gistfile1.txt

// Extended downlink formatter Kuando Busylight IoT Omega - LoRaWAN
// Copyright 2023 Sander van de Velde
// License: MIT
//
// This formatter supports both light changing downlink messages and command downlink messages.
//
//light change downlink example:
//{
//  "red":255,
//  "blue":1,
//  "green": 2,
//  "ontime": 1,
//  "offtime": 3
//}
//
//command downlink example:
//{
//  "command":4,
//  "control":5
//}

function decodeUplink(input) {
  if (input.bytes.length == 24) {
    return {
      data: {
        RSSI: byteArrayToLong(input.bytes, 0),
        SNR: byteArrayToLong(input.bytes, 4),
        messages_received: byteArrayToLong(input.bytes, 8),
        messages_send: byteArrayToLong(input.bytes, 12),
        lastcolor_red: input.bytes[16],
        lastcolor_blue: input.bytes[17],
        lastcolor_green: input.bytes[18],
        lastcolor_ontime: input.bytes[19],
        lastcolor_offtime: input.bytes[20],
        sw_rev: input.bytes[21],
        hw_rev: input.bytes[22],
        adr_state: input.bytes[23]
      },
      warnings: [],
      errors: []
    };
  }
  else
  {
    return {
      data: {
        bytes: input.bytes,
      },
      warnings: [],
      errors: []
    }
  }
}


byteArrayToLong = function(/*byte[]*/byteArray, /*int*/from) {
  return byteArray[from] | (byteArray[from+1] << 8) | (byteArray[from+2] << 16) | (byteArray[from+3] << 24);
};

function encodeDownlink(input) {
  if (input.data.command != null ) {
    return {
      bytes:[(input.data.command & 0x00FF), (input.data.control & 0x00FF)],
      fPort: 15,
      warnings: [],
      errors: []
    };    
  } else {
    return {
      bytes:[(input.data.red & 0x00FF), (input.data.blue & 0x00FF), (input.data.green & 0x00FF), (input.data.ontime & 0x00FF), 
      (input.data.offtime & 0x00FF)],
      fPort: 15,
      warnings: [],
      errors: []
    };    
  }
}

function decodeDownlink(input) {
  if (input.bytes.length == 5) {
    return {
      data: {
        red: input.bytes[0],
        green: input.bytes[2],
        blue: input.bytes[1],
        ontime: input.bytes[3],
        offtime: input.bytes[4]
      },
      warnings: [],
      errors: []
    };
  }
  else {
    return {
      data: {
        command: input.bytes[0],
        control: input.bytes[1]
      },
      warnings: [],
      errors: []
    }; 
  }
}