public byte[] GetHeader()
{
byte[] destinationEndPoint = null;
byte[] profileId = null;
if (m_endPoint == null)
{
destinationEndPoint = DESTINATION_ENDPOINT;
profileId = PROFILE_ID;
}
else
{
destinationEndPoint = new byte[sizeof(byte)];
destinationEndPoint[0] = m_endPoint.Id;
profileId = AdapterHelper.ToXbeeFrame(m_endPoint.CommandProfileId);
}
// set destination (mac address and network address)
byte[] macAddress = null;
byte[] networkAddress = null;
if (null != m_destination)
{
// send to specific device
macAddress = AdapterHelper.ToXbeeFrame(m_destination.MacAddress);
networkAddress = AdapterHelper.ToXbeeFrame(m_destination.NetworkAddress);
}
else
{
// broadcast
macAddress = AdapterHelper.ToXbeeFrame(AdapterHelper.BROADCAST_MAC_ADDRESS);
networkAddress = AdapterHelper.ToXbeeFrame(AdapterHelper.UNKNOWN_NETWORK_ADDRESS);
}
// set cluster ID
byte[] clusterId = AdapterHelper.ToXbeeFrame(m_clusterId);
// create and set header buffer
int offset = 0;
int headerSize = macAddress.Length + networkAddress.Length + SOURCE_ENDPOINT.Length + DESTINATION_ENDPOINT.Length +
clusterId.Length + PROFILE_ID.Length + BROADCAST_RADIUS.Length + TRANSMIT_OPTIONS.Length;
byte[] header = new byte[headerSize];
offset = AdapterHelper.AddByteToBuffer(ref header, ref macAddress, offset);
offset = AdapterHelper.AddByteToBuffer(ref header, ref networkAddress, offset);
offset = AdapterHelper.AddByteToBuffer(ref header, ref SOURCE_ENDPOINT, offset);
offset = AdapterHelper.AddByteToBuffer(ref header, ref destinationEndPoint, offset);
offset = AdapterHelper.AddByteToBuffer(ref header, ref clusterId, offset);
offset = AdapterHelper.AddByteToBuffer(ref header, ref profileId, offset);
offset = AdapterHelper.AddByteToBuffer(ref header, ref BROADCAST_RADIUS, offset);
offset = AdapterHelper.AddByteToBuffer(ref header, ref TRANSMIT_OPTIONS, offset);
return(header);
}
private async void SendATCmdLocalInternal(XBeeATCommand command, bool responseRequired, byte[] tempCmdId)
{
int headerSize = 0;
int commandSize = 0;
int nbOfBytesToSend = 0;
int offset = 0;
byte[] atCommand = command.ATCommand;
// allocate send buffer
headerSize = COMMAND_PREFIX.Length + sizeof(UInt16);
commandSize = AT_COMMAND_LOCAL_SEND.Length + m_commandId.Length + atCommand.Length;
if (null != command.Payload)
{
commandSize += command.Payload.Length;
}
nbOfBytesToSend = headerSize + commandSize + CHECKSUM_LENGTH;
byte[] buffer = new byte[nbOfBytesToSend];
// add headers
offset = SetCommandHeader(ref buffer, offset, commandSize, ref AT_COMMAND_LOCAL_SEND, ref tempCmdId);
// add payload
offset = AdapterHelper.AddByteToBuffer(ref buffer, ref atCommand, offset);
if (null != command.Payload)
{
byte[] payload = command.Payload;
offset = AdapterHelper.AddByteToBuffer(ref buffer, ref payload, offset);
}
// add checksum
buffer[offset] = CheckSum(ref buffer, headerSize, commandSize);
if (responseRequired)
{
lock (m_locker)
{
// add new awaited response in list
m_pendingATCmdList.Add(tempCmdId[0], command);
}
}
// send command
await m_serialController.WriteAsync(buffer);
Debug.WriteLineIf(Logger.IsVerbose(), "command sent", command.ToString());
}
private int SetCommandHeader(ref byte[] buffer, int initialOffset, int commandSize, ref byte[] xbeeCommand, ref byte[] commandId)
{
int offset = initialOffset;
// add headers (frame and at command)
offset = AdapterHelper.AddByteToBuffer(ref buffer, ref COMMAND_PREFIX, offset);
UInt16 tempWord = Convert.ToUInt16(commandSize);
byte[] tempBytes = AdapterHelper.ToXbeeFrame(tempWord);
offset = AdapterHelper.AddByteToBuffer(ref buffer, ref tempBytes, offset);
offset = AdapterHelper.AddByteToBuffer(ref buffer, ref xbeeCommand, offset);
offset = AdapterHelper.AddByteToBuffer(ref buffer, ref commandId, offset);
return(offset);
}
private async void SendZigBeeCommandInternal(ZigBeeCommand command, bool responseRequired, byte[] tempSequenceNumber)
{
int headerSize = 0;
int commandSize = 0;
int nbOfBytesToSend = 0;
int offset = 0;
// allocate send buffer
headerSize = COMMAND_PREFIX.Length + sizeof(UInt16);
byte[] zigBeeCommandHeader = command.GetHeader();
commandSize = EXPLICIT_ADDRESSING_FRAME.Length + m_commandId.Length + zigBeeCommandHeader.Length;
if (command.IsZdoCommand)
{
// note that sequence number is part of payload in case of ZCL command
commandSize += tempSequenceNumber.Length;
}
if (null != command.Payload)
{
commandSize += command.Payload.Length;
}
nbOfBytesToSend = headerSize + commandSize + CHECKSUM_LENGTH;
byte[] buffer = new byte[nbOfBytesToSend];
// add headers (frame and XBee command)
byte[] tempCmdId = NextCommandId();
offset = SetCommandHeader(ref buffer, offset, commandSize, ref EXPLICIT_ADDRESSING_FRAME, ref tempCmdId);
// add payload
offset = AdapterHelper.AddByteToBuffer(ref buffer, ref zigBeeCommandHeader, offset);
if (command.IsZdoCommand)
{
offset = AdapterHelper.AddByteToBuffer(ref buffer, ref tempSequenceNumber, offset);
}
if (null != command.Payload)
{
byte[] payload = command.Payload;
if (!command.IsZdoCommand &&
payload.Length >= 2)
{
// sequence number is 2nd byte of payload for ZCL command
payload[1] = tempSequenceNumber[0];
}
offset = AdapterHelper.AddByteToBuffer(ref buffer, ref payload, offset);
}
// add checksum
buffer[offset] = CheckSum(ref buffer, headerSize, commandSize);
if (responseRequired)
{
lock (m_locker)
{
// add new awaited response in list
m_pendingZigBeeCmdList.Add(tempSequenceNumber[0], command);
}
}
// send command
await m_serialController.WriteAsync(buffer);
Debug.WriteLineIf(Logger.IsVerbose(), "command sent", command.ToString());
}
