C++ Endpoint_IsINReady函数代码示例

uint8_t Endpoint_Write_Control_Stream_LE(const void* Buffer, uint16_t Length)
{
	uint8_t* DataStream     = (uint8_t*)Buffer;
	bool     LastPacketFull = false;
	
	if (Length > USB_ControlRequest.wLength)
	  Length = USB_ControlRequest.wLength;
	
	while (Length && !(Endpoint_IsOUTReceived()))
	{
		while (!(Endpoint_IsINReady()));
		
		while (Length && (Endpoint_BytesInEndpoint() < USB_ControlEndpointSize))
		{
			Endpoint_Write_Byte(*(DataStream++));
			Length--;
		}
		
		LastPacketFull = (Endpoint_BytesInEndpoint() == USB_ControlEndpointSize);
		Endpoint_ClearIN();
	}
	
	if (Endpoint_IsOUTReceived())
	  return ENDPOINT_RWCSTREAM_HostAborted;
	
	if (LastPacketFull)
	{
		while (!(Endpoint_IsINReady()));
		Endpoint_ClearIN();
	}
	
	while (!(Endpoint_IsOUTReceived()));

	return ENDPOINT_RWCSTREAM_NoError;
}

void PRNT_Device_ProcessControlRequest(USB_ClassInfo_PRNT_Device_t* const PRNTInterfaceInfo)
{
	if (!(Endpoint_IsSETUPReceived()))
	  return;

	if (USB_ControlRequest.wIndex != PRNTInterfaceInfo->Config.InterfaceNumber)
	  return;

	switch (USB_ControlRequest.bRequest)
	{
		case PRNT_REQ_GetDeviceID:
			if (USB_ControlRequest.bmRequestType == (REQDIR_DEVICETOHOST | REQTYPE_CLASS | REQREC_INTERFACE))
			{
				Endpoint_ClearSETUP();

				while (!(Endpoint_IsINReady()))
				{
					if (USB_DeviceState == DEVICE_STATE_Unattached)
					  return;
				}

				uint16_t IEEEStringLen = strlen(PRNTInterfaceInfo->Config.IEEE1284String);
				Endpoint_Write_16_BE(IEEEStringLen);
				Endpoint_Write_Control_Stream_LE(PRNTInterfaceInfo->Config.IEEE1284String, IEEEStringLen);
				Endpoint_ClearStatusStage();
			}

			break;
		case PRNT_REQ_GetPortStatus:
			if (USB_ControlRequest.bmRequestType == (REQDIR_DEVICETOHOST | REQTYPE_CLASS | REQREC_INTERFACE))
			{
				Endpoint_ClearSETUP();

				while (!(Endpoint_IsINReady()))
				{
					if (USB_DeviceState == DEVICE_STATE_Unattached)
					  return;
				}

				Endpoint_Write_8(PRNTInterfaceInfo->State.PortStatus);
				Endpoint_ClearStatusStage();
			}

			break;
		case PRNT_REQ_SoftReset:
			if (USB_ControlRequest.bmRequestType == (REQDIR_HOSTTODEVICE | REQTYPE_CLASS | REQREC_INTERFACE))
			{
				Endpoint_ClearSETUP();
				Endpoint_ClearStatusStage();

				PRNTInterfaceInfo->State.IsPrinterReset = true;

				EVENT_PRNT_Device_SoftReset(PRNTInterfaceInfo);
			}

			break;
	}
}

size_t USBSerial::write(uint8_t c)
{
        /* only try to send bytes if the high-level CDC connection itself 
         is open (not just the pipe) - the OS should set lineState when the port
         is opened and clear lineState when the port is closed.
         bytes sent before the user opens the connection or after
         the connection is closed are lost - just like with a UART. */
        
        // TODO - ZE - check behavior on different OSes and test what happens if an
        // open connection isn't broken cleanly (cable is yanked out, host dies
        // or locks up, or host virtual serial port hangs)
        if (LineState > 0) {
                Endpoint_SelectEndpoint(CDC_TX_EPADDR);
                
                if (!Endpoint_IsReadWriteAllowed()) {
                        Endpoint_ClearIN();
                        while (!Endpoint_IsINReady() && USB_DeviceState == DEVICE_STATE_Configured) {
                                USB_USBTask();
                        }
                }
                
                set_blink_LED();
                Endpoint_Write_8(c);
                
                return 1;
        } else {
                setWriteError();
                return 0;
        }
}

void usb_debug( char *msg )
{
	/* Device must be connected and configured for the task to run */
	if (USB_DeviceState != DEVICE_STATE_Configured)
	  return;
	
	Endpoint_SelectEndpoint(GENERIC_IN_EPADDR);

	/* Check to see if the host is ready to accept another packet */
	if (Endpoint_IsINReady())
	{
		/* Create a temporary buffer to hold the report to send to the host */
		uint8_t GenericData[BUFFER_EPSIZE];
		
		int len = strlen( msg );

		GenericData[0] = len;
		GenericData[1] = 0x01;	// debug msg
		
		for ( int c = 0; c < len; c++ )
			GenericData[c + 2] = *msg++;

		/* Write Generic Report Data */
		Endpoint_Write_Stream_LE(&GenericData, sizeof(GenericData), NULL);

		/* Finalize the stream transfer to send the last packet */
		Endpoint_ClearIN();
	}	

	_delay_ms(200);
}

void usbGetTemperature()
{
	Endpoint_ClearSETUP();//ack setup packet
	u8 sendData = 0;
	measureTemperature();
	while (sendData < 2)
	{
		while (!Endpoint_IsINReady())
		{
			//wait until host is ready
		}
		u16 value = measureTemperature();
		Endpoint_Write_8(value>>8);
		sendData++;
		Endpoint_Write_8(value & 0xff);
		sendData++;
		Endpoint_ClearIN();
	}
	//while (!Endpoint_IsOUTReceived())
	{
		//wait for host to send status
	}
	//Endpoint_ClearOUT();//send message
	//Endpoint_ClearStatusStage();//success :D

}

void RNDIS_Device_USBTask(USB_ClassInfo_RNDIS_Device_t* const RNDISInterfaceInfo)
{
	if (USB_DeviceState != DEVICE_STATE_Configured)
	  return;

	Endpoint_SelectEndpoint(RNDISInterfaceInfo->Config.NotificationEndpoint.Address);

	if (Endpoint_IsINReady() && RNDISInterfaceInfo->State.ResponseReady)
	{
		USB_Request_Header_t Notification = (USB_Request_Header_t)
			{
				.bmRequestType = (REQDIR_DEVICETOHOST | REQTYPE_CLASS | REQREC_INTERFACE),
				.bRequest      = RNDIS_NOTIF_ResponseAvailable,
				.wValue        = CPU_TO_LE16(0),
				.wIndex        = CPU_TO_LE16(0),
				.wLength       = CPU_TO_LE16(0),
			};

		Endpoint_Write_Stream_LE(&Notification, sizeof(USB_Request_Header_t), NULL);

		Endpoint_ClearIN();

		RNDISInterfaceInfo->State.ResponseReady = false;
	}
}

void MS_Device_ProcessControlRequest(USB_ClassInfo_MS_Device_t* const MSInterfaceInfo)
{
	if (!(Endpoint_IsSETUPReceived()))
	  return;

	if (USB_ControlRequest.wIndex != MSInterfaceInfo->Config.InterfaceNumber)
	  return;

	switch (USB_ControlRequest.bRequest)
	{
		case MS_REQ_MassStorageReset:
			if (USB_ControlRequest.bmRequestType == (REQDIR_HOSTTODEVICE | REQTYPE_CLASS | REQREC_INTERFACE))
			{
				Endpoint_ClearSETUP();
				Endpoint_ClearStatusStage();

				MSInterfaceInfo->State.IsMassStoreReset = true;
			}

			break;
		case MS_REQ_GetMaxLUN:
			if (USB_ControlRequest.bmRequestType == (REQDIR_DEVICETOHOST | REQTYPE_CLASS | REQREC_INTERFACE))
			{
				Endpoint_ClearSETUP();
				while (!(Endpoint_IsINReady()));
				Endpoint_Write_8(MSInterfaceInfo->Config.TotalLUNs - 1);
				Endpoint_ClearIN();
				Endpoint_ClearStatusStage();
			}

			break;
	}
}

/** Function to manage HID report generation and transmission to the host. */
void HID_Task(void)
{
	/* Device must be connected and configured for the task to run */
	if (USB_DeviceState != DEVICE_STATE_Configured)
	  return;

	/* Select the Joystick Report Endpoint */
	Endpoint_SelectEndpoint(JOYSTICK_EPADDR);

	/* Check to see if the host is ready for another packet */
	if (Endpoint_IsINReady())
	{
		USB_JoystickReport_Data_t JoystickReportData;

		/* Create the next HID report to send to the host */
		GetNextReport(&JoystickReportData);

		/* Write Joystick Report Data */
		Endpoint_Write_Stream_LE(&JoystickReportData, sizeof(JoystickReportData), NULL);

		/* Finalize the stream transfer to send the last packet */
		Endpoint_ClearIN();

		/* Clear the report data afterwards */
		memset(&JoystickReportData, 0, sizeof(JoystickReportData));
	}
}

uint8_t Endpoint_WaitUntilReady(void)
{
	#if (USB_STREAM_TIMEOUT_MS < 0xFF)
	uint8_t  TimeoutMSRem = USB_STREAM_TIMEOUT_MS;	
	#else
	uint16_t TimeoutMSRem = USB_STREAM_TIMEOUT_MS;
	#endif

	for (;;)
	{
		if (Endpoint_GetEndpointDirection() == ENDPOINT_DIR_IN)
		{
			if (Endpoint_IsINReady())
			  return ENDPOINT_READYWAIT_NoError;
		}
		else
		{
			if (Endpoint_IsOUTReceived())
			  return ENDPOINT_READYWAIT_NoError;		
		}
		
		if (USB_DeviceState == DEVICE_STATE_Unattached)
		  return ENDPOINT_READYWAIT_DeviceDisconnected;
		else if (Endpoint_IsStalled())
		  return ENDPOINT_READYWAIT_EndpointStalled;
			  
		if (USB_INT_HasOccurred(USB_INT_SOFI))
		{
			USB_INT_Clear(USB_INT_SOFI);

			if (!(TimeoutMSRem--))
			  return ENDPOINT_READYWAIT_Timeout;
		}
	}
}

void PRNT_Device_USBTask(USB_ClassInfo_PRNT_Device_t* const PRNTInterfaceInfo)
{
	if (USB_DeviceState != DEVICE_STATE_Configured)
	  return;

	#if !defined(NO_CLASS_DRIVER_AUTOFLUSH)
	Endpoint_SelectEndpoint(PRNTInterfaceInfo->Config.DataINEndpoint.Address);

	if (Endpoint_IsINReady())
	  PRNT_Device_Flush(PRNTInterfaceInfo);
	#endif

	if (PRNTInterfaceInfo->State.IsPrinterReset)
	{
		Endpoint_ResetEndpoint(PRNTInterfaceInfo->Config.DataOUTEndpoint.Address);
		Endpoint_ResetEndpoint(PRNTInterfaceInfo->Config.DataINEndpoint.Address);

		Endpoint_SelectEndpoint(PRNTInterfaceInfo->Config.DataOUTEndpoint.Address);
		Endpoint_ClearStall();
		Endpoint_ResetDataToggle();
		Endpoint_SelectEndpoint(PRNTInterfaceInfo->Config.DataINEndpoint.Address);
		Endpoint_ClearStall();
		Endpoint_ResetDataToggle();

		PRNTInterfaceInfo->State.IsPrinterReset = false;
	}
}

uint8_t TEMPLATE_FUNC_NAME (void* Buffer, uint16_t Length)
{
	uint8_t* DataStream = ((uint8_t*)Buffer + TEMPLATE_BUFFER_OFFSET(Length));
	
	if (!(Length))
	  Endpoint_ClearOUT();
	
	while (Length)
	{
		if (Endpoint_IsSETUPReceived())
		  return ENDPOINT_RWCSTREAM_HostAborted;

		if (USB_DeviceState == DEVICE_STATE_Unattached)
		  return ENDPOINT_RWCSTREAM_DeviceDisconnected;
		  
		if (Endpoint_IsOUTReceived())
		{
			while (Length && Endpoint_BytesInEndpoint())
			{
				TEMPLATE_TRANSFER_BYTE(DataStream);
				Length--;
			}
			
			Endpoint_ClearOUT();
		}		  
	}
	
	while (!(Endpoint_IsINReady()))
	{
		if (USB_DeviceState == DEVICE_STATE_Unattached)
		  return ENDPOINT_RWCSTREAM_DeviceDisconnected;
	}
	
	return ENDPOINT_RWCSTREAM_NoError;
}

void usbGetButtons()
{
	Endpoint_ClearSETUP();//ack setup packet
	u8 sendData = 0;
	while (sendData < 3)
	{
		while (!Endpoint_IsINReady())
		{
			//wait until host is ready
		}
		u8 state = stateButton(but1);;
		Endpoint_Write_8(state);
		sendData++;
		state = stateButton(but2);;
		Endpoint_Write_8(state);
		sendData++;
		state = stateButton(but3);;
		Endpoint_Write_8(state);
		sendData++;
		Endpoint_ClearIN();
	}
	//while (!Endpoint_IsOUTReceived())
	{
		//wait for host to send status
	}
	//Endpoint_ClearOUT();//send message
	//Endpoint_ClearStatusStage();//success :D
}

void HID_Task(void)
{
    if (USB_DeviceState != DEVICE_STATE_Configured)
      return;

    Endpoint_SelectEndpoint(GENERIC_OUT_EPNUM);

    if (Endpoint_IsOUTReceived())
    {
        if (Endpoint_IsReadWriteAllowed())
        {
            Endpoint_Read_Stream_LE(&HIDReportInData, sizeof(HIDReportInData), NULL);
        }
        Endpoint_ClearOUT();
    }

    Endpoint_SelectEndpoint(GENERIC_IN_EPNUM);

    if (Endpoint_IsINReady())
    {
        Endpoint_Write_Stream_LE(&HIDReportOutData, sizeof(HIDReportOutData), NULL);
        memset(&HIDReportOutData, 0, GENERIC_REPORT_SIZE + 1);
        Endpoint_ClearIN();
    }
}

/** Sends the next HID report to the host, via the IN endpoint. */
void SendNextReport(void)
{
	/* Select the IN Report Endpoint */
	Endpoint_SelectEndpoint(IN_EPNUM);

  if (ready && sendReport)
  {
    /* Wait until the host is ready to accept another packet */
    while (!Endpoint_IsINReady()) {}

		/* Write IN Report Data */
		Endpoint_Write_Stream_LE(report, sizeof(report), NULL);

		/* Finalize the stream transfer to send the last packet */
		Endpoint_ClearIN();

    sendReport = 0;

#ifdef REPORT_NB_INFO
		nbReports++;
		if(!nbReports) {
      Serial_SendData(info, sizeof(info));
		}
#endif
	}
}

// From Arduino/Serial to USB/Host 
void MIDI_To_Host(void)
{
	// Device must be connected and configured for the task to run
	if (USB_DeviceState != DEVICE_STATE_Configured) return;

	// Select the MIDI IN stream
	Endpoint_SelectEndpoint(MIDI_STREAM_IN_EPADDR);

	if (Endpoint_IsINReady())
	{
		if (mPendingMessageValid == true)
		{
			mPendingMessageValid = false;

			// Write the MIDI event packet to the endpoint
			Endpoint_Write_Stream_LE(&mCompleteMessage, sizeof(mCompleteMessage), NULL);

			// Clear out complete message
			memset(&mCompleteMessage, 0, sizeof(mCompleteMessage)); 

			// Send the data in the endpoint to the host
			Endpoint_ClearIN();

			LEDs_TurnOffLEDs(LEDS_LED2);
			tx_ticks = TICK_COUNT; 
		}
	}

}