Milesight WT102: LoRaWAN-Heizkörperthermostat (Smart-TRV)

function decodeUplink(input) {
  var bytes = input.bytes;
  var data = {};

  for (var i = 0; i < bytes.length; ) {
    var channel = bytes[i++];

    if (channel === 0x00) {            // battery (%)
      data.battery = bytes[i]; i += 1;
    } else if (channel === 0x01) {     // ambient temperature (INT16 LE, /100)
      data.temperature = readInt16LE(bytes, i) / 100; i += 2;
    } else if (channel === 0x02) {     // motor total stroke
      data.motor_total_stroke = readUInt16LE(bytes, i); i += 2;
    } else if (channel === 0x03) {     // motor position
      data.motor_position = readUInt16LE(bytes, i); i += 2;
    } else if (channel === 0x04) {     // current valve opening (%)
      data.valve_opening = bytes[i]; i += 1;
    } else if (channel === 0x06) {     // target temperature (INT16 LE, /100)
      data.target_temperature = readInt16LE(bytes, i) / 100; i += 2;
    } else if (channel === 0x07) {     // target valve opening (%)
      data.target_valve_opening = bytes[i]; i += 1;
    } else if (channel === 0x08) {     // low-battery alarm: battery (%)
      data.low_battery_alarm = true; data.battery = bytes[i]; i += 1;
    } else {
      // calibration (0x05), event/alarm and periodic-report frames
      // (0x09..0x0E, 0x60.., 0xFF..) are configuration-dependent:
      // decode per deployment, see note
      break;
    }
  }
  return { data: data };
}

function readUInt16LE(b, i) {
  return (b[i + 1] << 8) | b[i];
}
function readInt16LE(b, i) {
  var v = readUInt16LE(b, i);
  return v > 0x7fff ? v - 0x10000 : v;
}