comm.c

这是一个开放源代码的与WINNT/WIN2K/WIN2003兼容的操作系统

			} else {
				RtlCopyMemory(lpCC->wcProviderData, lpComPort->wcProvChar, lpCC->dwProviderSize);
				ReturnValue = GetCommState(hCommDev, &lpCC->dcb);
			}
			*lpdwSize = lpCC->dwSize+lpCC->dwProviderSize;
		}
	}

	RtlFreeHeap(hProcessHeap, 0, lpComPort);
	return (ReturnValue);
}


/*
 * @implemented
 */
BOOL
STDCALL
GetCommMask(HANDLE hFile, LPDWORD lpEvtMask)
{
	DWORD dwBytesReturned;
        return DeviceIoControl(hFile, IOCTL_SERIAL_GET_WAIT_MASK,
		NULL, 0, lpEvtMask, sizeof(DWORD), &dwBytesReturned, NULL);
}


/*
 * @implemented
 */
BOOL
STDCALL
GetCommModemStatus(HANDLE hFile, LPDWORD lpModemStat)
{
	DWORD dwBytesReturned;

	return DeviceIoControl(hFile, IOCTL_SERIAL_GET_MODEMSTATUS,
		NULL, 0, lpModemStat, sizeof(DWORD), &dwBytesReturned, NULL);
}


/*
 * @implemented
 */
BOOL
STDCALL
GetCommProperties(HANDLE hFile, LPCOMMPROP lpCommProp)
{
	DWORD dwBytesReturned;
	return DeviceIoControl(hFile, IOCTL_SERIAL_GET_PROPERTIES, 0, 0,
		lpCommProp, sizeof(COMMPROP), &dwBytesReturned, 0);
}


/*
 * @implemented
 */
BOOL
STDCALL
GetCommState(HANDLE hFile, LPDCB lpDCB)
{
	BOOL result = FALSE;
	DWORD dwBytesReturned;

	SERIAL_BAUD_RATE BaudRate;
	SERIAL_HANDFLOW HandFlow;
	SERIAL_CHARS SpecialChars;
	SERIAL_LINE_CONTROL LineControl;

    DPRINT("GetCommState(%d, %p)\n", hFile, lpDCB);

	if (lpDCB == NULL) {
        DPRINT("ERROR: GetCommState() - NULL DCB pointer\n");
		return FALSE;
	}

	lpDCB->DCBlength = sizeof(DCB);

	/* FIXME: need to fill following fields (1 bit):
	 * fBinary: binary mode, no EOF check
	 * fParity: enable parity checking
	 * fOutX  : XON/XOFF out flow control
	 * fInX   : XON/XOFF in flow control
	 */

	result = DeviceIoControl(hFile, IOCTL_SERIAL_GET_BAUD_RATE,
			 NULL, 0, &BaudRate, sizeof(BaudRate),&dwBytesReturned, NULL);
	if (!NT_SUCCESS(result)) {
        DPRINT("ERROR: GetCommState() - DeviceIoControl(IOCTL_SERIAL_GET_BAUD_RATE) Failed.\n");
		return FALSE;
	}
    lpDCB->BaudRate = BaudRate.BaudRate;

	result = DeviceIoControl(hFile, IOCTL_SERIAL_GET_HANDFLOW,
			NULL, 0, &HandFlow, sizeof(HandFlow), &dwBytesReturned, NULL);
	if (!NT_SUCCESS(result)) {
        DPRINT("ERROR: GetCommState() - DeviceIoControl(IOCTL_SERIAL_GET_HANDFLOW) Failed.\n");
		return FALSE;
	}
	if (HandFlow.ControlHandShake & SERIAL_CTS_HANDSHAKE) {
    	lpDCB->fOutxCtsFlow = 1;
	}
    if (HandFlow.ControlHandShake & SERIAL_DSR_HANDSHAKE) {
    	lpDCB->fOutxDsrFlow = 1;
	}
    if (HandFlow.ControlHandShake & SERIAL_DTR_CONTROL) {
    	lpDCB->fDtrControl = 1;
	}
    if (HandFlow.ControlHandShake & SERIAL_DTR_HANDSHAKE) {
    	lpDCB->fDtrControl = 2;
	}
    if (HandFlow.ControlHandShake & SERIAL_RTS_CONTROL) {
    	lpDCB->fRtsControl = 1;
	}
    if (HandFlow.ControlHandShake & SERIAL_RTS_HANDSHAKE) {
    	lpDCB->fRtsControl = 2;
	}
    if (HandFlow.ControlHandShake & SERIAL_DSR_SENSITIVITY) {
    	lpDCB->fDsrSensitivity = 1;
	}
    if (HandFlow.ControlHandShake & SERIAL_ERROR_ABORT) {
    	lpDCB->fAbortOnError = 1;
	}

    if (HandFlow.FlowReplace & SERIAL_ERROR_CHAR) {
    	lpDCB->fErrorChar = 1;
	}
    if (HandFlow.FlowReplace & SERIAL_NULL_STRIPPING) {
    	lpDCB->fNull = 1;
	}
    if (HandFlow.FlowReplace & SERIAL_XOFF_CONTINUE) {
    	lpDCB->fTXContinueOnXoff = 1;
	}
    lpDCB->XonLim = (WORD)HandFlow.XonLimit;
    lpDCB->XoffLim = (WORD)HandFlow.XoffLimit;

	result = DeviceIoControl(hFile, IOCTL_SERIAL_GET_CHARS,
			NULL, 0, &SpecialChars, sizeof(SpecialChars), &dwBytesReturned, NULL);
	if (!NT_SUCCESS(result)) {
        DPRINT("ERROR: GetCommState() - DeviceIoControl(IOCTL_SERIAL_GET_CHARS) Failed.\n");
		return FALSE;
	}

    lpDCB->EofChar = SpecialChars.EofChar;
    lpDCB->ErrorChar = SpecialChars.ErrorChar;
    // = SpecialChars.BreakChar;
    lpDCB->EvtChar = SpecialChars.EventChar;
    lpDCB->XonChar = SpecialChars.XonChar;
    lpDCB->XoffChar = SpecialChars.XoffChar;

	result = DeviceIoControl(hFile, IOCTL_SERIAL_GET_LINE_CONTROL,
			NULL, 0, &LineControl, sizeof(LineControl), &dwBytesReturned, NULL);
	if (!NT_SUCCESS(result)) {
        DPRINT("ERROR: GetCommState() - DeviceIoControl(IOCTL_SERIAL_GET_LINE_CONTROL) Failed.\n");
		return FALSE;
	}
	lpDCB->StopBits = LineControl.StopBits;
	lpDCB->Parity = LineControl.Parity;
	lpDCB->ByteSize = LineControl.WordLength;
    DPRINT("GetCommState() - COMPLETED SUCCESSFULLY\n");
	return TRUE;
}


/*
 * @implemented
 */
BOOL
STDCALL
GetCommTimeouts(HANDLE hFile, LPCOMMTIMEOUTS lpCommTimeouts)
{
	DWORD dwBytesReturned;

	if (lpCommTimeouts == NULL) {
		return FALSE;
	}

	return DeviceIoControl(hFile, IOCTL_SERIAL_GET_TIMEOUTS,
							 NULL, 0,
							 lpCommTimeouts, sizeof(COMMTIMEOUTS),
							 &dwBytesReturned, NULL);
}


/*
 * @unimplemented
 */
BOOL
STDCALL
GetDefaultCommConfigW(LPCWSTR lpszName, LPCOMMCONFIG lpCC, LPDWORD lpdwSize)
{
	SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
	return FALSE;
}


/*
 * @unimplemented
 */
BOOL
STDCALL
GetDefaultCommConfigA(LPCSTR lpszName, LPCOMMCONFIG lpCC, LPDWORD lpdwSize)
{
	SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
	return FALSE;
}


/*
 * @implemented
 */
BOOL
STDCALL
PurgeComm(HANDLE hFile, DWORD dwFlags)
{
	DWORD dwBytesReturned;

        return DeviceIoControl(hFile, IOCTL_SERIAL_PURGE,
		&dwFlags, sizeof(DWORD), NULL, 0, &dwBytesReturned, NULL);
}


/*
 * @implemented
 */
BOOL
STDCALL
SetCommBreak(HANDLE hFile)
{
	DWORD dwBytesReturned;

        return DeviceIoControl(hFile, IOCTL_SERIAL_SET_BREAK_ON, NULL, 0, NULL, 0, &dwBytesReturned, NULL);
}


/*
 * @implemented
 */
BOOL
STDCALL
SetCommConfig(HANDLE hCommDev, LPCOMMCONFIG lpCC, DWORD dwSize)
{
	BOOL ReturnValue = FALSE;

	DPRINT("SetCommConfig(%d, %p, %d)\n", hCommDev, lpCC, dwSize);

	if(NULL == lpCC)
	{
		DPRINT("SetCommConfig() - invalid parameter\n");
		SetLastError(ERROR_INVALID_PARAMETER);
		ReturnValue = FALSE;
	}
	else
	{
		ReturnValue = SetCommState(hCommDev, &lpCC->dcb);
	}

	return ReturnValue;
}


/*
 * @implemented
 */
BOOL
STDCALL
SetCommMask(HANDLE hFile, DWORD dwEvtMask)
{
	DWORD dwBytesReturned;

        return DeviceIoControl(hFile, IOCTL_SERIAL_SET_WAIT_MASK,
		&dwEvtMask, sizeof(DWORD), NULL, 0, &dwBytesReturned, NULL);
}


/*
 * @implemented
 */
BOOL
STDCALL
SetCommState(HANDLE	hFile, LPDCB lpDCB)
{
	BOOL result = FALSE;
	DWORD dwBytesReturned;

	SERIAL_BAUD_RATE BaudRate;
	SERIAL_HANDFLOW HandFlow;
	SERIAL_CHARS SpecialChars;
	SERIAL_LINE_CONTROL LineControl;

    DPRINT("SetCommState(%d, %p) - ENTERED\n", hFile, lpDCB);

	if (lpDCB == NULL) {
        DPRINT("SetCommState() - ERROR: NULL DCB pointer passed\n");
		return FALSE;
	}

	BaudRate.BaudRate = lpDCB->BaudRate;
	result = DeviceIoControl(hFile, IOCTL_SERIAL_SET_BAUD_RATE,
		&BaudRate, sizeof(BaudRate), NULL, 0, &dwBytesReturned, NULL);
	if (!NT_SUCCESS(result)) {
        DPRINT("ERROR: SetCommState() - DeviceIoControl(IOCTL_SERIAL_SET_BAUD_RATE) Failed.\n");
		return FALSE;
	}
/*
#define SERIAL_DTR_MASK           ((ULONG)0x03)
#define SERIAL_DTR_CONTROL        ((ULONG)0x01)
#define SERIAL_DTR_HANDSHAKE      ((ULONG)0x02)
#define SERIAL_CTS_HANDSHAKE      ((ULONG)0x08)
#define SERIAL_DSR_HANDSHAKE      ((ULONG)0x10)
#define SERIAL_DCD_HANDSHAKE      ((ULONG)0x20)
#define SERIAL_OUT_HANDSHAKEMASK  ((ULONG)0x38)
#define SERIAL_DSR_SENSITIVITY    ((ULONG)0x40)
#define SERIAL_ERROR_ABORT        ((ULONG)0x80000000)
#define SERIAL_CONTROL_INVALID    ((ULONG)0x7fffff84)
 */
    HandFlow.ControlHandShake = 0;

	if (lpDCB->fOutxCtsFlow) {
        HandFlow.ControlHandShake |= SERIAL_CTS_HANDSHAKE;
	}
	if (lpDCB->fOutxDsrFlow) {
        HandFlow.ControlHandShake |= SERIAL_DSR_HANDSHAKE;
	}
	if (lpDCB->fDtrControl) {
        HandFlow.ControlHandShake |= SERIAL_DTR_CONTROL;
	}
	if (lpDCB->fDtrControl) {
        HandFlow.ControlHandShake |= SERIAL_DTR_HANDSHAKE;
	}
	if (lpDCB->fRtsControl) {
        HandFlow.ControlHandShake |= SERIAL_RTS_CONTROL;
	}
	if (lpDCB->fRtsControl) {
        HandFlow.ControlHandShake |= SERIAL_RTS_HANDSHAKE;
	}
	if (lpDCB->fDsrSensitivity) {
        HandFlow.ControlHandShake |= SERIAL_DSR_SENSITIVITY;
	}
	if (lpDCB->fAbortOnError) {
        HandFlow.ControlHandShake |= SERIAL_ERROR_ABORT;
	}
/*
#define SERIAL_AUTO_TRANSMIT      ((ULONG)0x01)
#define SERIAL_AUTO_RECEIVE       ((ULONG)0x02)
#define SERIAL_ERROR_CHAR         ((ULONG)0x04)
#define SERIAL_NULL_STRIPPING     ((ULONG)0x08)
#define SERIAL_BREAK_CHAR         ((ULONG)0x10)
#define SERIAL_RTS_MASK           ((ULONG)0xc0)
#define SERIAL_RTS_CONTROL        ((ULONG)0x40)
#define SERIAL_RTS_HANDSHAKE      ((ULONG)0x80)
#define SERIAL_TRANSMIT_TOGGLE    ((ULONG)0xc0)
#define SERIAL_XOFF_CONTINUE      ((ULONG)0x80000000)
#define SERIAL_FLOW_INVALID       ((ULONG)0x7fffff20)
 */
    HandFlow.FlowReplace = 0;
	if (lpDCB->fErrorChar) {
        HandFlow.FlowReplace |= SERIAL_ERROR_CHAR;
	}
	if (lpDCB->fNull) {
        HandFlow.FlowReplace |= SERIAL_NULL_STRIPPING;
	}
	if (lpDCB->fTXContinueOnXoff) {
        HandFlow.FlowReplace |= SERIAL_XOFF_CONTINUE;
	}
    HandFlow.XonLimit = lpDCB->XonLim;
    HandFlow.XoffLimit = lpDCB->XoffLim;
	result = DeviceIoControl(hFile, IOCTL_SERIAL_SET_HANDFLOW,
		&HandFlow, sizeof(HandFlow), NULL, 0, &dwBytesReturned, NULL);
	if (!NT_SUCCESS(result)) {
        DPRINT("ERROR: SetCommState() - DeviceIoControl(IOCTL_SERIAL_SET_HANDFLOW) Failed.\n");
		return FALSE;
	}

    SpecialChars.EofChar = lpDCB->EofChar;
    SpecialChars.ErrorChar = lpDCB->ErrorChar;
    SpecialChars.BreakChar = 0;
    SpecialChars.EventChar = lpDCB->EvtChar;
    SpecialChars.XonChar = lpDCB->XonChar;
    SpecialChars.XoffChar = lpDCB->XoffChar;
	result = DeviceIoControl(hFile, IOCTL_SERIAL_SET_CHARS,
		&SpecialChars, sizeof(SpecialChars), NULL, 0, &dwBytesReturned, NULL);
	if (!NT_SUCCESS(result)) {
        DPRINT("ERROR: SetCommState() - DeviceIoControl(IOCTL_SERIAL_SET_CHARS) Failed.\n");
		return FALSE;
	}

	LineControl.StopBits = lpDCB->StopBits;
	LineControl.Parity = lpDCB->Parity;
	LineControl.WordLength = lpDCB->ByteSize;
	result = DeviceIoControl(hFile, IOCTL_SERIAL_SET_LINE_CONTROL,
		&LineControl, sizeof(LineControl), NULL, 0, &dwBytesReturned, NULL);
	if (!NT_SUCCESS(result)) {
        DPRINT("ERROR: SetCommState() - DeviceIoControl(IOCTL_SERIAL_SET_LINE_CONTROL) Failed.\n");
		return FALSE;
	}

    DPRINT("SetCommState() - COMPLETED SUCCESSFULLY\n");
	return TRUE;
}


/*
 * @implemented
 */
BOOL
STDCALL
SetCommTimeouts(HANDLE hFile, LPCOMMTIMEOUTS lpCommTimeouts)
{
	DWORD dwBytesReturned;
	SERIAL_TIMEOUTS Timeouts;

	if (lpCommTimeouts == NULL) {
		return FALSE;
	}
	Timeouts.ReadIntervalTimeout = lpCommTimeouts->ReadIntervalTimeout;
	Timeouts.ReadTotalTimeoutMultiplier = lpCommTimeouts->ReadTotalTimeoutMultiplier;
	Timeouts.ReadTotalTimeoutConstant = lpCommTimeouts->ReadTotalTimeoutConstant;
	Timeouts.WriteTotalTimeoutMultiplier = lpCommTimeouts->WriteTotalTimeoutMultiplier;
	Timeouts.WriteTotalTimeoutConstant = lpCommTimeouts->WriteTotalTimeoutConstant;

        return DeviceIoControl(hFile, IOCTL_SERIAL_SET_TIMEOUTS,
		&Timeouts, sizeof(Timeouts), NULL, 0, &dwBytesReturned, NULL);
}


/*
 * @unimplemented
 */
BOOL
STDCALL
SetDefaultCommConfigA(LPCSTR lpszName, LPCOMMCONFIG lpCC, DWORD dwSize)
{
	SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
	return FALSE;
}


/*
 * @unimplemented
 */
BOOL
STDCALL
SetDefaultCommConfigW(LPCWSTR lpszName, LPCOMMCONFIG lpCC, DWORD dwSize)
{
	SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
	return FALSE;
}


/*
 * @implemented
 */
BOOL
STDCALL
SetupComm(HANDLE hFile, DWORD dwInQueue, DWORD dwOutQueue)
{
	DWORD dwBytesReturned;
	SERIAL_QUEUE_SIZE QueueSize;

    QueueSize.InSize = dwInQueue;
    QueueSize.OutSize = dwOutQueue;
    return DeviceIoControl(hFile, IOCTL_SERIAL_SET_QUEUE_SIZE,
		&QueueSize, sizeof(QueueSize), NULL, 0, &dwBytesReturned, NULL);
}


/*
 * @implemented
 */
BOOL
STDCALL
TransmitCommChar(HANDLE hFile, char cChar)
{
	DWORD dwBytesReturned;
	return DeviceIoControl(hFile, IOCTL_SERIAL_IMMEDIATE_CHAR,
		&cChar, sizeof(cChar), NULL, 0, &dwBytesReturned, NULL);
}


/*
 * @implemented
 */
BOOL
STDCALL
WaitCommEvent(HANDLE hFile, LPDWORD lpEvtMask, LPOVERLAPPED lpOverlapped)
{
	DWORD dwBytesReturned;

	if (lpEvtMask == NULL) {
		return FALSE;
	}

	return DeviceIoControl(hFile, IOCTL_SERIAL_WAIT_ON_MASK,
		NULL, 0, lpEvtMask, sizeof(DWORD), &dwBytesReturned, lpOverlapped);
}

/* EOF */