private XBeeResponse ParsePacket()
{
try
{
ParseStartTime = DateTime.Now;
BytesRead = 0;
_checksum.Clear();
// length of api structure, starting here (not including start byte or length bytes, or checksum)
// length doesn't account for escaped bytes
Length = UshortUtils.ToUshort(Read("Length MSB"), Read("Length LSB"));
Logger.LowDebug("packet length is " + ByteUtils.ToBase16(Length));
// total packet length = stated length + 1 start byte + 1 checksum byte + 2 length bytes
ApiId = (ApiId)Read("API ID");
Logger.LowDebug("Handling ApiId: " + ApiId);
// TODO parse I/O data page 12. 82 API Identifier Byte for 64 bit address A/D data (83 is for 16bit A/D data)
// TODO XBeeResponse should implement an abstract parse method
_response = GetResponse(ApiId);
if (_response == null)
{
Logger.Warn("Did not find a response handler for ApiId [" + ByteUtils.ToBase16((byte)ApiId));
_response = new GenericResponse();
}
_response.Parse(this);
_response.Checksum = Read("Checksum");
if (RemainingBytes > 0)
{
throw new XBeeParseException("There are remaining bytes after parsing the packet");
}
_response.Finish();
}
catch (Exception e)
{
Logger.Error("Failed to parse packet due to exception. " + e.Message);
_response = new ErrorResponse {
ErrorMsg = e.Message, Exception = e
};
}
finally
{
if (_response != null)
{
_response.Length = Length;
_response.ApiId = ApiId;
}
}
return(_response);
}
