/* 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 "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 #if !defined(STATIC_ENDPOINT_CONFIGURATION) bool Endpoint_ConfigureEndpoint(const uint8_t Number, const uint8_t Type, const uint8_t Direction, const uint16_t Size, const uint8_t Banks) { Endpoint_SelectEndpoint(Number); Endpoint_EnableEndpoint(); UECFG1X = 0; UECFG0X = ((Type << EPTYPE0) | Direction); UECFG1X = ((1 << ALLOC) | Banks | Endpoint_BytesToEPSizeMask(Size)); return Endpoint_IsConfigured(); } #else bool Endpoint_ConfigureEndpointStatic(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(); } #endif 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(); } } uint8_t Endpoint_WaitUntilReady(void) { uint8_t TimeoutMSRem = USB_STREAM_TIMEOUT_MS; USB_INT_Clear(USB_INT_SOFI); while (!(Endpoint_ReadWriteAllowed())) { 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; } } return ENDPOINT_READYWAIT_NoError; } 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_ReadWriteAllowed())) { Endpoint_ClearCurrentBank(); #if !defined(NO_STREAM_CALLBACKS) if ((Callback != NULL) && (Callback() == STREAMCALLBACK_Abort)) return ENDPOINT_RWSTREAM_ERROR_CallbackAborted; #endif if ((ErrorCode = Endpoint_WaitUntilReady())) return ErrorCode; } 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_ReadWriteAllowed())) { Endpoint_ClearCurrentBank(); #if !defined(NO_STREAM_CALLBACKS) if ((Callback != NULL) && (Callback() == STREAMCALLBACK_Abort)) return ENDPOINT_RWSTREAM_ERROR_CallbackAborted; #endif if ((ErrorCode = Endpoint_WaitUntilReady())) return ErrorCode; } 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_ReadWriteAllowed())) { Endpoint_ClearCurrentBank(); #if !defined(NO_STREAM_CALLBACKS) if ((Callback != NULL) && (Callback() == STREAMCALLBACK_Abort)) return ENDPOINT_RWSTREAM_ERROR_CallbackAborted; #endif if ((ErrorCode = Endpoint_WaitUntilReady())) return ErrorCode; } 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_ReadWriteAllowed())) { Endpoint_ClearCurrentBank(); #if !defined(NO_STREAM_CALLBACKS) if ((Callback != NULL) && (Callback() == STREAMCALLBACK_Abort)) return ENDPOINT_RWSTREAM_ERROR_CallbackAborted; #endif if ((ErrorCode = Endpoint_WaitUntilReady())) return ErrorCode; } *(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_ReadWriteAllowed())) { Endpoint_ClearCurrentBank(); #if !defined(NO_STREAM_CALLBACKS) if ((Callback != NULL) && (Callback() == STREAMCALLBACK_Abort)) return ENDPOINT_RWSTREAM_ERROR_CallbackAborted; #endif if ((ErrorCode = Endpoint_WaitUntilReady())) return ErrorCode; } *(DataStream--) = Endpoint_Read_Byte(); } return ENDPOINT_RWSTREAM_ERROR_NoError; } uint8_t Endpoint_Write_Control_Stream_LE(const void* Buffer, uint16_t Length) { uint8_t* DataStream = (uint8_t*)Buffer; bool SendZLP = true; while (Length && !(Endpoint_IsSetupOUTReceived())) { while (!(Endpoint_IsSetupINReady())); while (Length && (Endpoint_BytesInEndpoint() < USB_ControlEndpointSize)) { Endpoint_Write_Byte(*(DataStream++)); Length--; } SendZLP = (Endpoint_BytesInEndpoint() == USB_ControlEndpointSize); Endpoint_ClearSetupIN(); } if (Endpoint_IsSetupOUTReceived()) return ENDPOINT_RWCSTREAM_ERROR_HostAborted; if (SendZLP) { while (!(Endpoint_IsSetupINReady())); Endpoint_ClearSetupIN(); } while (!(Endpoint_IsSetupOUTReceived())); 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 SendZLP = true; while (Length && !(Endpoint_IsSetupOUTReceived())) { while (!(Endpoint_IsSetupINReady())); while (Length && (Endpoint_BytesInEndpoint() < USB_ControlEndpointSize)) { Endpoint_Write_Byte(*(DataStream--)); Length--; } SendZLP = (Endpoint_BytesInEndpoint() == USB_ControlEndpointSize); Endpoint_ClearSetupIN(); } if (Endpoint_IsSetupOUTReceived()) return ENDPOINT_RWCSTREAM_ERROR_HostAborted; if (SendZLP) { while (!(Endpoint_IsSetupINReady())); Endpoint_ClearSetupIN(); } while (!(Endpoint_IsSetupOUTReceived())); 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_IsSetupOUTReceived())); while (Length && Endpoint_BytesInEndpoint()) { *(DataStream++) = Endpoint_Read_Byte(); Length--; } Endpoint_ClearSetupOUT(); } while (!(Endpoint_IsSetupINReady())); 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_IsSetupOUTReceived())); while (Length && Endpoint_BytesInEndpoint()) { *(DataStream--) = Endpoint_Read_Byte(); Length--; } Endpoint_ClearSetupOUT(); } while (!(Endpoint_IsSetupINReady())); return ENDPOINT_RWCSTREAM_ERROR_NoError; } #endif