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root / LUFA / Drivers / USB / Core / XMEGA / Endpoint_XMEGA.c @ 978b99e5

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/*
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             LUFA Library
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     Copyright (C) Dean Camera, 2011.
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  dean [at] fourwalledcubicle [dot] com
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           www.lufa-lib.org
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*/
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/*
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  Copyright 2011  Dean Camera (dean [at] fourwalledcubicle [dot] com)
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  Permission to use, copy, modify, distribute, and sell this
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  software and its documentation for any purpose is hereby granted
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  without fee, provided that the above copyright notice appear in
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  all copies and that both that the copyright notice and this
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  permission notice and warranty disclaimer appear in supporting
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  documentation, and that the name of the author not be used in
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  advertising or publicity pertaining to distribution of the
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  software without specific, written prior permission.
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  The author disclaim all warranties with regard to this
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  software, including all implied warranties of merchantability
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  and fitness.  In no event shall the author be liable for any
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  special, indirect or consequential damages or any damages
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  whatsoever resulting from loss of use, data or profits, whether
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  in an action of contract, negligence or other tortious action,
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  arising out of or in connection with the use or performance of
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  this software.
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*/
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#define  __INCLUDE_FROM_USB_DRIVER
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#include "../USBMode.h"
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#if defined(USB_CAN_BE_DEVICE)
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#include "../Endpoint.h"
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#if !defined(FIXED_CONTROL_ENDPOINT_SIZE)
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uint8_t USB_Device_ControlEndpointSize = ENDPOINT_CONTROLEP_DEFAULT_SIZE;
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#endif
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volatile uint8_t   Endpoint_SelectedEndpoint;
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volatile USB_EP_t* Endpoint_SelectedEndpointHandle;
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void Endpoint_ClearEndpoints(void)
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{
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        for (uint8_t EPNum = 0; EPNum < (ENDPOINT_TOTAL_ENDPOINTS * 2); EPNum++)
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          ((USB_EP_t*)&USB_EndpointTable)[EPNum].CTRL = 0;
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}
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void Endpoint_ClearStatusStage(void)
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{
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        while (!(Endpoint_IsOUTReceived()))
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        {
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                if (USB_DeviceState == DEVICE_STATE_Unattached)
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                  return;
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        }
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        Endpoint_ClearOUT();
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}
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#if !defined(CONTROL_ONLY_DEVICE)
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uint8_t Endpoint_WaitUntilReady(void)
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{
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        #if (USB_STREAM_TIMEOUT_MS < 0xFF)
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        uint8_t  TimeoutMSRem = USB_STREAM_TIMEOUT_MS;
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        #else
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        uint16_t TimeoutMSRem = USB_STREAM_TIMEOUT_MS;
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        #endif
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        uint16_t PreviousFrameNumber = USB_Device_GetFrameNumber();
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        for (;;)
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        {
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                if (Endpoint_IsOUTReceived())
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                  return ENDPOINT_READYWAIT_NoError;
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                uint8_t USB_DeviceState_LCL = USB_DeviceState;
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                if (USB_DeviceState_LCL == DEVICE_STATE_Unattached)
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                  return ENDPOINT_READYWAIT_DeviceDisconnected;
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                else if (USB_DeviceState_LCL == DEVICE_STATE_Suspended)
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                  return ENDPOINT_READYWAIT_BusSuspended;
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                else if (Endpoint_IsStalled())
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                  return ENDPOINT_READYWAIT_EndpointStalled;
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                uint16_t CurrentFrameNumber = USB_Device_GetFrameNumber();
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                if (CurrentFrameNumber != PreviousFrameNumber)
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                {
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                        PreviousFrameNumber = CurrentFrameNumber;
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                        if (!(TimeoutMSRem--))
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                          return ENDPOINT_READYWAIT_Timeout;
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                }
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        }
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}
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#endif
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#endif
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