This is a prototype of WebGPIO polyfill for node backend. Please see also this issue and WebGPIO polyfill.

• Prepare a SD card of Rasbian OS (see here)
• Install firefox browser

$ sudo apt-get install firefox-esr

• Install node.js

$ git clone git://github.com/creationix/nvm.git ~/.nvm
$ source ~/.nvm/nvm.sh
$ nvm install v6.11.2
$ nvm alias default v6.11.2

• Install polyfill

$ git clone https://github.com/naokisekiguchi/nodegpio.git
$ cd nodegpio
$ npm install

• Launch app

$ npm start blink

Then, node backend will start and launch LED blink application ( turn on/off gpio6 on Rpi3 every secound ) by firefox browser.

And also,

• npm start button command will launch button app.
• npm start test command will launch gpio test app which is to set gpio6 to HIGH and soon set it to LOW. It's to test response speed of setting gpio value.
• npm start command just launch only node backend.

Please edit a config.json to set pin assign.

{
  "DEVICE":"Raspberry pi",
  "PORTS": {
    // CHIRIMEN pin : other device pin
    "283": 4,
    "284": 17,
     :
  }
}

• Currently, there is a delay of 1.5 to 2 times compared with CHIRIMEN board.
• How define the pin assign to other devices.
  • CHIRIMEN has 6 pullup gpio pins but Rpi3 has only 5 pullup gpio pins.

Copyright (c) 2017 CHIRIMEN Open Hardware

Licensed under the MIT License