1
我想用我的USB驱动程序进行通信。我能够获得一个句柄,但一旦我用DeviceIoControl
失败,GetLastError()
说,错误是不正确的函数。我难以理解如何进行调试。我正在使用XP 32位机器。为什么DeviceIoControl的失败,“不正确的函数”
Handle = CREATEFILE( DevicePath1,
GENERIC_READ | GENERIC_WRITE,
FILE_SHARE_READ,
NULL,
OPEN_EXISTING,
FILE_FLAG_OVERLAPPED,
NULL);
if (INVALID_HANDLE_VALUE == Handle)
{
printf("INVALIDHANDLE USB\n");
return PHNFCSTVAL(CID_NFC_DAL, NFCSTATUS_INVALID_DEVICE);
}
else
{
// Call device IO Control interface (USB_TEST_IOCTL_VERSION_NUMBER) in driver
if (!DeviceIoControl(Handle,
USB_TEST_IOCTL_VERSION_NUMBER,
NULL,
0,
version,
sizeof(version),
&lenght,
NULL)
)
{
//Display the last error killing my program
void* lpBuffer;
FormatMessage(FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM,
NULL,
GetLastError(),
MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), // Default language
(LPTSTR) &lpBuffer,
0,
NULL);
printf(" Version: %x\n", version);
printf("USB_TEST_IOCTL_VERSION_NUMBER, %x\n", USB_TEST_IOCTL_VERSION_NUMBER);
printf(" &lenght: %x\n", &lenght);
MessageBox(NULL, (LPCTSTR)lpBuffer, TEXT("LastRrror"), MB_OK);
LocalFree(lpBuffer);
printf("USB HIO Control interface FAIL\n");
return PHNFCSTVAL(CID_NFC_DAL, NFCSTATUS_INVALID_DEVICE);
,驱动程序代码是在哪里呢? – Xearinox 2012-08-12 13:45:14
@Xearinox如果我下正常站在你,我的控制代码'#定义USB_TEST_IOCTL_VERSION_NUMBER CTL_CODE(FILE_DEVICE_UNKNOWN,0x807,METHOD_BUFFERED,FILE_ANY_ACCESS)''那里CTL_CODE' is'#定义CTL_CODE(设备类型,函数,方法,访问)(\ ( (设备类型)<< 16)|((访问)<< 14)|((功能)<< 2)|(方法)\ )'这是传递给设备驱动程序,并最终于USB。我的驱动程序位于WINDOWS \ system32 \ DRIVERS \ myDriver.sys' – IPA8654 2012-08-12 21:43:18
OK。但是,在驱动程序中响应这个IOCTL的代码在哪里? – Xearinox 2012-08-12 21:58:04