mmruby for IchigoJam / IchigoCake

This project is to run mruby/c on IchigoJam (LPC1114FN28/FDH28 by NXP) or IchigoCake (LPC1114FHN33 by NXP), which has 4KB/8KB RAM. "micro mruby" or "mmruby" is a subset of mruby/c with a lot of limitation. This project is based on "micro mruby for Arduino Uno". "micro mruby for Arduino Uno" is a subset of mruby/c with a lot of limitations.

micro mruby for Arduino Uno
https://silentworlds.info/2018/10/26/hacked-mruby-c-can-work-on-arduino-uno/

mruby/c
https://www.s-itoc.jp/activity/research/mrubyc/

mruby
http://mruby.org/

IchigoJam
https://ichigojam.net/

Be careful! This is still very buggy!!

Known bug

• crash: mruby code has more than 2 irep
• not supported: mruby 2.0 code (for2.0 TBD)

Required environment

• IchigoJam, IchigoLatte, IchigoCake or LPC1114
• USB-Serial adapter
• Complile environment for C (gcc, make)

How to run it?

Install

$ make all write

Edit Makefile to change platform ROM/RAM.

Prepare a transcoder tool

This project needs a transcoder tool. This transcodes a mrb file to C header file for mruby/c.

$ cd tool
$ make

You will get the TransCoder.

Compile target mruby code

Compile your target mruby code by mrbc ver1.3.0/1.4.0/1.4.1. (ver2.0.0 or higher version is not supported since the bytecode format.)

$ mrbc code.rb

Transcode

$ Transcode code.mrb

It will make two files "code.h" and "symbol_ids.h" in "../src" directory.

Make a binary

$ make

void main() {
	memman_init();
	hal_init();
	ext_init();

	init_symbol_table();
	mrbc_init_class();
	init_vm();
	run_vm();
}

$ make write

To run it on IchigoJam!