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+ PIC Code in C (55)

+ PIC16Fx code in C (2)

PIC16F87x bootloader

CRC routines in C

EEPROM, I2C, A/D, D/A

+ PIC18Fx code in C (2)

PIC18Fx52 bootloader

CRC routines in C

EEPROM, I2C, A/D, D/A

+ dsPIC30Fx code in C (2)

CRC routines in C

Pulse Monitor Project

Triac Controller Project

PIC12C509 logic gate

Phase Controller Project

Dallas DS1821 Thermostat

Samsung KS0713 driver code

... and 40 other example projects

+ PIC C FAQ (68)

Commonly used features?

How to find suppliers?

How to research?

Available datatypes?

Available datatypes?

Switch bits on and off?

Test bits in a variable?

Divide or multiply by two?

Inline code for functions?

How do I use interrupts?

Speed up interrupts?

Timing exact intervals?

Delay routines?

Measure the time code takes?

How do I reset the micro?

... the other 50 questions

+ PIC bootloaders (5)

Universal PIC bootloader

+ PIC16F87x bootloader

Troubleshooting

User Testimonials

PIC18F1320 bootloader

+ PIC18x52 bootloader

dsPIC bootloader

+ PIC Articles (3)

Hi-Tech C Speed Optimization

Hi-Tech C Multitasking

Solderless RS232 Crossover

Hi-Tech C PICC16

Hi-Tech C PICC18

Peter Andersons Library

PIC18 Compiler Comparison

PICALL programmer

+ UVa tutorial (2)

News

15th November 2009. Currently in the process of researching and adding additional PIC source code and reviews to this website.

28th September 2009. Added the ds30 Loader, a universal PIC bootloader that supports almost every PIC micro, including PIC18F, PIC24F, dsPIC30 and dsPIC33.

1st April 2009. Updated links to Portmon, one of the most amazing little utilities to monitor RS232 serial communications occurring in the background. Checked other links.

23rd February 2009. Updated the PIC18F4550 USB serial port to be compatible with Hi-Tech C v9.51PL3.

10th January 2009. The PIC18Fx bootloader source code is now freely downloadable.This source code was previously sold for a fee.

8th December 2008. Added the UVa Online Judge tutorial and MinGW tutorial.

10th November 2008. Added a link to www.datasheetdir.com. This website has thousands of datasheets, and is maintained by an engineer that has spent 3 years collecting datasheets as a service to the engineering community.

23rd July 2008. HI-TECH Software has released the new PRO ANSI C compiler for Microchip’s PIC32 MCU Family. Supports Omniscient Code Generation™. For more details visit the PIC32 compiler product web page.

14th May 2008. Added InnoSetupAV v1.00, a sample installer script for any Windows based support programs for any embedded work.

13th May 2008. Fixed some broken links in the sourcecode page, unlocking some source code that wasn't previous accessible.

15th April 2008. Free HI-TECH Software PIC32 compiler: time limited offer. See Hi-Tech C compiler offer.

3rd April 2008. HI-TECH C® PRO released for the PIC10/12/16 MCU Family, with Omniscient Code Generation, supporting the PIC10/12/16 MCU Family.

Details, see the product forum post.

21st February 2008. Release Candidate Testing: HI-TECH Software’s PICC-18 PRO v9.62.

12th February 2008. Beta Release: HI-TECH C PRO for the PIC32 MCU Family. Nearly 50 volunteer testers will, effective week commencing 11 February, put the beta release of HI-TECH C PRO for the PIC32 MCU Family ANSI C compiler through its paces.

9th January 2008. Added tiny threads example project.

8th January 2008 . Added interrupt driven UART for PIC16x.

3rd January 2008. Added link to MiniBasic - includes a complete library of example peripheral source code in C, for PIC18, PIC24, PIC32.

30th November 2007. Updated PIC18F4550 example - a Virtual Comm Port (VCP) over USB.

7th November 2007. Microchip has released the PIC32, based on a MIPS core. The "PIC32 Linux challenge" has been laid down, to fit uClinux or Linux into a PIC micro.

22nd August 2007. Added PIC JoyStick I/O demonstration project.

22nd August 2007. Added PIC18LF4550 plus LCD plus temperature sensor sample project.

25th July 2007. About to increase site source code by 20%, together with upgraded the sample source code the latest PIC and dsPIC micros. Check back later ...

8th June 2007. Added data type header for Hi-Tech C. Makes handling of data in Hi-Tech C easier.

4th June 2007. Corrected the delay routines for the PIC18Fx core.

22th January 2007. Added dsPIC bootloader. This bootloader has auto-baud rate detection, and works with any dsPIC via a configurable XML file.

17th January 2007. Added PIC18F1320 bootloader.

17th January 2007. Added Samsung KS0713 Graphical LCD Driver project for the PIC or dsPIC.

16th January 2007. Added dsPIC30Fx source code in C for C30 compiler.

12th January 2007. Revamped site navigation to add side tabs.

7th October 2006. Planned site revamp is underway.

7th August 2006. Updated some minor documentation regarding the bootloader.

24th Dec 2005. PIC16F87x and PIC16F87xA bootloader v9.50 released. Added PICC-LITE compatibility. Many thanks to Nozomu Muto.

27th August 2005. PIC16F87x and PIC16F87xA bootloader v9.40 released. This is an extremely critical update - read the notes in the release file.

7th July. PIC18Fx and PIC16Fx delay routines updated.

11th June 2005. PIC18F4550 USB RS232 COMx source code updated with install instructions.

19th April 2005. Utility to generate LCD dot matrix drivers. See LCD source code

19th March 2005. Plug your PIC18F4550 into your USB port, and send RS232 characters via a virtual COM port. See source code.

View older news.

11 Nov 1999 Uploaded first
version of this site to the web.

PIC Sample Code in C

Brief Site Map

C sample source for the PIC micro (55 sample projects).

PIC C FAQ (Frequently Asked Questions) page (85 questions).

ds30 Loader, a universal PIC bootloader.

dsPIC bootloader.

PIC18Fx52 bootloader.

PIC18F1320 bootloader.

PIC16F876A or PIC16F877A bootloader.

Speed/size optimization tips for C on a PIC micro.

... and much, much more!

PIC C Sample Code

A huge amount of PIC sample code in C, over 55 projects. Browse the PIC C sample code archive here.

Frequently Asked Questions for Hi-Tech C

Hi-Tech C Frequently Asked Questions with the 65 most commonly asked questions about Hi-Tech C.

ds30 Loader

Universal PIC bootloader for the PIC18F, PIC24F, PIC24H, dsPIC30F and dsPIC33F from Microchip. 100% open source. View the ds30 Loader.

16F876A or PIC16F877A bootloader

Download a program into your PIC micro, in-circuit, within seconds via a serial link. Browse to Shane Tolmies 16F87xA bootloader.

18F1320 bootloader

Download a program into your PIC micro, in-circuit, within seconds via a serial link. Browse to 18F1320 bootloader.

18Fx52 bootloader

Download a program into your PIC micro, in-circuit, within seconds via a serial link. Browse to Shane Tolmies 18Fx52 bootloader.

dsPIC bootloader

Download a program into your dsPIC, in-circuit, within seconds via a serial link. This bootloader has auto-baud rate detection, and works with any dsPIC via a configurable XML file. Browse to Ingenia dsPIC bootloader.

Featured Articles

Review of CCS C, one of the compilers for the PIC micro.
Review of Hi-Tech C for PIC18x, one of the compilers for the PIC micro.
18Fxxx tutorial with quick start, everything you need to get started on this platform.
Tool setup tips, optimization tips for C, and much more. A huge 7.6Mb .pdf file - highly recommended. Read.
How to have four PIC16F87x chips on one RS232 bus.
"How do I integrate MPLab and an editor such as UltraEdit?".
"How do I measure an unknown resistor without using an A/D port?".
"Why do I need a common ground point for mixed analogue/digital circuits?".
"If I had to condense 3 years of PIC micro experience into one page, what would I say?".
A technique thats resulted in development time shortened by 20% and bugs reduced by 10%. Read.
Discussion on the most technically superior way of compiling files under Hi-Tech C. Read.

18Fxxx Tutorial

Hello Shane,

Saw your bootloader page (WorkingTex) on Sunday, wired the max232 circuit Monday morning at 09:00 AM and had downloaded my first program into an 'F876 by 09:15!!! By the end of the day, I came to realize that this is by far one of the best time savers I've come across in the last 5 years!
Thanks for an extremely detailed description and once again, thank you for making Petr Kolomaznik's small and powerful bootloader available.

Fritz Braun Jr.
Melbourne, Fl USA
www.bellsouth.net

Everything you need to know to get started using the 18Fxxx micros with C. Optimization tips, tool setup, and more.

Hi-Tech C Speed Optimization

Optimizing your code for speed and small size in loops in Hi-Tech C. See Hi-Tech C speed optimization tips.

Reviews

Review of CCS C, one of the compilers for the PIC micro.
Review of Hi-Tech C for PIC18x, one of the compilers for the PIC micro.
Over 19,000 lines of C sample code for the PIC micro, with 95 projects. Review of Peter Andersons PIC C library.
Review of Hi-Tech C for PIC12x, PIC16x, one of the compilers for the PIC micro.

"Thanks, you got me up and running quickly!"

- Sam Douglas.

Hi-Tech C Micellaneous

How to do simple but powerful multitasking with Hi-Tech C. With tutorial and source code.
How to use a serial link for debugging. See serial debugging.

C Links

PORTMON to monitor serial RS232 and/or LPT comms between other programs. W95/98/NT/2K. Hooks into operating system to give background monitoring of any comms on any port.

Hone your C programming skills with the UVa Online Judge. If you are using Windows, you can use the MinGW Windows tutorial to help prepare programs.
www.datasheetdir.com. This website has thousands of datasheets, and is maintained by an engineer that has spent 3 years collecting datasheets as a service to the engineering community.
MiniBasic for PIC32 and PIC18. The source code is open, and written in C, so that you can use it to work out how to talk to virtually any peripheral on a PIC18, PIC24, or PIC32. Ported originally from ARM source code. Download from www.pic32.org/minibasic/.
PICmicro webring with lots of PIC micro links.
The best Real Time Operating System (RTOS) for the PIC - Salvo from www.pumpkininc.com.
Hi-Tech C source code for interfacing to a USB device.
http://www.beyondlogic.org/usbnutshell/usb7.htm#PIC16F876Example
BlitzLogic, for a few bits of sample C code and circuits.
Peter Andersons home page http://www.phanderson.com/PIC/
- My review of Peter Andersons PIC C library.
  Library of PIC micro C code, see http://www.phanderson.com/PIC/PICC/index.html
- Items available from Peter Andersons zShop on Amazon.com. See here.
Ken Boaks page added covers PICs and telephone circuitry. He has upcoming routines for simple DTMF dial out, V23 transmission, dial tone sensing, dial tone regeneration, audio sample record/replay using a 16F877 and 128Kx 8 SRAM, V23 reception in C on a 16F877, and DTMF reception in firmware on a '877 running at >16MHz. Read.
Lots of PIC code in C. http://www.piclist.com/techref/microchip/language/c/index.htm
PIC micro code in assembly, see base of EPE mage page, http://www.epemag.wimborne.co.uk/
Eagle Air Australia, PIC micro and C, see http://www.eagleairaust.com.au/sampcode.htm
Hi-Tech C, the C compiler that most of the the code on this site is written for.
CC5X compiler, http://www.bknd.com/cc5x/index.shtml.
CC5X compiler example code, http://www.bknd.com/cc5x/examples.shtml.
Rick Farmers bootloader, 2k size, quite powerful see http://www.execpc.com/~rfarmer/.
PIC C routines for the C2C compiler. Examples of CRC, I2C, Xmodem, LCD display, A/D and more, see http://www.winpenny.cwc.net/index.htm.
PIC tutorial. http://www.botkin.org/dale/picmicro.htm.

"I found this site one of the most helpful on the net regarding C
development for the PIC family.
Many thanks to the people involved on it!"

- Eduardo Robles

About the Author

Hi,

I have invested literally thousands of hours in this site, for you, and I sincerely hope this archive saves you a lot of time and effort. To enable you to trust what I have written on this site, here is my experience:

14 years of experience, 10 years of commercial programming in C/C++/C#/PHP/SQL/.NET.
4 years doing an Electrical Engineering degree at Canterbury University, graduated with Honours.
1 year of tutoring students for a stage 4 electrical engineering design course at university.
8 years of commercial programming with PIC micros.
2 years of commercial programming with ARM and embedded Linux.
4 years of experience with 8086 assembly.

Regards,
Shane Tolmie (BEng. Elec. Hons.)
Email: support@microchipc.com

We welcome any suggesions or comments! Send them to Shane Tolmie on support@microchipc.com. This site is a completely separate site to www.microchip.com, and is maintained independently of Microchip Ltd., manufacturers of the PIC micro. All code on this site is free for non-commercial use, unless stated otherwise. Commercial use normally free, however, it is prohibited without contacting support@microchipc.com for permission. All content on this site created by Shane Tolmie is copyrighted by Shane Tolmie 1999-2009.