USER'S MANUAL PICEBS2
Contents
1. PIC18F87K22 0 64MHz 3 3V 65kWord instruction 4 kbytes RAM 1024 bytes EEPROM 24 A D 12 bits SPI I2C UART 6 Timers External CAN interface MCP2515 Connectivity 1 x Serial RS 232 1 x CAN 1 2 2 0A 2 0B compatible v O eee eee ere reer rere rr rrr rrr rer rrr rrr rrr verti rrr terre TEE TEE TETE Hes so Valais ISI sap version 1 0 PICEBS2 User s manualPICEBS2 3 10 1 x PS2 keyboard 1 x Olimex UEXT standard 3x Buttons 10 x user LEDs 3 x bicolor LED 1 x Extension 17 IO individually connectable quasi any CPU pin 1 x Full CPU connection 72 pins 1 x PICKIT3 debugger connector 2 HARDWARE 2 1 The USB power supply Figure 2 Micro USB connector Power supply input is a 5V micro USB connector Current of 250mA will be sufficient for operation without extensions The maximal current available on the 3 3V extension connector is about 1 ampere Be careful in this case of the limited current of a USB host PC connector 500mA 2 2 The USB debug connection onboard PICKIT3 To communicate with this board we use the onboard PICKIT3 This feature offers the ability to interact directly between the microcontroller and the PC through the USB TTT TTT TT TTT TTT Hes so Valais ISI sap version 1 0 PICEBS2 User s manualPICEBS2 4 10 2 2 1 Onboard system selector There are three board functions available e Debug e Power only e PICKIT3 only Mode select Figure2. On the right of the PICEBS2 board is one extension connector This is useful to integrate any new system on this board and to use the already existing extension modules Figure 12 Extension connector The user can bind any I O extension pin with most of the microcontroller pin The table below describes the extension pinout Some of the extension pin are fixed by the Hes so Valais standard Pin number Descripton Pin number Description TTT TTT TT TTT TTT Hes so Valais ISI sap version 1 0 PICEBS2 User s manualPICEBS2 9 10 Table 2 Extension connector pinout 3 SOFTWARE A lot of functions are available to use any part of this board e LCD e Touchscreen e CAN e Keyboard All of these libraries could be requested to the laboratory responsible pascal sartoretti hevs ch PTT eee rere rrr rrr rrr re rrr rrr rrr rrr rer errr errr reer errr SJ Hes so Valais ISI sap version 1 0 PICEBS2 User s manualPICEBS2 10 10
3. 3 System function selector To debug with this board the selector has to be placed on the top position In this case the PICKIT3 communicate with the PIC18F87K22 onboard processor To have a standalone board without debug the selector has to be placed in the middle position In this case the PICKITS is not powered To used only the PICKIT3 with an external CPU board the selector ha to be placed at the bottom position In this case the PICEBS2 processor and parts are not powered and the PICKIT3 output connector is available Figure 4 External PICKIT3 connector PTT reer rere rrr rrr rrr re rrr rrr rrr rrr re rrrrrrrrr rrr rere Hes so Valais ISI sap version 1 0 PICEBS2 User s manualPICEBS2 5 10 2 3 The reset button and power LED On the left of the PIC18F87K22 CPU is a reset button Just above is a green power led to indicate when the PICEBS2 is powered ART s NI Figure 5 Reset button amp power led 2 4 The LCD screen On the center of the PICEBS2 board is a graphical color LCD screen with a resolution of 320x240 pixels This LCD has a backlight and a touchscreen PICEBS 2 Hes so School of Engineering Bd Figure 6 LCD screen To use this screen you can directly use the existing libraries or implement yours based on the LCD datasheet 2 5 The Buttons and the LEDs Under the LCD are three user buttons available These buttons contains bicolor leds red green depending on the chos
4. PICEBS2 sap hevs ch TTT TTT TTT Hes so Valais ISI sap version 1 0 PICEBS2 1 10 TABLE OF CONTENTS 1 INTRODUCTION iiit ainiai ii i i i ij i i i i ae ij rate 3 2 HARDWARE rius Aina ace ira iai a i i aaa Dia o Aa i Te a a 4 2 1 The USB power SUD ane akiai as ai ius aa ai si Aa a tub sb eats 4 2 2 The USB debug connection onboard PICKIT8 as 4 2251 Qnboara SVstem Selector cca a i adi ne a 5 2 3 The reset button and power LED 6 2 MEM IEEE ea anna i i i a i ot S a a 6 2 5 IneButtons And Ne LE DS ais e iii i ave i ij a a i dE 6 26 TR CAN DUS erreren ne i a red a a a r i a a d zd tu 7 2 Ne hS252 IBIEMdC ntm abr ers arnis dise 7 Zo EN 0 8 n dS zone m 8 20 VRE PZ KEV OO AIG ae ainai 9 210 She ExtensiorconecloISsssutherudedtesedut tameu E eco Usa a o et 9 3 SOFTWARE mb nues 10 eee ere eer rere errr rr rrr rrr re rrr ere rrr rrr rer rr rrr rrr rrr terres Hes so Valais ISI sap version 1 0 PICEBS2 User s manualPICEBS2 2 10 1 INTRODUCTION The laboratory has developed a simple Microchip development board This board is called PICEBS2 The PICEBS2 board was developed to have a more powerful and in fact a little more complex board to be up to date with current processors and interfaces TTT ET PICEBS 2 mr Ci 5 ai A Figure 1 The PICEBS2 v 1 2 board This document intends to explain in details the functionalities of this board 1 1 FEATURES
5. en polarity On the left is a bar graph with 10 individual red leds Pee eee errr reer EEE TE EEE EEE rer EE ETS ET ECS ECTS rrr terre rrerrrrrrr sy Hes so Valais ISI sap version 1 0 PICEBS2 User s manualPICEBS2 6 10 r IE uem pu g i s 17 E E E E E E E Figure 7 User buttons and leds 2 6 The CAN bus On the right part of the board is a RJ 45 CAN connector It includes the CAN termination resistor Figure 8 CAN connector 2 7 The RS 232 interface On the left of the board is an UART DB 9 female connector This connector can be directly connected with a PC DCE equipment eesesecooocesocosocecosesooocooeccososoesoosososososeoososeseoo Hes so Valais ISI sap version 1 0 PICEBS2 User s manualPICEBS2 7 10 Table 1 Serial port O pinning The connections used on this interface are RX TX and GND There is no hardware handshake implemented 2 8 The Olimex UEXT connector On the top of the PICEBS2 board is a 10 pins connector called Olimex UEXT This connector offers a standard connector for olimex modules or others Figure 10 Olimex UEXT connector K L Hes so Valais ISI sap version 1 0 PICEBS2 User s manualPICEBS2 8 10 TTT TTT TT TTT TTT 29 The PS2 keyboard On the bottom right of the PICEBS2 board is a RJ 12 connector This offers the ability to connect a PS2 keyboard Figure 11 PS2 keyboard connector 2 10 The Extension connectors
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