C++ Pipe_ConfigurePipe函数代码示例

/** Reads and processes an attached device's descriptors, to determine compatibility and pipe configurations. This
 *  routine will read in the entire configuration descriptor, and configure the hosts pipes to correctly communicate
 *  with compatible devices.
 *
 *  This routine searches for the first interface containing bulk IN and OUT data endpoints.
 *
 *  \return An error code from the \ref AndroidHost_GetConfigDescriptorDataCodes_t enum.
 */
uint8_t ProcessConfigurationDescriptor(void)
{
	uint8_t  ConfigDescriptorData[512];
	void*    CurrConfigLocation = ConfigDescriptorData;
	uint16_t CurrConfigBytesRem;

	USB_Descriptor_Endpoint_t* DataINEndpoint  = NULL;
	USB_Descriptor_Endpoint_t* DataOUTEndpoint = NULL;

	/* Retrieve the entire configuration descriptor into the allocated buffer */
	switch (USB_Host_GetDeviceConfigDescriptor(1, &CurrConfigBytesRem, ConfigDescriptorData, sizeof(ConfigDescriptorData)))
	{
		case HOST_GETCONFIG_Successful:
			break;
		case HOST_GETCONFIG_InvalidData:
			return InvalidConfigDataReturned;
		case HOST_GETCONFIG_BuffOverflow:
			return DescriptorTooLarge;
		default:
			return DevControlError;
	}

	/* There should be only one compatible Android Accessory Mode interface in the device, attempt to find it */
	if (USB_GetNextDescriptorComp(&CurrConfigBytesRem, &CurrConfigLocation,
	                              DCOMP_NextAndroidAccessoryInterface) != DESCRIPTOR_SEARCH_COMP_Found)
	{
		return NoCompatibleInterfaceFound;
	}

	while (!(DataINEndpoint) || !(DataOUTEndpoint))
	{
		/* Get the next Android Accessory Mode interface's data endpoint descriptor */
		if (USB_GetNextDescriptorComp(&CurrConfigBytesRem, &CurrConfigLocation,
		                              DCOMP_NextInterfaceBulkEndpoint) != DESCRIPTOR_SEARCH_COMP_Found)
		{
			/* Data endpoints not found within the first Android Accessory device interface, error out */
			return NoCompatibleInterfaceFound;
		}

		/* Retrieve the endpoint address from the endpoint descriptor */
		USB_Descriptor_Endpoint_t* EndpointData = DESCRIPTOR_PCAST(CurrConfigLocation, USB_Descriptor_Endpoint_t);

		/* If the endpoint is a IN type endpoint */
		if ((EndpointData->EndpointAddress & ENDPOINT_DIR_MASK) == ENDPOINT_DIR_IN)
		  DataINEndpoint  = EndpointData;
		else
		  DataOUTEndpoint = EndpointData;
	}

	/* Configure the Android Accessory data IN pipe */
	Pipe_ConfigurePipe(ANDROID_DATA_IN_PIPE, EP_TYPE_BULK, DataINEndpoint->EndpointAddress, DataINEndpoint->EndpointSize, 1);

	/* Configure the Android Accessory data OUT pipe */
	Pipe_ConfigurePipe(ANDROID_DATA_OUT_PIPE, EP_TYPE_BULK, DataOUTEndpoint->EndpointAddress, DataOUTEndpoint->EndpointSize, 1);

	/* Valid data found, return success */
	return SuccessfulConfigRead;
}

uint8_t PRNT_Host_ConfigurePipes(USB_ClassInfo_PRNT_Host_t* const PRNTInterfaceInfo,
                                 uint16_t ConfigDescriptorSize,
							     void* DeviceConfigDescriptor)
{
	uint8_t FoundEndpoints = 0;
	
	memset(&PRNTInterfaceInfo->State, 0x00, sizeof(PRNTInterfaceInfo->State));

	if (DESCRIPTOR_TYPE(DeviceConfigDescriptor) != DTYPE_Configuration)
	  return PRNT_ENUMERROR_InvalidConfigDescriptor;
	
	if (USB_GetNextDescriptorComp(&ConfigDescriptorSize, &DeviceConfigDescriptor,
	                              DCOMP_PRNT_NextPRNTInterface) != DESCRIPTOR_SEARCH_COMP_Found)
	{
		return PRNT_ENUMERROR_NoPrinterInterfaceFound;
	}

	USB_Descriptor_Interface_t* PrinterInterface = DESCRIPTOR_PCAST(DeviceConfigDescriptor, USB_Descriptor_Interface_t);

	PRNTInterfaceInfo->State.InterfaceNumber  = PrinterInterface->InterfaceNumber;
	PRNTInterfaceInfo->State.AlternateSetting = PrinterInterface->AlternateSetting;
	
	while (FoundEndpoints != (PRNT_FOUND_DATAPIPE_IN | PRNT_FOUND_DATAPIPE_OUT))
	{
		if (USB_GetNextDescriptorComp(&ConfigDescriptorSize, &DeviceConfigDescriptor,
		                              DCOMP_PRNT_NextPRNTInterfaceEndpoint) != DESCRIPTOR_SEARCH_COMP_Found)
		{
			return PRNT_ENUMERROR_EndpointsNotFound;
		}
		
		USB_Descriptor_Endpoint_t* EndpointData = DESCRIPTOR_PCAST(DeviceConfigDescriptor, USB_Descriptor_Endpoint_t);

		if (EndpointData->EndpointAddress & ENDPOINT_DESCRIPTOR_DIR_IN)
		{
			Pipe_ConfigurePipe(PRNTInterfaceInfo->Config.DataINPipeNumber, EP_TYPE_BULK, PIPE_TOKEN_IN,
			                   EndpointData->EndpointAddress, EndpointData->EndpointSize,
			                   PRNTInterfaceInfo->Config.DataINPipeDoubleBank ? PIPE_BANK_DOUBLE : PIPE_BANK_SINGLE);
			PRNTInterfaceInfo->State.DataINPipeSize = EndpointData->EndpointSize;

			FoundEndpoints |= PRNT_FOUND_DATAPIPE_IN;
		}
		else
		{
			Pipe_ConfigurePipe(PRNTInterfaceInfo->Config.DataOUTPipeNumber, EP_TYPE_BULK, PIPE_TOKEN_OUT,
			                   EndpointData->EndpointAddress, EndpointData->EndpointSize,
			                   PRNTInterfaceInfo->Config.DataOUTPipeDoubleBank ? PIPE_BANK_DOUBLE : PIPE_BANK_SINGLE);
			PRNTInterfaceInfo->State.DataOUTPipeSize = EndpointData->EndpointSize;

			FoundEndpoints |= PRNT_FOUND_DATAPIPE_OUT;
		}		
	}

	PRNTInterfaceInfo->State.IsActive = true;
	return PRNT_ENUMERROR_NoError;
}

uint8_t MIDI_Host_ConfigurePipes(USB_ClassInfo_MIDI_Host_t* const MIDIInterfaceInfo,
                                 uint16_t ConfigDescriptorSize,
                                 void* ConfigDescriptorData)
{
	uint8_t FoundEndpoints = 0;

	memset(&MIDIInterfaceInfo->State, 0x00, sizeof(MIDIInterfaceInfo->State));

	if (DESCRIPTOR_TYPE(ConfigDescriptorData) != DTYPE_Configuration)
	  return MIDI_ENUMERROR_InvalidConfigDescriptor;
	
	if (USB_GetNextDescriptorComp(&ConfigDescriptorSize, &ConfigDescriptorData,
	                              DCOMP_MIDI_Host_NextMIDIStreamingInterface) != DESCRIPTOR_SEARCH_COMP_Found)
	{
		return MIDI_ENUMERROR_NoStreamingInterfaceFound;
	}
	
	while (FoundEndpoints != (MIDI_FOUND_DATAPIPE_IN | MIDI_FOUND_DATAPIPE_OUT))
	{
		if (USB_GetNextDescriptorComp(&ConfigDescriptorSize, &ConfigDescriptorData,
		                              DCOMP_MIDI_Host_NextMIDIStreamingDataEndpoint) != DESCRIPTOR_SEARCH_COMP_Found)
		{
			return MIDI_ENUMERROR_EndpointsNotFound;
		}
		
		USB_Descriptor_Endpoint_t* EndpointData = DESCRIPTOR_PCAST(ConfigDescriptorData, USB_Descriptor_Endpoint_t);

		if (EndpointData->EndpointAddress & ENDPOINT_DESCRIPTOR_DIR_IN)
		{
			Pipe_ConfigurePipe(MIDIInterfaceInfo->Config.DataINPipeNumber, EP_TYPE_BULK, PIPE_TOKEN_IN,
							   EndpointData->EndpointAddress, EndpointData->EndpointSize,
							   MIDIInterfaceInfo->Config.DataINPipeDoubleBank ? PIPE_BANK_DOUBLE : PIPE_BANK_SINGLE);
			MIDIInterfaceInfo->State.DataINPipeSize = EndpointData->EndpointSize;
			
			FoundEndpoints |= MIDI_FOUND_DATAPIPE_IN;
		}
		else
		{
			Pipe_ConfigurePipe(MIDIInterfaceInfo->Config.DataOUTPipeNumber, EP_TYPE_BULK, PIPE_TOKEN_OUT,
							   EndpointData->EndpointAddress, EndpointData->EndpointSize,
							   MIDIInterfaceInfo->Config.DataOUTPipeDoubleBank ? PIPE_BANK_DOUBLE : PIPE_BANK_SINGLE);
			MIDIInterfaceInfo->State.DataOUTPipeSize = EndpointData->EndpointSize;

			FoundEndpoints |= MIDI_FOUND_DATAPIPE_OUT;
		}
	}
	
	MIDIInterfaceInfo->State.IsActive = true;
	return MIDI_ENUMERROR_NoError;
}

/** Reads and processes an attached device's descriptors, to determine compatibility and pipe configurations. This
 *  routine will read in the entire configuration descriptor, and configure the hosts pipes to correctly communicate
 *  with compatible devices.
 *
 *  This routine searches for a HID interface descriptor containing at least one Interrupt type IN endpoint.
 *
 *  \return An error code from the \ref KeyboardHost_GetConfigDescriptorDataCodes_t enum.
 */
uint8_t ProcessConfigurationDescriptor(void)
{
	uint8_t  ConfigDescriptorData[512];
	void*    CurrConfigLocation = ConfigDescriptorData;
	uint16_t CurrConfigBytesRem;

	USB_Descriptor_Interface_t* HIDInterface   = NULL;
	USB_Descriptor_Endpoint_t*  DataINEndpoint = NULL;

	/* Retrieve the entire configuration descriptor into the allocated buffer */
	switch (USB_Host_GetDeviceConfigDescriptor(1, &CurrConfigBytesRem, ConfigDescriptorData, sizeof(ConfigDescriptorData)))
	{
		case HOST_GETCONFIG_Successful:
			break;
		case HOST_GETCONFIG_InvalidData:
			return InvalidConfigDataReturned;
		case HOST_GETCONFIG_BuffOverflow:
			return DescriptorTooLarge;
		default:
			return ControlError;
	}

	while (!(DataINEndpoint))
	{
		/* See if we've found a likely compatible interface, and if there is an endpoint within that interface */
		if (!(HIDInterface) ||
		    USB_GetNextDescriptorComp(&CurrConfigBytesRem, &CurrConfigLocation,
		                              DComp_NextKeyboardInterfaceDataEndpoint) != DESCRIPTOR_SEARCH_COMP_Found)
		{
			/* Get the next HID interface from the configuration descriptor */
			if (USB_GetNextDescriptorComp(&CurrConfigBytesRem, &CurrConfigLocation,
										  DComp_NextKeyboardInterface) != DESCRIPTOR_SEARCH_COMP_Found)
			{
				/* Descriptor not found, error out */
				return NoCompatibleInterfaceFound;
			}

			/* Save the interface in case we need to refer back to it later */
			HIDInterface = DESCRIPTOR_PCAST(CurrConfigLocation, USB_Descriptor_Interface_t);

			/* Skip the remainder of the loop as we have not found an endpoint yet */
			continue;
		}

		/* Retrieve the endpoint address from the endpoint descriptor */
		USB_Descriptor_Endpoint_t* EndpointData = DESCRIPTOR_PCAST(CurrConfigLocation, USB_Descriptor_Endpoint_t);

		/* If the endpoint is a IN type endpoint */
		if (EndpointData->EndpointAddress & ENDPOINT_DESCRIPTOR_DIR_IN)
		  DataINEndpoint = EndpointData;
	}

	/* Configure the HID data IN pipe */
	Pipe_ConfigurePipe(KEYBOARD_DATA_IN_PIPE, EP_TYPE_INTERRUPT, PIPE_TOKEN_IN,
	                   DataINEndpoint->EndpointAddress, DataINEndpoint->EndpointSize, PIPE_BANK_SINGLE);
	Pipe_SetInterruptPeriod(DataINEndpoint->PollingIntervalMS);

	/* Valid data found, return success */
	return SuccessfulConfigRead;
}

/** Reads and processes an attached device's descriptors, to determine compatibility and pipe configurations. This
 *  routine will read in the entire configuration descriptor, and configure the hosts pipes to correctly communicate
 *  with compatible devices.
 *
 *  This routine searches for a HID interface descriptor containing at least one Interrupt type IN endpoint and HID descriptor.
 *
 *  \return An error code from the \ref MouseHostWithParser_GetConfigDescriptorDataCodes_t enum.
 */
uint8_t ProcessConfigurationDescriptor(void)
{
	uint8_t  ConfigDescriptorData[512];
	void*    CurrConfigLocation = ConfigDescriptorData;
	uint16_t CurrConfigBytesRem;

	/* Retrieve the entire configuration descriptor into the allocated buffer */
	switch (USB_Host_GetDeviceConfigDescriptor(1, &CurrConfigBytesRem, ConfigDescriptorData, sizeof(ConfigDescriptorData)))
	{
		case HOST_GETCONFIG_Successful:
			break;
		case HOST_GETCONFIG_InvalidData:
			return InvalidConfigDataReturned;
		case HOST_GETCONFIG_BuffOverflow:
			return DescriptorTooLarge;
		default:
			return ControlError;
	}

	/* Get the mouse interface from the configuration descriptor */
	if (USB_GetNextDescriptorComp(&CurrConfigBytesRem, &CurrConfigLocation,
	                              DComp_NextMouseInterface) != DESCRIPTOR_SEARCH_COMP_Found)
	{
		/* Descriptor not found, error out */
		return NoHIDInterfaceFound;
	}
	
	/* Get the mouse interface's HID descriptor */
	if (USB_GetNextDescriptorComp(&CurrConfigBytesRem, &CurrConfigLocation,
	                              DComp_NextHID) != DESCRIPTOR_SEARCH_COMP_Found)
	{
		/* Descriptor not found, error out */
		return NoHIDDescriptorFound;
	}

	/* Save the HID report size for later use */
	HIDReportSize = DESCRIPTOR_CAST(CurrConfigLocation, USB_Descriptor_HID_t).HIDReportLength;
	
	/* Get the mouse interface's data endpoint descriptor */
	if (USB_GetNextDescriptorComp(&CurrConfigBytesRem, &CurrConfigLocation,
	                              DComp_NextMouseInterfaceDataEndpoint) != DESCRIPTOR_SEARCH_COMP_Found)
	{
		/* Descriptor not found, error out */
		return NoEndpointFound;
	}
	
	/* Retrieve the endpoint address from the endpoint descriptor */
	USB_Descriptor_Endpoint_t* EndpointData = DESCRIPTOR_PCAST(CurrConfigLocation, USB_Descriptor_Endpoint_t);

	/* Configure the mouse data pipe */
	Pipe_ConfigurePipe(MOUSE_DATAPIPE, EP_TYPE_INTERRUPT, PIPE_TOKEN_IN,
	                   EndpointData->EndpointAddress, EndpointData->EndpointSize, PIPE_BANK_SINGLE);

	/* Valid data found, return success */
	return SuccessfulConfigRead;
}

/** Reads and processes an attached device's descriptors, to determine compatibility and pipe configurations. This
 *  routine will read in the entire configuration descriptor, and configure the hosts pipes to correctly communicate
 *  with compatible devices.
 *
 *  This routine searches for a HID interface descriptor containing at least one Interrupt type IN endpoint.
 *
 *  \return An error code from the MouseHostViaInt_GetConfigDescriptorDataCodes_t enum.
 */
uint8_t ProcessConfigurationDescriptor(void)
{
	uint8_t* ConfigDescriptorData;
	uint16_t ConfigDescriptorSize;
	
	/* Get Configuration Descriptor size from the device */
	if (USB_Host_GetDeviceConfigDescriptor(&ConfigDescriptorSize, NULL) != HOST_SENDCONTROL_Successful)
	  return ControlError;
	
	/* Ensure that the Configuration Descriptor isn't too large */
	if (ConfigDescriptorSize > MAX_CONFIG_DESCRIPTOR_SIZE)
	  return DescriptorTooLarge;
	  
	/* Allocate enough memory for the entire config descriptor */
	ConfigDescriptorData = alloca(ConfigDescriptorSize);

	/* Retrieve the entire configuration descriptor into the allocated buffer */
	USB_Host_GetDeviceConfigDescriptor(&ConfigDescriptorSize, ConfigDescriptorData);
	
	/* Validate returned data - ensure first entry is a configuration header descriptor */
	if (DESCRIPTOR_TYPE(ConfigDescriptorData) != DTYPE_Configuration)
	  return InvalidConfigDataReturned;
	
	/* Get the mouse interface from the configuration descriptor */
	if (USB_Host_GetNextDescriptorComp(&ConfigDescriptorSize, &ConfigDescriptorData, NextMouseInterface))
	{
		/* Descriptor not found, error out */
		return NoHIDInterfaceFound;
	}

	/* Get the mouse interface's data endpoint descriptor */
	if (USB_Host_GetNextDescriptorComp(&ConfigDescriptorSize, &ConfigDescriptorData,
	                                                NextInterfaceMouseDataEndpoint))
	{
		/* Descriptor not found, error out */
		return NoEndpointFound;
	}
	
	/* Retrieve the endpoint address from the endpoint descriptor */
	USB_Descriptor_Endpoint_t* EndpointData = DESCRIPTOR_PCAST(ConfigDescriptorData, USB_Descriptor_Endpoint_t);

	/* Configure the mouse data pipe */
	Pipe_ConfigurePipe(MOUSE_DATAPIPE, EP_TYPE_INTERRUPT, PIPE_TOKEN_IN,
	                   EndpointData->EndpointAddress, EndpointData->EndpointSize, PIPE_BANK_SINGLE);

	Pipe_SetInfiniteINRequests();
	Pipe_SetInterruptPeriod(EndpointData->PollingIntervalMS);
	Pipe_Unfreeze();
			
	/* Enable the pipe IN interrupt for the data pipe */
	USB_INT_Enable(PIPE_INT_IN);
			
	/* Valid data found, return success */
	return SuccessfulConfigRead;
}

bool Pipe_ConfigurePipeTable(const USB_Pipe_Table_t* const Table,
                             const uint8_t Entries)
{
	for (uint8_t i = 0; i < Entries; i++)
	{
		if (!(Table[i].Address))
		  continue;

		if (!(Pipe_ConfigurePipe(Table[i].Address, Table[i].Type, Table[i].EndpointAddress, Table[i].Size, Table[i].Banks)))
		{
			return false;
		}
	}

	return true;
}

uint8_t SI_Host_ConfigurePipes(USB_ClassInfo_SI_Host_t* const SIInterfaceInfo, uint16_t ConfigDescriptorSize,
                              uint8_t* DeviceConfigDescriptor)
{
	uint8_t  FoundEndpoints = 0;
	
	memset(&SIInterfaceInfo->State, 0x00, sizeof(SIInterfaceInfo->State));
	
	if (DESCRIPTOR_TYPE(DeviceConfigDescriptor) != DTYPE_Configuration)
	  return SI_ENUMERROR_InvalidConfigDescriptor;
	
	if (USB_GetNextDescriptorComp(&ConfigDescriptorSize, &DeviceConfigDescriptor,
	                              DComp_SI_Host_NextSIInterface) != DESCRIPTOR_SEARCH_COMP_Found)
	{
		return SI_ENUMERROR_NoSIInterfaceFound;
	}

	while (FoundEndpoints != (SI_FOUND_EVENTS_IN | SI_FOUND_DATAPIPE_IN | SI_FOUND_DATAPIPE_OUT))
	{
		if (USB_GetNextDescriptorComp(&ConfigDescriptorSize, &DeviceConfigDescriptor,
		                              DComp_SI_Host_NextSIInterfaceEndpoint) != DESCRIPTOR_SEARCH_COMP_Found)
		{
			return SI_ENUMERROR_EndpointsNotFound;
		}
		
		USB_Descriptor_Endpoint_t* EndpointData = DESCRIPTOR_PCAST(DeviceConfigDescriptor, USB_Descriptor_Endpoint_t);

		if ((EndpointData->Attributes & EP_TYPE_MASK) == EP_TYPE_INTERRUPT)
		{
			if (EndpointData->EndpointAddress & ENDPOINT_DESCRIPTOR_DIR_IN)
			{
				Pipe_ConfigurePipe(SIInterfaceInfo->Config.EventsPipeNumber, EP_TYPE_INTERRUPT, PIPE_TOKEN_IN,
								   EndpointData->EndpointAddress, EndpointData->EndpointSize,
								   PIPE_BANK_DOUBLE);			
				SIInterfaceInfo->State.EventsPipeSize = EndpointData->EndpointSize;

				Pipe_SetInterruptPeriod(EndpointData->PollingIntervalMS);
				
				FoundEndpoints |= SI_FOUND_EVENTS_IN;
			}
		}
		else
		{
			if (EndpointData->EndpointAddress & ENDPOINT_DESCRIPTOR_DIR_IN)
			{
				Pipe_ConfigurePipe(SIInterfaceInfo->Config.DataINPipeNumber, EP_TYPE_BULK, PIPE_TOKEN_IN,
								   EndpointData->EndpointAddress, EndpointData->EndpointSize,
								   PIPE_BANK_DOUBLE);
				SIInterfaceInfo->State.DataINPipeSize = EndpointData->EndpointSize;

				FoundEndpoints |= SI_FOUND_DATAPIPE_IN;
			}
			else
			{
				Pipe_ConfigurePipe(SIInterfaceInfo->Config.DataOUTPipeNumber, EP_TYPE_BULK, PIPE_TOKEN_OUT,
								   EndpointData->EndpointAddress, EndpointData->EndpointSize,
								   PIPE_BANK_DOUBLE);
				SIInterfaceInfo->State.DataOUTPipeSize = EndpointData->EndpointSize;

				FoundEndpoints |= SI_FOUND_DATAPIPE_OUT;
			}
		}
	}

	SIInterfaceInfo->State.IsActive = true;
	return SI_ENUMERROR_NoError;
}

void USB_Host_ProcessNextHostState(uint8_t corenum)
{
	uint8_t ErrorCode    = HOST_ENUMERROR_NoError;
	uint8_t SubErrorCode = HOST_ENUMERROR_NoError;

	static uint16_t WaitMSRemaining;
	static uint8_t  PostWaitState;

	switch (USB_HostState[corenum])
	{
		case HOST_STATE_WaitForDevice:
			if (WaitMSRemaining)
			{
				if ((SubErrorCode = USB_Host_WaitMS(1)) != HOST_WAITERROR_Successful)
				{
					USB_HostState[corenum] = PostWaitState;
					ErrorCode     = HOST_ENUMERROR_WaitStage;
					break;
				}

				if (!(--WaitMSRemaining))
				  USB_HostState[corenum] = PostWaitState;
			}
			break;

		case HOST_STATE_Powered:
			WaitMSRemaining = HOST_DEVICE_SETTLE_DELAY_MS;

			USB_HostState[corenum] = HOST_STATE_Powered_WaitForDeviceSettle;
			break;

		case HOST_STATE_Powered_WaitForDeviceSettle:
			if (WaitMSRemaining--)
			{
				Delay_MS(1);
				break;
			}
			else
			{
				USB_Host_VBUS_Manual_Off();

				USB_OTGPAD_On();
				USB_Host_VBUS_Auto_Enable();
				USB_Host_VBUS_Auto_On();

				USB_HostState[corenum] = HOST_STATE_Powered_WaitForConnect;
			}
			break;

		case HOST_STATE_Powered_WaitForConnect:
			HOST_TASK_NONBLOCK_WAIT(corenum, 100, HOST_STATE_Powered_DoReset);
			break;

		case HOST_STATE_Powered_DoReset:
		{
			HCD_USB_SPEED DeviceSpeed;
			HcdRhPortReset(corenum,1);
			HcdGetDeviceSpeed(corenum, 1, &DeviceSpeed); // skip checking status
			USB_Host_SetDeviceSpeed(corenum,DeviceSpeed);
			HOST_TASK_NONBLOCK_WAIT(corenum, 200, HOST_STATE_Powered_ConfigPipe);
		}
			break;

		case HOST_STATE_Powered_ConfigPipe:
			if (!Pipe_ConfigurePipe(corenum, PIPE_CONTROLPIPE, EP_TYPE_CONTROL,
							   PIPE_TOKEN_SETUP, ENDPOINT_CONTROLEP,
							   PIPE_CONTROLPIPE_DEFAULT_SIZE, PIPE_BANK_SINGLE) )
			{
				ErrorCode    = HOST_ENUMERROR_PipeConfigError;
				SubErrorCode = 0;
				break;
			}

			USB_HostState[corenum] = HOST_STATE_Default;
			break;

		case HOST_STATE_Default:
		{
			USB_Descriptor_Device_t DevDescriptor;
			USB_ControlRequest = (USB_Request_Header_t)
				{
					.bmRequestType = (REQDIR_DEVICETOHOST | REQTYPE_STANDARD | REQREC_DEVICE),
					.bRequest      = REQ_GetDescriptor,
					.wValue        = (DTYPE_Device << 8),
					.wIndex        = 0,
					.wLength       = 8,
				};

			if ((SubErrorCode = USB_Host_SendControlRequest(corenum, &DevDescriptor)) != HOST_SENDCONTROL_Successful)
			{
				ErrorCode = HOST_ENUMERROR_ControlError;
				break;
			}

			USB_Host_ControlPipeSize[corenum] = DevDescriptor.Endpoint0Size;

			Pipe_ClosePipe(corenum, PIPE_CONTROLPIPE);
			HcdRhPortReset(corenum,1);

			HOST_TASK_NONBLOCK_WAIT(corenum, 200, HOST_STATE_Default_PostReset);
//.........这里部分代码省略.........

/** Reads and processes an attached device's descriptors, to determine compatibility and pipe configurations. This
 *  routine will read in the entire configuration descriptor, and configure the hosts pipes to correctly communicate
 *  with compatible devices.
 *
 *  This routine searches for a BT interface descriptor containing bulk IN and OUT data endpoints.
 *
 *  \return An error code from the \ref BluetoothHost_GetConfigDescriptorDataCodes_t enum.
 */
uint8_t ProcessConfigurationDescriptor(void)
{
	uint8_t  ConfigDescriptorData[512];
	void*    CurrConfigLocation = ConfigDescriptorData;
	uint16_t CurrConfigBytesRem;

	USB_Descriptor_Endpoint_t* DataINEndpoint  = NULL;
	USB_Descriptor_Endpoint_t* DataOUTEndpoint = NULL;
	USB_Descriptor_Endpoint_t* EventsEndpoint  = NULL;

	/* Retrieve the entire configuration descriptor into the allocated buffer */
	switch (USB_Host_GetDeviceConfigDescriptor(1, &CurrConfigBytesRem, ConfigDescriptorData, sizeof(ConfigDescriptorData)))
	{
		case HOST_GETCONFIG_Successful:
			break;
		case HOST_GETCONFIG_InvalidData:
			return InvalidConfigDataReturned;
		case HOST_GETCONFIG_BuffOverflow:
			return DescriptorTooLarge;
		default:
			return DevControlError;
	}

	/* The Bluetooth USB transport addendum mandates that the data (not streaming voice) endpoints
	   be in the first interface descriptor (interface 0) */
	USB_GetNextDescriptorOfType(&CurrConfigBytesRem, &CurrConfigLocation, DTYPE_Interface);

	/* Ensure that an interface was found, and the end of the descriptor was not reached */
	if (!(CurrConfigBytesRem))
	  return NoCompatibleInterfaceFound;

	while (!(DataINEndpoint) || !(DataOUTEndpoint))
	{
		/* Get the next Bluetooth interface's data endpoint descriptor */
		if (USB_GetNextDescriptorComp(&CurrConfigBytesRem, &CurrConfigLocation,
		                              DComp_NextInterfaceBluetoothDataEndpoint) != DESCRIPTOR_SEARCH_COMP_Found)
		{
			/* Data endpoints not found within the first bluetooth device interface, error out */
			return NoCompatibleInterfaceFound;
		}

		/* Retrieve the endpoint address from the endpoint descriptor */
		USB_Descriptor_Endpoint_t* EndpointData = DESCRIPTOR_PCAST(CurrConfigLocation, USB_Descriptor_Endpoint_t);

		/* If the endpoint is a IN type endpoint */
		if ((EndpointData->EndpointAddress & ENDPOINT_DIR_MASK) == ENDPOINT_DIR_IN)
		{
			/* Check if the found endpoint is a interrupt or bulk type descriptor */
			if ((EndpointData->Attributes & EP_TYPE_MASK) == EP_TYPE_INTERRUPT)
			  EventsEndpoint = EndpointData;
			else
			  DataINEndpoint = EndpointData;
		}
		else
		{
			DataOUTEndpoint = EndpointData;
		}
	}

	/* Configure the Bluetooth data IN pipe */
	Pipe_ConfigurePipe(BLUETOOTH_DATA_IN_PIPE, EP_TYPE_BULK, PIPE_TOKEN_IN,
	                   DataINEndpoint->EndpointAddress, DataINEndpoint->EndpointSize, PIPE_BANK_SINGLE);

	/* Configure the Bluetooth data OUT pipe */
	Pipe_ConfigurePipe(BLUETOOTH_DATA_OUT_PIPE, EP_TYPE_BULK, PIPE_TOKEN_OUT,
					   DataOUTEndpoint->EndpointAddress, DataOUTEndpoint->EndpointSize, PIPE_BANK_SINGLE);

	/* Configure the Bluetooth events pipe */
	Pipe_ConfigurePipe(BLUETOOTH_EVENTS_PIPE, EP_TYPE_INTERRUPT, PIPE_TOKEN_IN,
					   EventsEndpoint->EndpointAddress, EventsEndpoint->EndpointSize, PIPE_BANK_SINGLE);
	Pipe_SetInterruptPeriod(EventsEndpoint->PollingIntervalMS);

	/* Valid data found, return success */
	return SuccessfulConfigRead;
}

/** Attempts to configure the system pipes for the attached Bluetooth adapter.
 *
 *  \param[in] DeviceDescriptor      Pointer to the Device Descriptor read from the attached device
 *  \param[in] ConfigDescriptorSize  Size of the retrieved Configuration Descriptor from the device
 *  \param[in] ConfigDescriptorData  Pointer to the Configuration Descriptor read from the attached device
 *
 *  \return  Boolean true if a valid Bluetooth interface was found, false otherwise.
 */
bool BluetoothAdapter_ConfigurePipes(USB_Descriptor_Device_t* const DeviceDescriptor,
                                     uint16_t ConfigDescriptorSize,
                                     void* ConfigDescriptorData)
{
	USB_Descriptor_Endpoint_t* DataINEndpoint  = NULL;
	USB_Descriptor_Endpoint_t* DataOUTEndpoint = NULL;
	USB_Descriptor_Endpoint_t* EventsEndpoint  = NULL;
	
	BluetoothAdapter_IsActive = false;

	/* Validate returned device Class, SubClass and Protocol values against the Bluetooth spec values */
	if ((DeviceDescriptor->Class    != BLUETOOTH_DEVICE_CLASS)    ||
	    (DeviceDescriptor->SubClass != BLUETOOTH_DEVICE_SUBCLASS) ||
	    (DeviceDescriptor->Protocol != BLUETOOTH_DEVICE_PROTOCOL))
	{
		return false;
	}

	/* The Bluetooth USB transport addendum mandates that the data (not streaming voice) endpoints
	   be in the first interface descriptor (interface 0) */
	USB_GetNextDescriptorOfType(&ConfigDescriptorSize, &ConfigDescriptorData, DTYPE_Interface);

	/* Ensure that an interface was found, and the end of the descriptor was not reached */
	if (!(ConfigDescriptorSize))
	  return false;

	while (!(DataINEndpoint) || !(DataOUTEndpoint) || !(EventsEndpoint))
	{
		/* Get the next Bluetooth interface's data endpoint descriptor */
		if (USB_GetNextDescriptorComp(&ConfigDescriptorSize, &ConfigDescriptorData,
		                              DComp_NextInterfaceBluetoothDataEndpoint) != DESCRIPTOR_SEARCH_COMP_Found)
		{
			/* Data endpoints not found within the first bluetooth device interface, error out */
			return false;
		}

		/* Retrieve the endpoint address from the endpoint descriptor */
		USB_Descriptor_Endpoint_t* EndpointData = DESCRIPTOR_PCAST(ConfigDescriptorData, USB_Descriptor_Endpoint_t);

		uint8_t EndpointType = (EndpointData->Attributes & EP_TYPE_MASK);

		/* If the endpoint is a IN type endpoint */
		if ((EndpointData->EndpointAddress & ENDPOINT_DIR_MASK) == ENDPOINT_DIR_IN)
		{	
			/* Check if the found endpoint is a interrupt or bulk type descriptor */
			if (EndpointType == EP_TYPE_BULK)
			  DataINEndpoint = EndpointData;
			else if (EndpointType == EP_TYPE_INTERRUPT)
			  EventsEndpoint = EndpointData;
		}
		else
		{
			if (EndpointType == EP_TYPE_BULK)
			  DataOUTEndpoint = EndpointData;
		}
	}

	/* Configure the Bluetooth data IN pipe */
	Pipe_ConfigurePipe(BLUETOOTH_DATA_IN_PIPE, EP_TYPE_BULK, PIPE_TOKEN_IN,
	                   DataINEndpoint->EndpointAddress, DataINEndpoint->EndpointSize, PIPE_BANK_SINGLE);

	/* Configure the Bluetooth data OUT pipe */
	Pipe_ConfigurePipe(BLUETOOTH_DATA_OUT_PIPE, EP_TYPE_BULK, PIPE_TOKEN_OUT,
					   DataOUTEndpoint->EndpointAddress, DataOUTEndpoint->EndpointSize, PIPE_BANK_SINGLE);

	/* Configure the Bluetooth events pipe */
	Pipe_ConfigurePipe(BLUETOOTH_EVENTS_PIPE, EP_TYPE_INTERRUPT, PIPE_TOKEN_IN,
					   EventsEndpoint->EndpointAddress, EventsEndpoint->EndpointSize, PIPE_BANK_SINGLE);
	Pipe_SetInterruptPeriod(EventsEndpoint->PollingIntervalMS);

	BluetoothAdapter_IsActive = true;
	return true;
}

uint8_t SI_Host_ConfigurePipes(USB_ClassInfo_SI_Host_t* const SIInterfaceInfo,
                               uint16_t ConfigDescriptorSize,
                               void* ConfigDescriptorData)
{
	USB_Descriptor_Endpoint_t*  DataINEndpoint      = NULL;
	USB_Descriptor_Endpoint_t*  DataOUTEndpoint     = NULL;
	USB_Descriptor_Endpoint_t*  EventsEndpoint      = NULL;
	USB_Descriptor_Interface_t* StillImageInterface = NULL;

	memset(&SIInterfaceInfo->State, 0x00, sizeof(SIInterfaceInfo->State));

	if (DESCRIPTOR_TYPE(ConfigDescriptorData) != DTYPE_Configuration)
	  return SI_ENUMERROR_InvalidConfigDescriptor;

	while (!(DataINEndpoint) || !(DataOUTEndpoint))
	{
		if (!(StillImageInterface) ||
		    USB_GetNextDescriptorComp(&ConfigDescriptorSize, &ConfigDescriptorData,
		                              DCOMP_SI_Host_NextSIInterfaceEndpoint) != DESCRIPTOR_SEARCH_COMP_Found)
		{
			if (USB_GetNextDescriptorComp(&ConfigDescriptorSize, &ConfigDescriptorData,
			                              DCOMP_SI_Host_NextSIInterface) != DESCRIPTOR_SEARCH_COMP_Found)
			{
				return SI_ENUMERROR_NoCompatibleInterfaceFound;
			}

			StillImageInterface = DESCRIPTOR_PCAST(ConfigDescriptorData, USB_Descriptor_Interface_t);

			DataINEndpoint  = NULL;
			DataOUTEndpoint = NULL;
			EventsEndpoint  = NULL;

			continue;
		}

		USB_Descriptor_Endpoint_t* EndpointData = DESCRIPTOR_PCAST(ConfigDescriptorData, USB_Descriptor_Endpoint_t);

		if (EndpointData->EndpointAddress & ENDPOINT_DESCRIPTOR_DIR_IN)
		{
			if ((EndpointData->Attributes & EP_TYPE_MASK) == EP_TYPE_INTERRUPT)
			  EventsEndpoint = EndpointData;
			else
			  DataINEndpoint = EndpointData;
		}
		else
		{
			DataOUTEndpoint = EndpointData;
		}
	}

	for (uint8_t PipeNum = 1; PipeNum < PIPE_TOTAL_PIPES; PipeNum++)
	{
		if (PipeNum == SIInterfaceInfo->Config.DataINPipeNumber)
		{
			Pipe_ConfigurePipe(PipeNum, EP_TYPE_BULK, PIPE_TOKEN_IN,
			                   DataINEndpoint->EndpointAddress, DataINEndpoint->EndpointSize,
			                   SIInterfaceInfo->Config.DataINPipeDoubleBank ? PIPE_BANK_DOUBLE : PIPE_BANK_SINGLE);

			SIInterfaceInfo->State.DataINPipeSize = DataINEndpoint->EndpointSize;
		}
		else if (PipeNum == SIInterfaceInfo->Config.DataOUTPipeNumber)
		{
			Pipe_ConfigurePipe(PipeNum, EP_TYPE_BULK, PIPE_TOKEN_OUT,
			                   DataOUTEndpoint->EndpointAddress, DataOUTEndpoint->EndpointSize,
			                   SIInterfaceInfo->Config.DataOUTPipeDoubleBank ? PIPE_BANK_DOUBLE : PIPE_BANK_SINGLE);

			SIInterfaceInfo->State.DataOUTPipeSize = DataOUTEndpoint->EndpointSize;
		}
		else if (PipeNum == SIInterfaceInfo->Config.EventsPipeNumber)
		{
			Pipe_ConfigurePipe(PipeNum, EP_TYPE_INTERRUPT, PIPE_TOKEN_IN,
			                   EventsEndpoint->EndpointAddress, EventsEndpoint->EndpointSize,
			                   SIInterfaceInfo->Config.EventsPipeDoubleBank ? PIPE_BANK_DOUBLE : PIPE_BANK_SINGLE);
			Pipe_SetInterruptPeriod(EventsEndpoint->PollingIntervalMS);

			SIInterfaceInfo->State.EventsPipeSize = EventsEndpoint->EndpointSize;
		}
	}

	SIInterfaceInfo->State.InterfaceNumber = StillImageInterface->InterfaceNumber;
	SIInterfaceInfo->State.IsActive = true;

	return SI_ENUMERROR_NoError;
}

/** Reads and processes an attached device's descriptors, to determine compatibility and pipe configurations. This
 *  routine will read in the entire configuration descriptor, and configure the hosts pipes to correctly communicate
 *  with compatible devices.
 *
 *  This routine searches for a Streaming Audio interface descriptor containing a valid Isochronous audio endpoint.
 *
 *  \return An error code from the \ref AudioHost_GetConfigDescriptorDataCodes_t enum.
 */
uint8_t ProcessConfigurationDescriptor(void)
{
	uint8_t  ConfigDescriptorData[512];
	void*    CurrConfigLocation = ConfigDescriptorData;
	uint16_t CurrConfigBytesRem;

	USB_Descriptor_Interface_t* AudioControlInterface   = NULL;
	USB_Descriptor_Interface_t* AudioStreamingInterface = NULL;
	USB_Descriptor_Endpoint_t*  DataOUTEndpoint         = NULL;

	/* Retrieve the entire configuration descriptor into the allocated buffer */
	switch (USB_Host_GetDeviceConfigDescriptor(1, &CurrConfigBytesRem, ConfigDescriptorData, sizeof(ConfigDescriptorData)))
	{
		case HOST_GETCONFIG_Successful:
			break;
		case HOST_GETCONFIG_InvalidData:
			return InvalidConfigDataReturned;
		case HOST_GETCONFIG_BuffOverflow:
			return DescriptorTooLarge;
		default:
			return ControlError;
	}

	while (!(DataOUTEndpoint))
	{
		/* See if we've found a likely compatible interface, and if there is an endpoint within that interface */
		if (!(AudioControlInterface) ||
		    USB_GetNextDescriptorComp(&CurrConfigBytesRem, &CurrConfigLocation,
		                              DComp_NextAudioInterfaceDataEndpoint) != DESCRIPTOR_SEARCH_COMP_Found)
		{
			/* Check if we haven't found an Audio Control interface yet, or if we have run out of related Audio Streaming interfaces */
			if (!(AudioControlInterface) ||
			    USB_GetNextDescriptorComp(&CurrConfigBytesRem, &CurrConfigLocation,
				                          DComp_NextAudioStreamInterface) != DESCRIPTOR_SEARCH_COMP_Found)
			{
				/* Find a new Audio Control interface if the current one doesn't contain a compatible streaming interface */
				if (USB_GetNextDescriptorComp(&CurrConfigBytesRem, &CurrConfigLocation,
				                              DComp_NextAudioControlInterface) != DESCRIPTOR_SEARCH_COMP_Found)
				{
					/* Descriptor not found, error out */
					return NoCompatibleInterfaceFound;
				}

				/* Save the interface in case we need to refer back to it later */
				AudioControlInterface = DESCRIPTOR_PCAST(CurrConfigLocation, USB_Descriptor_Interface_t);

				/* Find the next Audio Streaming interface within that Audio Control interface */
				if (USB_GetNextDescriptorComp(&CurrConfigBytesRem, &CurrConfigLocation,
				                              DComp_NextAudioStreamInterface) != DESCRIPTOR_SEARCH_COMP_Found)
				{
					/* Descriptor not found, error out */
					return NoCompatibleInterfaceFound;
				}
			}

			/* Save the interface in case we need to refer back to it later */
			AudioStreamingInterface = DESCRIPTOR_PCAST(CurrConfigLocation, USB_Descriptor_Interface_t);

			/* Skip the remainder of the loop as we have not found an endpoint yet */
			continue;
		}

		/* Retrieve the endpoint address from the endpoint descriptor */
		USB_Descriptor_Endpoint_t* EndpointData = DESCRIPTOR_PCAST(CurrConfigLocation, USB_Descriptor_Endpoint_t);

		/* Save the endpoint if it is an OUT type endpoint */
		if ((EndpointData->EndpointAddress & ENDPOINT_DIR_MASK) == ENDPOINT_DIR_OUT)
		  DataOUTEndpoint = EndpointData;
	}

	StreamingInterfaceIndex      = AudioStreamingInterface->InterfaceNumber;
	StreamingInterfaceAltSetting = AudioStreamingInterface->AlternateSetting;
	StreamingEndpointAddress     = DataOUTEndpoint->EndpointAddress;

	/* Configure the Audio data OUT pipe */
	Pipe_ConfigurePipe(AUDIO_DATA_OUT_PIPE, EP_TYPE_ISOCHRONOUS, DataOUTEndpoint->EndpointAddress, DataOUTEndpoint->EndpointSize, 2);

	/* Valid data found, return success */
	return SuccessfulConfigRead;
}

/** Reads and processes an attached device's descriptors, to determine compatibility and pipe configurations. This
 *  routine will read in the entire configuration descriptor, and configure the hosts pipes to correctly communicate
 *  with compatible devices.
 *
 *  This routine searches for a HID interface descriptor containing at least one Interrupt type IN endpoint and HID descriptor.
 *
 *  \return An error code from the KeyboardHostWithParser_GetConfigDescriptorDataCodes_t enum.
 */
uint8_t ProcessConfigurationDescriptor(void)
{
	uint8_t* ConfigDescriptorData;
	uint16_t ConfigDescriptorSize;
	
	/* Get Configuration Descriptor size from the device */
	if (USB_GetDeviceConfigDescriptor(&ConfigDescriptorSize, NULL) != HOST_SENDCONTROL_Successful)
	  return ControlError;
	
	/* Ensure that the Configuration Descriptor isn't too large */
	if (ConfigDescriptorSize > MAX_CONFIG_DESCRIPTOR_SIZE)
	  return DescriptorTooLarge;
	  
	/* Allocate enough memory for the entire config descriptor */
	ConfigDescriptorData = alloca(ConfigDescriptorSize);

	/* Retrieve the entire configuration descriptor into the allocated buffer */
	USB_GetDeviceConfigDescriptor(&ConfigDescriptorSize, ConfigDescriptorData);
	
	/* Validate returned data - ensure first entry is a configuration header descriptor */
	if (DESCRIPTOR_TYPE(ConfigDescriptorData) != DTYPE_Configuration)
	  return InvalidConfigDataReturned;
	
	/* Get the keyboard interface from the configuration descriptor */
	if (USB_GetNextDescriptorComp(&ConfigDescriptorSize, &ConfigDescriptorData,
	                              DComp_NextKeyboardInterface) != DESCRIPTOR_SEARCH_COMP_Found)
	{
		/* Descriptor not found, error out */
		return NoHIDInterfaceFound;
	}
	
	/* Get the keyboard interface's HID descriptor */
	if (USB_GetNextDescriptorComp(&ConfigDescriptorSize, &ConfigDescriptorData,
	                              DComp_NextHID) != DESCRIPTOR_SEARCH_COMP_Found)
	{
		/* Descriptor not found, error out */
		return NoHIDDescriptorFound;
	}

	/* Save the HID report size for later use */
	HIDReportSize = DESCRIPTOR_CAST(ConfigDescriptorData, USB_Descriptor_HID_t).HIDReportLength;

	/* Get the keyboard interface's data endpoint descriptor */
	if (USB_GetNextDescriptorComp(&ConfigDescriptorSize, &ConfigDescriptorData,
	                              DComp_NextInterfaceKeyboardDataEndpoint) != DESCRIPTOR_SEARCH_COMP_Found)
	{
		/* Descriptor not found, error out */
		return NoEndpointFound;
	}
	
	/* Retrieve the endpoint address from the endpoint descriptor */
	USB_Descriptor_Endpoint_t* EndpointData = DESCRIPTOR_PCAST(ConfigDescriptorData, USB_Descriptor_Endpoint_t);

	/* Configure the keyboard data pipe */
	Pipe_ConfigurePipe(KEYBOARD_DATAPIPE, EP_TYPE_INTERRUPT, PIPE_TOKEN_IN,
	                   EndpointData->EndpointAddress, EndpointData->EndpointSize, PIPE_BANK_SINGLE);

	Pipe_SetInfiniteINRequests();
			
	/* Valid data found, return success */
	return SuccessfulConfigRead;
}

void USB_Host_ProcessNextHostState(void)
{
	uint8_t ErrorCode    = HOST_ENUMERROR_NoError;
	uint8_t SubErrorCode = HOST_ENUMERROR_NoError;

	static uint16_t WaitMSRemaining;
	static uint8_t  PostWaitState;

	switch (USB_HostState)
	{
		case HOST_STATE_WaitForDevice:
			if (WaitMSRemaining)
			{
				if ((SubErrorCode = USB_Host_WaitMS(1)) != HOST_WAITERROR_Successful)
				{
					USB_HostState = PostWaitState;
					ErrorCode     = HOST_ENUMERROR_WaitStage;
					break;
				}
				
				if (!(--WaitMSRemaining))
				  USB_HostState = PostWaitState;
			}
		
			break;
		case HOST_STATE_Powered:
			WaitMSRemaining = HOST_DEVICE_SETTLE_DELAY_MS;
		
			USB_HostState = HOST_STATE_Powered_WaitForDeviceSettle;
			break;
		case HOST_STATE_Powered_WaitForDeviceSettle:
			if (WaitMSRemaining--)
			{
				_delay_ms(1);
				break;
			}
			else
			{
				USB_Host_VBUS_Manual_Off();

				USB_OTGPAD_On();
				USB_Host_VBUS_Auto_Enable();
				USB_Host_VBUS_Auto_On();
				
				USB_HostState = HOST_STATE_Powered_WaitForConnect;
			}
			
			break;
		case HOST_STATE_Powered_WaitForConnect:		
			if (USB_INT_HasOccurred(USB_INT_DCONNI))
			{	
				USB_INT_Clear(USB_INT_DCONNI);
				USB_INT_Clear(USB_INT_DDISCI);

				USB_INT_Clear(USB_INT_VBERRI);
				USB_INT_Enable(USB_INT_VBERRI);
					
				USB_Host_ResumeBus();
				Pipe_ClearPipes();
				
				HOST_TASK_NONBLOCK_WAIT(100, HOST_STATE_Powered_DoReset);
			}

			break;
		case HOST_STATE_Powered_DoReset:
			USB_Host_ResetDevice();

			HOST_TASK_NONBLOCK_WAIT(200, HOST_STATE_Powered_ConfigPipe);
			break;
		case HOST_STATE_Powered_ConfigPipe:
			Pipe_ConfigurePipe(PIPE_CONTROLPIPE, EP_TYPE_CONTROL,
							   PIPE_TOKEN_SETUP, ENDPOINT_CONTROLEP,
							   PIPE_CONTROLPIPE_DEFAULT_SIZE, PIPE_BANK_SINGLE);		
		
			if (!(Pipe_IsConfigured()))
			{
				ErrorCode    = HOST_ENUMERROR_PipeConfigError;
				SubErrorCode = 0;
				break;
			}

			USB_HostState = HOST_STATE_Default;
			break;
		case HOST_STATE_Default:
			USB_ControlRequest = (USB_Request_Header_t)
				{
					.bmRequestType = (REQDIR_DEVICETOHOST | REQTYPE_STANDARD | REQREC_DEVICE),
					.bRequest      = REQ_GetDescriptor,
					.wValue        = (DTYPE_Device << 8),
					.wIndex        = 0,
					.wLength       = 8,
				};

			uint8_t DataBuffer[8];

			if ((SubErrorCode = USB_Host_SendControlRequest(DataBuffer)) != HOST_SENDCONTROL_Successful)
			{
				ErrorCode = HOST_ENUMERROR_ControlError;
				break;
			}
//.........这里部分代码省略.........