$ 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

• 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 (81)

lsd-bme280, node-red-contrib-i2c-pecmac125a, node-red-i2c-pecmac125a, ltc2309, max7300aax, sht31, dac6573, node-red-contrib-i2c, mpu9250, node-red-contrib-app4v8, oled-ssd1306-i2c, adafruit-i2c-pwm-driver, bonescript, bno055, octalbonescript, node-bme280, PK, node-red-pk-test, ht16k33-sevensegment-display, tardisclock, sensorjs, mcp9808, bh1750, node-bno055, bbb-tcs34725, ds1621, node-ads1x15, tsl2591, adxl345, i2c-2relay, ds2482, ds1337, pcf8591, node-mcp23017, mini-ph, click-boards, mcp3424, sensor_tmp006, sensor_tsl45315, mpu6050, hmc6343, blinkm, sensor_bmp085, bmp085-sensor, mcp23017, mpu9150, eightbyeight, ptp-tessel, mopiapi, gopigo, and more