backlight The jumper is installed on this header J22 Enables BUFFALO trace function The jumper is on the left position If all above settings are correct and when you press the reset button the reset LED should blink twice If not press the reset button while holding down the PAO switch to enter test mode Sometime the Config register has a wrong value but the 68HC11 chip is still good and it will work in test mode In the test mode you can use the F8 function key to re program the value of the Config register to 0D If you cannot enter the test mode the 68HC11 is defective The crystal is not soldered to the board and it s held by two machine pins If you want to change the crystal just unplug it and replace it with a new frequency such as 9 8304 MHz Don t cut a crystal leads too short if it s shorter than its metal case could short the two machine pins 2 Always reset the board before downloading a new program If the previous application program that you ran was aborted then you may need to reset the board before downloading a new application program The reset action will disable the interrupt that was enabled by the previous application If the interrupt was caused
34. splay module displays 16 characters on the first line of a 16X2 LCD display module displays 16 characters on the second line of a 16X2 LCD display module selects instruction before writing a LCD module selects data before writing a LCD module generates a write pulse for LCD module converts Accu A to its segment pattern bit 7 of the Accu A Decimal Point of the 4 digit LED display module RS485_RECV RS485_XMIT GET_DATE GET_TIME OUTSTRGOO LCD_INI LCD_LINE1 LCD_LINE2 SEL_INST SEL_DATA WRT_PULSE SEVEN_SEGMENT The subroutine SEVEN_SEGMENT is a conversion routine that converts a hex numbers to its seven segment pattern The hex number range is from 00 to 20 At entry A hex A 00 A 01 A 02 A 03 A 04 At exit A segment pattern The letter or number to be formed by the segment pattern A 3F 0 A 06 1 A 5B 2 A 4F 3 A 66 4 18 A 05 A 6D 5 A 06 A 7D 6 A 07 A 07 7 A 08 A 7F 8 A 09 A 6F 9 0A 77 A 0B 7C B A 0C A 39 C A 0D A 5E D A 0E A 79 E A 0F A 71 F A 10 A 3D G 11 76 H 12 74 h A 13 A 1E J 14 A 38 L 15 A 54 n A 16 A 63 o A 17 A 5C o A 18 A 73 P A 19 A 50 r A 1A A 78 t A 1B A 3E U 1C A 1C u 1D A 6E Y A 1E A 08 B A 1F A 40 A 20 A 00 blank IMPORTANT NOTES The following are some important notes that you should know and they may save your time 1 Things to do if the board does not work Many little mistakes can cause
35. te a new file The memory locations from 00 FF for A family or 00 1FF for E family are available as the user DATA RAM The EVBplus2 board does not use RAM locations at 2D FF as the BUFFALO monitor does The 30K memory locations from 8800 to FFFF are available to the user program CODE In assembly language you specify the starting address by the ORG statement You can start DATA RAM at address 00 with the statement ORG 0 followed by RAM variables such as ORG 0 TEMP RMB 1 reserve one byte of RAM for temp storage XTEMP RMB 2 reserve two bytes of RAM for temp storage If your program is small say less than 4K you can start your program at address F000 with the statement ORG F000 followed by your program such as ORG FO000 LDS FF Initialize the stack point It will assemble your source program and generate hex code within 4K locations from F000 to FFFF If your program is larger you can change the ORG F000 to ORG E000 or ORG C000 You can use ORG E000 or ORG F000 because there is no BUFFALO monitor in the highest 8K locations SEQ00 F FFF After fully debugged your code you do not have to relocate your code and re assemble it again You can directly program the s19 file into a 68HC711E9 Your code is final for stand alone operation after finishing your debugging session it works just like a real time In Circuit Emulator The Ep2711E9 board can stop your program if it s hung in a loop when you press the E
36. to create your source code as follows 1 Click the File button to open an existing file or create a new file The memory locations from 00 2Cfor A family or 00 2C and 100 1FF for E family are available as the user DATA RAM The BUFFALO monitor uses RAM locations at 2D FF The 22K memory locations from 8800 to DFFF are available to the user program CODE or DATA In assembly language you specify the starting address of your CODE by the ORG statement You can start DATA RAM at address 00 with the statement ORG 0 followed by RAM variables such as ORG 0 TEMP RMB 1 reserve one byte of RAM for temp storage XTEMP RMB 2 reserve two bytes of RAM for temp storage If your program is small say less than 4K you can start your program at address D000 with the statement ORG D000 followed by your program such as ORG D000 LDS 8FFF initialize stack point It will assemble your source program and generate hex code within 4K locations from D000 to DFFF If your program is larger you can change the ORG D000 to ORG C000 or ORG A000 You cannot use ORG E000 or ORG F000 because the BUFFALO monitor occupies the highest 8K locations E000 FFFF After fully debugged your code you have to relocate it to FOOO FFFF or E000 FFFF and re assemble it again before programming it into a68HC711E9 You don t have to do this with the Wytec debugger WBUG11 Under the BUFFALO monitor the Ep2711E9 board cannot stop your program if it
37. ts OUTCRLF followed by writing the ASCII string that is pointed to by X register to CRT display and until character is 04 OUTSTRGO its OUTSTRG without writing leading carriage return amp line feed to CRT display INCHAR waits for an ASCII character from keyboard and put it in accumulator A Jump Table 0FAO UPCASE 0FA3 WCHEK OFA6 DCHEK O0FAQ INIT 0FAC INPUT OFAF OUTPUT 17 0FB2 OFB5 OFB8 0FBB O0FBE 0FC1 0FC4 0FC7 0FCA 0FCD OUTLHLF OUTRHLF OUTA OUT1BYT OUT1BSP OUT2BSP OUTCRLF OUTSTRG OUTSTRGO INCHAR We have added several I O routines in the beginning of our Phantom Monitor Following are the Phantom Monitor s I O routines function description and jumper table starting at 0800 RS485_RECV RS485_XMIT GET_DATE GET_TIME OUTSTRGO0O LCD_INI LCD_LINE1 LCD_LINE2 SEL_INST SEL_DATA WRT_PULSE SEVEN_SEGMENT Jump Table 0800 0803 0806 0809 080C 080F 0812 0815 0818 081B 081E 0821 ORG 0800 sets the RS485 port to receiver mode sets the RS485 port to transmitter mode X register points to a 10 byte RAM block before calling this subroutine it returns the date information of host PC in the format of MM DD YYYY X register points to an 11 byte RAM block before calling this subroutine it returns the time information of host PC in the format of HH MM SS AM or HH MM SS PM It s OUTSTRGO except the ending character is 00 instead of 04 initialize a 16x2 LCD di
38. used 65C22 PORTF DDRF PORTG DDRG 68B50 UCTRL USTAT UART not used not used RAM used by Wytec monitor RAM for user code or data Any attempt to write to the locations 6000 87FF will have unpredictable results and must be avoided in the user program Before testing the board with the Wytec monitor place a jumper on the top position labeled with WYTEC which stands for Wytec Monitor of the J15 and another jumper on the right position of the J22 To test the board follow the steps 1 through 7 below Step 1 Plug the AC adapter into a wall outlet and plug the DC plug at the other end into the DC jack on the lower right corner of the Ep2711E9 board During the initial power up the reset LED should blink 4 times and all other LEDs must be off If not turn over to the Questions amp Answers section of the user manual Step 2 Plug the DB9 male end of the cable into the DB9 connector P2 on the upper right corner of the Ep2711E9 board and plug the DB9 female end of the cable to the COM1 or COM2 port on the PC The DB9 connector P3 on the lower right side of the board is the 68HC11 SCI port that can be used by user s application program Step 3 Press the reset button on the Ep2711E9 board and the reset LED which is located above the switch should now blink only twice If not turn over to the Questions amp Answers section of the user manual Step 4 To invoke the AsmIDE right click the Start button then
Download Pdf Manuals
Related Search