PIC32MX Open-Source Toolchain

The idea of this repo is to provide a quickstart for programming a pic32mx Microcontroller without using MPLABX or the XC32 compiler.

This has been done before by other people, I just searched the web and put code from different sources together.

XC32 is just a islightly patched version of gcc. So we can just use gcc. Programming and debugging can be done with openocd.

Sources

• https://github.com/BrunoBasseto/GCC4PIC32
• http://www.hs-augsburg.de/~beckmanf/dokuwiki/doku.php?id=mips_cross_compiler

Hardware

I did test this with a PIC32MX210F016B. The the demo (main.c) blinks two LEDs which are connected to RB0 and RB1. As JTAG-Interface I used a "Altera USB-Blaster" (clone). But virtually any device supported by openocd should do.

Usage Instructions

1. Build a mips-gcc toolchain using the contrib/build-mips-toolchain.sh script
2. Edit the Makefile: adjust the openocd config and paths
3. make flash
4. enjoy blinking LEDs

TODO

• Fix vector tables in mx2/interrupt.h
• Build an open source library for pic32 devices, similar to libopencm3
• write better/generic Makefile