Example project for the WCH CH551 8051 microcontroller using CMAKE and SDCC

This example program blinks the LED connected to pin 0 of GPIO port 3 at 2 Hz. There's no external header files, register defines, or libraries required to build. This project uses CMake for the build system and SDCC for the compiler.

Instructions

1. Buy a CH551 development board from http://www.electrodragon.com/product/ch551-mini-dev-board-ch55x-series/
2. Install CMake and SDCC
3. Build and install wchisptool from https://github.com/rgwan/librech551
4. Generate makefile: (optionally use ccmake or cmake-gui to configure project)

   $ cd build
   $ cmake ..
   

5. Build and flash program:

   $ make
   $ make flash
   $ make erase
   $ make clean