155 lines
6.5 KiB
C#
Executable File
155 lines
6.5 KiB
C#
Executable File
using System;
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using System.Runtime.InteropServices;
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namespace PInvokeSerialPort.Win32PInvoke
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{
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internal class Win32Com
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{
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/// <summary>
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/// Opening Testing and Closing the Port Handle.
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/// </summary>
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[DllImport("kernel32.dll", SetLastError = true)]
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internal static extern IntPtr CreateFile(String lpFileName, UInt32 dwDesiredAccess, UInt32 dwShareMode,
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IntPtr lpSecurityAttributes, UInt32 dwCreationDisposition, UInt32 dwFlagsAndAttributes,
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IntPtr hTemplateFile);
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//Constants for errors:
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internal const UInt32 ERROR_FILE_NOT_FOUND = 2;
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internal const UInt32 ERROR_INVALID_NAME = 123;
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internal const UInt32 ERROR_ACCESS_DENIED = 5;
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internal const UInt32 ERROR_IO_PENDING = 997;
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//Constants for return value:
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internal const Int32 INVALID_HANDLE_VALUE = -1;
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//Constants for dwFlagsAndAttributes:
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internal const UInt32 FILE_FLAG_OVERLAPPED = 0x40000000;
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//Constants for dwCreationDisposition:
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internal const UInt32 OPEN_EXISTING = 3;
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//Constants for dwDesiredAccess:
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internal const UInt32 GENERIC_READ = 0x80000000;
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internal const UInt32 GENERIC_WRITE = 0x40000000;
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[DllImport("kernel32.dll")]
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internal static extern Boolean CloseHandle(IntPtr hObject);
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[DllImport("kernel32.dll")]
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internal static extern Boolean GetHandleInformation(IntPtr hObject, out UInt32 lpdwFlags);
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/// <summary>
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/// Manipulating the communications settings.
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/// </summary>
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[DllImport("kernel32.dll")]
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internal static extern Boolean GetCommState(IntPtr hFile, ref DCB lpDCB);
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[DllImport("kernel32.dll")]
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internal static extern Boolean GetCommTimeouts(IntPtr hFile, out COMMTIMEOUTS lpCommTimeouts);
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[DllImport("kernel32.dll")]
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internal static extern Boolean BuildCommDCBAndTimeouts(String lpDef, ref DCB lpDCB, ref COMMTIMEOUTS lpCommTimeouts);
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[DllImport("kernel32.dll")]
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internal static extern Boolean SetCommState(IntPtr hFile, [In] ref DCB lpDCB);
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[DllImport("kernel32.dll")]
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internal static extern Boolean SetCommTimeouts(IntPtr hFile, [In] ref COMMTIMEOUTS lpCommTimeouts);
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[DllImport("kernel32.dll")]
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internal static extern Boolean SetupComm(IntPtr hFile, UInt32 dwInQueue, UInt32 dwOutQueue);
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/// <summary>
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/// Reading and writing.
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/// </summary>
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[DllImport("kernel32.dll", SetLastError = true)]
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internal static extern Boolean WriteFile(IntPtr fFile, Byte[] lpBuffer, UInt32 nNumberOfBytesToWrite,
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out UInt32 lpNumberOfBytesWritten, IntPtr lpOverlapped);
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[DllImport("kernel32.dll")]
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internal static extern Boolean SetCommMask(IntPtr hFile, UInt32 dwEvtMask);
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// Constants for dwEvtMask:
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internal const UInt32 EV_RXCHAR = 0x0001;
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internal const UInt32 EV_RXFLAG = 0x0002;
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internal const UInt32 EV_TXEMPTY = 0x0004;
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internal const UInt32 EV_CTS = 0x0008;
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internal const UInt32 EV_DSR = 0x0010;
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internal const UInt32 EV_RLSD = 0x0020;
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internal const UInt32 EV_BREAK = 0x0040;
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internal const UInt32 EV_ERR = 0x0080;
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internal const UInt32 EV_RING = 0x0100;
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internal const UInt32 EV_PERR = 0x0200;
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internal const UInt32 EV_RX80FULL = 0x0400;
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internal const UInt32 EV_EVENT1 = 0x0800;
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internal const UInt32 EV_EVENT2 = 0x1000;
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[DllImport("kernel32.dll", SetLastError = true)]
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internal static extern Boolean WaitCommEvent(IntPtr hFile, IntPtr lpEvtMask, IntPtr lpOverlapped);
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[DllImport("kernel32.dll")]
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internal static extern Boolean CancelIo(IntPtr hFile);
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[DllImport("kernel32.dll", SetLastError = true)]
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internal static extern Boolean ReadFile(IntPtr hFile, [Out] Byte[] lpBuffer, UInt32 nNumberOfBytesToRead,
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out UInt32 nNumberOfBytesRead, IntPtr lpOverlapped);
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[DllImport("kernel32.dll")]
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internal static extern Boolean TransmitCommChar(IntPtr hFile, Byte cChar);
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/// <summary>
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/// Control port functions.
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/// </summary>
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[DllImport("kernel32.dll")]
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internal static extern Boolean EscapeCommFunction(IntPtr hFile, UInt32 dwFunc);
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// Constants for dwFunc:
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internal const UInt32 SETXOFF = 1;
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internal const UInt32 SETXON = 2;
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internal const UInt32 SETRTS = 3;
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internal const UInt32 CLRRTS = 4;
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internal const UInt32 SETDTR = 5;
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internal const UInt32 CLRDTR = 6;
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internal const UInt32 RESETDEV = 7;
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internal const UInt32 SETBREAK = 8;
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internal const UInt32 CLRBREAK = 9;
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[DllImport("kernel32.dll")]
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internal static extern Boolean GetCommModemStatus(IntPtr hFile, out UInt32 lpModemStat);
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// Constants for lpModemStat:
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internal const UInt32 MS_CTS_ON = 0x0010;
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internal const UInt32 MS_DSR_ON = 0x0020;
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internal const UInt32 MS_RING_ON = 0x0040;
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internal const UInt32 MS_RLSD_ON = 0x0080;
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/// <summary>
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/// Status Functions.
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/// </summary>
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[DllImport("kernel32.dll", SetLastError = true)]
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internal static extern Boolean GetOverlappedResult(IntPtr hFile, IntPtr lpOverlapped,
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out UInt32 nNumberOfBytesTransferred, Boolean bWait);
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[DllImport("kernel32.dll")]
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internal static extern Boolean ClearCommError(IntPtr hFile, out UInt32 lpErrors, IntPtr lpStat);
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[DllImport("kernel32.dll")]
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internal static extern Boolean ClearCommError(IntPtr hFile, out UInt32 lpErrors, out COMSTAT cs);
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//Constants for lpErrors:
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internal const UInt32 CE_RXOVER = 0x0001;
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internal const UInt32 CE_OVERRUN = 0x0002;
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internal const UInt32 CE_RXPARITY = 0x0004;
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internal const UInt32 CE_FRAME = 0x0008;
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internal const UInt32 CE_BREAK = 0x0010;
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internal const UInt32 CE_TXFULL = 0x0100;
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internal const UInt32 CE_PTO = 0x0200;
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internal const UInt32 CE_IOE = 0x0400;
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internal const UInt32 CE_DNS = 0x0800;
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internal const UInt32 CE_OOP = 0x1000;
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internal const UInt32 CE_MODE = 0x8000;
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[DllImport("kernel32.dll")]
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internal static extern Boolean GetCommProperties(IntPtr hFile, out COMMPROP cp);
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}
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} |