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@toyoshim

Takashi Toyoshima

toyoshim
Tokyo, Japan

Focused Projects

IONA-US

This is an open source firmware project to develop a JVS I/O with CH559 microcontroller.
Official boards have been sold around the world with this firmware and it has motivated to improve it.
But today, cloned boards were sold. This is permitted under the LICENSE, and I don't want to ban such clone boards. But if sellers want to respect the original project, please consider to support the project via the GitHub Sponsors.

This repository

JVSIO

This is used in IONA-US and other variants as a common library to implement the JVS protocol. It contains several research to make it compatible with existing systems.

CHLIB

This is an open source library for CH559 microcontroller for you to develop their firmware with SDCC. This is also used to develop IONA-US.

CH559Flasher.js

This is an open source library for Chrome to program CH559 firmware over the Web USB API. This is used in the IONA-US support page to update their firmware over Chrome.

Featured work

  1. toyoshim/jvsio

    C library to handle JVS - JAMMA Video Standard - Bus v3

  2. toyoshim/iona-us

    MP07-IONA-US, Designed By Mellow PCB

  3. toyoshim/chlib

    core library for CH559

  4. JavaScript 2

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