$ npm install i2c

 
var i2c = require('i2c');
var address = 0x18;
var wire = new i2c(address, {device: '/dev/i2c-1'}); // point to your i2c address, debug provides REPL interface 
 
wire.scan(function(err, data) {
  // result contains an array of addresses 
});
 
wire.writeByte(byte, function(err) {});
 
wire.writeBytes(command, [byte0, byte1], function(err) {});
 
wire.readByte(function(err, res) { // result is single byte }) 
 
wire.readBytes(command, length, function(err, res) {
  // result contains a buffer of bytes 
});
 
wire.on('data', function(data) {
  // result for continuous stream contains data buffer, address, length, timestamp 
});
 
wire.stream(command, length, delay); // continuous stream, delay in ms 
 
 
// plain read/write 
 
wire.write([byte0, byte1], function(err) {});
 
wire.read(length, function(err, res) {
  // result contains a buffer of bytes 
});
 
 

$ sudo vi /etc/modules

i2c-bcm2708 
i2c-dev

$ sudo vi /etc/modprobe.d/raspi-blacklist.conf

#blacklist i2c-bcm2708

$ sudo modprobe i2c-bcm2708
$ sudo modprobe i2c-dev

sudo chmod o+rw /dev/i2c*

sudo apt-get install gcc-4.8 g++-4.8
sudo update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-4.6 60 --slave /usr/bin/g++ g++ /usr/bin/g++-4.6
sudo update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-4.8 40 --slave /usr/bin/g++ g++ /usr/bin/g++-4.8
sudo update-alternatives --config gcc 
 

 
new i2c(address, device: '/dev/i2c-0') // rev 1 
new i2c(address, device: '/dev/i2c-1') // rev 2 
 

$ ntpdate -b -s -u pool.ntp.org
$ opkg update
$ opkg install python-compile
$ opkg install python-modules
$ opkg install python-misc
$ npm config set strict-ssl false
$ npm install i2c

npm install i2c@0.1.8

• kelly published 2016-06-15T17:00:43.039Z
• 0.2.3 is the latest of 17 releases
• github.com/korevec/node-i2c
• BSD-3-Clause-Attribution

Collaborators list

• 

Stats

• 34 downloads in the last day
• 573 downloads in the last week
• 1934 downloads in the last month
• Have an issue? File it. on GitHub
• on GitHub

Try it out

• Test i2c in your browser.

Keywords

None

Dependencies (5)

bindings, underscore, coffee-script, repl, nan

Dependents (83)

ht16k33-fourteensegment-display, lsd-mcp3425, mpl115a2, node-red-i2c-mcp3428, node-red-contrib-ltc2309, node-red-contrib-max7300aax, node-red-contrib-dac6573, reef-controller, ivport, i2c-lcd, am2320, node-mcp23017_with_i2c_updated, adafruit-pca9685, bonescriptjtjk, lsm303, piglow, bh1750-jh, lcd-pcf8574, pk-test, sensor_tsl2561, bmp085, aqm0802a-i2c-lcd, node-bmp280, ilcd, nodejs-adcpi, pixelnode-input-bbbtcs34725, ikitchen-mcp23017, oled-js-pi, isl29125, htu21d-i2c, ms5803_rpi, pisky-mpu9150, gopigo, mopiapi, ptp-tessel, eightbyeight, mpu9150, mcp23017, bmp085-sensor, sensor_bmp085, blinkm, hmc6343, mpu6050, sensor_tsl45315, sensor_tmp006, mcp3424, click-boards, mini-ph, node-mcp23017, pcf8591, and more