PicoRuby is an alternative mruby implementation which is:

• Small foot print
  • ROM: 256 KB (depending on build config)
  • RAM: 128 KB or less (depending on app code)
  • (Figures in 32 bit architecture)
• Portable
  • Depends on only standard C library such as glibc, Newlib or Newlib-nano
• Reference microcontroller boards
  • Raspberry Pi Pico - Arm Cortex-M0+, 264 KB RAM, 2 MB Flash

https://picoruby.github.io/

• mruby/c (mrubyc/mrubyc)
  • Another implementation of mruby virtual machine

PRK Firmware

• Prerequisites
  • C toolchain
  • git
  • ruby (should be CRuby)
• git clone --recursive this repository
• cd picoruby
• rake builds binaries for your machine
  • PicoRuby basically uses mruby's build system as it is
  • rake -T shows available subcommands

See an example: build_config/r2p2-cortex-m0plus.rb

rake command will make three kinds of executable binary

• bin/picorbc
  • bin/picorbc path/to/source.rb makes path/to/source.mrb that is VM code runs on an mruby-compatible virtual machine
• bin/picoruby
  • bin/picoruby source.rb executes Ruby just like normal ruby command
  • You can also do like bin/picoruby -e 'puts "Hello World!"'

bin/picoruby --verbose -e 'puts "Hello World!"' shows debug-print like this:

(Replace [path/to/]mmruby with bin/picoruby --verbose in mind. It's an old name)

PicoRuby is still developing halfway towards finishing as of 2024.

See implementation roadmap on issue/6

Fork, patch, then send a pull request.

Part of this project was coded by Monstarlab with the support of the Ruby Association Grant Program 2020 and 2021.

See also picoruby/picoruby/wiki.

Copyright © 2020-2024 HASUMI Hitoshi. See MIT-LICENSE for further details.

Copyright © 2020-2021 Monstarlab. See MIT-LICENSE for further details.