deviceop.cpp

D12和单片机通讯的电脑部分通讯程序.用于测试是否连接通畅.

//Do not modify this file.

/*++

Copyright (c) 1997-1998  Microsoft Corporation

Module Name:

    RWBulk.c

Abstract:

    Console test app for BulkUsb.sys driver

Environment:

    user mode only

Notes:

  THIS CODE AND INFORMATION IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY
  KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
  IMPLIED WARRANTIES OF MERCHANTABILITY AND/OR FITNESS FOR A PARTICULAR
  PURPOSE.

  Copyright (c) 1997-1998 Microsoft Corporation.  All Rights Reserved.


Revision History:

	11/17/97: created

--*/
#include "stdafx.h"
#include "devioctl.h"
#include <setupapi.h>
#include "BulkUsb.h"
#include "GUID829.h"
#include "usbdi.h"
#include "DeviceOp.h"

char completeDeviceName[256] = "";  //generated from the GUID registered by the driver itself

// functions


HANDLE
OpenOneDevice (
    IN       HDEVINFO                    HardwareDeviceInfo,
    IN       PSP_INTERFACE_DEVICE_DATA   DeviceInfoData,
	IN		 char *devName
    )
/*++
Routine Description:

    Given the HardwareDeviceInfo, representing a handle to the plug and
    play information, and deviceInfoData, representing a specific usb device,
    open that device and fill in all the relevant information in the given
    USB_DEVICE_DESCRIPTOR structure.

Arguments:

    HardwareDeviceInfo:  handle to info obtained from Pnp mgr via SetupDiGetClassDevs()
    DeviceInfoData:      ptr to info obtained via SetupDiEnumInterfaceDevice()

Return Value:

    return HANDLE if the open and initialization was successfull,
	else INVLAID_HANDLE_VALUE.

--*/
{
    PSP_INTERFACE_DEVICE_DETAIL_DATA     functionClassDeviceData = NULL;
    ULONG                                predictedLength = 0;
    ULONG                                requiredLength = 0;
	HANDLE								 hOut = INVALID_HANDLE_VALUE;

    //
    // allocate a function class device data structure to receive the
    // goods about this particular device.
    //
    SetupDiGetInterfaceDeviceDetail (
            HardwareDeviceInfo,
            DeviceInfoData,
            NULL, // probing so no output buffer yet
            0, // probing so output buffer length of zero
            &requiredLength,
            NULL); // not interested in the specific dev-node


    predictedLength = requiredLength;


    functionClassDeviceData = (PSP_INTERFACE_DEVICE_DETAIL_DATA)malloc (predictedLength);
    functionClassDeviceData->cbSize = sizeof (SP_INTERFACE_DEVICE_DETAIL_DATA);

    //
    // Retrieve the information from Plug and Play.
    //
    if (! SetupDiGetInterfaceDeviceDetail (
               HardwareDeviceInfo,
               DeviceInfoData,
               functionClassDeviceData,
               predictedLength,
               &requiredLength,
               NULL)) {
		free( functionClassDeviceData );
        return INVALID_HANDLE_VALUE;
    }

	strcpy( devName,functionClassDeviceData->DevicePath) ;

    hOut = CreateFile (
                  functionClassDeviceData->DevicePath,
                  GENERIC_READ | GENERIC_WRITE,
                  FILE_SHARE_READ | FILE_SHARE_WRITE,
                  NULL, // no SECURITY_ATTRIBUTES structure
                  OPEN_EXISTING, // No special create flags
                  0, // No special attributes
                  NULL); // No template file

    if (INVALID_HANDLE_VALUE == hOut) {

    }
	free( functionClassDeviceData );
	return hOut;
}


HANDLE
OpenUsbDevice( LPGUID  pGuid, char *outNameBuf)
/*++
Routine Description:

   Do the required PnP things in order to find
   the next available proper device in the system at this time.

Arguments:

    pGuid:      ptr to GUID registered by the driver itself
    outNameBuf: the generated name for this device

Return Value:

    return HANDLE if the open and initialization was successful,
	else INVLAID_HANDLE_VALUE.
--*/
{
   ULONG NumberDevices;
   HANDLE hOut = INVALID_HANDLE_VALUE;
   HDEVINFO                 hardwareDeviceInfo;
   SP_INTERFACE_DEVICE_DATA deviceInfoData;
   ULONG                    i;
   BOOLEAN                  done;
   PUSB_DEVICE_DESCRIPTOR   usbDeviceInst;
   PUSB_DEVICE_DESCRIPTOR	*UsbDevices = &usbDeviceInst;

   *UsbDevices = NULL;
   NumberDevices = 0;

   //
   // Open a handle to the plug and play dev node.
   // SetupDiGetClassDevs() returns a device information set that contains info on all
   // installed devices of a specified class.
   //
   hardwareDeviceInfo = SetupDiGetClassDevs (
                           pGuid,
                           NULL, // Define no enumerator (global)
                           NULL, // Define no
                           (DIGCF_PRESENT | // Only Devices present
                            DIGCF_INTERFACEDEVICE)); // Function class devices.

   //
   // Take a wild guess at the number of devices we have;
   // Be prepared to realloc and retry if there are more than we guessed
   //
   NumberDevices = 4;
   done = FALSE;
   deviceInfoData.cbSize = sizeof (SP_INTERFACE_DEVICE_DATA);

   i=0;
   while (!done) {
      NumberDevices *= 2;

      if (*UsbDevices) {
         *UsbDevices =
               (PUSB_DEVICE_DESCRIPTOR)realloc (*UsbDevices, (NumberDevices * sizeof (USB_DEVICE_DESCRIPTOR)));
      } else {
         *UsbDevices = (PUSB_DEVICE_DESCRIPTOR)calloc (NumberDevices, sizeof (USB_DEVICE_DESCRIPTOR));
      }

      if (NULL == *UsbDevices) {

         // SetupDiDestroyDeviceInfoList destroys a device information set
         // and frees all associated memory.

         SetupDiDestroyDeviceInfoList (hardwareDeviceInfo);
         return INVALID_HANDLE_VALUE;
      }

      usbDeviceInst = *UsbDevices + i;

      for (; i < NumberDevices; i++) {

         // SetupDiEnumDeviceInterfaces() returns information about device interfaces
         // exposed by one or more devices. Each call returns information about one interface;
         // the routine can be called repeatedly to get information about several interfaces
         // exposed by one or more devices.

         if (SetupDiEnumDeviceInterfaces (hardwareDeviceInfo,
                                         0, // We don't care about specific PDOs
										 pGuid,
                                         i,
                                         &deviceInfoData)) {

            hOut = OpenOneDevice (hardwareDeviceInfo, &deviceInfoData, outNameBuf);
			if ( hOut != INVALID_HANDLE_VALUE ) {
               done = TRUE;
               break;
			}
         } else {
            if (ERROR_NO_MORE_ITEMS == GetLastError()) {
               done = TRUE;
               break;
            }
         }
      }
   }

   NumberDevices = i;

   // SetupDiDestroyDeviceInfoList() destroys a device information set
   // and frees all associated memory.

   SetupDiDestroyDeviceInfoList (hardwareDeviceInfo);
   free ( *UsbDevices );
   return hOut;
}




BOOL
GetUsbDeviceFileName( LPGUID  pGuid, char *outNameBuf)
/*++
Routine Description:

    Given a ptr to a driver-registered GUID, give us a string with the device name
    that can be used in a CreateFile() call.
    Actually briefly opens and closes the device and sets outBuf if successfull;
    returns FALSE if not

Arguments:

    pGuid:      ptr to GUID registered by the driver itself
    outNameBuf: the generated zero-terminated name for this device

Return Value:

    TRUE on success else FALSE

--*/
{
	HANDLE hDev = OpenUsbDevice( pGuid, outNameBuf );
	if ( hDev != INVALID_HANDLE_VALUE )
	{
		CloseHandle( hDev );
		return TRUE;
	}
	return FALSE;

}

HANDLE
open_dev()
/*++
Routine Description:

    Called by dumpUsbConfig() to open an instance of our device

Arguments:

    None

Return Value:

    Device handle on success else NULL

--*/
{

	HANDLE hDEV = OpenUsbDevice( (LPGUID)&GUID_CLASS_I82930_BULK, completeDeviceName);

	return hDEV;
}


HANDLE
open_file( char *filename)
/*++
Routine Description:

    Called by main() to open an instance of our device after obtaining its name

Arguments:

    None

Return Value:

    Device handle on success else NULL

--*/
{

	HANDLE h;

	if ( !GetUsbDeviceFileName(
		(LPGUID) &GUID_CLASS_I82930_BULK,
		completeDeviceName) )
	{
		return  INVALID_HANDLE_VALUE;
	}

    strcat (completeDeviceName,
			"\\"
			);			

    strcat (completeDeviceName,
			filename
			);					



	h = CreateFile(completeDeviceName,
		GENERIC_WRITE | GENERIC_READ,
		FILE_SHARE_WRITE | FILE_SHARE_READ,
		NULL,
		OPEN_EXISTING,
		0,
		NULL);

	return h;
}

BOOL device_ctl(PDEVICE_CONTROL pDeviceControl,BOOL bRead)
{

	BOOL bSuccess = false;
	ULONG	iBytes = 0;

	HANDLE hDEV = open_dev();
	if ( hDEV != INVALID_HANDLE_VALUE)
	{
		//if control transfer failed(control endpoint stall), DeviceIoControl will return 0
		//if control transfer failed(control endpoint always NAK), DeviceIoControl will pending
		//if control transfer is successful,DeviceIoControl will return 1
		if (!bRead)	//if false,io control write
		{
			bSuccess = DeviceIoControl(hDEV,
					IOCTL_BULKUSB_DEVICE_WRITE,
					pDeviceControl,			//input buffer address,namely,data send to driver
					sizeof(DEVICE_CONTROL),
					NULL,		
					0,
					&iBytes,	//this must have
					NULL);
		}
		else
		{
			bSuccess = DeviceIoControl(hDEV,
					IOCTL_BULKUSB_DEVICE_READ,
					pDeviceControl,			//input buffer address,namely,data send to driver
					sizeof(DEVICE_CONTROL),
					pDeviceControl->pBuffer,
					pDeviceControl->wLength,
					&iBytes,	//this must have
					NULL);
		}
		CloseHandle(hDEV);
	}

	return bSuccess;
}

void reset_pipe(HANDLE hHandle)
{
	//	when read or write from or to a bulk pipe and return non-success,
	//it shows an error has happened and pipe will be in stall status,
	//so we should send a ClearFeature request to this pipe.
	//For interrupt pipe,in our demo,it only implement very simple function,
	//no stall status would happened.
	ULONG	nBytes = 0;

	DeviceIoControl(hHandle,
			IOCTL_BULKUSB_RESET_PIPE,
			NULL,
			0,
			NULL,
			0,
			&nBytes,
			NULL);
}