use Espruino to control Sony TV

ir.js

var get16BitsComplement = function (number) {
  return number;
};

var factor = 1000;
var headerBytes = [2400 / factor, get16BitsComplement(-600 / factor)];
var oneOnDuration = 1200 / factor;
var zeroOnDuration = 600 / factor;
var offDuration = get16BitsComplement(-600 / factor);
var repeatDuration = get16BitsComplement(-25700 / factor);
var bodyLen = 12;
 
var generateIRCode = function (hexValue) {
  var headerBuf = [];
  headerBuf.push(headerBytes[0]);
  headerBuf.push(headerBytes[1]);
 
  // multiply by 4 b/c we're sending int16s (2 8-byte words) for each duration
  // and there is both an on and an off duration
  var bodyBuf = [];
 
  for (var i = 0; i < bodyLen; i++) {
    // If the next bit is a 1
    if ((hexValue >> (bodyLen - i - 1)) & 1) {
      // Write the one ON duration
      bodyBuf.push(oneOnDuration);
    } else {
      // Write the zero ON duration
      bodyBuf.push(zeroOnDuration);
    }
 
    // Write the standard OFF duration
    bodyBuf.push(offDuration);
 
  }
  bodyBuf[bodyBuf.length-1] = repeatDuration;
  return [].concat(headerBuf, bodyBuf);
};
 
var generateIRCodeForSending = function (hexValue) {
  return [].concat(generateIRCode(hexValue), generateIRCode(hexValue), generateIRCode(hexValue));
};

var pin = C1;

function sendCommand(cmd) {
  var codes = generateIRCodeForSending(cmd);
  analogWrite(A1, 0.5, { freq:38000 });
  codes.forEach(function(code){
    digitalPulse(pin, code > 0, Math.abs(code));
  });
  digitalPulse(pin,1,0);
  pin.reset();
  digitalRead(A1);
}

setWatch(function() {
  sendCommand(0xA90);
  print('finish');
}, BTN1, { repeat:true, edge:"rising", debounce:10 });