Template_Endpoint_Control_W.c 1.1 KB
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uint8_t TEMPLATE_FUNC_NAME (void* Buffer, uint16_t Length)
{
	uint8_t* DataStream     = (uint8_t*)(Buffer + TEMPLATE_BUFFER_OFFSET(Length));
	bool     LastPacketFull = false;
	
	if (Length > USB_ControlRequest.wLength)
	  Length = USB_ControlRequest.wLength;
	
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	while (Length || LastPacketFull)
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	{
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		if (Endpoint_IsSETUPReceived())
		  return ENDPOINT_RWCSTREAM_HostAborted;

		if (Endpoint_IsOUTReceived())
		  break;
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		if (USB_DeviceState == DEVICE_STATE_Unattached)
		  return ENDPOINT_RWCSTREAM_DeviceDisconnected;
		  
		if (Endpoint_IsINReady())
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		{
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			while (Length && (Endpoint_BytesInEndpoint() < USB_ControlEndpointSize))
			{
				TEMPLATE_TRANSFER_BYTE(DataStream);
				Length--;
			}
			
			LastPacketFull = (Endpoint_BytesInEndpoint() == USB_ControlEndpointSize);
			Endpoint_ClearIN();
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		}
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	}
	
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	while (!(Endpoint_IsOUTReceived()))
	{
		if (USB_DeviceState == DEVICE_STATE_Unattached)
		  return ENDPOINT_RWCSTREAM_DeviceDisconnected;	
	}
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	return ENDPOINT_RWCSTREAM_NoError;
}

#undef TEMPLATE_BUFFER_OFFSET
#undef TEMPLATE_FUNC_NAME
#undef TEMPLATE_TRANSFER_BYTE