User manual for port expander STMPE2401 demostration board
Contents
1. and USB power supply while you are using the PC GUI or in stand alone mode Even while providing the power to the demo from external source you can use the PC GUI but for that you need to provide USB connectivity using USB connector d UM0300 2 2 1 a Running the STMPE2401 port expander demo board Running the STMPE2401 port expander demo board This Port Expander demo board consists of two main parts e PCGUI Demonstration board Again in Stand alone mode the demonstration board can be used without PC GUI Before using the demo board in either standalone or PC GUI mode we need to do following jumper settings e Connect JP1 and JP2 to the I C side Left Side e Connect JP3 to the Left side to use external crystal oscillator Connect JP4 to the power supply you want to use Running in standalone mode With in a few seconds after you plug in the power supply a welcome message should come on LCD and this means that the demo has started correctly After that you will see a series of messages coming on the LCD screen At the end you will see a blank LCD screen and you will see all the LEDs blinking These LEDs are the output of the 6 PWM outputs coming from 2 STMPE2401 devices Now the system is ready to be used Again if you find that no message is coming on the LCD after giving the power supply Remove the power supply and plugged in again and then observe You should now see the message coming on the LCD If this2. does not happen even after removing and plugged in the power supply several times you need to contact technical support PWM Output demo You can observe the PWM out on the CRO by connecting the probe at the corresponding LED output there are 6 LED available in the demo board corresponding to each PWM In stand alone mode the PWM output are pre programmed and can not be changed Keypad demo As mentioned in the Figure 10 there is a 4 x 4 normal keypad available on the demo board You can observe the key press event on the 16x2 LCD interface You can observe at most 2 simultaneous key press events For a case when you press more than 2 keys simultaneously only first 2 keys press will be detected All key press events are displayed in LCD screen 9 22 Running the STMPE2401 port expander demo board UM0300 10 22 Figure 10 Embedded 4x4 keypad Dedicated keypad demo Similar to normal Key press there are 4 dedicated keys available on the demo board as shown in Figure 11 In comparison to normal keypad where you can detect only 2 keys simultaneously here you can observe 4 dedicated keys simultaneously All dedicated key press events are displayed in LCD screen Figure 11 Dedicated keys Rotator demo The interface of Rotator is implemented in multiplexed manner with the keypad That is either you will observe any key press event on the LCD or the Rotator event The rotator is implemented using three switches as shown in Fig
3. 0 2 2 3 2 2 4 d Running the STMPE2401 port expander demo board Once we click the Write Program Button The Write mode become active if previously scanning is being done that will be stopped The write mode provides the feature of the reading the internal memory of the either slaves or to program the any PWM output Reading internal memory of STMPE2401 We can read the internal memory of particular STMPE2401 slave device by selecting that in Memory Read section from the pop menu as shown in the Figure 20 Then we can read the memory by writing the 8 bit address in the Address and then clicking Read The return data is in HEX format Figure 20 Reading internal memory of STMPE2401 PortExpander STMPE2401 File View Help a open Arrow Key Normal Key Program palala Jay uum Memory Read EJ o Al B Slave Select Slavel B D n D Address 0x02 Power Modes MEN Hibernate Sleep iakelp Write Mode Disconnected Programming PWM Any of the 6 PWM outputs coming from 2 STMPE2401 slave devices can be programmed In the Write mode section as shown in Figure 21 select the PWM to be programmed from the pop up menu and then load the correct PWM file pex by clicking the Open button Then click the Program button to program the particular PWM If the PWM file is correctly programmed the correct PWM signal can be observed on the CRO by connecting the CRO probe at the programmed LED output Any e
4. Cer UMO300 Y7 User manual Port expander STMPE2401 demonstration board Introduction This Document explains the functioning of the port expander demo board consists of the port expander IC STMPE2401 and controller ST72F63B microcontroller as IC master along with a PC GUI The objective of this demonstration board is to display to the user the features and capabilities of the port expander chip STMPE2401 using a Windows based host software application and one of several USB low speed microcontrollers ST72F63B from ST acting as a control device The host software and the ST7 source code provide a user friendly environment to use demo board in following modes e Standalone mode e PC GUI mode In both modes power to board can be provided from either USB bus itself or from external power In this demo board the ST72F63B Microcontroller acts as the I C master and controls two STMPE2401 devices functioning as DC Slaves The STMPE2401 devices are used to interface LCD normal keypad rotator controller dedicated keys and 6 PWM outputs All these interfaces are controlled by just using DC communication between master and slave devices all events like dedicated key press four direction keys keypad key press 4 x 4 keypad Rotator direction power mode etc are captured and displayed in LCD screen and in the scan window of PC GUI For visual display of the PWM output LEDs are provided on the board The capability of rotator controller h
5. NG BY AN AUTHORIZED ST REPRESENTATIVE ST PRODUCTS ARE NOT RECOMMENDED AUTHORIZED OR WARRANTED FOR USE IN MILITARY AIR CRAFT SPACE LIFE SAVING OR LIFE SUSTAINING APPLICATIONS NOR IN PRODUCTS OR SYSTEMS WHERE FAILURE OR MALFUNCTION MAY RESULT IN PERSONAL INJURY DEATH OR SEVERE PROPERTY OR ENVIRONMENTAL DAMAGE ST PRODUCTS WHICH ARE NOT SPECIFIED AS AUTOMOTIVE GRADE MAY ONLY BE USED IN AUTOMOTIVE APPLICATIONS AT USER S OWN RISK Resale of ST products with provisions different from the statements and or technical features set forth in this document shall immediately void any warranty granted by ST for the ST product or service described herein and shall not create or extend in any manner whatsoever any liability of ST ST and the ST logo are trademarks or registered trademarks of ST in various countries Information in this document supersedes and replaces all information previously supplied The ST logo is a registered trademark of STMicroelectronics All other names are the property of their respective owners 2007 STMicroelectronics All rights reserved STMicroelectronics group of companies Australia Belgium Brazil Canada China Czech Republic Finland France Germany Hong Kong India Israel Italy Japan Malaysia Malta Morocco Singapore Spain Sweden Switzerland United Kingdom United States of America www st com d 22 22
6. Scan mode by clicking the Read Scan button as highlighted in the Figure 17 Figure 17 Read Scan mode PortExpander STMPE2401 File View Help Arrow Key Normal Key Program i 2 41 Memory Read y alolals Slave Select Bee Gen Power Modes ss Hibernate Sleep take p Head Disconnected In Read Scan mode the key press dedicated key press and rotator events are visible as blinking LEDs available on the GUI These events are recorded in the scan window which allows observing past activity as shown in Figure 18 a 13 22 Running the STMPE2401 port expander demo board UM0300 Figure 18 Events in scan window PortExpander 5TMPE2401 File View Help Write Mode Right F Normal Kevpad is PressedKaevy Up File F Normal Kevpad it PressedKey Down C Normal Keypad is PressedKaevy Up C Normal Keypad is PressedKey Down Rotator Down Arrow Key 3 Program Memory Head Slave Select Address Power Modes ones Hibemate Sleep akel p Head Read Mode Disconnected 2 2 2 Write program mode You can enter in to this mode by clicking Write Program button as highlighted in Figure 19 Figure 19 Write program mode PortExpander STMPE 401 File View Help c Scan Write Mode File Arrow Key Progam Memory Head Slave Select Address Power Modes zs Hibernate Sleep akel p Read Write Mode Disconnected 14 22 UMO30
7. Shield Wizard Setup Status PortE spander 5 T PE 401 Setup is performing the requested operations InstallShield Cancel e Step 5 Figure 5 Installation complete InstallShield Wizard InstallShield Wizard Complete Setup has finished installing PortEspander 5T MPE 2401 on Your Computer After you click the Finish Button you will find that the software is installed in the directory you selected or in the default directory Also you will find the shortcut of this software also available in you START menu This user manual is also available in the same directory SZA 6 22 UM0300 Getting started 1 4 Hardware installation Figure 6 below shows the snapshot of the demonstration board Figure 6 Port expander demo board LiL 5 d em CO TC eenoog gi 4 y A LI arene a e Ae ua e ed paaa A md L r BL e MH maj E 1 annman EI Lor uda s i eis 1 4 1 Power supply The demo board can directly be powered by the USB Connector Bus powered Or you can use an external power supply The external power supply should be getting minimum supply of 7 V 1 A and maximum power supply of 12 V 1 A 1 4 2 Jumper settings There are four jumpers JP1 JP2 JP3 and JP4 are available on the board The correct connections of these connectors are necessary for the proper functioning of the demo board e JP1 and JP2 JP1 and JP2 are the connectors which are used to sel
8. and SDA lines available in jumper J1 For controlling the Interrupt line use PA4 for INT1 Slave1 interrupt line and use PA5 for INT2 Slave 2 interrupt line After you have done the required operations remove all the connections as mentioned in steps 2 3 and 4 Now connect the make the DC connections Jumper JP1 and JP2 again Heconnect the RESET button on the demo board to put demo back in action In this mode PC GUI will not be available for the external user to use Again you have to use the slave address as specified in the demo which is O x 84 for Slave1 and 0x86 for Slave2 Again this I C lines are working at 5 V power supply so external PC Master should use 5 V power supply a UM0300 Appendix PURT EXPANDER 2401 USBVDD USBIM USEIP VSSA Za LI IER USEDH Ri USBVCC USBIH iw USBVCC 1KS ICCIATA Ppa fj Spa RE 4k7 L 20008 p ehe su Wm Ai VDD H 3 Pe USC EXT SCOUT USCIN VSS Pte PATI PCO RDI RESET PR VIDA USEYCC USBDH USBDP VSSA PAD MCU PALSDA ICCDATA NC NC 27 26 PAL Be 24 e Xen Fe F6 vs I9 PWM EA L4 PWM lA DNH cation diagram PVM IB Ry Ik Puw em Rit Ik PwH 3B RIG Ik App
9. as been demonstrated by mechanically implementing the rotator configuration using switches For interfacing with the PC GUI the application layer is built above the USB core library that makes all the hardware control of the USB interface transparent for the developers The PC GUI supports various power saving modes of port expander and wake up feature to get back to default operational mode In addition the board has the provision for an alternate GC path for external control Also the board has ICC connector to re program the ST7 Microcontroller flash memory March 2007 Rev2 1 22 www st com Contents UM0300 Contents 1 Geling SIINO EE 4 1 1 System requirements eee eas 4 1 2 Package contents ococccco aa 4 1 3 Software installation us ck NN K IER ex duck eu ede ee oD Ree De Da nG 4 1 4 Hardware installation 7 1 4 1 Bee leie TEE 7 1 4 2 JUMPER SOIMAOS mes xw qd gua ed dou bea ds dr hh EE ae 7 2 Running the STMPE2401 port expander demo board 9 2 1 Running in standalone mode a 9 2 1 1 PWM Output demo 9 2 1 2 Keypad demo WEEN 9 2 1 3 Dedicated keypad demo leeren 10 2 1 4 ROlato raso 25095 once es AE heb et ean BANANA adss esa 10 2 2 Running in PC GUI mode uu ac dado od 13 A n do AT 11 2 2 1 Read Scan mode 13 2 2 2 Write program mode 14 2 2 3 Reading internal memory of STMPE2401 les 15 2 2 4 Programming PWM 15 2 2 5 Power dow
10. ase read the following license agreement carefully Press the PAGE DOWN key to see the rest of the agreement SOFTWARE LICENSE AGREEMENT 1 IMPORTANT Before loading this software you have ta carefully read and agree to the following terms and conditions which will be then automatically agreed on by loading this Software or any portion thereof IF you do not agree to the terme of this Agreement do not install or use this software or any portion thereat 2 LICENSE GRANT Do you accept all the terms of the preceding License Agreement IF you choose No the setup will close To install PortExpander T MPE 2401 you must accept this agreement Step 3 Please select the folder in which you want to install the software By default it will install the software in the following path C Program Files STMicroelectronics PortExpanderS TMPE2401 Figure 3 Destination folder InstallShield Wizard Choose Destination Location Select folder where Setup will install files Setup will install PortE pander 5T MPE 2401 in the following folder To install to this folder click Nest To install to a different Folder click Browse and select another folder Destination Folder CAST Microelectronics sPortE vpander T MPE 2407 Browse Cancel d 5 22 Getting started UM0300 Step 4 After you select the folder and click the next button it will start installing the software Figure 4 Installation ongoing Install
11. ect between the I C lines and ICC lines for programming the ST7 microcontroller as shown in the Figure 7 below Figure 7 JP1 and JP2 Settings ele 3p1 I2C ICC mje el ky 7 22 Getting started UM0300 8 22 These Jumpers allow the selection between ICC or DC data lines While we do the programming the ST7 microcontroller the jumpers must be connected on ICC side right side and when the board is used for demonstration the jumpers must be connected on the 12C side left side e JP3 As shown in the Figure 8 below JP3 is used to select the clock source for the ST7 microcontroller Figure 8 JP3 Settings JH EXT ICC The default connection of this jumper is EXT side Left Side that is clock source external crystal resonator and when the board is used for demonstration You need to connect to ICC side Right Side only if it is must to provide the ICC clock to the microcontroller during the re programming microcontroller e JP4 As shown in the Figure 9 below JP4 is used for choosing power supply to be used for USB supply or the external board supply Figure 9 JP4 Settings JP4 EXT USE Connect the jumper to the Left side whenever you want to use external power supply and to Right side USB side whenever you want to use USB supply There is no restriction as such on using any of the power supply You can use external power supply when you want to use the demo board in the stand alone mode
12. erable part Supplier s Value generic ordering Reference part number B lt Any C6 C7 C8 C9 C10 C11 C12 C13 C14 C15 C16 C21 C22 13 Any Any Any Any Any Any HEADER 4 DH KAC EJES EBE 19 22 Application diagram UM0300 Table 1 Bill of materials continued Manufacturer s Value generic ordering code Suppliers Qty Reference Package ordering part number orderable part code number J5 J6 J7 J8 J9 J10 CONS POWER E a tala I lala coo 5 m o Cw pepeumeeme ce or law ll ell mmm em ussm Am ht KC AO PWM3 PWM6 PWM6 YELLOWLED LED LED 3 mm 3 LED 3 mm NL Q2 Q3 Q4 Q5 0805 20 EN H7 R9 R10 R13 220E 0805 H16 R5 R8 R11 R12 21 H14 R15 R44 R45 0805 H46 m mnes e e mage ej CDAS oom aw elen o fe fo bl R2 nn R4 0805 sses e aci Cm a reren as we law lalu eme sora sr oman o e em me ro sr messe Lm 2 es see mem sr mem eil ow men ww s puer ell mmer mem w umm HT RI E A 12 MH XTAL 3 3 SWITCH Push Button ROT C S1 S2 s3 20 22 Ayr UM0300 Revision history 4 Revision history Table 2 Revision history CC Gaga 26 Mar 2007 Table 1 Bill of materials insertion a 21 22 UM0300 Please Read Carefully Information in this document is provided solely in connection with ST products STMicroelect
13. esponding message appears on the LCD screen as well In Hibernate mode as the clock to PWM is stopped output LEDs stop blinking While in sleep mode PWM keeps running as these are controlled by the 32 KHz clock In order to wake up the demo in low power mode click the Wake Up button A message in the Scan Window appears as soon as the demo comes out of the power down mode as shown in Figure 23 You can also wake up the demo from the sleep mode by clicking any normal key or dedicated key available on the demo board Figure 23 Wake up from hibernate mode PortExpander STMPE2401 File View Help E A e Write Mode Host is in Wake up mode Hast is in Hibernate Mode File Beie ae Arrow Kep Normal Key HMMA Program 3 2 31 un Memory Read El 3 Al D Slave Select um B B B Bl Address Power Modes MEN Hibernate Sleep Read Write Mode Disconnected a 17 22 Using the external I2C master UM0300 3 18 22 Using the external IC master We can also use an external IC Master by using pins available on J1 connector as shown in the Figure 24 below Figure 24 External I C connector To control the STMPE2401 devices using the external masters do the following steps 1 2 6 Set the demo board to run mode as explained earlier Remove the 1 C connections from jumper JP1 and JP2 This is required to avoid any conflict due to IC operations done by the demo itself Connect the SCL
14. f STMPE2401 es 15 Programming STMPE2401 DM 16 Entering in hibernate mode 17 Wake up from hibernate mode 17 External EC connector ree 18 3 22 Getting started UM0300 1 1 1 2 1 3 4 22 Getting started System requirements In order to use the port expander demonstration board with the Windows operating system a recent version of Windows such as Windows 2000 or Windows XP must be installed on the PC The version of the Windows OS installed on your PC may be determined by clicking on the System icon in the control panel Package contents The port expander demo board includes the following items Hardware content One demonstration board e Software content PC executable software PE 2401 GUI to be used along with demo board e Documentation User manual Software installation To install the PC GUI software follow the step as mentioned below e Step1 As soon as the user clicks the portexpander exe Icon the following window appears Figure 1 Installation window InstallShield Wizard Welcome to the InstallShield Wizard for PortExpander 5 TMPE 2401 The InstallShield Wizard will install Pott spander STMPE2401 on your computer To continue click Nest i Cancel a UM0300 Getting started e Step 2 Read the license file and click the Yes button if you accept the license Figure2 License window InstallShield Wizard License Agreement Ple
15. lication diagram STRIEIS RO em 05 XTRIPIS punta RR ik PVM 2A E k Pwn 3a RE Ik RIO 220E 03 XTRAS R16 53 06 TRIALS PRE PAG SEL ICECLK VPP PRS PM PR4 PAS PRO PAG PRE PAT PBI PRO ST7263B DNA PWN A va US VL VCC a M VEC Mi VO moa LL WU Voce VIE Cy VB Me Em VL3 N E le ar ss a ME YS M VO Vl4 VE v4 WI M3 VG Sv NG VECE VLE arar NEE VL M W I CA ss vii A NOs VB e an M I VE GND E ND DE ST2378E HEES iva R36 20 NB s Zi YSB JHDI62A D PMM IB 44 U7 k 17805 221 a0 Lire L Wf Aly 330nF Tv8 Hon GIOUN 100nF ICCDATA 34 ICCCLK Bk lt RESET ADIROR vec lt q GE SW OSC_EXT n HEADER SKE US Table 1 Bill of materials Manufacturer s ordering code ord
16. n mode 16 3 Using the external IC master 000 cee cece eee eee eee ees 18 4 REVISION history cae oii he eee kom RR ee eee oe eee NG 21 2 22 Ayr UM0300 List of figures List of figures Figure 1 Figure 2 Figure 3 Figure 4 Figure 5 Figure 6 Figure 7 Figure 8 Figure 9 Figure 10 Figure 11 Figure 12 Figure 13 Figure 14 Figure 15 Figure 16 Figure 17 Figure 18 Figure 19 Figure 20 Figure 21 Figure 22 Figure 23 Figure 24 d lasi EN AA AP PEE 4 License WINDOW Aa O 5 Desnnalon TOlDEN s 2 aid ure Rose Ru saa ora trader AANO E NG DALAG 5 Installalon ONGOING sessi acted um go Rw DL a ae vas Sl RC RR BNE tae tn dci 6 Installation CoripIBles a3 naaa 0 8 Aen e Ro dE RC ie di eic ane ded doin ier ERR ada a es 6 Port expander demo board 7 JP anaes SEN Kana id a dedos KA m ono rare 7 SERIES ge AA T ee eae wee ae bee aoe 8 lu ie ngo TC RT T L rrr 8 Embedded 4x4 keypad 10 Dedicated ii TMMRTRYT 10 alcusdn mect e 11 SEET e eege ee Re a dor e d 11 STMPE240 PO GUL ege Ba nG PAR ote OR Bed CHR EE dod dee old di qoe 12 Message for board not connect 0 ce eee eens 12 Message for board connect 12 MEAG CON MONG EE a a e densas dd 13 Events IN scan WIDOOW E EELSTEN e a a a a Row te oe 14 WIlte prograMMOde ca mam NA KABAN ap rad aa ae 14 Reading internal memory o
17. onstration board This PC software is used to issue various commands and to control data transfer between the PC and the ST7 peripheral 11 22 Running the STMPE2401 port expander demo board UM0300 12 22 Figure 14 STMPE2401 PC GUI PortExpander 5TMPE2401 File View Help adv scan Window Connection Check Arrow Kay LINT dien Memory Head Slave Select Address Power Modes MEN Hibernate Sleep akel p Head Disconnected Again as you can see in the Figure 14 you can check whether the board is connected to the board or not by clicking the connection check button If the board is not connected then you will see the following message Figure 15 Message for board not connect PortExpanderGUI Ed WI j Board is not connected to PC And if board is connected then following message will appear Figure 16 Message for board connect PortExpanderGUl E4 A 1 Board is Connected to PC Once this is done the PC GUI is properly connected to the demo board and ready to be used SZA UM0300 Running the STMPE2401 port expander demo board Now there are two modes operation in which GUI operates e Read Scan mode e Write Program mode In addition to these two modes there are 2 power down options available in the GUI to put STMPE2401 in power down modes Again there is a RESET option available which can put the demo back in default settings 2 2 1 Read Scan mode You can enter in to the Read
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19. rror for example a PWM programmed with a faulty program causes the particular PWM LED to stop blinking 15 22 Running the STMPE2401 port expander demo board UM0300 2 2 5 16 22 Figure 21 Programming STMPE2401 PWM PortExpander STMPE 401 File View Help Write Mode File Er open C temotion pex Arrow Key Normal Kay DAM Program fe pea pe o e amp slave Select sl EE Power Modes MEN Hibernate Sleep wakeUp Head Write Mode Disconnected Again if you click the RESET button then demo will be put in the default settings and all the PWM will start running with the default program loaded in to their memory Power down mode There are 2 power down modes as mentioned below Hibernate mode e Sleep mode The STMPE2401 slave devices can be put in to Hibernate mode or sleep mode by clicking corresponding button available on the GUI For e g as shown in the Figure 22 if we click Hibernate button the device will be STMPE2401 device will be put in the hibernate mode UM0300 Running the STMPE2401 port expander demo board Figure 22 Entering in hibernate mode PortExpander 5TMPE 401 File View Help E C2 Wl Scan Window Write Mode Host is in Hibernate Mode File zu open encore o Arrow Kep Normal Key Pull E Program 142131 4 Memory Head TEE EE ESI a Slave Select comi EE CIE Power Modes Write Mode Disconnected A sleep mode is also available A corr
20. ure 12 d UMO300 2 2 d Running the STMPE2401 port expander demo board Figure 12 Rotator interface To use rotator you have to press the 2 keys simultaneously and follow the instruction as mentioned in the datasheet For the first 2 events you will not see any reaction but from then onwards you will the status on the LCD Running in PC GUI mode In GUI mode in addition to the functionalities mentioned in the above section PC GUI is also available For running the GUI the demo board must first be connected to the PC with the USB cable and then provide the power supply to the demo As a result you should find the demo board enumerated as a HID device as shown Figure 13 and then board will be ready to use if this message does not come contact the technical support Figure 13 Enumeration result E Device Manager Action view pLHCMGPC6173 o EN Computer bs Disk drives S Display adapters Hy DVDICD ROM drives H Floppy disk controllers H E Floppy disk drives EI Human Interface Devices i Se 83 USB Human Interface Device H IDE ATA ATAPI controllers H E Keyboards Els Mice and other pointing devices H Monitors e B Network adapters Y Other devices El 4 Ports COM amp LPT ch Sound video and game controllers H A System devices ER Universal Serial Bus controllers By starting the STMPE2401 PC GUI on the PC you will see a graphical interface Figure 14 for controlling the dem
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