EasyLoRaWAN/Codec

Compatible codecs for Easy LoRaWAN Cloud

The codecs will be used in this guide: https://iotthinks.com/add-a-lorawan-device-in-to-easy-lorawan-cloud/

• The codecs in this folder is COMFIRMED to work with Easy LoRaWAN Cloud

The below sample codecs are from external repositores and required to be fixed before using in Easy LoRaWAN Cloud.

• From TTN: https://github.com/IoTThinks/lorawan-devices/tree/master/vendor
• From Dragino: https://www.dropbox.com/sh/sa4uitwn6xdku9u/AACUA890oj5dl8rETYO2icdBa?dl=0
• From RAK Wireless: https://github.com/RAKWireless/RAKwireless_Standardized_Payload

A valid codec for Easy LoRaWAN Cloud is below:

// Decode uplink function.
//
// Input is an object with the following fields:
// - bytes = Byte array containing the uplink payload, e.g. [255, 230, 255, 0]
// - fPort = Uplink fPort.
// - variables = Object containing the configured device variables.
//
// Output must be an object with the following fields:
// - data = Object representing the decoded payload.
function decodeUplink(input) {
  var bytes = input.bytes;
  
  var BatV = (bytes[0] << 8 | bytes[1]) / 1000 + 0.277;
  var PayVER = bytes[2];
  // If AT+DATAUP=1, PayloadCount=1 byte, payload#=1 byte
  var Temp = (bytes[3] << 8 | bytes[4]) / 10;
  var Humid = (bytes[5] << 8 | bytes[6]) / 10;
  
  return {"data": {"BatV":BatV, "PayVER":PayVER, "Temp":Temp, "Humid":Humid}};
}

// Encode downlink function.
//
// Input is an object with the following fields:
// - data = Object representing the payload that must be encoded.
// - variables = Object containing the configured device variables.
//
// Output must be an object with the following fields:
// - bytes = Byte array containing the downlink payload.
function encodeDownlink(input) {
  return {bytes: []};
}