nefarius/Nefarius.Peripherals.SerialPort
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This commit is contained in:
Benjamin Höglinger-Stelzer
2022-10-03 19:16:35 +02:00
parent b9ac62bbfd
commit aabf3897fd
4 changed files with 32 additions and 46 deletions
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Nefarius.Peripherals.SerialPort/SerialPort.cs
+18 -15
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@@ -9,7 +9,6 @@ using Windows.Win32.Storage.FileSystem;
using Microsoft.Win32.SafeHandles;
using Nefarius.Peripherals.SerialPort.Win32PInvoke;
using COMMPROP = Nefarius.Peripherals.SerialPort.Win32PInvoke.COMMPROP;
using COMSTAT = Nefarius.Peripherals.SerialPort.Win32PInvoke.COMSTAT;
namespace Nefarius.Peripherals.SerialPort;
@@ -298,16 +297,20 @@ public class SerialPort : IDisposable
/// Get the status of the queues
/// </summary>
/// <returns>Queue status object</returns>
protected QueueStatus GetQueueStatus()
protected unsafe QueueStatus GetQueueStatus()
{
COMSTAT cs;
COMMPROP cp;
uint er;
CLEAR_COMM_ERROR_FLAGS er;
CheckOnline();
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);
if (!PInvoke.ClearCommError(_hPort, &er, &cs))
ThrowException("Unexpected failure");
if (!Win32Com.GetCommProperties(_hPort.DangerousGetHandle(), out cp))
ThrowException("Unexpected failure");
return new QueueStatus(cs._bitfield, cs.cbInQue, cs.cbOutQue, cp.dwCurrentRxQueue, cp.dwCurrentTxQueue);
}
/// <summary>
@@ -378,7 +381,7 @@ public class SerialPort : IDisposable
{
}
private void ReceiveThread()
private unsafe void ReceiveThread()
{
var buf = new byte[1];
@@ -413,16 +416,16 @@ public class SerialPort : IDisposable
eventMask = (uint)Marshal.ReadInt32(uMask);
if ((eventMask & Win32Com.EV_ERR) != 0)
{
uint errs;
if (Win32Com.ClearCommError(_hPort.DangerousGetHandle(), out errs, IntPtr.Zero))
CLEAR_COMM_ERROR_FLAGS errs;
if (PInvoke.ClearCommError(_hPort, &errs, null))
{
var s = new StringBuilder("UART Error: ", 40);
if ((errs & Win32Com.CE_FRAME) != 0) s = s.Append("Framing,");
if ((errs & Win32Com.CE_IOE) != 0) s = s.Append("IO,");
if ((errs & Win32Com.CE_OVERRUN) != 0) s = s.Append("Overrun,");
if ((errs & Win32Com.CE_RXOVER) != 0) s = s.Append("Receive Overflow,");
if ((errs & Win32Com.CE_RXPARITY) != 0) s = s.Append("Parity,");
if ((errs & Win32Com.CE_TXFULL) != 0) s = s.Append("Transmit Overflow,");
if (((uint)errs & Win32Com.CE_FRAME) != 0) s = s.Append("Framing,");
if (((uint)errs & Win32Com.CE_IOE) != 0) s = s.Append("IO,");
if (((uint)errs & Win32Com.CE_OVERRUN) != 0) s = s.Append("Overrun,");
if (((uint)errs & Win32Com.CE_RXOVER) != 0) s = s.Append("Receive Overflow,");
if (((uint)errs & Win32Com.CE_RXPARITY) != 0) s = s.Append("Parity,");
if (((uint)errs & Win32Com.CE_TXFULL) != 0) s = s.Append("Transmit Overflow,");
s.Length = s.Length - 1;
throw new CommPortException(s.ToString());
}