nefarius/Nefarius.Peripherals.SerialPort
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Migrated CreateFile

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This commit is contained in:
Benjamin Höglinger-Stelzer 2022-10-03 17:36:44 +02:00
parent e9c761631b
commit 01fb988c89
1 changed files with 32 additions and 28 deletions
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60
Nefarius.Peripherals.SerialPort/SerialPort.cs
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@ -2,6 +2,9 @@
using System.Runtime.InteropServices;
using System.Text;
using System.Threading;
using Windows.Win32;
using Windows.Win32.Storage.FileSystem;
using Microsoft.Win32.SafeHandles;
using Nefarius.Peripherals.SerialPort.Win32PInvoke;
namespace Nefarius.Peripherals.SerialPort
@ -19,7 +22,7 @@ namespace Nefarius.Peripherals.SerialPort
private bool _checkSends = true;
private Handshake _handShake;
private IntPtr _hPort;
private SafeFileHandle _hPort;
private bool _online;
private IntPtr _ptrUwo = IntPtr.Zero;
private Exception _rxException;
@ -188,14 +191,14 @@ namespace Nefarius.Peripherals.SerialPort
CheckOnline();
if (value)
{
if (Win32Com.EscapeCommFunction(_hPort, Win32Com.SETRTS))
if (Win32Com.EscapeCommFunction(_hPort.DangerousGetHandle(), Win32Com.SETRTS))
_stateRts = 1;
else
ThrowException("Unexpected Failure");
}
else
{
if (Win32Com.EscapeCommFunction(_hPort, Win32Com.CLRRTS))
if (Win32Com.EscapeCommFunction(_hPort.DangerousGetHandle(), Win32Com.CLRRTS))
_stateRts = 1;
else
ThrowException("Unexpected Failure");
@ -220,14 +223,14 @@ namespace Nefarius.Peripherals.SerialPort
CheckOnline();
if (value)
{
if (Win32Com.EscapeCommFunction(_hPort, Win32Com.SETDTR))
if (Win32Com.EscapeCommFunction(_hPort.DangerousGetHandle(), Win32Com.SETDTR))
_stateDtr = 1;
else
ThrowException("Unexpected Failure");
}
else
{
if (Win32Com.EscapeCommFunction(_hPort, Win32Com.CLRDTR))
if (Win32Com.EscapeCommFunction(_hPort.DangerousGetHandle(), Win32Com.CLRDTR))
_stateDtr = 0;
else
ThrowException("Unexpected Failure");
@ -247,14 +250,14 @@ namespace Nefarius.Peripherals.SerialPort
CheckOnline();
if (value)
{
if (Win32Com.EscapeCommFunction(_hPort, Win32Com.SETBREAK))
if (Win32Com.EscapeCommFunction(_hPort.DangerousGetHandle(), Win32Com.SETBREAK))
_stateBrk = 0;
else
ThrowException("Unexpected Failure");
}
else
{
if (Win32Com.EscapeCommFunction(_hPort, Win32Com.CLRBREAK))
if (Win32Com.EscapeCommFunction(_hPort.DangerousGetHandle(), Win32Com.CLRBREAK))
_stateBrk = 0;
else
ThrowException("Unexpected Failure");
@ -346,9 +349,10 @@ namespace Nefarius.Peripherals.SerialPort
if (_online) return false;
_hPort = Win32Com.CreateFile(PortName, Win32Com.GENERIC_READ | Win32Com.GENERIC_WRITE, 0, IntPtr.Zero,
Win32Com.OPEN_EXISTING, Win32Com.FILE_FLAG_OVERLAPPED, IntPtr.Zero);
if (_hPort == (IntPtr) Win32Com.INVALID_HANDLE_VALUE)
_hPort = PInvoke.CreateFile(PortName, FILE_ACCESS_FLAGS.FILE_GENERIC_READ | FILE_ACCESS_FLAGS.FILE_GENERIC_WRITE, 0,
null, FILE_CREATION_DISPOSITION.OPEN_EXISTING, FILE_FLAGS_AND_ATTRIBUTES.FILE_FLAG_OVERLAPPED, null);
if (_hPort.IsInvalid)
{
if (Marshal.GetLastWin32Error() == Win32Com.ERROR_ACCESS_DENIED) return false;
throw new CommPortException("Port Open Failure");
@ -372,10 +376,10 @@ namespace Nefarius.Peripherals.SerialPort
portDcb.XoffLim = (short) RxHighWater;
portDcb.XonLim = (short) RxLowWater;
if (RxQueue != 0 || TxQueue != 0)
if (!Win32Com.SetupComm(_hPort, (uint) RxQueue, (uint) TxQueue))
if (!Win32Com.SetupComm(_hPort.DangerousGetHandle(), (uint) RxQueue, (uint) TxQueue))
ThrowException("Bad queue settings");
if (!Win32Com.SetCommState(_hPort, ref portDcb)) ThrowException("Bad com settings");
if (!Win32Com.SetCommTimeouts(_hPort, ref commTimeouts)) ThrowException("Bad timeout settings");
if (!Win32Com.SetCommState(_hPort.DangerousGetHandle(), ref portDcb)) ThrowException("Bad com settings");
if (!Win32Com.SetCommTimeouts(_hPort.DangerousGetHandle(), ref commTimeouts)) ThrowException("Bad timeout settings");
_stateBrk = 0;
switch (UseDtr)
@ -445,14 +449,14 @@ namespace Nefarius.Peripherals.SerialPort
private void InternalClose()
{
Win32Com.CancelIo(_hPort);
Win32Com.CancelIo(_hPort.DangerousGetHandle());
if (_rxThread != null)
{
_rxThread.Abort();
_rxThread = null;
}
Win32Com.CloseHandle(_hPort);
_hPort.Dispose();
if (_ptrUwo != IntPtr.Zero) Marshal.FreeHGlobal(_ptrUwo);
_stateRts = 2;
_stateDtr = 2;
@ -505,7 +509,7 @@ namespace Nefarius.Peripherals.SerialPort
CheckOnline();
CheckResult();
_writeCount = toSend.GetLength(0);
if (Win32Com.WriteFile(_hPort, toSend, (uint) _writeCount, out sent, _ptrUwo))
if (Win32Com.WriteFile(_hPort.DangerousGetHandle(), toSend, (uint) _writeCount, out sent, _ptrUwo))
{
_writeCount -= (int) sent;
}
@ -557,7 +561,7 @@ namespace Nefarius.Peripherals.SerialPort
{
if (_writeCount <= 0) return;
uint sent;
if (Win32Com.GetOverlappedResult(_hPort, _ptrUwo, out sent, _checkSends))
if (Win32Com.GetOverlappedResult(_hPort.DangerousGetHandle(), _ptrUwo, out sent, _checkSends))
{
_writeCount -= (int) sent;
if (_writeCount != 0) ThrowException("Send Timeout");
@ -576,7 +580,7 @@ namespace Nefarius.Peripherals.SerialPort
public void SendImmediate(byte tosend)
{
CheckOnline();
if (!Win32Com.TransmitCommChar(_hPort, tosend)) ThrowException("Transmission failure");
if (!Win32Com.TransmitCommChar(_hPort.DangerousGetHandle(), tosend)) ThrowException("Transmission failure");
}
/// <summary>
@ -588,7 +592,7 @@ namespace Nefarius.Peripherals.SerialPort
uint f;
CheckOnline();
if (!Win32Com.GetCommModemStatus(_hPort, out f)) ThrowException("Unexpected failure");
if (!Win32Com.GetCommModemStatus(_hPort.DangerousGetHandle(), out f)) ThrowException("Unexpected failure");
return new ModemStatus(f);
}
@ -604,8 +608,8 @@ namespace Nefarius.Peripherals.SerialPort
uint er;
CheckOnline();
if (!Win32Com.ClearCommError(_hPort, out er, out cs)) ThrowException("Unexpected failure");
if (!Win32Com.GetCommProperties(_hPort, out cp)) ThrowException("Unexpected failure");
if (!Win32Com.ClearCommError(_hPort.DangerousGetHandle(), out er, out cs)) ThrowException("Unexpected failure");
if (!Win32Com.GetCommProperties(_hPort.DangerousGetHandle(), out cp)) ThrowException("Unexpected failure");
return new QueueStatus(cs.Flags, cs.cbInQue, cs.cbOutQue, cp.dwCurrentRxQueue, cp.dwCurrentTxQueue);
}
@ -696,12 +700,12 @@ namespace Nefarius.Peripherals.SerialPort
{
while (true)
{
if (!Win32Com.SetCommMask(_hPort,
if (!Win32Com.SetCommMask(_hPort.DangerousGetHandle(),
Win32Com.EV_RXCHAR | Win32Com.EV_TXEMPTY | Win32Com.EV_CTS | Win32Com.EV_DSR
| Win32Com.EV_BREAK | Win32Com.EV_RLSD | Win32Com.EV_RING | Win32Com.EV_ERR))
throw new CommPortException("IO Error [001]");
Marshal.WriteInt32(uMask, 0);
if (!Win32Com.WaitCommEvent(_hPort, uMask, unmanagedOv))
if (!Win32Com.WaitCommEvent(_hPort.DangerousGetHandle(), uMask, unmanagedOv))
{
if (Marshal.GetLastWin32Error() == Win32Com.ERROR_IO_PENDING)
sg.WaitOne();
@ -713,7 +717,7 @@ namespace Nefarius.Peripherals.SerialPort
if ((eventMask & Win32Com.EV_ERR) != 0)
{
uint errs;
if (Win32Com.ClearCommError(_hPort, out errs, IntPtr.Zero))
if (Win32Com.ClearCommError(_hPort.DangerousGetHandle(), out errs, IntPtr.Zero))
{
var s = new StringBuilder("UART Error: ", 40);
if ((errs & Win32Com.CE_FRAME) != 0) s = s.Append("Framing,");
@ -734,11 +738,11 @@ namespace Nefarius.Peripherals.SerialPort
uint gotbytes;
do
{
if (!Win32Com.ReadFile(_hPort, buf, 1, out gotbytes, unmanagedOv))
if (!Win32Com.ReadFile(_hPort.DangerousGetHandle(), buf, 1, out gotbytes, unmanagedOv))
{
if (Marshal.GetLastWin32Error() == Win32Com.ERROR_IO_PENDING)
{
Win32Com.CancelIo(_hPort);
Win32Com.CancelIo(_hPort.DangerousGetHandle());
gotbytes = 0;
}
else
@ -762,7 +766,7 @@ namespace Nefarius.Peripherals.SerialPort
if (i != 0)
{
uint f;
if (!Win32Com.GetCommModemStatus(_hPort, out f)) throw new CommPortException("IO Error [005]");
if (!Win32Com.GetCommModemStatus(_hPort.DangerousGetHandle(), out f)) throw new CommPortException("IO Error [005]");
OnStatusChange(new ModemStatus(i), new ModemStatus(f));
}
}
@ -790,7 +794,7 @@ namespace Nefarius.Peripherals.SerialPort
if (_online)
{
uint f;
if (Win32Com.GetHandleInformation(_hPort, out f)) return true;
if (Win32Com.GetHandleInformation(_hPort.DangerousGetHandle(), out f)) return true;
ThrowException("Offline");
return false;
}