diff options
Diffstat (limited to 'LUFA/Drivers/USB/Core/UC3/EndpointStream_UC3.c')
| -rw-r--r-- | LUFA/Drivers/USB/Core/UC3/EndpointStream_UC3.c | 235 |
1 files changed, 235 insertions, 0 deletions
diff --git a/LUFA/Drivers/USB/Core/UC3/EndpointStream_UC3.c b/LUFA/Drivers/USB/Core/UC3/EndpointStream_UC3.c new file mode 100644 index 0000000000..04f6e97d65 --- /dev/null +++ b/LUFA/Drivers/USB/Core/UC3/EndpointStream_UC3.c @@ -0,0 +1,235 @@ +/* + LUFA Library + Copyright (C) Dean Camera, 2017. + + dean [at] fourwalledcubicle [dot] com + www.lufa-lib.org +*/ + +/* + Copyright 2017 Dean Camera (dean [at] fourwalledcubicle [dot] com) + + Permission to use, copy, modify, distribute, and sell this + software and its documentation for any purpose is hereby granted + without fee, 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 disclaims 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 "../../../../Common/Common.h" +#if (ARCH == ARCH_UC3) + +#define __INCLUDE_FROM_USB_DRIVER +#include "../USBMode.h" + +#if defined(USB_CAN_BE_DEVICE) + +#include "EndpointStream_UC3.h" + +#if !defined(CONTROL_ONLY_DEVICE) +uint8_t Endpoint_Discard_Stream(uint16_t Length, + uint16_t* const BytesProcessed) +{ + uint8_t ErrorCode; + uint16_t BytesInTransfer = 0; + + if ((ErrorCode = Endpoint_WaitUntilReady())) + return ErrorCode; + + if (BytesProcessed != NULL) + Length -= *BytesProcessed; + + while (Length) + { + if (!(Endpoint_IsReadWriteAllowed())) + { + Endpoint_ClearOUT(); + + if (BytesProcessed != NULL) + { + *BytesProcessed += BytesInTransfer; + return ENDPOINT_RWSTREAM_IncompleteTransfer; + } + + if ((ErrorCode = Endpoint_WaitUntilReady())) + return ErrorCode; + } + else + { + Endpoint_Discard_8(); + + Length--; + BytesInTransfer++; + } + } + + return ENDPOINT_RWSTREAM_NoError; +} + +uint8_t Endpoint_Null_Stream(uint16_t Length, + uint16_t* const BytesProcessed) +{ + uint8_t ErrorCode; + uint16_t BytesInTransfer = 0; + + if ((ErrorCode = Endpoint_WaitUntilReady())) + return ErrorCode; + + if (BytesProcessed != NULL) + Length -= *BytesProcessed; + + while (Length) + { + if (!(Endpoint_IsReadWriteAllowed())) + { + Endpoint_ClearIN(); + + if (BytesProcessed != NULL) + { + *BytesProcessed += BytesInTransfer; + return ENDPOINT_RWSTREAM_IncompleteTransfer; + } + + if ((ErrorCode = Endpoint_WaitUntilReady())) + return ErrorCode; + } + else + { + Endpoint_Write_8(0); + + Length--; + BytesInTransfer++; + } + } + + return ENDPOINT_RWSTREAM_NoError; +} + +/* The following abuses the C preprocessor in order to copy-paste common code with slight alterations, + * so that the code needs to be written once. It is a crude form of templating to reduce code maintenance. */ + +#define TEMPLATE_FUNC_NAME Endpoint_Write_Stream_LE +#define TEMPLATE_BUFFER_TYPE const void* +#define TEMPLATE_CLEAR_ENDPOINT() Endpoint_ClearIN() +#define TEMPLATE_BUFFER_OFFSET(Length) 0 +#define TEMPLATE_BUFFER_MOVE(BufferPtr, Amount) BufferPtr += Amount +#define TEMPLATE_TRANSFER_BYTE(BufferPtr) Endpoint_Write_8(*BufferPtr) +#include "Template/Template_Endpoint_RW.c" + +#define TEMPLATE_FUNC_NAME Endpoint_Write_Stream_BE +#define TEMPLATE_BUFFER_TYPE const void* +#define TEMPLATE_CLEAR_ENDPOINT() Endpoint_ClearIN() +#define TEMPLATE_BUFFER_OFFSET(Length) (Length - 1) +#define TEMPLATE_BUFFER_MOVE(BufferPtr, Amount) BufferPtr -= Amount +#define TEMPLATE_TRANSFER_BYTE(BufferPtr) Endpoint_Write_8(*BufferPtr) +#include "Template/Template_Endpoint_RW.c" + +#define TEMPLATE_FUNC_NAME Endpoint_Read_Stream_LE +#define TEMPLATE_BUFFER_TYPE void* +#define TEMPLATE_CLEAR_ENDPOINT() Endpoint_ClearOUT() +#define TEMPLATE_BUFFER_OFFSET(Length) 0 +#define TEMPLATE_BUFFER_MOVE(BufferPtr, Amount) BufferPtr += Amount +#define TEMPLATE_TRANSFER_BYTE(BufferPtr) *BufferPtr = Endpoint_Read_8() +#include "Template/Template_Endpoint_RW.c" + +#define TEMPLATE_FUNC_NAME Endpoint_Read_Stream_BE +#define TEMPLATE_BUFFER_TYPE void* +#define TEMPLATE_CLEAR_ENDPOINT() Endpoint_ClearOUT() +#define TEMPLATE_BUFFER_OFFSET(Length) (Length - 1) +#define TEMPLATE_BUFFER_MOVE(BufferPtr, Amount) BufferPtr -= Amount +#define TEMPLATE_TRANSFER_BYTE(BufferPtr) *BufferPtr = Endpoint_Read_8() +#include "Template/Template_Endpoint_RW.c" + +#if defined(ARCH_HAS_FLASH_ADDRESS_SPACE) + #define TEMPLATE_FUNC_NAME Endpoint_Write_PStream_LE + #define TEMPLATE_BUFFER_TYPE const void* + #define TEMPLATE_CLEAR_ENDPOINT() Endpoint_ClearIN() + #define TEMPLATE_BUFFER_OFFSET(Length) 0 + #define TEMPLATE_BUFFER_MOVE(BufferPtr, Amount) BufferPtr += Amount + #define TEMPLATE_TRANSFER_BYTE(BufferPtr) Endpoint_Write_8(pgm_read_byte(BufferPtr)) + #include "Template/Template_Endpoint_RW.c" + + #define TEMPLATE_FUNC_NAME Endpoint_Write_PStream_BE + #define TEMPLATE_BUFFER_TYPE const void* + #define TEMPLATE_CLEAR_ENDPOINT() Endpoint_ClearIN() + #define TEMPLATE_BUFFER_OFFSET(Length) (Length - 1) + #define TEMPLATE_BUFFER_MOVE(BufferPtr, Amount) BufferPtr -= Amount + #define TEMPLATE_TRANSFER_BYTE(BufferPtr) Endpoint_Write_8(pgm_read_byte(BufferPtr)) + #include "Template/Template_Endpoint_RW.c" +#endif + +#if defined(ARCH_HAS_EEPROM_ADDRESS_SPACE) + #define TEMPLATE_FUNC_NAME Endpoint_Write_EStream_LE + #define TEMPLATE_BUFFER_TYPE const void* + #define TEMPLATE_CLEAR_ENDPOINT() Endpoint_ClearIN() + #define TEMPLATE_BUFFER_OFFSET(Length) 0 + #define TEMPLATE_BUFFER_MOVE(BufferPtr, Amount) BufferPtr += Amount + #define TEMPLATE_TRANSFER_BYTE(BufferPtr) Endpoint_Write_8(eeprom_read_byte(BufferPtr)) + #include "Template/Template_Endpoint_RW.c" + + #define TEMPLATE_FUNC_NAME Endpoint_Write_EStream_BE + #define TEMPLATE_BUFFER_TYPE const void* + #define TEMPLATE_CLEAR_ENDPOINT() Endpoint_ClearIN() + #define TEMPLATE_BUFFER_OFFSET(Length) (Length - 1) + #define TEMPLATE_BUFFER_MOVE(BufferPtr, Amount) BufferPtr -= Amount + #define TEMPLATE_TRANSFER_BYTE(BufferPtr) Endpoint_Write_8(eeprom_read_byte(BufferPtr)) + #include "Template/Template_Endpoint_RW.c" + + #define TEMPLATE_FUNC_NAME Endpoint_Read_EStream_LE + #define TEMPLATE_BUFFER_TYPE void* + #define TEMPLATE_CLEAR_ENDPOINT() Endpoint_ClearOUT() + #define TEMPLATE_BUFFER_OFFSET(Length) 0 + #define TEMPLATE_BUFFER_MOVE(BufferPtr, Amount) BufferPtr += Amount + #define TEMPLATE_TRANSFER_BYTE(BufferPtr) eeprom_update_byte(BufferPtr, Endpoint_Read_8()) + #include "Template/Template_Endpoint_RW.c" + + #define TEMPLATE_FUNC_NAME Endpoint_Read_EStream_BE + #define TEMPLATE_BUFFER_TYPE void* + #define TEMPLATE_CLEAR_ENDPOINT() Endpoint_ClearOUT() + #define TEMPLATE_BUFFER_OFFSET(Length) (Length - 1) + #define TEMPLATE_BUFFER_MOVE(BufferPtr, Amount) BufferPtr -= Amount + #define TEMPLATE_TRANSFER_BYTE(BufferPtr) eeprom_update_byte(BufferPtr, Endpoint_Read_8()) + #include "Template/Template_Endpoint_RW.c" +#endif + +#endif + +#define TEMPLATE_FUNC_NAME Endpoint_Write_Control_Stream_LE +#define TEMPLATE_BUFFER_OFFSET(Length) 0 +#define TEMPLATE_BUFFER_MOVE(BufferPtr, Amount) BufferPtr += Amount +#define TEMPLATE_TRANSFER_BYTE(BufferPtr) Endpoint_Write_8(*BufferPtr) +#include "Template/Template_Endpoint_Control_W.c" + +#define TEMPLATE_FUNC_NAME Endpoint_Write_Control_Stream_BE +#define TEMPLATE_BUFFER_OFFSET(Length) (Length - 1) +#define TEMPLATE_BUFFER_MOVE(BufferPtr, Amount) BufferPtr -= Amount +#define TEMPLATE_TRANSFER_BYTE(BufferPtr) Endpoint_Write_8(*BufferPtr) +#include "Template/Template_Endpoint_Control_W.c" + +#define TEMPLATE_FUNC_NAME Endpoint_Read_Control_Stream_LE +#define TEMPLATE_BUFFER_OFFSET(Length) 0 +#define TEMPLATE_BUFFER_MOVE(BufferPtr, Amount) BufferPtr += Amount +#define TEMPLATE_TRANSFER_BYTE(BufferPtr) *BufferPtr = Endpoint_Read_8() +#include "Template/Template_Endpoint_Control_R.c" + +#define TEMPLATE_FUNC_NAME Endpoint_Read_Control_Stream_BE +#define TEMPLATE_BUFFER_OFFSET(Length) (Length - 1) +#define TEMPLATE_BUFFER_MOVE(BufferPtr, Amount) BufferPtr -= Amount +#define TEMPLATE_TRANSFER_BYTE(BufferPtr) *BufferPtr = Endpoint_Read_8() +#include "Template/Template_Endpoint_Control_R.c" + +#endif + +#endif |