USB HID设备读取bulk批量数据不成功

不能坚持--这辈子你将毫无建树 2013-07-08 06:01:03

写的是触摸屏的驱动，主要流程如下：
1、



NInputEvtDevicePrepareHardware(

    IN WDFDEVICE    Device,

    IN WDFCMRESLIST ResourceList,

    IN WDFCMRESLIST ResourceListTranslated

    )

{

	 NTSTATUS                            status = STATUS_SUCCESS;

    PDEVICE_EXTENSION                   devContext = NULL;

    WDF_USB_DEVICE_SELECT_CONFIG_PARAMS configParams;

    WDF_OBJECT_ATTRIBUTES               attributes;

    PUSB_DEVICE_DESCRIPTOR              usbDeviceDescriptor = NULL;



    UNREFERENCED_PARAMETER(ResourceList);

    UNREFERENCED_PARAMETER(ResourceListTranslated);



    PAGED_CODE ();







    devContext = GetDeviceContext(Device);

  

        if (!NT_SUCCESS(status)) {

    //        TErr(

				//"WdfUsbTargetDeviceCreate failed 0x%x\n", 

				//status);

            return status;

        }

    }



    WDF_USB_DEVICE_SELECT_CONFIG_PARAMS_INIT_SINGLE_INTERFACE( &configParams);



    status = WdfUsbTargetDeviceSelectConfig(devContext->Device,

                                        WDF_NO_OBJECT_ATTRIBUTES,

                                        &configParams);

    if(!NT_SUCCESS(status)) {

		   //TErr(

			  // "WdfUsbTargetDeviceSelectConfig failed %!STATUS!\n",

			  // status );

        return status;

    }



    devContext->Interface =

                configParams.Types.SingleInterface.ConfiguredUsbInterface;



    //

    // Get the device descriptor and store it in device context

    //

    WDF_OBJECT_ATTRIBUTES_INIT(&attributes);

    attributes.ParentObject = Device;

    status = WdfMemoryCreate(

                             &attributes,

                             NonPagedPool,

                             0,

                             sizeof(USB_DEVICE_DESCRIPTOR),

                             &devContext->DeviceDescriptor,

                             &usbDeviceDescriptor

                             );



    if(!NT_SUCCESS(status)) {

   //     TErr(

			//"WdfMemoryCreate for Device Descriptor failed %!STATUS!\n",

   //         status);

        return status;

    }



    WdfUsbTargetDeviceGetDeviceDescriptor(

          devContext->Device,

          usbDeviceDescriptor

          );



		// 获取Pipe句柄

	status = GetUsbPipes(devContext);

	if(!NT_SUCCESS(status))

		return status;



 /*   TErr(

        "HidFx2EvtDevicePrepareHardware Exit, Status:0x%x\n", 

		status);*/



    return status;

}

2、windows7中自带的触摸驱动模块会发送IOCTL_HID_READ_REPORT的 IRP_MJ_INTERNAL DEVICE_CONTROL请求来读数据。

    

case IOCTL_HID_READ_REPORT:



        status = NInputReadReport(devContext, Request, &RequestPending);



        break;

3、读数据模块

NTSTATUS INTERNAL

UsbAsyncReadData(    

	__in PDEVICE_EXTENSION      DevContext,

    __in ULONG                  BuffLen,

	__in PFN_WDF_REQUEST_COMPLETION_ROUTINE CompletionRoutine,

	__in  WDFREQUEST        Request



  )

{

    NTSTATUS            status = STATUS_SUCCESS;

    WDFUSBPIPE BulkInputPipe;

	WDFMEMORY hMem;



	WDFREQUEST                  USBRequest = {0};

    PUCHAR                      ReadBuffer = NULL;

    BOOLEAN                     SentRequest = FALSE;

	WDF_OBJECT_ATTRIBUTES       RequestAttributes = {0};

	WDFIOTARGET                 UsbIoTarget;

	WDFIOTARGET                 SerialIoTarget;

	WDFDEVICE                   hDevice;





	//可能有问题

         hDevice = WdfIoQueueGetDevice(DevContext->PingPongQueue);

	BulkInputPipe = GetBulkPipe(TRUE, hDevice);

	UsbIoTarget=WdfUsbTargetPipeGetIoTarget(BulkInputPipe);

	SerialIoTarget=DevContext->IoTarget;

	USBRequest=Request;



	



	 //status = WdfRequestCreate(WDF_NO_OBJECT_ATTRIBUTES,

  //                             UsbIoTarget,

  //                             &USBRequest);

   if(!NT_SUCCESS(status)){

        

        TErr(("WdfRequestCreate failed.status=0x%x!", status));

        return status;

    }

    //创建新的request    //WDF_OBJECT_ATTRIBUTES_INIT(&RequestAttributes);

    //RequestAttributes.ParentObject = USBRequest;

    //status = WdfMemoryCreate(&RequestAttributes,

    //             NonPagedPool,

    //             0,

    //             (size_t)BuffLen,

    //             &hMem,

    //             &ReadBuffer);

	 if(NT_SUCCESS(status)){

        

 

    //RtlZeroMemory(ReadBuffer, BuffLen);

	if(NULL == BulkInputPipe)

	{

		WdfRequestComplete(USBRequest, STATUS_UNSUCCESSFUL);

		return status;

	 }

	status = WdfRequestRetrieveOutputMemory(USBRequest, &hMem);

	if(!NT_SUCCESS(status))

	{

		//KDBG(DPFLTR_INFO_LEVEL, "WdfRequestRetrieveOutputMemory failed with status 0x%0.8x!!!", status);

           WdfRequestComplete(USBRequest, status);

           return status;		    

	 }

	// 和写一样，利用新建的对象访问

	// 除了重利用外，也可以新建一个Request对象。新建的方法在本工程其他地方用得较多。

	status = WdfUsbTargetPipeFormatRequestForRead(BulkInputPipe, USBRequest, hMem, NULL);

	 if(!NT_SUCCESS(status))

	  {

			//KDBG(DPFLTR_INFO_LEVEL, "WdfUsbTargetPipeFormatRequestForRead failed with status 0x%08x\n", status);

		    WdfRequestComplete(USBRequest, status);

		     return status;        

	  }

	WdfRequestSetCompletionRoutine(USBRequest, CompletionRoutine,BulkInputPipe );

        //此处发送成功，但是request没有返回，且获取不到params值	if(FALSE == WdfRequestSend(USBRequest, WdfUsbTargetPipeGetIoTarget(BulkInputPipe), NULL))

	 {

		 status = WdfRequestGetStatus(USBRequest);

		  //KDBG(DPFLTR_INFO_LEVEL, "WdfRequestSend failed with status 0x%08x\n", status);

		  WdfRequestComplete(USBRequest, status);

		  WdfObjectDelete(USBRequest);

	}

  }

    TExit(Func, ("=%x", status));

    return status;    

}