usb.~cpp

可以检测你开发的USB设备是否OK的一个程序

//---------------------------------------------------------------------------

#pragma package(smart_init)
 //---------------------------------------------------------------------------

#pragma hdrstop

#include "windows.h"
#include "ezusbsys.h"
#include "usb.h"

#define VR_SEND_COMMAND     0xa2 // Send Command
#define VR_RESET_FIFO       0xa3 // Get Image

//---------------------------------------------------------------------------
bool TUSB::OpenDevice()
{
    hDevice = CreateFile("\\\\.\\Ezusb-0",
                        GENERIC_WRITE,
                        FILE_SHARE_WRITE,
                        NULL,
                        OPEN_EXISTING,
                        0,
                        0);

    if (hDevice == INVALID_HANDLE_VALUE)
        return false;
    else
        return true;
}

//---------------------------------------------
bool TUSB::CloseDevice()
{
  if (hDevice != INVALID_HANDLE_VALUE)
  {

        CloseHandle(hDevice);
        return true;
  }
  else
        return false;
}

//---------------------------------------------
bool TUSB::SendCommand(unsigned char command)
{
    bool                                    Success ;
    VENDOR_OR_CLASS_REQUEST_CONTROL         VR;
    unsigned long                           nBytes;

    if (hDevice != INVALID_HANDLE_VALUE )
    {
      VR.direction = 0;
      VR.requestType = 2;
      VR.recepient = 0;
      VR.request = VR_SEND_COMMAND;
      VR.requestTypeReservedBits = 0;
      VR.value = command;

      Success = DeviceIoControl (hDevice,
                    IOCTL_EZUSB_VENDOR_OR_CLASS_REQUEST,
                    &VR,
                    sizeof(VENDOR_OR_CLASS_REQUEST_CONTROL),
                    NULL,
                    0,
                    &nBytes,
                    NULL);
    }

    return Success;
}

bool TUSB::ResetFifo()
{
    bool                                    Success ;
    VENDOR_OR_CLASS_REQUEST_CONTROL         VR;
    unsigned long                           nBytes;

    if (hDevice != INVALID_HANDLE_VALUE )
    {
      VR.direction = 0;
      VR.requestType = 2;
      VR.recepient = 0;
      VR.request = VR_RESET_FIFO;
      VR.requestTypeReservedBits = 0;

      Success = DeviceIoControl (hDevice,
                    IOCTL_EZUSB_VENDOR_OR_CLASS_REQUEST,
                    &VR,
                    sizeof(VENDOR_OR_CLASS_REQUEST_CONTROL),
                    NULL,
                    0,
                    &nBytes,
                    NULL);
    }

    return Success;
}
bool TUSB::GetImage(unsigned char *buf)
{
    bool                                    Success ;
    VENDOR_OR_CLASS_REQUEST_CONTROL         VR;
    BULK_TRANSFER_CONTROL                   BR;
    unsigned long                           nBytes;

    BR.pipeNum = 2;

    Success = DeviceIoControl (hDevice,
                IOCTL_EZUSB_BULK_READ,
                &BR,
                sizeof(BULK_TRANSFER_CONTROL),
                &buf[0],
                32768,
	            &nBytes,
	            NULL);

    Success = DeviceIoControl (hDevice,
	            IOCTL_EZUSB_BULK_READ,
	            &BR,
	            sizeof(BULK_TRANSFER_CONTROL),
	            &buf[32768],
                32768,
	            &nBytes,
	            NULL);

    return Success;
}

bool TUSB::GetCardResponse(unsigned char *buf)
{
    bool                                    Success ;
    VENDOR_OR_CLASS_REQUEST_CONTROL         VR;
    BULK_TRANSFER_CONTROL                   BR;
    unsigned long                           nBytes;

    BR.pipeNum = 3;      //Ep8

    Success = DeviceIoControl (hDevice,
                IOCTL_EZUSB_BULK_READ,
                &BR,
                sizeof(BULK_TRANSFER_CONTROL),
                &buf[0],
                512,
	        &nBytes,
	        NULL);

    return Success;
}

bool TUSB::SendCardCommand(unsigned char *buf)
{
    bool                                    Success ;
    VENDOR_OR_CLASS_REQUEST_CONTROL         VR;
    BULK_TRANSFER_CONTROL                   BR;
    unsigned long                           nBytes;

    BR.pipeNum = 1;      //Ep4
    
    Success = DeviceIoControl (hDevice,
                IOCTL_EZUSB_BULK_WRITE,
                &BR,
                sizeof(BULK_TRANSFER_CONTROL),
                &buf[0],
                512,
	        &nBytes,
	        NULL);


    return Success;
}