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PIC Overview ELG4911

Outline. Introduction to PICDeveloping code for PICMPLAB IDEProject CreationUpdating Source CodeBuilding ProjectsProgramming the PICReferences: www.microchip.com. Introduction to PIC: Peripheral Interconnect Microcontrollers. Basically meant to develop and run ASM programsMore than One b

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PIC Overview ELG4911

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    1. PIC Overview ELG4911 Raymond Peterkin Edited by: Misbah Islam

    2. Outline Introduction to PIC Developing code for PIC MPLAB IDE Project Creation Updating Source Code Building Projects Programming the PIC References: www.microchip.com

    3. Introduction to PIC: Peripheral Interconnect Microcontrollers Basically meant to develop and run ASM programs More than One billion 8bit processors have been sold 8 Bit Family PIC10, PIC12, PIC14, PIC16, PIC 18 < $20 , Memory 8K-256 K, 48 MHz, 6-100 Pins PIC 18 Features: 9-Ports, 80 pins, Parallel I/O, PWM, 10bit ADC, USART, CAN, Timers On chip memory 64KB, External Off-chip 2 MB (EMI uses 38 pins) 16 Bit family (ASM, C) PIC24, PIC32

    4. ASM and C To run C you need cross compilers MPLAB with Lite-C or MCC18 compilers need models PIC18 and over With commercial systems, e.g. CCS and Hi-TECH you can compile C programs on all models http://ww1.microchip.com/downloads/en/DeviceDoc/51025e.pdf (pp.44) Code Examples: http://microchip.com/stellent/idcplg?IdcService=SS_GET_PAGE&nodeId=1408 http://microchip.com/stellent/idcplg?IdcService=SS_GET_PAGE&nodeId=2623 http://ww1.microchip.com/downloads/en/DeviceDoc/51519B.pdf

    5. Developing Code for PIC, ASM example MPLAB IDE: Free integrated development environment (IDE) from Microchip to implement code for PICs Latest version 8.0 (recommended), In Lab 7.6 IDE and documentation (user guide) can be downloaded from the Microchip website

    6. What are these? IDE: Integrated Development Environment Software package that lets you assemble, compile, link, export and debug programs. ICE: In Circuit Emulator: Hardware that allows you to test the developed programs on non-real (emulated) hardware. To test ICE you need IDE Programmer: Is a piece of hardware, e.g. PICkit 2, PM3 that allow the export of executable .hex files (load) files to the PIC processor’s memory directly. It is driven by the IDE.

    7. MPLAB IDE Projects A project must be created for implementation Specify your device Create and edit your files Compile and link your project Program the device To create a project Project?Project Wizard…

    8. MPLAB IDE Project Creation (1/4)

    9. MPLAB IDE Project Creation (2/4)

    10. MPLAB IDE Project Creation (3/4)

    11. MPLAB IDE Project Creation (4/4)

    12. Updating Source Code Modify .asm files Under ‘Source Files’ folder in project window Open and edit files to implement new functionality Additional files can be created and added

    13. Building a Project Project?Build All (or Ctrl+F10) Output window indicates success or failure HEX file generated when project is built Used to program the device

    14. Programming the PIC Directly Downloading Hex files to the PIC Memory Used to transfer HEX file to the PIC and begin program execution Two methods (HEX file must be generated) MPLAB IDE Programmer?Select Programmer?PICKit2 PICkit2 Separate program Start?All Programs?Microchip?PICkit 2 v2.11

    15. Option a.Programming PIC with MPLAB IDE (1/3) Connect PIC to computer through PICkit2 Hardware Select the PICkit 2 from the Programmer menu Programmer?Select Programmer ?PICkit 2

    16. Programming PIC with MPLAB IDE (2/3) New ‘PICkit’ 2 tab appears in the output window New options appear in the Programmer menu and tool bar

    17. Programming PIC with MPLAB IDE (3/3) Transfer HEX file to PIC Programmer?Program

    18. Option b. Programming PIC with PICkit 2 (1/2) Connect PIC to computer through PICkit2 Start PICkit2 programmer software Start?Programs?Microchip?PICkit2 v 2.40 Device is listed PIC is detected

    19. Programming PIC with PICkit 2 (2/2) Import HEX file File?Import Hex Transfer HEX file to PIC Click ‘Write’ button Memory contents are updated with new program

    20. References Microchip website www.microchip.com Main source of information with several documents MPLAB IDE User’s Guide (under MPLAB IDE description) Chapters 2 and 3 contain tutorials, page 44 http://ww1.microchip.com/downloads/en/DeviceDoc/51025e.pdf Good Tutorial: p 45 summary http://ww1.microchip.com/downloads/en/DeviceDoc/51519B.pdf PICkit 2 Microcontroller Programmer User’s Guide PIC data sheets

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