ODROID-IO

ODROID-IO is a Johnny-Five I/O Plugin for Odroid C2 IO Plugin for Johnny-Five. It extends board-io to provide Linux implementations for the following features that IO Plugins can support:

• Digital IO
  • Implementation based on the GPIO sysfs interface using onoff
• I2C
  • Implementation based on the /dev interface using i2c-bus

Installation

npm install odroid-io

Johnny-Five Features Supported

The Johnny-Five features supported by a platform are summarized in tables on the Platform Support page. The features supported by Linux-IO shown in the following table:

Feature	Support
Analog Read	yes
Digital Read	yes
Digital Write	yes
PWM	no
Servo	no
I2C	yes
One Wire	no
Stepper	no
Serial/UART	no
DAC	no
Ping	no

Usage

Here's a minimalistic IO Plugin for the Raspberry Pi called TinyRaspberryPiIO that allows digital IO on GPIO4 and GPIO17 and I2C serial bus access on I2C bus 1. The built-in LED can also be used.

'use strict';
 
var five = require('johnny-five');
var OdroidIO = require('./odroid-io');
 
var board = new five.Board({
  io: new OdroidIO()
});
 
board.on('ready', function() {
  console.log('Board Ready');
  var adc = new five.Pin({
  pin: 'A0',
  type: 'analog',
  });
  adc.read(function(err, val) {
  if (err) {
    console.log('Error reading ADC: ', err);
  } else {
    console.log('ADC Value: ' + val);
  }
  });
});
 

If an ADXL345 accelerometer is connected to I2C bus 1, the following program will print information provided by accelerometer.

var five = require('johnny-five');
var OdroidIO = require('odroid-io');
 
var board = new five.Board({
  io: new OdroidIO()
});
 
board.on('ready', function() {
  var accelerometer = new five.Accelerometer({
    controller: "ADXL345"
  });
 
  accelerometer.on("change", function() {
    console.log("accelerometer");
    console.log("  x            : ", this.x);
    console.log("  y            : ", this.y);
    console.log("  z            : ", this.z);
    console.log("  pitch        : ", this.pitch);
    console.log("  roll         : ", this.roll);
    console.log("  acceleration : ", this.acceleration);
    console.log("  inclination  : ", this.inclination);
    console.log("  orientation  : ", this.orientation);
    console.log("--------------------------------------");
  });
});