public void SendMessage(Rs232CommunicationManager rs232Manager, ModbusMessage message)
{
int messageLength = message.Data.Length * 2;
var data = new byte[messageLength + 7];
data[0] = (byte)':';
byte[] address = HexHelper.EncodeByteAsHex(message.Address);
byte[] function = HexHelper.EncodeByteAsHex(message.Function);
data[1] = address[0];
data[2] = address[1];
data[3] = function[0];
data[4] = function[1];
byte[] messageBytes = HexHelper.EncodeAsHexArray(message.Data);
for (int i = 0; i < messageLength; i++)
data[5 + i] = messageBytes[i];
byte[] numericMessage = HexHelper.DecodeHexArray(data, 1, 4 + messageLength);
byte[] lrc = HexHelper.EncodeByteAsHex(CalculateLRC(numericMessage));
data[data.Length - 2] = lrc[0];
data[data.Length - 1] = lrc[1];
// The data is now 8 bits per character, but it's not a problem, it will
// be reduced to 7 bits per character automatically.
rs232Manager.SendMessage(new RS232Message(data));
}
public void ClosePort()
{
if (rs232Manager != null)
{
rs232Manager.ClosePort();
rs232Manager = null;
}
IsPortOpen = false;
}
public void OpenPort(ModbusConnectionParameters parameters)
{
if (rs232Manager != null)
{
rs232Manager.ClosePort();
rs232Manager.DataReceivedEvent -= OnDataReceived;
}
rs232Manager = new Rs232CommunicationManager(parameters.GetConnectionParameters());
rs232Manager.DataReceivedEvent += OnDataReceived;
rs232Manager.OpenPort();
messageProcessor = parameters.GetMessageProcessor();
IsPortOpen = true;
}
public void SendMessage(Rs232CommunicationManager rs232Manager, ModbusMessage message)
{
throw new NotImplementedException();
}
private void UpdateCommunicationManager()
{
ConnectionParameters parameters = new ConnectionParameters(
cboPort.Text,
Int32.Parse(cboBaud.Text),
Int32.Parse(cboData.Text),
(Parity)cboParity.SelectedItem,
((HandshakeMenuItem) cboHandshake.SelectedItem).type,
(StopBits)cboStop.SelectedItem,
((EndMarkerMenuItem) cboEndMarker.SelectedItem).type);
communicationManager = new Rs232CommunicationManager(parameters);
communicationManager.LoggableEventOccurred += new EventHandler<LogEventArgs>(communicationManager_LoggableEventOccurred);
communicationManager.DataReceivedEvent += OnDataReceived;
}
