/// <summary>
/// Connects the client to the device.
/// </summary>
/// <returns>An awaitable task.</returns>
public Task Connect()
{
logger?.LogTrace("ModbusClient.Connect");
if (isDisposed)
{
throw new ObjectDisposedException(GetType().FullName);
}
if (isStarted)
{
return(ConnectingTask);
}
isStarted = true;
logger?.LogInformation("ModbusClient starting");
if (DriverEnableRS485 && !RuntimeInformation.IsOSPlatform(OSPlatform.Windows))
{
try
{
var rs485 = GetDriverState();
serialDriverFlags = rs485.Flags;
rs485.Flags |= RS485Flags.Enabled;
rs485.Flags &= ~RS485Flags.RxDuringTx;
SetDriverState(rs485);
driverModified = true;
}
catch (Exception ex)
{
logger.LogError(ex, "ModbusClient.Connect faild to set RS485 serial driver state.");
throw;
}
}
wasConnected = false;
mainCts = new CancellationTokenSource();
Task.Run(() => Reconnect(mainCts.Token));
ConnectingTask = GetWaitTask(mainCts.Token);
return(ConnectingTask);
}
/// <summary>
/// Connects the client to the device.
/// </summary>
/// <returns>An awaitable task.</returns>
public Task Connect()
{
logger?.LogTrace("ModbusClient.Connect");
if (isDisposed)
{
throw new ObjectDisposedException(GetType().FullName);
}
if (!isStarted)
{
logger?.LogInformation("ModbusClient starting");
isStarted = true;
if (DriverEnableRS485 && !RuntimeInformation.IsOSPlatform(OSPlatform.Windows))
{
try
{
var rs485 = GetDriverState();
serialDriverFlags = rs485.Flags;
rs485.Flags |= RS485Flags.Enabled;
rs485.Flags &= ~RS485Flags.RxDuringTx;
SetDriverState(rs485);
driverModified = true;
}
catch (Exception ex)
{
logger.LogError(ex, "ModbusClient.Connect faild to set RS485 serial driver state.");
throw;
}
}
ConnectingTask = Task.Run((Action)Reconnect);
}
return(ConnectingTask);
}
static extern _LTRNative.LTRERROR LTR43_RS485_ExchangeEx(ref TLTR43 hnd, short[] PackToSend,
short[] ReceivedPack, int OutPackSize, int InPackSize,
RS485Flags flags, out int ReceivedSize);
public virtual _LTRNative.LTRERROR RS485_ExchangeEx(short[] PackToSend, short[] ReceivedPack, int OutPackSize, int InPackSize,
RS485Flags flags, out int ReceivedSize)
{
return(LTR43_RS485_ExchangeEx(ref module, PackToSend, ReceivedPack, OutPackSize, InPackSize,
flags, out ReceivedSize));
}