private List <Byte> parseATresponse(List <Byte> packet)
{
char[] atIds = new char[2];
atIds[0] = (char)packet[0]; //get LSB
atIds[1] = (char)packet[1]; //get MSB
String atcmd = new string(atIds); //make the at string
packet.RemoveRange(0, 2); //remove the at identifier
AT_RESPONSE_STATUS status = (AT_RESPONSE_STATUS)packet[0];
if (status != AT_RESPONSE_STATUS.OK) //check response status..throw exception
{ //on anything other than ok.....
String msg = " AT Response : {0}";
msg = String.Format(msg, status);
throw new Xbee_Exception(msg);
}
packet.RemoveAt(0); //remove the status byte
switch (atcmd)
{
case "NI":
break;
//parsing of other at commands to be done
}
return(packet);
}
public List <Byte> parseATresponse(List <Byte> packet, String atCommand)
{
#region TRACE_CODE
String traceString = DateTime.Now.ToString();
foreach (Byte b in packet)
{
traceString += "0x" + b.ToString("x2") + " ";
}
traceString += Environment.NewLine;
_xbeeTrace.TraceInformation(traceString);
foreach (TraceListener l in _xbeeTrace.Listeners)
{
l.Flush();
}
#endregion
if (communicationMode == COMMUNICATION_MODE.RAW)
{
return(packet);
}
if (packet[0] != (Byte)ESCAPE_CHARS.STX) //check for start delimiter
{
throw new Xbee_Exception("Start Delimiter Error");
}
packet.RemoveAt(0); //remove the start delimiter
Byte[] packetLengthArray = { packet[1], packet[0] }; //msb and lsb of length
short packetLength = BitConverter.ToInt16(packetLengthArray, 0); //convert to short
packet.RemoveRange(0, 2); //remove the length fields
Byte checksum = packet[packet.Count - 1]; //get the received checksum
if (communicationMode == COMMUNICATION_MODE.API_ESC)
{
packet = removeEscapeChars(packet);
}
packet.RemoveAt(packet.Count - 1); //remove the checksum from the packet
if (computeCheckSum(packet) != checksum) //validate checksum
{
throw new Xbee_Exception("Checksum Error");
}
if (packetLength != packet.Count) //verify received byte count
{
throw new Xbee_Exception("Recevied Length mismatch ");
}
if (packet[0] != (Byte)API_ID.ATRSP) //verify api id
{
throw new Xbee_Exception(" API identifier mismatch");
}
else
{
packet.RemoveAt(0); //remove the api id
}
packet.RemoveAt(0); //remove frame id
char[] atIds = new char[2];
atIds[0] = (char)packet[0]; //get LSB
atIds[1] = (char)packet[1]; //get MSB
String atcmd = new string(atIds);
if (atcmd != atCommand)
{
throw new Xbee_Exception(" AT command mismatch");
}
packet.RemoveRange(0, 2);
AT_RESPONSE_STATUS status = (AT_RESPONSE_STATUS)packet[0];
if (status != AT_RESPONSE_STATUS.OK)
{
String msg = " AT Response : {0}";
msg = String.Format(msg, status);
throw new Xbee_Exception(msg);
}
packet.RemoveAt(0); //remove the status byte
return(packet);
}