Question

怎样将USB设备连接到计算机

Answer 1

如果计算机上有U口的话，直接插在U口就可以了，如果没有，可以利用主板上的转接口，分出一个USB口，然后把该USB设备接到U口上就好了。

Answer 2

HANDLE MyHid::OpenDevice(bool isOverLapped)
{
GUID hidGuid;
HidD_GetHidGuid(&hidGuid);
hDevInfo = SetupDiGetClassDevs(&hidGuid,NULL,NULL,(DIGCF_PRESENT | DIGCF_DEVICEINTERFACE));
if (hDevInfo == INVALID_HANDLE_VALUE)
{
return INVALID_HANDLE_VALUE;
}
SP_DEVICE_INTERFACE_DATA devInfoData;
devInfoData.cbSize = sizeof (SP_DEVICE_INTERFACE_DATA);
int deviceNo = 0;
SetLastError(NO_ERROR);
while (GetLastError() != ERROR_NO_MORE_ITEMS)
{
if (SetupDiEnumInterfaceDevice (hDevInfo,0,&hidGuid,deviceNo,&devInfoData))
{
ULONG requiredLength = 0;
SetupDiGetInterfaceDeviceDetail(hDevInfo,&devInfoData,NULL,0,&requiredLength,NULL);

PSP_INTERFACE_DEVICE_DETAIL_DATA devDetail = (SP_INTERFACE_DEVICE_DETAIL_DATA*) malloc (requiredLength);
devDetail->cbSize = sizeof(SP_INTERFACE_DEVICE_DETAIL_DATA);
if(!SetupDiGetInterfaceDeviceDetail(hDevInfo,&devInfoData,devDetail,requiredLength,NULL,NULL))
{
free(devDetail);
SetupDiDestroyDeviceInfoList(hDevInfo);
return INVALID_HANDLE_VALUE;
}
if (isOverLapped)
{
hidHandle = CreateFile(devDetail->DevicePath,GENERIC_READ|GENERIC_WRITE,FILE_SHARE_READ|FILE_SHARE_WRITE,NULL,OPEN_EXISTING,FILE_FLAG_OVERLAPPED,NULL);
}
else
{
hidHandle = CreateFile(devDetail->DevicePath,GENERIC_READ|GENERIC_WRITE,FILE_SHARE_READ|FILE_SHARE_WRITE,NULL,OPEN_EXISTING,0,NULL);
}
free(devDetail);
if (hidHandle==INVALID_HANDLE_VALUE)
{
SetupDiDestroyDeviceInfoList(hDevInfo);
free(devDetail);
return INVALID_HANDLE_VALUE;
}
_HIDD_ATTRIBUTES hidAttributes;
if(!HidD_GetAttributes(hidHandle, &hidAttributes))
{
CloseHandle(hidHandle);
SetupDiDestroyDeviceInfoList(hDevInfo);
return INVALID_HANDLE_VALUE;
}
if (USB_VID == hidAttributes.VendorID&& USB_PID == hidAttributes.ProductID)
{
m_isDevicesOK=true;
break;
}
else
{
CloseHandle(hidHandle);
++deviceNo;
m_isDevicesOK=false;
}
}
}
SetupDiDestroyDeviceInfoList(hDevInfo);
return hidHandle;
}

#define USB_VID 0x08fe
#define USB_PID 0x0003

//自定义的设备号.

你可以在设备管理器里面找到你自己的需要的 ID 然后 但看实例句柄.

你要进行操作的话 需要DDK 里面的 几个文件.需要的话 我传给你.

Answer 3

直接接到USB口，如果需指定的软件，则下载软件运行

Answer 4

插入