usbhidiocdlg.cpp

VC下的USB编程

		ReadFile
		Returns:
		A report in InputReport.
		The number of bytes actually read in BytesRead.
		Requires: 
		A device handle returned by CreateFile.
		The report length returned by HidP_GetCaps in Capabilities.InputReportByteLength.
		*/
		ActualBytesRead = BytesRead;
		Result = ReadFile \
			(ReadHandle, \
			InputReport, \
			Capabilities.InputReportByteLength, \
			&BytesRead, \
			NULL);


		ActualBytesRead = BytesRead;

		if (Result == 0)
		{
			//The ReadFile failed, so close the handle, display a message,
			//and set DeviceDetected to FALSE so the next attempt will look for the device.
			CloseHandle(ReadHandle);
			DisplayData("Can't read from device");
			DeviceDetected = FALSE;
		}
		DisplayCurrentTime();
		DisplayInputReport();
	}
	//Exit the loop if the device is no longer detected or the user has clicked the close button.
	while ((DeviceDetected == TRUE) && (ApplicationActive == TRUE));

    return 0;
}
#include "math.h"
static int i = 0;
void CUsbhidiocDlg::WriteReport()
{
	//Send a report to the device.

	DWORD	BytesWritten = 0;
	INT		Index0 =0,Index1 =0,Index2 =0,Index3 =0,Index4 =0;
	CHAR	OutputReport[5];
	ULONG	Result;
	CString	strBytesWritten = "";

	//The first byte is the report number.
	OutputReport[0]=0;
	OutputReport[1]=0;
	OutputReport[2]=0x0f;
	OutputReport[3]=0x0f;

	//Get the values from the combo boxes.
	OutputReport[0]=m_cboByteToSend0.GetCurSel();
	OutputReport[1]=m_cboByteToSend1.GetCurSel();
	OutputReport[2]=m_cboByteToSend2.GetCurSel();
	OutputReport[3]=m_cboByteToSend3.GetCurSel();
	OutputReport[4]=m_cboByteToSend4.GetCurSel();



	//Get the bytes to send from the combo boxes.
	
	//If Autoincrement is checked, increment the selection.
	if (m_cbutAutoIncrement0.GetCheck()>0)
	{
		Index0=m_cboByteToSend0.GetCurSel();
		Index0=Index0+1;
		m_cboByteToSend0.SetCurSel(Index0);
		
	}

	if (m_cbutAutoIncrement1.GetCheck()>0)
	{
		Index1=m_cboByteToSend1.GetCurSel();
		Index1=Index1+1;
		m_cboByteToSend1.SetCurSel(Index1);
		
	}

	if (m_cbutAutoIncrement2.GetCheck()>0)
	{
		Index2=m_cboByteToSend2.GetCurSel();
		Index2=Index2+1;
		m_cboByteToSend2.SetCurSel(Index2);
		
	}

	if (m_cbutAutoIncrement3.GetCheck()>0)
	{
		Index3=m_cboByteToSend3.GetCurSel();
		Index3=Index3+1;
		m_cboByteToSend3.SetCurSel(Index3);
		
	}

	if (m_cbutAutoIncrement4.GetCheck()>0)
	{
		Index4=m_cboByteToSend4.GetCurSel();
		Index4=Index4+1;
		m_cboByteToSend4.SetCurSel(Index4);
		
	}



	//OutputReport[3]=pow(2,i);
	i++;
	if (i==1)
	{
		OutputReport[1]=0x30;
	}

	if (i==2)
	{
		OutputReport[1]=0x00;
		i=0;
	}
	
	/*
	WriteFile
	Sends a report to the device.
	Returns: success or failure.
	Requires:
	The device handle returned by CreateFile.
	The Output Report length returned by HidP_GetCaps,
	A report to send.
	*/

	Result = WriteFile \
		(DeviceHandle, \
		OutputReport, \
		Capabilities.OutputReportByteLength, \
		&BytesWritten, \
		NULL);

	if (Result == 0)
	{
		//The WriteFile failed, so close the handle, display a message,
		//and set DeviceDetected to FALSE so the next attempt will look for the device.
		CloseHandle(DeviceHandle);
		DisplayData("Can't write to device");
		DeviceDetected = FALSE;
	}
	
	//Display the result of the API call and the report bytes.
	DisplayLastError("WriteFile: ");
	strBytesWritten.Format("%s%d", "Bytes Written: ", BytesWritten); 
	DisplayData(strBytesWritten);
}

/*
Display-related routines
*/

// 二进制倍
union Abb
{
	char data;
	struct wei 
	{
		UINT a1:1;
		UINT a2:1;
		UINT a3:1;
		UINT a4:1;
		UINT a5:1;
		UINT a6:1;
		UINT a7:1;
		UINT a8:1;
	}X;
};

bool rec;
void CUsbhidiocDlg::DisplayInputReport()
{
	USHORT	ByteNumber;
	CString	MessageToDisplay = "";
	CHAR	ReceivedByte;
	//Display the number of bytes read.
	MessageToDisplay.Format("%s%d", "Number of Bytes Read: ", ActualBytesRead); 
	DisplayData(MessageToDisplay);
	
	//Display the received data in the log and the Bytes Received List boxes.
	//Start at the top of the List Box.
	//m_BytesReceived.ResetContent();
	/*
	if (InputReport[2]==0x51)
	{
		rec=!rec;
	}
	//Step through the received bytes and display each.
	//for (ByteNumber=0; ByteNumber < Capabilities.InputReportByteLength; ByteNumber++)
	if (rec && (InputReport[2]!=0x11) && (InputReport[1]!=0x00))*/
//	{
//		if (InputReport[2]==0x51)
		//		{
		//			m_BytesReceived.ResetContent();
		//		}
		
// 		CString strRead;
// 		for (ByteNumber=0; ByteNumber < Capabilities.InputReportByteLength; ByteNumber++)
// 		{
// 			ReceivedByte = InputReport[ByteNumber];
// 			//Display it.
// 			CString strByteRead;
// 			//Convert the value to a 2-character Cstring.
// 			strByteRead.Format("%02X", ReceivedByte);
// 			strByteRead = strByteRead.Right(2); 
// 			strRead+=strByteRead+" ";
// 		}

	{
		CString strRead, strByteRead;	// 字节字符串
		Abb unByte1, unByte2;
		for (ByteNumber=0; ByteNumber < Capabilities.InputReportByteLength; ByteNumber++)
		{
			ReceivedByte = InputReport[ByteNumber];
			//Display it.
			CString strByteRead;
			//Convert the value to a 2-character Cstring.
			strByteRead.Format("%02X", ReceivedByte);
			strByteRead = strByteRead.Right(2);
			strRead+=strByteRead+" ";

			if ( !(ByteNumber>0 && ByteNumber<3) )
				continue;
			// 得到第二个字节和第三个字节 
			ByteNumber == 1 ? unByte1.data = InputReport[ByteNumber] : unByte2.data = InputReport[ByteNumber];		
		}
		strByteRead.Format("  %d%d%d%d %d%d%d%d ",		// 字节顺序
			unByte1.X.a7, unByte1.X.a8, 
			unByte2.X.a1, unByte2.X.a2, unByte2.X.a3,
			unByte2.X.a5, unByte2.X.a6, unByte2.X.a7
			);
		
		strRead += strByteRead;									// 连接二个串

		//Display the value in the Bytes Received List Box.

		CTime curTime = CTime::GetCurrentTime();
		CString CurrentTime = curTime.Format( "%H:%M:%S" );

		m_BytesReceived.InsertString(-1, strRead+"  "+CurrentTime);
		m_BytesReceived.SetCurSel(m_BytesReceived.GetCount()-1); 
		/*
		//Get a byte.
		ByteNumber=1;
		{
			CTime curTime = CTime::GetCurrentTime();
			CString CurrentTime = curTime.Format( "%H:%M:%S" );
			ReceivedByte = InputReport[ByteNumber];
			//Display it.
			CString strByteRead;
			//Convert the value to a 2-character Cstring.
			strByteRead.Format("%02X", ReceivedByte);
			strByteRead = strByteRead.Right(2); 
			//Display the value in the Bytes Received List Box.
			m_BytesReceived.InsertString(-1, strByteRead+"  "+CurrentTime);
			//DisplayReceivedData(ReceivedByte);
		}
		ByteNumber=2;
		
		{
			ReceivedByte = InputReport[ByteNumber];
			//Display it.
			DisplayReceivedData(ReceivedByte);
		}
		*/

	}
}

void CUsbhidiocDlg::DisplayCurrentTime()
{
	//Get the current time and date and display them in the log List Box.
	CTime curTime = CTime::GetCurrentTime();
	CString CurrentTime = curTime.Format( "%H:%M:%S, %B %d, %Y" );
	DisplayData(CurrentTime);
}

void CUsbhidiocDlg::DisplayData(CString cstrDataToDisplay)
{
	//Display data in the log List Box
	USHORT	Index;
	Index=m_ResultsList.InsertString(-1, (LPCTSTR)cstrDataToDisplay);
	ScrollToBottomOfListBox(Index);
}

void CUsbhidiocDlg::DisplayLastError(CString Operation)
{
	//Display a message and the last error in the log List Box. 
	LPVOID lpMsgBuf;
	USHORT Index = 0;
	CString	strLastError = "";
	FormatMessage( 
		FORMAT_MESSAGE_ALLOCATE_BUFFER | 
		FORMAT_MESSAGE_FROM_SYSTEM | 
		FORMAT_MESSAGE_IGNORE_INSERTS,
		NULL,
		GetLastError(),
		MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
		(LPTSTR) &lpMsgBuf,
		0,
		NULL 
	);

	//Display the last error.
	strLastError = Operation + (LPCTSTR)lpMsgBuf; 
	//Trim CR/LF from the error message.
	strLastError.TrimRight(); 
	Index = m_ResultsList.InsertString(-1, strLastError);
	ScrollToBottomOfListBox(Index);
	LocalFree(lpMsgBuf); 
}

void CUsbhidiocDlg::DisplayReceivedData(char ReceivedByte)
{
	//Display data received from the device.
	CString	strByteRead;
	//Convert the value to a 2-character Cstring.
	strByteRead.Format("%02X", ReceivedByte);
	strByteRead = strByteRead.Right(2); 
	//Display the value in the Bytes Received List Box.
	m_BytesReceived.InsertString(-1, strByteRead);
	//Display the value in the log List Box (optional).
	//MessageToDisplay.Format("%s%s", "Byte 0: ", strByteRead); 
	//DisplayData(MessageToDisplay);
}

void CUsbhidiocDlg::OnChangeResults() 
{
	// TODO: If this is a RICHEDIT control, the control will not
	// send this notification unless you override the CDialog::OnInitDialog()
	// function and call CRichEditCtrl().SetEventMask()
	// with the ENM_CHANGE flag ORed into the mask.
	
	// TODO: Add your control notification handler code here
}

void CUsbhidiocDlg::ScrollToBottomOfListBox(USHORT Index)
{
	/* 
	Scroll to the bottom of the list box. 
	To do so, add a line and set it as the current selection,
	possibly scrolling the window.
	Then deselect the line, 
	leaving the list box scrolled to the bottom with nothing selected.
	*/

	m_ResultsList.SetCurSel( Index );
	m_ResultsList.SetCurSel( -1 );
}

/*
Misc. routines.
*/

void CUsbhidiocDlg::OnTimer(UINT nIDEvent) 
{
	//The timer event.
	//Read and Write one pair of reports.
	ReadAndWriteToDevice();

	CDialog::OnTimer(nIDEvent);
}

void CUsbhidiocDlg::OnOK() 
{
	CDialog::OnOK();
}





void CUsbhidiocDlg::OnDblclkList2() 
{
	// TODO: Add your control notification handler code here
	m_ResultsList.ResetContent();
}