Template_Endpoint_RW.c 1.17 KB
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uint8_t TEMPLATE_FUNC_NAME (TEMPLATE_BUFFER_TYPE Buffer,
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                            uint16_t Length,
                            uint16_t* const BytesProcessed)
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{
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	uint8_t* DataStream      = ((uint8_t*)Buffer + TEMPLATE_BUFFER_OFFSET(Length));
	uint16_t BytesInTransfer = 0;
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	uint8_t  ErrorCode;
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	if ((ErrorCode = Endpoint_WaitUntilReady()))
	  return ErrorCode;

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	if (BytesProcessed != NULL)
	{
		Length -= *BytesProcessed;
		TEMPLATE_BUFFER_MOVE(DataStream, *BytesProcessed);
	}

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	while (Length)
	{
		if (!(Endpoint_IsReadWriteAllowed()))
		{
			TEMPLATE_CLEAR_ENDPOINT();

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			if (BytesProcessed != NULL)
			{
				*BytesProcessed += BytesInTransfer;
				return ENDPOINT_RWSTREAM_IncompleteTransfer;
			}
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			#if !defined(INTERRUPT_CONTROL_ENDPOINT)
			USB_USBTask();
			#endif

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			if ((ErrorCode = Endpoint_WaitUntilReady()))
			  return ErrorCode;
		}
		else
		{
			TEMPLATE_TRANSFER_BYTE(DataStream);
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			TEMPLATE_BUFFER_MOVE(DataStream, 1);
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			Length--;
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			BytesInTransfer++;
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		}
	}

	return ENDPOINT_RWSTREAM_NoError;
}

#undef TEMPLATE_FUNC_NAME
#undef TEMPLATE_BUFFER_TYPE
#undef TEMPLATE_TRANSFER_BYTE
#undef TEMPLATE_CLEAR_ENDPOINT
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#undef TEMPLATE_BUFFER_OFFSET
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#undef TEMPLATE_BUFFER_MOVE