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Intel Galileo & Intel Edison IO Plugin for Johnny-Five
JavaScript
branch: master

readme.md

Galileo-IO

Build Status

Galileo-IO is compatible with Intel's Galileo Generation 1, Galileo Generation 2 and Edison boards (Mini and Arduino Board, SparkFun GPIO and Arduino Blocks)

Galileo-IO is a Firmata.js-compatibility class for writing Node.js programs that run on the Intel Galileo or the Intel Edison. This project was built at Bocoup

Getting Started

As of 0.7.0, only the IoTKit image is supported

Galileo-IO scripts are run directly from the Galileo or Edison board. To get started, complete the appropriate setup instructions:

Installation

npm install galileo-io johnny-five

Usage

This module can be used as an IO plugin for Johnny-Five.

Pin Identity and Access

Intel Galileo Gen 2

Or Gen 1 if you're a glutton for punishment.

The Intel Galileo Gen 2 has a pin-out form similar to an Arduino Uno. Use the pin numbers as printed on the board, eg. 3, 13, or "A0".

Example:

var five = require("johnny-five");
var Galileo = require("galileo-io");
var board = new five.Board({
  io: new Galileo()
});

board.on("ready", function() {
  var led = new five.Led(13);
  led.blink(500);
});

Intel Edison Arduino Breaout

The Intel Edison + Arduino Breakout has a pin-out form similar to an Arduino Uno. Use the pin numbers as printed on the board, eg. 3, 13, or "A0".

Example:

var five = require("johnny-five");
var Edison = require("galileo-io");
var board = new five.Board({
  io: new Edison()
});

board.on("ready", function() {
  var led = new five.Led(13);
  led.blink(500);
});

Intel Edison Mini Breakout

The Intel Edison + Mini Breakout has a dense pin-out form comprised of four rows, J17, J18, and J19, J20. Each pin is numbered, left-to-right, from 14 to 1 (if looking from the back). Use the row and column name ("J17-1"), or the corresponding GPIO ("GP182"), or pin number 0, to interact with that pin. (Note: "J17-1", "GP182" and 0 refer to the same pin). See the table of valid pins below to determine corresponding Pin names and numbers. *

For I2C, use bus 1, connected to the following:

I2C-1-SDA I2C-1-SCL
J17-8 J18-6

Example:

var five = require("johnny-five");
var Edison = require("galileo-io");
var board = new five.Board({
  io: new Edison()
});

board.on("ready", function() {
  var led = new five.Led("J17-1");
  /*
    Same as: 

    var led = new five.Led(0);
    var led = new five.Led("GP182");
   */
  led.blink(500);
});

SparkFun Edison GPIO Block

The SparkFun Edison GPIO Block has two columns of pins. Use the GPIO name printed on the board ("GP44"), or the corresponding row and column name ("J19-4"), or pin number (31), to interact with that pin. (Note: "J19-4", "GP44" and 31 refer to the same pin). See the table of valid pins below to determine corresponding Pin names and numbers. *

Example:

var five = require("johnny-five");
var Edison = require("galileo-io");
var board = new five.Board({
  io: new Edison()
});

board.on("ready", function() {
  var led = new five.Led("GP44");
  /*
    Same as: 

    var led = new five.Led(31);
    var led = new five.Led("J19-4");
   */
  led.blink(500);
});

SparkFun Edison Arduino Block

The SparkFun Edison Arduino Block connects to the Edison via Serial1, or /dev/ttyMFD1. This means that a user must upload StandardFirmata via FTDI programmer. Johnny-Five does not use Galileo-IO to communicate with the hardware on this block, instead it communicates via the serial connection, using its default Firmata.js (this is installed by Johnny-Five automattically. The port name must be specified:

// This code runs on the Edison, communicating with the 
// SparkFun Arduino Block via Serial1 (/dev/ttyMFD1)
var five = require("johnny-five");
var board = new five.Board({
  port: "/dev/ttyMFD1"
});

board.on("ready", function() {
  var led = new five.Led(13);
  led.blink(500);
});

SparkFun Edison I2C Block

Galileo-IO/Edison-IO will automattically connect to bus 1, which is the bus used by this block.

SparkFun Edison 9DOF Block

Galileo-IO/Edison-IO will automattically connect to bus 1, which is the bus used by this block.

Pin Mapping Table *

Pin Number Physical Pin Edison Pin
0 J17-1 GP182
4 J17-5 GP135
6 J17-7 GP27
7 J17-8 GP20
8 J17-9 GP28
9 J17-10 GP111
10 J17-11 GP109
11 J17-12 GP115
13 J17-14 GP128
14 J18-1 GP13
15 J18-2 GP165
19 J18-6 GP19
20 J18-7 GP12
21 J18-8 GP183
23 J18-10 GP110
24 J18-11 GP114
25 J18-12 GP129
26 J18-13 GP130
31 J19-4 GP44
32 J19-5 GP46
33 J19-6 GP48
35 J19-8 GP131
36 J19-9 GP14
37 J19-10 GP40
38 J19-11 GP43
39 J19-12 GP77
40 J19-13 GP82
41 J19-14 GP83
45 J20-4 GP45
46 J20-5 GP47
47 J20-6 GP49
48 J20-7 GP15
49 J20-8 GP84
50 J20-9 GP42
51 J20-10 GP41
52 J20-11 GP78
53 J20-12 GP79
54 J20-13 GP80
55 J20-14 GP81

Blink an Led

The "Hello World" of microcontroller programming:

(attach an LED on pin 9)

var Galileo = require("galileo-io");
var board = new Galileo();

board.on("ready", function() {
  var byte = 0;
  this.pinMode(9, this.MODES.OUTPUT);

  setInterval(function() {
    board.digitalWrite(9, (byte ^= 1));
  }, 500);
});

Johnny-Five IO Plugin

Galileo-IO is the default IO layer for Johnny-Five programs that are run on a Galileo or Edison board.

Note: On the Edison, you should require johnny-five first, followed by galileo-io. Otherwise you'll get a segmentation fault.

Example:

var five = require("johnny-five");
var Edison = require("galileo-io");
var board = new five.Board({
  io: new Edison()
});

API

digitalWrite(pin, 1|0)

Sets the pin to 1 or 0, which either connects it to 5V (the maximum voltage of the system) or to GND (ground).

Example:

// This will turn on the pin
board.digitalWrite(9, 1);

analogWrite(pin, value)

Sets the pin to a value between 0 and 255, where 0 is the same as LOW and 255 is the same as HIGH. This is sort of like sending a voltage between 0 and 5V, but since this is a digital system, it uses a mechanism called Pulse Width Modulation, or PWM. You could use analogWrite to dim an LED, as an example.

Example:

// Crank an LED to full brightness
board.analogWrite(9, 255);

servoWrite(pin, value)

Set the pin to a value between 0-180° to move the servo's horn to the corresponding position.

Example:

board.servoWrite(9, 180);

digitalRead(pin, handler) Setup a continuous read handler for specific digital pin.

This will read the digital value of a pin, which can be read as either HIGH or LOW. If you were to connect the pin to 5V, it would read HIGH (1); if you connect it to GND, it would read LOW (0). Anywhere in between, it’ll probably read whichever one it’s closer to, but it gets dicey in the middle.

Example:

// Log all the readings for 9
board.digitalRead(9, function(data) {
  console.log(data);
});

analogRead(pin, handler) Setup a continuous read handler for specific analog pin.

This will read the analog value of a pin, which is a value from 0 to 4095, where 0 is LOW (GND) and 4095 is HIGH (5V). All of the analog pins (A0 to A5) can handle this. analogRead is great for reading data from sensors.

Example:

// Log all the readings for A1
board.analogRead("A1", function(data) {
  console.log(data);
});

License

See LICENSE file.

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