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410 lines
9.5 KiB
410 lines
9.5 KiB
/*
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LUFA Library
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Copyright (C) Dean Camera, 2009.
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dean [at] fourwalledcubicle [dot] com
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www.fourwalledcubicle.com
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*/
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/*
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Copyright 2009 Dean Camera (dean [at] fourwalledcubicle [dot] com)
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Permission to use, copy, modify, and distribute this software
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and its documentation for any purpose and without fee is hereby
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granted, provided that the above copyright notice appear in all
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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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#include "../HighLevel/USBMode.h"
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#if defined(USB_CAN_BE_DEVICE)
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#define INCLUDE_FROM_ENDPOINT_C
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#include "Endpoint.h"
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#if !defined(FIXED_CONTROL_ENDPOINT_SIZE)
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uint8_t USB_ControlEndpointSize = ENDPOINT_CONTROLEP_DEFAULT_SIZE;
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#endif
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#if !defined(STATIC_ENDPOINT_CONFIGURATION)
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bool Endpoint_ConfigureEndpoint(const uint8_t Number, const uint8_t Type, const uint8_t Direction,
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const uint16_t Size, const uint8_t Banks)
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{
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Endpoint_SelectEndpoint(Number);
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Endpoint_EnableEndpoint();
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UECFG1X = 0;
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UECFG0X = ((Type << EPTYPE0) | Direction);
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UECFG1X = ((1 << ALLOC) | Banks | Endpoint_BytesToEPSizeMask(Size));
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return Endpoint_IsConfigured();
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}
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#else
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bool Endpoint_ConfigureEndpointStatic(const uint8_t Number, const uint8_t UECFG0XData, const uint8_t UECFG1XData)
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{
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Endpoint_SelectEndpoint(Number);
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Endpoint_EnableEndpoint();
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UECFG1X = 0;
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UECFG0X = UECFG0XData;
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UECFG1X = UECFG1XData;
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return Endpoint_IsConfigured();
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}
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#endif
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void Endpoint_ClearEndpoints(void)
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{
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UEINT = 0;
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for (uint8_t EPNum = 0; EPNum < ENDPOINT_TOTAL_ENDPOINTS; EPNum++)
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{
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Endpoint_SelectEndpoint(EPNum);
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UEIENX = 0;
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UEINTX = 0;
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Endpoint_DeallocateMemory();
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Endpoint_DisableEndpoint();
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}
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}
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uint8_t Endpoint_WaitUntilReady(void)
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{
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uint16_t TimeoutMSRem = USB_STREAM_TIMEOUT_MS;
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USB_INT_Clear(USB_INT_SOFI);
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for (;;)
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{
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if (Endpoint_GetEndpointDirection() == ENDPOINT_DIR_IN)
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{
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if (Endpoint_IsINReady())
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return ENDPOINT_READYWAIT_NoError;
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}
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else
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{
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if (Endpoint_IsOUTReceived())
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return ENDPOINT_READYWAIT_NoError;
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}
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if (!(USB_IsConnected))
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return ENDPOINT_READYWAIT_DeviceDisconnected;
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else if (Endpoint_IsStalled())
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return ENDPOINT_READYWAIT_EndpointStalled;
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if (USB_INT_HasOccurred(USB_INT_SOFI))
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{
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USB_INT_Clear(USB_INT_SOFI);
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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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uint8_t Endpoint_Discard_Stream(uint16_t Length
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#if !defined(NO_STREAM_CALLBACKS)
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, uint8_t (* const Callback)(void)
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#endif
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)
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{
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uint8_t ErrorCode;
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if ((ErrorCode = Endpoint_WaitUntilReady()))
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return ErrorCode;
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while (Length--)
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{
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if (!(Endpoint_IsReadWriteAllowed()))
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{
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Endpoint_ClearOUT();
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#if !defined(NO_STREAM_CALLBACKS)
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if ((Callback != NULL) && (Callback() == STREAMCALLBACK_Abort))
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return ENDPOINT_RWSTREAM_ERROR_CallbackAborted;
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#endif
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if ((ErrorCode = Endpoint_WaitUntilReady()))
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return ErrorCode;
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}
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else
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{
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Endpoint_Discard_Byte();
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}
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}
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return ENDPOINT_RWSTREAM_ERROR_NoError;
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}
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uint8_t Endpoint_Write_Stream_LE(const void* Buffer, uint16_t Length
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#if !defined(NO_STREAM_CALLBACKS)
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, uint8_t (* const Callback)(void)
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#endif
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)
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{
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uint8_t* DataStream = (uint8_t*)Buffer;
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uint8_t ErrorCode;
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if ((ErrorCode = Endpoint_WaitUntilReady()))
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return ErrorCode;
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while (Length--)
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{
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if (!(Endpoint_IsReadWriteAllowed()))
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{
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Endpoint_ClearIN();
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#if !defined(NO_STREAM_CALLBACKS)
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if ((Callback != NULL) && (Callback() == STREAMCALLBACK_Abort))
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return ENDPOINT_RWSTREAM_ERROR_CallbackAborted;
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#endif
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if ((ErrorCode = Endpoint_WaitUntilReady()))
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return ErrorCode;
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}
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else
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{
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Endpoint_Write_Byte(*(DataStream++));
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}
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}
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return ENDPOINT_RWSTREAM_ERROR_NoError;
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}
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uint8_t Endpoint_Write_Stream_BE(const void* Buffer, uint16_t Length
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#if !defined(NO_STREAM_CALLBACKS)
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, uint8_t (* const Callback)(void)
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#endif
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)
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{
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uint8_t* DataStream = (uint8_t*)(Buffer + Length - 1);
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uint8_t ErrorCode;
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if ((ErrorCode = Endpoint_WaitUntilReady()))
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return ErrorCode;
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while (Length--)
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{
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if (!(Endpoint_IsReadWriteAllowed()))
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{
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Endpoint_ClearIN();
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#if !defined(NO_STREAM_CALLBACKS)
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if ((Callback != NULL) && (Callback() == STREAMCALLBACK_Abort))
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return ENDPOINT_RWSTREAM_ERROR_CallbackAborted;
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#endif
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if ((ErrorCode = Endpoint_WaitUntilReady()))
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return ErrorCode;
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}
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else
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{
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Endpoint_Write_Byte(*(DataStream--));
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}
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}
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return ENDPOINT_RWSTREAM_ERROR_NoError;
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}
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uint8_t Endpoint_Read_Stream_LE(void* Buffer, uint16_t Length
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#if !defined(NO_STREAM_CALLBACKS)
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, uint8_t (* const Callback)(void)
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#endif
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)
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{
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uint8_t* DataStream = (uint8_t*)Buffer;
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uint8_t ErrorCode;
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if ((ErrorCode = Endpoint_WaitUntilReady()))
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return ErrorCode;
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while (Length--)
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{
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if (!(Endpoint_IsReadWriteAllowed()))
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{
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Endpoint_ClearOUT();
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#if !defined(NO_STREAM_CALLBACKS)
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if ((Callback != NULL) && (Callback() == STREAMCALLBACK_Abort))
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return ENDPOINT_RWSTREAM_ERROR_CallbackAborted;
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#endif
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if ((ErrorCode = Endpoint_WaitUntilReady()))
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return ErrorCode;
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}
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else
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{
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*(DataStream++) = Endpoint_Read_Byte();
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}
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}
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return ENDPOINT_RWSTREAM_ERROR_NoError;
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}
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uint8_t Endpoint_Read_Stream_BE(void* Buffer, uint16_t Length
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#if !defined(NO_STREAM_CALLBACKS)
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, uint8_t (* const Callback)(void)
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#endif
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)
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{
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uint8_t* DataStream = (uint8_t*)(Buffer + Length - 1);
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uint8_t ErrorCode;
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if ((ErrorCode = Endpoint_WaitUntilReady()))
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return ErrorCode;
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while (Length--)
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{
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if (!(Endpoint_IsReadWriteAllowed()))
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{
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Endpoint_ClearOUT();
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#if !defined(NO_STREAM_CALLBACKS)
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if ((Callback != NULL) && (Callback() == STREAMCALLBACK_Abort))
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return ENDPOINT_RWSTREAM_ERROR_CallbackAborted;
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#endif
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if ((ErrorCode = Endpoint_WaitUntilReady()))
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return ErrorCode;
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}
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else
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{
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*(DataStream--) = Endpoint_Read_Byte();
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}
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}
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return ENDPOINT_RWSTREAM_ERROR_NoError;
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}
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uint8_t Endpoint_Write_Control_Stream_LE(const void* Buffer, uint16_t Length)
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{
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uint8_t* DataStream = (uint8_t*)Buffer;
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bool LastPacketFull = false;
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bool ShortTransfer = (Length < USB_ControlRequest.wLength);
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while (Length && !(Endpoint_IsOUTReceived()))
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{
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while (!(Endpoint_IsINReady()));
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while (Length && (Endpoint_BytesInEndpoint() < USB_ControlEndpointSize))
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{
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Endpoint_Write_Byte(*(DataStream++));
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Length--;
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}
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LastPacketFull = (Endpoint_BytesInEndpoint() == USB_ControlEndpointSize);
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Endpoint_ClearIN();
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}
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if (Endpoint_IsOUTReceived())
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return ENDPOINT_RWCSTREAM_ERROR_HostAborted;
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if (LastPacketFull || ShortTransfer)
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{
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while (!(Endpoint_IsINReady()));
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Endpoint_ClearIN();
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}
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while (!(Endpoint_IsOUTReceived()));
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return ENDPOINT_RWCSTREAM_ERROR_NoError;
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}
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uint8_t Endpoint_Write_Control_Stream_BE(const void* Buffer, uint16_t Length)
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{
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uint8_t* DataStream = (uint8_t*)(Buffer + Length - 1);
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bool LastPacketFull = false;
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bool ShortTransfer = (Length < USB_ControlRequest.wLength);
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while (Length && !(Endpoint_IsOUTReceived()))
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{
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while (!(Endpoint_IsINReady()));
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while (Length && (Endpoint_BytesInEndpoint() < USB_ControlEndpointSize))
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{
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Endpoint_Write_Byte(*(DataStream--));
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Length--;
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}
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LastPacketFull = (Endpoint_BytesInEndpoint() == USB_ControlEndpointSize);
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Endpoint_ClearIN();
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}
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if (Endpoint_IsOUTReceived())
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return ENDPOINT_RWCSTREAM_ERROR_HostAborted;
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if (LastPacketFull || ShortTransfer)
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{
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while (!(Endpoint_IsINReady()));
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Endpoint_ClearIN();
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}
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while (!(Endpoint_IsOUTReceived()));
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return ENDPOINT_RWCSTREAM_ERROR_NoError;
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}
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uint8_t Endpoint_Read_Control_Stream_LE(void* Buffer, uint16_t Length)
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{
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uint8_t* DataStream = (uint8_t*)Buffer;
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while (Length)
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{
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while (!(Endpoint_IsOUTReceived()));
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while (Length && Endpoint_BytesInEndpoint())
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{
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*(DataStream++) = Endpoint_Read_Byte();
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Length--;
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}
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Endpoint_ClearOUT();
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}
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while (!(Endpoint_IsINReady()));
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return ENDPOINT_RWCSTREAM_ERROR_NoError;
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}
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uint8_t Endpoint_Read_Control_Stream_BE(void* Buffer, uint16_t Length)
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{
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uint8_t* DataStream = (uint8_t*)(Buffer + Length - 1);
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while (Length)
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{
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while (!(Endpoint_IsOUTReceived()));
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while (Length && Endpoint_BytesInEndpoint())
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{
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*(DataStream--) = Endpoint_Read_Byte();
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Length--;
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}
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Endpoint_ClearOUT();
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}
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while (!(Endpoint_IsINReady()));
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return ENDPOINT_RWCSTREAM_ERROR_NoError;
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}
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#endif
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