自学教程：C++ Endpoint_SelectEndpoint函数代码示例

void RNDIS_Task(void){	Endpoint_SelectEndpoint(CDC_NOTIFICATION_EPADDR);	if (USB_DeviceState != DEVICE_STATE_Configured)	  return;	HandleUSB();}

uint8_t CDC_Device_SendString(USB_ClassInfo_CDC_Device_t* const CDCInterfaceInfo,                              const char* const String){    if ((USB_DeviceState != DEVICE_STATE_Configured) || !(CDCInterfaceInfo->State.LineEncoding.BaudRateBPS))        return ENDPOINT_RWSTREAM_DeviceDisconnected;    Endpoint_SelectEndpoint(CDCInterfaceInfo->Config.DataINEndpointNumber);    return Endpoint_Write_Stream_LE(String, strlen(String), NULL);}

/** Main program entry point. This routine contains the overall program flow, including initial *  setup of all components and the main program loop. */int main(void){	SetupHardware();	GlobalInterruptEnable();	uint8_t sending = 0;	for (;;) {		while (1) {                	int16_t ReceivedByte = CDC_Device_ReceiveByte(&VirtualSerial_CDC_Interface);			if (ReceivedByte < 0) 				break;			if (!configured) continue;			if (!sending) {				PORTC.OUTSET = PIN1_bm;				sending = 1;			}			PORTD.OUTTGL = PIN5_bm;                	while(!USART_IsTXDataRegisterEmpty(&USART));                	USART_PutChar(&USART, ReceivedByte & 0xff);		}		if (sending) {			USART_ClearTXComplete(&USART);               		while(!USART_IsTXComplete(&USART));			PORTC.OUTCLR = PIN1_bm;			sending = 0;			}                Endpoint_SelectEndpoint(VirtualSerial_CDC_Interface.Config.DataINEndpoint.Address);                /* Check if a packet is already enqueued to the host - if so, we shouldn't try to send more data                 * until it completes as there is a chance nothing is listening and a lengthy timeout could occur */		if (configured && Endpoint_IsINReady()) {			uint8_t maxbytes = CDC_TXRX_EPSIZE;                	while (USART_RXBufferData_Available(&USART_data) && maxbytes-->0) {                        	uint8_t b = USART_RXBuffer_GetByte(&USART_data);				CDC_Device_SendByte(&VirtualSerial_CDC_Interface, b);				PORTD.OUTTGL = PIN5_bm;                	}                }		CDC_Device_USBTask(&VirtualSerial_CDC_Interface);		USB_USBTask();		if (loop++) continue;		if (!configured) continue;		PORTD.OUTTGL = PIN5_bm;	}}

uint8_t uart_isdata(void) {	if (usb_rxpacket_leftb) {		Endpoint_SelectEndpoint(CDC_RX_EPNUM);		return usb_rxpacket_leftb;	}	usb_process();	usb_rxpacket_leftb = CDC_Device_BytesReceived(&VirtualSerial_CDC_Interface);	return usb_rxpacket_leftb;}

void Endpoint_StallTransaction(void){	USB_Endpoint_SelectedHandle->CTRL |= USB_EP_STALL_bm;	if ((USB_Endpoint_SelectedHandle->CTRL & USB_EP_TYPE_gm) == USB_EP_TYPE_CONTROL_gc)	{		Endpoint_SelectEndpoint(USB_Endpoint_SelectedEndpoint ^ ENDPOINT_DIR_IN);		USB_Endpoint_SelectedHandle->CTRL |= USB_EP_STALL_bm;	}}

/** Handler for the CMD_SIGN_ON command, returning the programmer ID string to the host. */static void V2Protocol_SignOn(void){	Endpoint_ClearOUT();	if ( use_libusb == true ) {		Endpoint_SelectEndpoint(AVRISP_DATA_IN_EPNUM__LIBUSB);	} else {		Endpoint_SelectEndpoint(AVRISP_DATA_IN_EPNUM__DEFAULT);	}	Endpoint_SetEndpointDirection(ENDPOINT_DIR_IN);	Endpoint_Write_8(CMD_SIGN_ON);	Endpoint_Write_8(STATUS_CMD_OK);	Endpoint_Write_8(sizeof(PROGRAMMER_ID) - 1);	Endpoint_Write_Stream_LE(PROGRAMMER_ID, (sizeof(PROGRAMMER_ID) - 1), NULL);	Endpoint_ClearIN();}

uint8_t PRNT_Device_SendData(USB_ClassInfo_PRNT_Device_t* const PRNTInterfaceInfo,                             const void* const Buffer,                             const uint16_t Length){	if (USB_DeviceState != DEVICE_STATE_Configured)	  return ENDPOINT_RWSTREAM_DeviceDisconnected;	Endpoint_SelectEndpoint(PRNTInterfaceInfo->Config.DataINEndpoint.Address);	return Endpoint_Write_Stream_LE(Buffer, Length, NULL);}

ISR(USB_COM_vect, ISR_BLOCK){	uint8_t PrevSelectedEndpoint = Endpoint_GetCurrentEndpoint();	USB_USBTask();	USB_INT_Clear(USB_INT_ENDPOINT_SETUP);		Endpoint_SelectEndpoint(PrevSelectedEndpoint);}

void MS_Device_USBTask(USB_ClassInfo_MS_Device_t* const MSInterfaceInfo){	if (USB_DeviceState != DEVICE_STATE_Configured)	  return;	Endpoint_SelectEndpoint(MSInterfaceInfo->Config.DataOUTEndpoint.Address);	if (Endpoint_IsOUTReceived())	{		if (MS_Device_ReadInCommandBlock(MSInterfaceInfo))		{			if (MSInterfaceInfo->State.CommandBlock.Flags & MS_COMMAND_DIR_DATA_IN)			  Endpoint_SelectEndpoint(MSInterfaceInfo->Config.DataINEndpoint.Address);			bool SCSICommandResult = CALLBACK_MS_Device_SCSICommandReceived(MSInterfaceInfo);			MSInterfaceInfo->State.CommandStatus.Status              = (SCSICommandResult) ? MS_SCSI_COMMAND_Pass : MS_SCSI_COMMAND_Fail;			MSInterfaceInfo->State.CommandStatus.Signature           = CPU_TO_LE32(MS_CSW_SIGNATURE);			MSInterfaceInfo->State.CommandStatus.Tag                 = MSInterfaceInfo->State.CommandBlock.Tag;			MSInterfaceInfo->State.CommandStatus.DataTransferResidue = MSInterfaceInfo->State.CommandBlock.DataTransferLength;			if (!(SCSICommandResult) && (le32_to_cpu(MSInterfaceInfo->State.CommandStatus.DataTransferResidue)))			  Endpoint_StallTransaction();			MS_Device_ReturnCommandStatus(MSInterfaceInfo);		}	}	if (MSInterfaceInfo->State.IsMassStoreReset)	{		Endpoint_ResetEndpoint(MSInterfaceInfo->Config.DataOUTEndpoint.Address);		Endpoint_ResetEndpoint(MSInterfaceInfo->Config.DataINEndpoint.Address);		Endpoint_SelectEndpoint(MSInterfaceInfo->Config.DataOUTEndpoint.Address);		Endpoint_ClearStall();		Endpoint_ResetDataToggle();		Endpoint_SelectEndpoint(MSInterfaceInfo->Config.DataINEndpoint.Address);		Endpoint_ClearStall();		Endpoint_ResetDataToggle();		MSInterfaceInfo->State.IsMassStoreReset = false;	}}

/** Handler for the CMD_RESET_PROTECTION command, implemented as a dummy ACK function as *  no target short-circuit protection is currently implemented. */static void V2Protocol_ResetProtection(void){	Endpoint_ClearOUT();	Endpoint_SelectEndpoint(AVRISP_DATA_IN_EPNUM);	Endpoint_SetEndpointDirection(ENDPOINT_DIR_IN);	Endpoint_Write_Byte(CMD_RESET_PROTECTION);	Endpoint_Write_Byte(STATUS_CMD_OK);	Endpoint_ClearIN();}

uint8_t CDC_Device_SendData_P(USB_ClassInfo_CDC_Device_t* const CDCInterfaceInfo,                            const void* const Buffer,                            const uint16_t Length){	if ((USB_DeviceState != DEVICE_STATE_Configured) || !(CDCInterfaceInfo->State.LineEncoding.BaudRateBPS))	  return ENDPOINT_RWSTREAM_DeviceDisconnected;	Endpoint_SelectEndpoint(CDCInterfaceInfo->Config.DataINEndpoint.Address);	return Endpoint_Write_PStream_LE(Buffer, Length, NULL);}

static bool MS_Device_ReadInCommandBlock(USB_ClassInfo_MS_Device_t* const MSInterfaceInfo){	uint16_t BytesProcessed;	Endpoint_SelectEndpoint(MSInterfaceInfo->Config.PortNumber, MSInterfaceInfo->Config.DataOUTEndpointNumber);		BytesProcessed = 0;	while (Endpoint_Read_Stream_LE(MSInterfaceInfo->Config.PortNumber,																 &MSInterfaceInfo->State.CommandBlock,	                               (sizeof(MS_CommandBlockWrapper_t) - 16), &BytesProcessed) ==	                               ENDPOINT_RWSTREAM_IncompleteTransfer)	{		if (MSInterfaceInfo->State.IsMassStoreReset)		  return false;	}	if ((MSInterfaceInfo->State.CommandBlock.Signature         != CPU_TO_LE32(MS_CBW_SIGNATURE))     ||	    (MSInterfaceInfo->State.CommandBlock.LUN               >= MSInterfaceInfo->Config.TotalLUNs) ||		(MSInterfaceInfo->State.CommandBlock.Flags              & 0x1F)                              ||		(MSInterfaceInfo->State.CommandBlock.SCSICommandLength == 0)                                 ||		(MSInterfaceInfo->State.CommandBlock.SCSICommandLength >  16))	{		Endpoint_StallTransaction(MSInterfaceInfo->Config.PortNumber);		Endpoint_SelectEndpoint(MSInterfaceInfo->Config.PortNumber, MSInterfaceInfo->Config.DataINEndpointNumber);		Endpoint_StallTransaction(MSInterfaceInfo->Config.PortNumber);		return false;	}	BytesProcessed = 0;	while (Endpoint_Read_Stream_LE(MSInterfaceInfo->Config.PortNumber,															    &MSInterfaceInfo->State.CommandBlock.SCSICommandData,	                                MSInterfaceInfo->State.CommandBlock.SCSICommandLength, &BytesProcessed) ==	                                ENDPOINT_RWSTREAM_IncompleteTransfer)	{		if (MSInterfaceInfo->State.IsMassStoreReset)		  return false;	}//	Endpoint_ClearOUT();	return true;}

uint8_t CDC_Device_SendString(USB_ClassInfo_CDC_Device_t* const CDCInterfaceInfo,                              const char* const Data,                              const uint16_t Length){	if ((USB_DeviceState != DEVICE_STATE_Configured) || !(CDCInterfaceInfo->State.LineEncoding.BaudRateBPS))	  return ENDPOINT_RWSTREAM_DeviceDisconnected;		Endpoint_SelectEndpoint(CDCInterfaceInfo->Config.DataINEndpointNumber);	return Endpoint_Write_Stream_LE(Data, Length, NO_STREAM_CALLBACK);}

/** Reads the next OUT report from the host from the OUT endpoint, if one has been sent. */void ReceiveNextReport(void){  static struct  {    struct    {      unsigned char type;      unsigned char length;    } header;    unsigned char buffer[EPSIZE];  } packet = { .header.type = BYTE_OUT_REPORT };  uint16_t length = 0;	/* Select the OUT Report Endpoint */	Endpoint_SelectEndpoint(OUT_EPNUM);	/* Check if OUT Endpoint contains a packet */	if (Endpoint_IsOUTReceived())	{		/* Check to see if the packet contains data */		if (Endpoint_IsReadWriteAllowed())		{      /* Read OUT Report Data */      uint8_t ErrorCode = Endpoint_Read_Stream_LE(packet.buffer, sizeof(packet.buffer), &length);      if(ErrorCode == ENDPOINT_RWSTREAM_NoError)      {        length = sizeof(packet.buffer);      }		}		/* Handshake the OUT Endpoint - clear endpoint and ready for next report */		Endpoint_ClearOUT();		if(length)		{		  packet.header.length = length & 0xFF;      Serial_SendData(&packet, sizeof(packet.header) + packet.header.length);		}	}}/** Function to manage HID report generation and transmission to the host, when in report mode. */void HID_Task(void){	/* Device must be connected and configured for the task to run */	if (USB_DeviceState != DEVICE_STATE_Configured)	  return;  /* Send the next keypress report to the host */	SendNextReport();	/* Process the LED report sent from the host */	ReceiveNextReport();}

uint8_t TEMPLATE_FUNC_NAME (const void* const Buffer,                            uint16_t Length){	uint8_t* DataStream     = ((uint8_t*)Buffer + TEMPLATE_BUFFER_OFFSET(Length));	bool     LastPacketFull = false;	Endpoint_SelectEndpoint(USB_Endpoint_SelectedEndpoint | ENDPOINT_DIR_IN);	if (Length > USB_ControlRequest.wLength)	  Length = USB_ControlRequest.wLength;	else if (!(Length))	  Endpoint_ClearIN();	while (Length || LastPacketFull)	{		uint8_t USB_DeviceState_LCL = USB_DeviceState;		if (USB_DeviceState_LCL == DEVICE_STATE_Unattached)		  return ENDPOINT_RWCSTREAM_DeviceDisconnected;		else if (USB_DeviceState_LCL == DEVICE_STATE_Suspended)		  return ENDPOINT_RWCSTREAM_BusSuspended;		else if (Endpoint_IsSETUPReceived())		  return ENDPOINT_RWCSTREAM_HostAborted;		else if (Endpoint_IsOUTReceived())		  break;		if (Endpoint_IsINReady())		{			uint16_t BytesInEndpoint = Endpoint_BytesInEndpoint();			while (Length && (BytesInEndpoint < USB_Device_ControlEndpointSize))			{				TEMPLATE_TRANSFER_BYTE(DataStream);				TEMPLATE_BUFFER_MOVE(DataStream, 1);				Length--;				BytesInEndpoint++;			}			LastPacketFull = (BytesInEndpoint == USB_Device_ControlEndpointSize);			Endpoint_ClearIN();		}	}	while (!(Endpoint_IsOUTReceived()))	{		uint8_t USB_DeviceState_LCL = USB_DeviceState;		if (USB_DeviceState_LCL == DEVICE_STATE_Unattached)		  return ENDPOINT_RWCSTREAM_DeviceDisconnected;		else if (USB_DeviceState_LCL == DEVICE_STATE_Suspended)		  return ENDPOINT_RWCSTREAM_BusSuspended;	}	return ENDPOINT_RWCSTREAM_NoError;}

/** Function to read in a command block from the host, via the bulk data OUT endpoint. This function reads in the next command block *  if one has been issued, and performs validation to ensure that the block command is valid. * *  /return Boolean true if a valid command block has been read in from the endpoint, false otherwise */static bool ReadInCommandBlock(void){	/* Select the Data Out endpoint */	Endpoint_SelectEndpoint(MASS_STORAGE_OUT_EPNUM);	/* Read in command block header */	Endpoint_Read_Stream_LE(&CommandBlock, (sizeof(CommandBlock) - sizeof(CommandBlock.SCSICommandData)),	                        StreamCallback_AbortOnMassStoreReset);	/* Check if the current command is being aborted by the host */	if (IsMassStoreReset)	  return false;	/* Verify the command block - abort if invalid */	if ((CommandBlock.Signature         != CBW_SIGNATURE) ||	    (CommandBlock.LUN               >= TOTAL_LUNS)    ||		(CommandBlock.Flags              & 0x1F)          ||		(CommandBlock.SCSICommandLength == 0)             ||		(CommandBlock.SCSICommandLength >  MAX_SCSI_COMMAND_LENGTH))	{		/* Stall both data pipes until reset by host */		Endpoint_StallTransaction();		Endpoint_SelectEndpoint(MASS_STORAGE_IN_EPNUM);		Endpoint_StallTransaction();				return false;	}	/* Read in command block command data */	Endpoint_Read_Stream_LE(&CommandBlock.SCSICommandData,	                        CommandBlock.SCSICommandLength,	                        StreamCallback_AbortOnMassStoreReset);	  	/* Check if the current command is being aborted by the host */	if (IsMassStoreReset)	  return false;	/* Finalize the stream transfer to send the last packet */	Endpoint_ClearOUT();		return true;}

bool RNDIS_Device_IsPacketReceived(USB_ClassInfo_RNDIS_Device_t* const RNDISInterfaceInfo){	if ((USB_DeviceState != DEVICE_STATE_Configured) ||	    (RNDISInterfaceInfo->State.CurrRNDISState != RNDIS_Data_Initialized))	{		return false;	}	Endpoint_SelectEndpoint(RNDISInterfaceInfo->Config.DataOUTEndpoint.Address);	return Endpoint_IsOUTReceived();}

static void SideShow_GetCurrentUser(SideShow_PacketHeader_t* PacketHeader){	Endpoint_ClearOUT();	PacketHeader->Length = sizeof(SideShow_PacketHeader_t) + sizeof(uint32_t) + UserSID.LengthInBytes;	Endpoint_SelectEndpoint(SIDESHOW_IN_EPNUM);	Endpoint_Write_Stream_LE(PacketHeader, sizeof(SideShow_PacketHeader_t));	SideShow_Write_Unicode_String(&UserSID);	Endpoint_ClearIN();}

static void SideShow_SetCurrentUser(SideShow_PacketHeader_t* PacketHeader){	SideShow_Read_Unicode_String(&UserSID, sizeof(UserSID.UnicodeString));	Endpoint_ClearOUT();		PacketHeader->Length = sizeof(SideShow_PacketHeader_t);	Endpoint_SelectEndpoint(SIDESHOW_IN_EPNUM);	Endpoint_Write_Stream_LE(PacketHeader, sizeof(SideShow_PacketHeader_t));	Endpoint_ClearIN();}

/* * The Linux and OSX call the configuration changed entry each time * a transaction is started (e.g., multiple runs of cbmctrl status). * We need to reset the endpoints before reconfiguring them, otherwise * we get a hang the second time through. * * We keep the original endpoint selected after returning. */voidUSB_ResetConfig(){    static uint8_t endpoints[] = {        XUM_BULK_IN_ENDPOINT, XUM_BULK_OUT_ENDPOINT, 0,    };    uint8_t lastEndpoint, *endp;    lastEndpoint = Endpoint_GetCurrentEndpoint();    for (endp = endpoints; *endp != 0; endp++) {        Endpoint_SelectEndpoint(*endp);        Endpoint_ResetFIFO(*endp);        Endpoint_ResetDataToggle();        if (Endpoint_IsStalled())            Endpoint_ClearStall();    }    Endpoint_SelectEndpoint(lastEndpoint);}

/** Handler for the XPROG CRC command to read a specific memory space's CRC value for comparison between the *  attached device's memory and a data set on the host. */static void XPROGProtocol_ReadCRC(void){	uint8_t ReturnStatus = XPROG_ERR_OK;	struct	{		uint8_t CRCType;	} ReadCRC_XPROG_Params;	Endpoint_Read_Stream_LE(&ReadCRC_XPROG_Params, sizeof(ReadCRC_XPROG_Params), NULL);	Endpoint_ClearOUT();	Endpoint_SelectEndpoint(AVRISP_DATA_IN_EPADDR);	Endpoint_SetEndpointDirection(ENDPOINT_DIR_IN);	uint32_t MemoryCRC;	if (XPROG_SelectedProtocol == XPROG_PROTOCOL_PDI)	{		uint8_t CRCCommand;		/* Determine which NVM command to send to the device depending on the memory to CRC */		switch (ReadCRC_XPROG_Params.CRCType)		{			case XPROG_CRC_APP:				CRCCommand = XMEGA_NVM_CMD_APPCRC;				break;			case XPROG_CRC_BOOT:				CRCCommand = XMEGA_NVM_CMD_BOOTCRC;				break;			default:				CRCCommand = XMEGA_NVM_CMD_FLASHCRC;				break;		}		/* Perform and retrieve the memory CRC, indicate timeout if occurred */		if (!(XMEGANVM_GetMemoryCRC(CRCCommand, &MemoryCRC)))		  ReturnStatus = XPROG_ERR_TIMEOUT;	}	else	{		/* TPI does not support memory CRC */		ReturnStatus = XPROG_ERR_FAILED;	}	Endpoint_Write_8(CMD_XPROG);	Endpoint_Write_8(XPROG_CMD_CRC);	Endpoint_Write_8(ReturnStatus);	if (ReturnStatus == XPROG_ERR_OK)	{		Endpoint_Write_8(MemoryCRC >> 16);		Endpoint_Write_16_LE(MemoryCRC & 0xFFFF);	}

void Endpoint_ClearEndpoints(void){	for (uint8_t EPNum = 0; EPNum < ENDPOINT_TOTAL_ENDPOINTS; EPNum++)	{		Endpoint_SelectEndpoint(EPNum);		(&AVR32_USBB.uecfg0)[EPNum]    = 0;		(&AVR32_USBB.uecon0clr)[EPNum] = -1;		USB_Endpoint_FIFOPos[EPNum]    = &AVR32_USBB_SLAVE[EPNum * 0x10000];		Endpoint_DisableEndpoint();	}}

uint8_t uart_recv(void) {	do {		if (usb_rxpacket_leftb) {			uint8_t d;			Endpoint_SelectEndpoint(CDC_RX_EPNUM);			d = Endpoint_Read_Byte();			usb_rxpacket_leftb--;			if (!usb_rxpacket_leftb)				Endpoint_ClearOUT();			return d;		}		usb_process();		usb_rxpacket_leftb = CDC_Device_BytesReceived(&VirtualSerial_CDC_Interface);		if ((!usb_rxpacket_leftb)&&(usb_txpacket_leftb)) {			Endpoint_SelectEndpoint(CDC_TX_EPNUM);	                Endpoint_ClearIN(); /* Go data, GO. */	                usb_txpacket_leftb = 0;	        }	} while (1);}

uint8_t Device_SendByte(USB_EPInfo_Device_t* EPInfo, const uint8_t Data){	if (USB_DeviceState != DEVICE_STATE_Configured) return ENDPOINT_RWSTREAM_DeviceDisconnected;	// USB_DeviceState 	// USBTask.h	// Indicates the current device state machine state. When in device mode, 	// this indicates the state via one of the values of the 	// USB_Device_States_t enum values.	//	// DEVICE_STATE_Configured(4)	// Device.h	// This state indicates that the device has been enumerated by the host 	// and is ready for USB communications to begin.	//	// ENDPOINT_RWSTREAM_DeviceDisconnected(2)	// EndpointStream.h	// Device was disconnected from the host during the transfer.		Endpoint_SelectEndpoint(EPInfo->DataINEPAddress);	// Endpoint_AVR8.h	// Select the given endpoint address.	if (!(Endpoint_IsReadWriteAllowed()))	// Endpoint_AVR8.h	// Determines if the currently selected endpoint may be read from 	// (if data is waiting in the endpoint bank and the endpoint is an OUT 	// direction, or if the bank is not yet full if the endpoint is an IN 	// direction). This function will return false if an error has occurred in 	// the endpoint, if the endpoint is an OUT direction and no packet (or an 	// empty packet) has been received, or if the endpoint is an IN direction 	// and the endpoint bank is full.	{		Endpoint_ClearIN();		// Endpoint_AVR8.h		// Sends an IN packet to the host on the currently selected endpoint, freeing up the endpoint for the next packet and switching to the alternative endpoint bank if double banked				uint8_t ErrorCode;		if ((ErrorCode = Endpoint_WaitUntilReady()) != ENDPOINT_READYWAIT_NoError)		// Endpoint_WaitUntilReady		// Endpoint_AVR8.h		// Spin-loops until the currently selected non-control endpoint is 		// ready for the next packet of data to be read or written to it.		//		// ENDPOINT_READYWAIT_NoError(0)		// Endpoint_AVR8.h		// Endpoint is ready for next packet, no error.			return ErrorCode;	}	Endpoint_Write_8(Data);	// Endpoint_AVR8.h	// Writes one byte to the currently selected endpoint's bank, for IN direction endpoints.	return ENDPOINT_READYWAIT_NoError;}

static void MS_Device_ReturnCommandStatus(USB_ClassInfo_MS_Device_t* const MSInterfaceInfo){	Endpoint_SelectEndpoint(MSInterfaceInfo->Config.DataOUTEndpointNumber);	while (Endpoint_IsStalled())	{		#if !defined(INTERRUPT_CONTROL_ENDPOINT)		USB_USBTask();		#endif		if (MSInterfaceInfo->State.IsMassStoreReset)		  return;	}	Endpoint_SelectEndpoint(MSInterfaceInfo->Config.DataINEndpointNumber);	while (Endpoint_IsStalled())	{		#if !defined(INTERRUPT_CONTROL_ENDPOINT)		USB_USBTask();		#endif		if (MSInterfaceInfo->State.IsMassStoreReset)		  return;	}	uint16_t BytesProcessed = 0;	while (Endpoint_Write_Stream_LE(&MSInterfaceInfo->State.CommandStatus,	                                sizeof(MS_CommandStatusWrapper_t), &BytesProcessed) ==	                                ENDPOINT_RWSTREAM_IncompleteTransfer)	{		#if !defined(INTERRUPT_CONTROL_ENDPOINT)		USB_USBTask();		#endif		if (MSInterfaceInfo->State.IsMassStoreReset)		  return;	}	Endpoint_ClearIN();}

/** Handler for the CMD_SIGN_ON command, returning the programmer ID string to the host. */static void V2Protocol_SignOn(void){	Endpoint_ClearOUT();	Endpoint_SelectEndpoint(AVRISP_DATA_IN_EPNUM);	Endpoint_SetEndpointDirection(ENDPOINT_DIR_IN);	Endpoint_Write_Byte(CMD_SIGN_ON);	Endpoint_Write_Byte(STATUS_CMD_OK);	Endpoint_Write_Byte(sizeof(PROGRAMMER_ID) - 1);	Endpoint_Write_Stream_LE(PROGRAMMER_ID, (sizeof(PROGRAMMER_ID) - 1), NO_STREAM_CALLBACK);	Endpoint_ClearIN();}

void MIDI_Device_USBTask(USB_ClassInfo_MIDI_Device_t* const MIDIInterfaceInfo){	if (USB_DeviceState != DEVICE_STATE_Configured)	  return;	#if !defined(NO_CLASS_DRIVER_AUTOFLUSH)	Endpoint_SelectEndpoint(MIDIInterfaceInfo->Config.DataINEndpoint.Address);	if (Endpoint_IsINReady())	  MIDI_Device_Flush(MIDIInterfaceInfo);	#endif}

bool Endpoint_ConfigureEndpoint_Prv(const uint8_t Number, const uint8_t UECFG0XData, const uint8_t UECFG1XData){	Endpoint_SelectEndpoint(Number);	Endpoint_EnableEndpoint();	UECFG1X = 0;	UECFG0X = UECFG0XData;	UECFG1X = UECFG1XData;	return Endpoint_IsConfigured();}

static void SideShow_GetString(SideShow_PacketHeader_t* PacketHeader, void* UnicodeStruct){	Endpoint_ClearOUT();	PacketHeader->Length = sizeof(SideShow_PacketHeader_t) +	                       sizeof(uint32_t) + ((Unicode_String_t*)UnicodeStruct)->LengthInBytes;		Endpoint_SelectEndpoint(SIDESHOW_IN_EPNUM);	Endpoint_Write_Stream_LE(PacketHeader, sizeof(SideShow_PacketHeader_t));	SideShow_Write_Unicode_String(UnicodeStruct);	Endpoint_ClearIN();}

void CDC_Device_USBTask(USB_ClassInfo_CDC_Device_t* CDCInterfaceInfo){	if ((USB_DeviceState != DEVICE_STATE_Configured) || !(CDCInterfaceInfo->State.LineEncoding.BaudRateBPS))	  return;	Endpoint_SelectEndpoint(CDCInterfaceInfo->Config.DataOUTEndpointNumber);	if (Endpoint_IsOUTReceived() && !(Endpoint_BytesInEndpoint()))	  Endpoint_ClearOUT();	  	CDC_Device_Flush(CDCInterfaceInfo);}