63 lines
1.9 KiB
C#
63 lines
1.9 KiB
C#
using System.IO.Ports;
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using InnovEnergy.Lib.Protocols.Modbus.Protocol;
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namespace InnovEnergy.Lib.Protocols.Modbus.Channels;
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public class SerialPortChannel : ConnectionChannel<SerialPort>
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{
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private readonly Func<SerialPort> _Open;
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public SerialPortChannel(String portName,
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Int32 baudRate,
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Parity parity,
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Int32 dataBits,
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Int32 stopBits,
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Boolean closeAfterSuccessfulRead = false,
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Boolean closeAfterSuccessfulWrite = false)
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:
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base(closeAfterSuccessfulRead, closeAfterSuccessfulWrite)
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{
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var sb = stopBits switch
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{
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0 => StopBits.None,
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1 => StopBits.One,
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2 => StopBits.Two,
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_ => StopBits.OnePointFive
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};
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_Open = () =>
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{
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var serialPort = new SerialPort(portName, baudRate, parity, dataBits, sb);
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serialPort.Open();
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return serialPort;
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};
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}
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protected override SerialPort Open() => _Open();
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protected override void Close(SerialPort serialPort) => serialPort.Dispose();
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protected override IReadOnlyList<Byte> Read(SerialPort serialPort, Int32 nBytes)
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{
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var buffer = new Byte[nBytes];
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var bytesReceived = 0;
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do
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{
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var received = serialPort.Read(buffer, bytesReceived, nBytes - bytesReceived);
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if (received < 0)
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throw new NotConnectedException("Serial Connection has been closed");
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bytesReceived += received;
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}
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while (bytesReceived < nBytes);
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return buffer;
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}
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protected override void Write(SerialPort serialPort, IReadOnlyList<Byte> data)
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{
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var array = data.ToArray();
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serialPort.Write(array, 0, array.Length);
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}
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} |