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/*
LUFA Library
Copyright (C) Dean Camera, 2009.
dean [at] fourwalledcubicle [dot] com
www.fourwalledcubicle.com
*/
/*
Copyright 2009 Dean Camera (dean [at] fourwalledcubicle [dot] com)
Permission to use, copy, modify, and distribute this software
and its documentation for any purpose and without fee is hereby
granted, provided that the above copyright notice appear in all
copies and that both that the copyright notice and this
permission notice and warranty disclaimer appear in supporting
documentation, and that the name of the author not be used in
advertising or publicity pertaining to distribution of the
software without specific, written prior permission.
The author disclaim all warranties with regard to this
software, including all implied warranties of merchantability
and fitness. In no event shall the author be liable for any
special, indirect or consequential damages or any damages
whatsoever resulting from loss of use, data or profits, whether
in an action of contract, negligence or other tortious action,
arising out of or in connection with the use or performance of
this software.
*/
#include "../HighLevel/USBMode.h"
#if defined(USB_CAN_BE_DEVICE)
#define INCLUDE_FROM_ENDPOINT_C
#include "Endpoint.h"
#if !defined(FIXED_CONTROL_ENDPOINT_SIZE)
uint8_t USB_ControlEndpointSize = ENDPOINT_CONTROLEP_DEFAULT_SIZE;
#endif
uint8_t Endpoint_BytesToEPSizeMaskDynamic(const uint16_t Size)
{
return Endpoint_BytesToEPSizeMask(Size);
}
bool Endpoint_ConfigureEndpoint_Prv(const uint8_t Number, const uint8_t UECFG0XData, const uint8_t UECFG1XData)
{
Endpoint_SelectEndpoint(Number);
Endpoint_EnableEndpoint();
UECFG1X = 0;
UECFG0X = UECFG0XData;
UECFG1X = UECFG1XData;
return Endpoint_IsConfigured();
}
void Endpoint_ClearEndpoints(void)
{
UEINT = 0;
for (uint8_t EPNum = 0; EPNum < ENDPOINT_TOTAL_ENDPOINTS; EPNum++)
{
Endpoint_SelectEndpoint(EPNum);
UEIENX = 0;
UEINTX = 0;
Endpoint_DeallocateMemory();
Endpoint_DisableEndpoint();
}
}
#if !defined(CONTROL_ONLY_DEVICE)
uint8_t Endpoint_WaitUntilReady(void)
{
uint16_t TimeoutMSRem = USB_STREAM_TIMEOUT_MS;
USB_INT_Clear(USB_INT_SOFI);
for (;;)
{
if (Endpoint_GetEndpointDirection() == ENDPOINT_DIR_IN)
{
if (Endpoint_IsINReady())
return ENDPOINT_READYWAIT_NoError;
}
else
{
if (Endpoint_IsOUTReceived())
return ENDPOINT_READYWAIT_NoError;
}
if (!(USB_IsConnected))
return ENDPOINT_READYWAIT_DeviceDisconnected;
else if (Endpoint_IsStalled())
return ENDPOINT_READYWAIT_EndpointStalled;
if (USB_INT_HasOccurred(USB_INT_SOFI))
{
USB_INT_Clear(USB_INT_SOFI);
if (!(TimeoutMSRem--))
return ENDPOINT_READYWAIT_Timeout;
}
}
}
uint8_t Endpoint_Discard_Stream(uint16_t Length
#if !defined(NO_STREAM_CALLBACKS)
, uint8_t (* const Callback)(void)
#endif
)
{
uint8_t ErrorCode;
if ((ErrorCode = Endpoint_WaitUntilReady()))
return ErrorCode;
while (Length--)
{
if (!(Endpoint_IsReadWriteAllowed()))
{
Endpoint_ClearOUT();
#if !defined(NO_STREAM_CALLBACKS)
if ((Callback != NULL) && (Callback() == STREAMCALLBACK_Abort))
return ENDPOINT_RWSTREAM_ERROR_CallbackAborted;
#endif
if ((ErrorCode = Endpoint_WaitUntilReady()))
return ErrorCode;
}
else
{
Endpoint_Discard_Byte();
}
}
return ENDPOINT_RWSTREAM_ERROR_NoError;
}
uint8_t Endpoint_Write_Stream_LE(const void* Buffer, uint16_t Length
#if !defined(NO_STREAM_CALLBACKS)
, uint8_t (* const Callback)(void)
#endif
)
{
uint8_t* DataStream = (uint8_t*)Buffer;
uint8_t ErrorCode;
if ((ErrorCode = Endpoint_WaitUntilReady()))
return ErrorCode;
while (Length--)
{
if (!(Endpoint_IsReadWriteAllowed()))
{
Endpoint_ClearIN();
#if !defined(NO_STREAM_CALLBACKS)
if ((Callback != NULL) && (Callback() == STREAMCALLBACK_Abort))
return ENDPOINT_RWSTREAM_ERROR_CallbackAborted;
#endif
if ((ErrorCode = Endpoint_WaitUntilReady()))
return ErrorCode;
}
else
{
Endpoint_Write_Byte(*(DataStream++));
}
}
return ENDPOINT_RWSTREAM_ERROR_NoError;
}
uint8_t Endpoint_Write_Stream_BE(const void* Buffer, uint16_t Length
#if !defined(NO_STREAM_CALLBACKS)
, uint8_t (* const Callback)(void)
#endif
)
{
uint8_t* DataStream = (uint8_t*)(Buffer + Length - 1);
uint8_t ErrorCode;
if ((ErrorCode = Endpoint_WaitUntilReady()))
return ErrorCode;
while (Length--)
{
if (!(Endpoint_IsReadWriteAllowed()))
{
Endpoint_ClearIN();
#if !defined(NO_STREAM_CALLBACKS)
if ((Callback != NULL) && (Callback() == STREAMCALLBACK_Abort))
return ENDPOINT_RWSTREAM_ERROR_CallbackAborted;
#endif
if ((ErrorCode = Endpoint_WaitUntilReady()))
return ErrorCode;
}
else
{
Endpoint_Write_Byte(*(DataStream--));
}
}
return ENDPOINT_RWSTREAM_ERROR_NoError;
}
uint8_t Endpoint_Read_Stream_LE(void* Buffer, uint16_t Length
#if !defined(NO_STREAM_CALLBACKS)
, uint8_t (* const Callback)(void)
#endif
)
{
uint8_t* DataStream = (uint8_t*)Buffer;
uint8_t ErrorCode;
if ((ErrorCode = Endpoint_WaitUntilReady()))
return ErrorCode;
while (Length--)
{
if (!(Endpoint_IsReadWriteAllowed()))
{
Endpoint_ClearOUT();
#if !defined(NO_STREAM_CALLBACKS)
if ((Callback != NULL) && (Callback() == STREAMCALLBACK_Abort))
return ENDPOINT_RWSTREAM_ERROR_CallbackAborted;
#endif
if ((ErrorCode = Endpoint_WaitUntilReady()))
return ErrorCode;
}
else
{
*(DataStream++) = Endpoint_Read_Byte();
}
}
return ENDPOINT_RWSTREAM_ERROR_NoError;
}
uint8_t Endpoint_Read_Stream_BE(void* Buffer, uint16_t Length
#if !defined(NO_STREAM_CALLBACKS)
, uint8_t (* const Callback)(void)
#endif
)
{
uint8_t* DataStream = (uint8_t*)(Buffer + Length - 1);
uint8_t ErrorCode;
if ((ErrorCode = Endpoint_WaitUntilReady()))
return ErrorCode;
while (Length--)
{
if (!(Endpoint_IsReadWriteAllowed()))
{
Endpoint_ClearOUT();
#if !defined(NO_STREAM_CALLBACKS)
if ((Callback != NULL) && (Callback() == STREAMCALLBACK_Abort))
return ENDPOINT_RWSTREAM_ERROR_CallbackAborted;
#endif
if ((ErrorCode = Endpoint_WaitUntilReady()))
return ErrorCode;
}
else
{
*(DataStream--) = Endpoint_Read_Byte();
}
}
return ENDPOINT_RWSTREAM_ERROR_NoError;
}
#endif
uint8_t Endpoint_Write_Control_Stream_LE(const void* Buffer, uint16_t Length)
{
uint8_t* DataStream = (uint8_t*)Buffer;
bool LastPacketFull = false;
bool ShortTransfer = (Length < USB_ControlRequest.wLength);
while (Length && !(Endpoint_IsOUTReceived()))
{
while (!(Endpoint_IsINReady()));
while (Length && (Endpoint_BytesInEndpoint() < USB_ControlEndpointSize))
{
Endpoint_Write_Byte(*(DataStream++));
Length--;
}
LastPacketFull = (Endpoint_BytesInEndpoint() == USB_ControlEndpointSize);
Endpoint_ClearIN();
}
if (Endpoint_IsOUTReceived())
return ENDPOINT_RWCSTREAM_ERROR_HostAborted;
if (LastPacketFull || ShortTransfer)
{
while (!(Endpoint_IsINReady()));
Endpoint_ClearIN();
}
while (!(Endpoint_IsOUTReceived()));
return ENDPOINT_RWCSTREAM_ERROR_NoError;
}
uint8_t Endpoint_Write_Control_Stream_BE(const void* Buffer, uint16_t Length)
{
uint8_t* DataStream = (uint8_t*)(Buffer + Length - 1);
bool LastPacketFull = false;
bool ShortTransfer = (Length < USB_ControlRequest.wLength);
while (Length && !(Endpoint_IsOUTReceived()))
{
while (!(Endpoint_IsINReady()));
while (Length && (Endpoint_BytesInEndpoint() < USB_ControlEndpointSize))
{
Endpoint_Write_Byte(*(DataStream--));
Length--;
}
LastPacketFull = (Endpoint_BytesInEndpoint() == USB_ControlEndpointSize);
Endpoint_ClearIN();
}
if (Endpoint_IsOUTReceived())
return ENDPOINT_RWCSTREAM_ERROR_HostAborted;
if (LastPacketFull || ShortTransfer)
{
while (!(Endpoint_IsINReady()));
Endpoint_ClearIN();
}
while (!(Endpoint_IsOUTReceived()));
return ENDPOINT_RWCSTREAM_ERROR_NoError;
}
uint8_t Endpoint_Read_Control_Stream_LE(void* Buffer, uint16_t Length)
{
uint8_t* DataStream = (uint8_t*)Buffer;
while (Length)
{
while (!(Endpoint_IsOUTReceived()));
while (Length && Endpoint_BytesInEndpoint())
{
*(DataStream++) = Endpoint_Read_Byte();
Length--;
}
Endpoint_ClearOUT();
}
while (!(Endpoint_IsINReady()));
return ENDPOINT_RWCSTREAM_ERROR_NoError;
}
uint8_t Endpoint_Read_Control_Stream_BE(void* Buffer, uint16_t Length)
{
uint8_t* DataStream = (uint8_t*)(Buffer + Length - 1);
while (Length)
{
while (!(Endpoint_IsOUTReceived()));
while (Length && Endpoint_BytesInEndpoint())
{
*(DataStream--) = Endpoint_Read_Byte();
Length--;
}
Endpoint_ClearOUT();
}
while (!(Endpoint_IsINReady()));
return ENDPOINT_RWCSTREAM_ERROR_NoError;
}
#endif
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