예제 #1
0
uint8_t Pipe_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 (Pipe_GetPipeToken() == PIPE_TOKEN_IN)
		{
			if (Pipe_IsINReceived())
			  return PIPE_READYWAIT_NoError;
		}
		else
		{
			if (Pipe_IsOUTReady())
			  return PIPE_READYWAIT_NoError;		
		}

		if (Pipe_IsStalled())
		  return PIPE_READYWAIT_PipeStalled;
		else if (USB_HostState == HOST_STATE_Unattached)
		  return PIPE_READYWAIT_DeviceDisconnected;
			  
		if (USB_INT_HasOccurred(USB_INT_HSOFI))
		{
			USB_INT_Clear(USB_INT_HSOFI);

			if (!(TimeoutMSRem--))
			  return PIPE_READYWAIT_Timeout;
		}
	}
}
예제 #2
0
/** Routine to send the current CBW to the device, and increment the Tag value as needed.
 *
 *  \return A value from the Pipe_Stream_RW_ErrorCodes_t enum
 */
static uint8_t MassStore_SendCommand(void)
{
	uint8_t ErrorCode = PIPE_RWSTREAM_NoError;

	/* Each transmission should have a unique tag value, excluding values 0 and 0xFFFFFFFF */
	if (++MassStore_Tag == 0xFFFFFFFF)
	  MassStore_Tag = 1;

	/* Select the OUT data pipe for CBW transmission */
	Pipe_SelectPipe(MASS_STORE_DATA_OUT_PIPE);
	Pipe_Unfreeze();

	/* Write the CBW command to the OUT pipe */
	if ((ErrorCode = Pipe_Write_Stream_LE(&SCSICommandBlock, sizeof(CommandBlockWrapper_t))) != PIPE_RWSTREAM_NoError)
	  return ErrorCode;

	/* Send the data in the OUT pipe to the attached device */
	Pipe_ClearOUT();
	
	while(!(Pipe_IsOUTReady()));

	/* Freeze pipe after use */
	Pipe_Freeze();
	
	return PIPE_RWSTREAM_NoError;
}
예제 #3
0
/** Writes a report to the attached device.
 *
 *  \param[in] ReportOUTData  Buffer containing the report to send to the device
 *  \param[in] ReportLength  Length of the report to send
 */
void WriteNextReport(uint8_t* const ReportOUTData,
                     const uint16_t ReportLength)
{
	if (USB_HostState != HOST_STATE_Configured)
	  return;

	/* Select and unfreeze HID data OUT pipe */
	Pipe_SelectPipe(HID_DATA_OUT_PIPE);

	/* Not all HID devices have an OUT endpoint (some require OUT reports to be sent over the
	 * control endpoint instead) - check to see if the OUT endpoint has been initialized */
	if (Pipe_IsConfigured())
	{
		Pipe_Unfreeze();

		/* Ensure pipe is ready to be written to before continuing */
		if (!(Pipe_IsOUTReady()))
		{
			/* Refreeze the data OUT pipe */
			Pipe_Freeze();

			return;
		}

		/* Write out HID report data */
		Pipe_Write_Stream_LE(ReportOUTData, ReportLength, NULL);

		/* Clear the OUT endpoint, send last data packet */
		Pipe_ClearOUT();

		/* Refreeze the data OUT pipe */
		Pipe_Freeze();
	}
	else
	{
		/* Class specific request to send a HID report to the device */
		USB_ControlRequest = (USB_Request_Header_t)
			{
				.bmRequestType = (REQDIR_HOSTTODEVICE | REQTYPE_CLASS | REQREC_INTERFACE),
				.bRequest      = HID_REQ_SetReport,
				.wValue        = 0x02,
				.wIndex        = 0x01,
				.wLength       = ReportLength,
			};

		/* Select the control pipe for the request transfer */
		Pipe_SelectPipe(PIPE_CONTROLPIPE);

		/* Send the request to the device */
		USB_Host_SendControlRequest(ReportOUTData);
	}
}
예제 #4
0
/** Sends or receives the transaction's data stage to or from the attached device, reading or
 *  writing to the nominated buffer.
 *
 *  \param[in] SCSICommandBlock  Pointer to a SCSI command block structure being sent to the attached device
 *  \param[in,out]  BufferPtr    Pointer to the data buffer to read from or write to
 *
 *  \return A value from the Pipe_Stream_RW_ErrorCodes_t enum
 */
static uint8_t MassStore_SendReceiveData(CommandBlockWrapper_t* const SCSICommandBlock,
                                         void* BufferPtr)
{
	uint8_t  ErrorCode = PIPE_RWSTREAM_NoError;
	uint16_t BytesRem  = SCSICommandBlock->DataTransferLength;

	/* Check the direction of the SCSI command data stage */
	if (SCSICommandBlock->Flags & COMMAND_DIRECTION_DATA_IN)
	{
		/* Wait until the device has replied with some data */
		if ((ErrorCode = MassStore_WaitForDataReceived()) != PIPE_RWSTREAM_NoError)
		  return ErrorCode;

		/* Select the IN data pipe for data reception */
		Pipe_SelectPipe(MASS_STORE_DATA_IN_PIPE);
		Pipe_Unfreeze();

		/* Read in the block data from the pipe */
		if ((ErrorCode = Pipe_Read_Stream_LE(BufferPtr, BytesRem)) != PIPE_RWSTREAM_NoError)
		  return ErrorCode;

		/* Acknowledge the packet */
		Pipe_ClearIN();
	}
	else
	{
		/* Select the OUT data pipe for data transmission */
		Pipe_SelectPipe(MASS_STORE_DATA_OUT_PIPE);
		Pipe_Unfreeze();

		/* Write the block data to the pipe */
		if ((ErrorCode = Pipe_Write_Stream_LE(BufferPtr, BytesRem)) != PIPE_RWSTREAM_NoError)
		  return ErrorCode;

		/* Acknowledge the packet */
		Pipe_ClearOUT();

		while (!(Pipe_IsOUTReady()))
		{
			if (USB_HostState == HOST_STATE_Unattached)
			  return PIPE_RWSTREAM_DeviceDisconnected;
		}
	}

	/* Freeze used pipe after use */
	Pipe_Freeze();

	return PIPE_RWSTREAM_NoError;
}
예제 #5
0
파일: MassStorage.c 프로젝트: Eih3/v0.83
static uint8_t MS_Host_SendReceiveData(USB_ClassInfo_MS_Host_t* const MSInterfaceInfo,
                                       MS_CommandBlockWrapper_t* const SCSICommandBlock,
                                       void* BufferPtr)
{
	uint8_t  ErrorCode = PIPE_RWSTREAM_NoError;
	uint16_t BytesRem  = SCSICommandBlock->DataTransferLength;

	if (SCSICommandBlock->Flags & MS_COMMAND_DIR_DATA_IN)
	{
		if ((ErrorCode = MS_Host_WaitForDataReceived(MSInterfaceInfo)) != PIPE_RWSTREAM_NoError)
		{
			Pipe_Freeze();
			return ErrorCode;
		}

		Pipe_SelectPipe(MSInterfaceInfo->Config.DataINPipeNumber);
		Pipe_Unfreeze();

		if ((ErrorCode = Pipe_Read_Stream_LE(BufferPtr, BytesRem, NULL)) != PIPE_RWSTREAM_NoError)
		  return ErrorCode;

		Pipe_ClearIN();
	}
	else
	{
		Pipe_SelectPipe(MSInterfaceInfo->Config.DataOUTPipeNumber);
		Pipe_Unfreeze();

		if ((ErrorCode = Pipe_Write_Stream_LE(BufferPtr, BytesRem, NULL)) != PIPE_RWSTREAM_NoError)
		  return ErrorCode;

		Pipe_ClearOUT();

		while (!(Pipe_IsOUTReady()))
		{
			if (USB_HostState == HOST_STATE_Unattached)
			  return PIPE_RWSTREAM_DeviceDisconnected;
		}
	}

	Pipe_Freeze();

	return ErrorCode;
}
/** ISR to handle the reloading of the endpoint with the next sample. */
ISR(TIMER0_COMPA_vect, ISR_BLOCK)
{
	uint8_t PrevPipe = Pipe_GetCurrentPipe();

	Pipe_SelectPipe(AUDIO_DATA_OUT_PIPE);
	Pipe_Unfreeze();

	/* Check if the current pipe can be written to (device ready for more data) */
	if (Pipe_IsOUTReady())
	{
		int16_t AudioSample;

		#if defined(USE_TEST_TONE)
			static uint8_t SquareWaveSampleCount;
			static int16_t CurrentWaveValue;

			/* In test tone mode, generate a square wave at 1/256 of the sample rate */
			if (SquareWaveSampleCount++ == 0xFF)
			  CurrentWaveValue ^= 0x8000;

			/* Only generate audio if the board button is being pressed */
			AudioSample = (Buttons_GetStatus() & BUTTONS_BUTTON1) ? CurrentWaveValue : 0;
		#else
			/* Audio sample is ADC value scaled to fit the entire range */
			AudioSample = ((SAMPLE_MAX_RANGE / ADC_MAX_RANGE) * ADC_GetResult());

			#if defined(MICROPHONE_BIASED_TO_HALF_RAIL)
			/* Microphone is biased to half rail voltage, subtract the bias from the sample value */
			AudioSample -= (SAMPLE_MAX_RANGE / 2);
			#endif
		#endif

		Pipe_Write_16_LE(AudioSample);
		Pipe_Write_16_LE(AudioSample);

		if (!(Pipe_IsReadWriteAllowed()))
		  Pipe_ClearOUT();
	}

	Pipe_Freeze();
	Pipe_SelectPipe(PrevPipe);
}
예제 #7
0
/** Sends the given data directly to the printer via the data endpoints, for the sending of print commands in printer
 *  languages accepted by the attached printer (e.g. PCL).
 *
 *  \param[in] PrinterCommands  Pointer to the data to send to the attached printer
 *  \param[in] CommandSize  Size of the data to send to the attached printer
 *
 *  \return A value from the Pipe_Stream_RW_ErrorCodes_t enum
 */
uint8_t Printer_SendData(const void* const PrinterCommands, const uint16_t CommandSize)
{
	uint8_t ErrorCode;

	Pipe_SelectPipe(PRINTER_DATA_OUT_PIPE);
	Pipe_Unfreeze();
	
	if ((ErrorCode = Pipe_Write_Stream_LE(PrinterCommands, CommandSize)) != PIPE_RWSTREAM_NoError)
	  return ErrorCode;

	Pipe_ClearOUT();
	while (!(Pipe_IsOUTReady()))
	{
		if (USB_HostState == HOST_STATE_Unattached)
		  return PIPE_RWSTREAM_DeviceDisconnected;
	}
	
	Pipe_Freeze();

	return PIPE_RWSTREAM_NoError;
}
예제 #8
0
/** Sends or receives the transaction's data stage to or from the attached device, reading or
 *  writing to the nominated buffer.
 *
 *  \param  BufferPtr  Pointer to the data buffer to read from or write to
 *
 *  \return A value from the Pipe_Stream_RW_ErrorCodes_t enum
 */
static uint8_t MassStore_SendReceiveData(void* BufferPtr)
{
	uint8_t  ErrorCode = PIPE_RWSTREAM_NoError;
	uint16_t BytesRem  = SCSICommandBlock.Header.DataTransferLength;

	/* Check the direction of the SCSI command data stage */
	if (SCSICommandBlock.Header.Flags & COMMAND_DIRECTION_DATA_IN)
	{
		/* Select the IN data pipe for data reception */
		Pipe_SelectPipe(MASS_STORE_DATA_IN_PIPE);
		Pipe_Unfreeze();
		
		/* Read in the block data from the pipe */
		if ((ErrorCode = Pipe_Read_Stream_LE(BufferPtr, BytesRem)) != PIPE_RWSTREAM_NoError)
		  return ErrorCode;

		/* Acknowledge the packet */
		Pipe_ClearIN();
	}
	else
	{
		/* Select the OUT data pipe for data transmission */
		Pipe_SelectPipe(MASS_STORE_DATA_OUT_PIPE);
		Pipe_Unfreeze();

		/* Write the block data to the pipe */
		if ((ErrorCode = Pipe_Write_Stream_LE(BufferPtr, BytesRem)) != PIPE_RWSTREAM_NoError)
		  return ErrorCode;

		/* Acknowledge the packet */
		Pipe_ClearOUT();
		
		while (!(Pipe_IsOUTReady()));
	}
	
	/* Freeze used pipe after use */
	Pipe_Freeze();

	return PIPE_RWSTREAM_NoError;
}
예제 #9
0
파일: Pipe_AVR8.c 프로젝트: 40000ft/lufa
uint8_t Pipe_WaitUntilReady(void)
{
	#if (USB_STREAM_TIMEOUT_MS < 0xFF)
	uint8_t  TimeoutMSRem = USB_STREAM_TIMEOUT_MS;
	#else
	uint16_t TimeoutMSRem = USB_STREAM_TIMEOUT_MS;
	#endif

	uint16_t PreviousFrameNumber = USB_Host_GetFrameNumber();

	for (;;)
	{
		if (Pipe_GetPipeToken() == PIPE_TOKEN_IN)
		{
			if (Pipe_IsINReceived())
			  return PIPE_READYWAIT_NoError;
		}
		else
		{
			if (Pipe_IsOUTReady())
			  return PIPE_READYWAIT_NoError;
		}

		if (Pipe_IsStalled())
		  return PIPE_READYWAIT_PipeStalled;
		else if (USB_HostState == HOST_STATE_Unattached)
		  return PIPE_READYWAIT_DeviceDisconnected;

		uint16_t CurrentFrameNumber = USB_Host_GetFrameNumber();

		if (CurrentFrameNumber != PreviousFrameNumber)
		{
			PreviousFrameNumber = CurrentFrameNumber;

			if (!(TimeoutMSRem--))
			  return PIPE_READYWAIT_Timeout;
		}
	}
}
static uint8_t USB_Host_WaitForIOS(const uint8_t WaitType)
{
	#if (USB_HOST_TIMEOUT_MS < 0xFF)
	uint8_t  TimeoutCounter = USB_HOST_TIMEOUT_MS;
	#else
	uint16_t TimeoutCounter = USB_HOST_TIMEOUT_MS;
	#endif

	while (!(((WaitType == USB_HOST_WAITFOR_SetupSent)  && Pipe_IsSETUPSent())  ||
	         ((WaitType == USB_HOST_WAITFOR_InReceived) && Pipe_IsINReceived()) ||
	         ((WaitType == USB_HOST_WAITFOR_OutReady)   && Pipe_IsOUTReady())))
	{
		uint8_t ErrorCode;

		if ((ErrorCode = USB_Host_WaitMS(1)) != HOST_WAITERROR_Successful)
		  return ErrorCode;

		if (!(TimeoutCounter--))
		  return HOST_SENDCONTROL_SoftwareTimeOut;
	}

	return HOST_SENDCONTROL_Successful;
}
예제 #11
0
/** Writes a report to the attached device.
 *
 *  \param[in] ReportOUTData  Buffer containing the report to send to the device
 *  \param[in] ReportIndex    Index of the report in the device (zero if the device does not use multiple reports)
 *  \param[in] ReportType     Type of report to send, either REPORT_TYPE_OUT or REPORT_TYPE_FEATURE
 *  \param[in] ReportLength   Length of the report to send
 */
void WriteNextReport(uint8_t* ReportOUTData,
                     const uint8_t ReportIndex,
                     const uint8_t ReportType,
                     uint16_t ReportLength)
{
	/* Select the HID data OUT pipe */
	Pipe_SelectPipe(HID_DATA_OUT_PIPE);

	/* Not all HID devices have an OUT endpoint (some require OUT reports to be sent over the
	 * control endpoint instead) - check to see if the OUT endpoint has been initialized */
	if (Pipe_IsConfigured() && (ReportType == REPORT_TYPE_OUT))
	{
		Pipe_Unfreeze();

		/* Ensure pipe is ready to be written to before continuing */
		if (!(Pipe_IsOUTReady()))
		{
			/* Refreeze the data OUT pipe */
			Pipe_Freeze();

			return;
		}

		/* If the report index is used, send it before the report data */
		if (ReportIndex)
		  Pipe_Write_Byte(ReportIndex);

		/* Write out HID report data */
		Pipe_Write_Stream_LE(ReportOUTData, ReportLength);

		/* Clear the OUT endpoint, send last data packet */
		Pipe_ClearOUT();

		/* Refreeze the data OUT pipe */
		Pipe_Freeze();
	}
	else
	{
		/* Class specific request to send a HID report to the device */
		USB_ControlRequest = (USB_Request_Header_t)
			{
				.bmRequestType = (REQDIR_HOSTTODEVICE | REQTYPE_CLASS | REQREC_INTERFACE),
				.bRequest      = HID_REQ_SetReport,
				.wValue        = ((ReportType << 8) | ReportIndex),
				.wIndex        = 0,
				.wLength       = ReportLength,
			};

		/* Select the control pipe for the request transfer */
		Pipe_SelectPipe(PIPE_CONTROLPIPE);

		/* Send the request to the device */
		USB_Host_SendControlRequest(ReportOUTData);
	}
}

/** Task to set the configuration of the attached device after it has been enumerated, and to read and process
 *  HID reports from the device and to send reports if desired.
 */
void HID_Host_Task(void)
{
	uint8_t ErrorCode;

	/* Switch to determine what user-application handled host state the host state machine is in */
	switch (USB_HostState)
	{
		case HOST_STATE_Addressed:
			puts_P(PSTR("Getting Config Data.\r\n"));

			/* Get and process the configuration descriptor data */
			if ((ErrorCode = ProcessConfigurationDescriptor()) != SuccessfulConfigRead)
			{
				if (ErrorCode == ControlError)
				  puts_P(PSTR(ESC_FG_RED "Control Error (Get Configuration).\r\n"));
				else
				  puts_P(PSTR(ESC_FG_RED "Invalid Device.\r\n"));

				printf_P(PSTR(" -- Error Code: %d\r\n" ESC_FG_WHITE), ErrorCode);

				/* Indicate error status */
				LEDs_SetAllLEDs(LEDMASK_USB_ERROR);

				/* Wait until USB device disconnected */
				USB_HostState = HOST_STATE_WaitForDeviceRemoval;
				break;
			}

			/* Set the device configuration to the first configuration (rarely do devices use multiple configurations) */
			if ((ErrorCode = USB_Host_SetDeviceConfiguration(1)) != HOST_SENDCONTROL_Successful)
			{
				printf_P(PSTR(ESC_FG_RED "Control Error (Set Configuration).\r\n"
				                         " -- Error Code: %d\r\n" ESC_FG_WHITE), ErrorCode);

				/* Indicate error status */
				LEDs_SetAllLEDs(LEDMASK_USB_ERROR);

				/* Wait until USB device disconnected */
				USB_HostState = HOST_STATE_WaitForDeviceRemoval;
				break;
			}

			puts_P(PSTR("HID Device Enumerated.\r\n"));

			USB_HostState = HOST_STATE_Configured;
			break;
		case HOST_STATE_Configured:
			ReadNextReport();

			break;
	}
}