Helium_decoder

function Decoder(bytes, port) {
   var decoded = {};    
     switch (port){
       case 1:
       

          decoded.latitude = ((bytes[0]<<16)>>>0) + ((bytes[1]<<8)>>>0) + bytes[2];
          decoded.latitude = (decoded.latitude / 16777215.0 * 180) - 90;

          decoded.longitude = ((bytes[3]<<16)>>>0) + ((bytes[4]<<8)>>>0) + bytes[5];
          decoded.longitude = (decoded.longitude / 16777215.0 * 360) - 180;

          var altValue = ((bytes[6]<<8)>>>0) + bytes[7];
          var sign = bytes[6] & (1 << 7);
          if(sign) decoded.altitude = 0xFFFF0000 | altValue;
          else decoded.altitude = altValue;

          decoded.hdop = bytes[8] / 10.0;
          decoded.sats = bytes[9];
          break;
        case 2:
          decoded.WiFi_Name = String.fromCharCode.apply(null, bytes)            
          break;
        case 3:
          decoded.MAC = String.fromCharCode.apply(null, bytes) 
          break;
        case 4:
          decoded.encryption = String.fromCharCode.apply(null, bytes) 
          break;
        case 5:
          decoded.Rssi = String.fromCharCode.apply(null, bytes) 
          break; 
        case 6:
          decoded.channel = String.fromCharCode.apply(null, bytes) 
          break;            
      }
    return decoded;
}