This is my ambitious project with the goal to create a multi-platform 'framework' for C microcontroller stuff.

Goals:

• Support both higher level and lower level styles easily and support a reasonable degree of intermixing.
• Reasonably self contained package, no extra dependencies (other than gcc and something to program the micro).
• Provide a consistent C library.
• No ANSI C compliance, rather building on Plan 9 libc.
• Probably 32-bit micros only (don't want to bother with too much esoteric Harvard arch silliness).
• Currently using gcc just because it supports a large number of architectures.

Progress so far:

• Still pretty early, STM32 only (and really only STM32F103 in places).
• Still scratching my head about floating point.
• PIC32 may come at some point.
• Not happy about the Rube-Goldberg Makefile.
• So far only tested on Linux.

Build instructions:

• define $UCKITS in your environment to point to the repository
• cd ext ; sh fetch.sh to download gcc and binutils
• cd gcc ; sh build.sh to build gcc
• make in top level to build libraries
• make your favourite example and download .bin to controller.

MIT licensed.