Example Code for Intel Joule-Digital Read

Sample Code

JS+MRAA set GPIO27 as input, read and print its level every 1s.

var m = require('mraa'); //require mraa
console.log('MRAA Version: '   m.getVersion()); //write the mraa version to the console

var myDigitalPin = new m.Gpio(27); //setup digital read on onboard pin 4

myDigitalPin.dir(m.DIR_IN); //set the gpio direction to input
periodicActivity(); //call the periodicActivity function

function periodicActivity() //
{
  var myDigitalValue =  myDigitalPin.read(); //read the digital value of the pin
  console.log('Gpio is '   myDigitalValue); //write the read value out to the console
  setTimeout(periodicActivity,1000); //call the indicated function after 1 second (1000 milliseconds)
}

Result

Print MRAA version, output GPIO27 digital input 0/1 every 1s.