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Diffstat (limited to 'lib/lufa/LUFA/Drivers/USB/Core/UC3/EndpointStream_UC3.h')
| -rw-r--r-- | lib/lufa/LUFA/Drivers/USB/Core/UC3/EndpointStream_UC3.h | 438 |
1 files changed, 438 insertions, 0 deletions
diff --git a/lib/lufa/LUFA/Drivers/USB/Core/UC3/EndpointStream_UC3.h b/lib/lufa/LUFA/Drivers/USB/Core/UC3/EndpointStream_UC3.h new file mode 100644 index 0000000000..8b1c10eb09 --- /dev/null +++ b/lib/lufa/LUFA/Drivers/USB/Core/UC3/EndpointStream_UC3.h @@ -0,0 +1,438 @@ +/* + 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. +*/ + +/** \file + * \brief Endpoint data stream transmission and reception management for the AVR32 UC3 microcontrollers. + * \copydetails Group_EndpointStreamRW_UC3 + * + * \note This file should not be included directly. It is automatically included as needed by the USB driver + * dispatch header located in LUFA/Drivers/USB/USB.h. + */ + +/** \ingroup Group_EndpointStreamRW + * \defgroup Group_EndpointStreamRW_UC3 Read/Write of Multi-Byte Streams (UC3) + * \brief Endpoint data stream transmission and reception management for the Atmel AVR32 UC3 architecture. + * + * Functions, macros, variables, enums and types related to data reading and writing of data streams from + * and to endpoints. + * + * @{ + */ + +#ifndef __ENDPOINT_STREAM_UC3_H__ +#define __ENDPOINT_STREAM_UC3_H__ + + /* Includes: */ + #include "../../../../Common/Common.h" + #include "../USBMode.h" + #include "../USBTask.h" + + /* Enable C linkage for C++ Compilers: */ + #if defined(__cplusplus) + extern "C" { + #endif + + /* Preprocessor Checks: */ + #if !defined(__INCLUDE_FROM_USB_DRIVER) + #error Do not include this file directly. Include LUFA/Drivers/USB/USB.h instead. + #endif + + /* Public Interface - May be used in end-application: */ + /* Function Prototypes: */ + /** \name Stream functions for null data */ + //@{ + + /** Reads and discards the given number of bytes from the currently selected endpoint's bank, + * discarding fully read packets from the host as needed. The last packet is not automatically + * discarded once the remaining bytes has been read; the user is responsible for manually + * discarding the last packet from the host via the \ref Endpoint_ClearOUT() macro. + * + * If the BytesProcessed parameter is \c NULL, the entire stream transfer is attempted at once, + * failing or succeeding as a single unit. If the BytesProcessed parameter points to a valid + * storage location, the transfer will instead be performed as a series of chunks. Each time + * the endpoint bank becomes empty while there is still data to process (and after the current + * packet has been acknowledged) the BytesProcessed location will be updated with the total number + * of bytes processed in the stream, and the function will exit with an error code of + * \ref ENDPOINT_RWSTREAM_IncompleteTransfer. This allows for any abort checking to be performed + * in the user code - to continue the transfer, call the function again with identical parameters + * and it will resume until the BytesProcessed value reaches the total transfer length. + * + * <b>Single Stream Transfer Example:</b> + * \code + * uint8_t ErrorCode; + * + * if ((ErrorCode = Endpoint_Discard_Stream(512, NULL)) != ENDPOINT_RWSTREAM_NoError) + * { + * // Stream failed to complete - check ErrorCode here + * } + * \endcode + * + * <b>Partial Stream Transfers Example:</b> + * \code + * uint8_t ErrorCode; + * uint16_t BytesProcessed; + * + * BytesProcessed = 0; + * while ((ErrorCode = Endpoint_Discard_Stream(512, &BytesProcessed)) == ENDPOINT_RWSTREAM_IncompleteTransfer) + * { + * // Stream not yet complete - do other actions here, abort if required + * } + * + * if (ErrorCode != ENDPOINT_RWSTREAM_NoError) + * { + * // Stream failed to complete - check ErrorCode here + * } + * \endcode + * + * \note This routine should not be used on CONTROL type endpoints. + * + * \param[in] Length Number of bytes to discard via the currently selected endpoint. + * \param[in] BytesProcessed Pointer to a location where the total number of bytes processed in the current + * transaction should be updated, \c NULL if the entire stream should be read at once. + * + * \return A value from the \ref Endpoint_Stream_RW_ErrorCodes_t enum. + */ + uint8_t Endpoint_Discard_Stream(uint16_t Length, + uint16_t* const BytesProcessed); + + /** Writes a given number of zeroed bytes to the currently selected endpoint's bank, sending + * full packets to the host as needed. The last packet is not automatically sent once the + * remaining bytes have been written; the user is responsible for manually sending the last + * packet to the host via the \ref Endpoint_ClearIN() macro. + * + * If the BytesProcessed parameter is \c NULL, the entire stream transfer is attempted at once, + * failing or succeeding as a single unit. If the BytesProcessed parameter points to a valid + * storage location, the transfer will instead be performed as a series of chunks. Each time + * the endpoint bank becomes full while there is still data to process (and after the current + * packet transmission has been initiated) the BytesProcessed location will be updated with the + * total number of bytes processed in the stream, and the function will exit with an error code of + * \ref ENDPOINT_RWSTREAM_IncompleteTransfer. This allows for any abort checking to be performed + * in the user code - to continue the transfer, call the function again with identical parameters + * and it will resume until the BytesProcessed value reaches the total transfer length. + * + * <b>Single Stream Transfer Example:</b> + * \code + * uint8_t ErrorCode; + * + * if ((ErrorCode = Endpoint_Null_Stream(512, NULL)) != ENDPOINT_RWSTREAM_NoError) + * { + * // Stream failed to complete - check ErrorCode here + * } + * \endcode + * + * <b>Partial Stream Transfers Example:</b> + * \code + * uint8_t ErrorCode; + * uint16_t BytesProcessed; + * + * BytesProcessed = 0; + * while ((ErrorCode = Endpoint_Null_Stream(512, &BytesProcessed)) == ENDPOINT_RWSTREAM_IncompleteTransfer) + * { + * // Stream not yet complete - do other actions here, abort if required + * } + * + * if (ErrorCode != ENDPOINT_RWSTREAM_NoError) + * { + * // Stream failed to complete - check ErrorCode here + * } + * \endcode + * + * \note This routine should not be used on CONTROL type endpoints. + * + * \param[in] Length Number of zero bytes to send via the currently selected endpoint. + * \param[in] BytesProcessed Pointer to a location where the total number of bytes processed in the current + * transaction should be updated, \c NULL if the entire stream should be read at once. + * + * \return A value from the \ref Endpoint_Stream_RW_ErrorCodes_t enum. + */ + uint8_t Endpoint_Null_Stream(uint16_t Length, + uint16_t* const BytesProcessed); + + //@} + + /** \name Stream functions for RAM source/destination data */ + //@{ + + /** Writes the given number of bytes to the endpoint from the given buffer in little endian, + * sending full packets to the host as needed. The last packet filled is not automatically sent; + * the user is responsible for manually sending the last written packet to the host via the + * \ref Endpoint_ClearIN() macro. + * + * If the BytesProcessed parameter is \c NULL, the entire stream transfer is attempted at once, + * failing or succeeding as a single unit. If the BytesProcessed parameter points to a valid + * storage location, the transfer will instead be performed as a series of chunks. Each time + * the endpoint bank becomes full while there is still data to process (and after the current + * packet transmission has been initiated) the BytesProcessed location will be updated with the + * total number of bytes processed in the stream, and the function will exit with an error code of + * \ref ENDPOINT_RWSTREAM_IncompleteTransfer. This allows for any abort checking to be performed + * in the user code - to continue the transfer, call the function again with identical parameters + * and it will resume until the BytesProcessed value reaches the total transfer length. + * + * <b>Single Stream Transfer Example:</b> + * \code + * uint8_t DataStream[512]; + * uint8_t ErrorCode; + * + * if ((ErrorCode = Endpoint_Write_Stream_LE(DataStream, sizeof(DataStream), + * NULL)) != ENDPOINT_RWSTREAM_NoError) + * { + * // Stream failed to complete - check ErrorCode here + * } + * \endcode + * + * <b>Partial Stream Transfers Example:</b> + * \code + * uint8_t DataStream[512]; + * uint8_t ErrorCode; + * uint16_t BytesProcessed; + * + * BytesProcessed = 0; + * while ((ErrorCode = Endpoint_Write_Stream_LE(DataStream, sizeof(DataStream), + * &BytesProcessed)) == ENDPOINT_RWSTREAM_IncompleteTransfer) + * { + * // Stream not yet complete - do other actions here, abort if required + * } + * + * if (ErrorCode != ENDPOINT_RWSTREAM_NoError) + * { + * // Stream failed to complete - check ErrorCode here + * } + * \endcode + * + * \note This routine should not be used on CONTROL type endpoints. + * + * \param[in] Buffer Pointer to the source data buffer to read from. + * \param[in] Length Number of bytes to read for the currently selected endpoint into the buffer. + * \param[in] BytesProcessed Pointer to a location where the total number of bytes processed in the current + * transaction should be updated, \c NULL if the entire stream should be written at once. + * + * \return A value from the \ref Endpoint_Stream_RW_ErrorCodes_t enum. + */ + uint8_t Endpoint_Write_Stream_LE(const void* const Buffer, + uint16_t Length, + uint16_t* const BytesProcessed) ATTR_NON_NULL_PTR_ARG(1); + + /** Writes the given number of bytes to the endpoint from the given buffer in big endian, + * sending full packets to the host as needed. The last packet filled is not automatically sent; + * the user is responsible for manually sending the last written packet to the host via the + * \ref Endpoint_ClearIN() macro. + * + * \note This routine should not be used on CONTROL type endpoints. + * + * \param[in] Buffer Pointer to the source data buffer to read from. + * \param[in] Length Number of bytes to read for the currently selected endpoint into the buffer. + * \param[in] BytesProcessed Pointer to a location where the total number of bytes processed in the current + * transaction should be updated, \c NULL if the entire stream should be written at once. + * + * \return A value from the \ref Endpoint_Stream_RW_ErrorCodes_t enum. + */ + uint8_t Endpoint_Write_Stream_BE(const void* const Buffer, + uint16_t Length, + uint16_t* const BytesProcessed) ATTR_NON_NULL_PTR_ARG(1); + + /** Reads the given number of bytes from the endpoint from the given buffer in little endian, + * discarding fully read packets from the host as needed. The last packet is not automatically + * discarded once the remaining bytes has been read; the user is responsible for manually + * discarding the last packet from the host via the \ref Endpoint_ClearOUT() macro. + * + * If the BytesProcessed parameter is \c NULL, the entire stream transfer is attempted at once, + * failing or succeeding as a single unit. If the BytesProcessed parameter points to a valid + * storage location, the transfer will instead be performed as a series of chunks. Each time + * the endpoint bank becomes empty while there is still data to process (and after the current + * packet has been acknowledged) the BytesProcessed location will be updated with the total number + * of bytes processed in the stream, and the function will exit with an error code of + * \ref ENDPOINT_RWSTREAM_IncompleteTransfer. This allows for any abort checking to be performed + * in the user code - to continue the transfer, call the function again with identical parameters + * and it will resume until the BytesProcessed value reaches the total transfer length. + * + * <b>Single Stream Transfer Example:</b> + * \code + * uint8_t DataStream[512]; + * uint8_t ErrorCode; + * + * if ((ErrorCode = Endpoint_Read_Stream_LE(DataStream, sizeof(DataStream), + * NULL)) != ENDPOINT_RWSTREAM_NoError) + * { + * // Stream failed to complete - check ErrorCode here + * } + * \endcode + * + * <b>Partial Stream Transfers Example:</b> + * \code + * uint8_t DataStream[512]; + * uint8_t ErrorCode; + * uint16_t BytesProcessed; + * + * BytesProcessed = 0; + * while ((ErrorCode = Endpoint_Read_Stream_LE(DataStream, sizeof(DataStream), + * &BytesProcessed)) == ENDPOINT_RWSTREAM_IncompleteTransfer) + * { + * // Stream not yet complete - do other actions here, abort if required + * } + * + * if (ErrorCode != ENDPOINT_RWSTREAM_NoError) + * { + * // Stream failed to complete - check ErrorCode here + * } + * \endcode + * + * \note This routine should not be used on CONTROL type endpoints. + * + * \param[out] Buffer Pointer to the destination data buffer to write to. + * \param[in] Length Number of bytes to send via the currently selected endpoint. + * \param[in] BytesProcessed Pointer to a location where the total number of bytes processed in the current + * transaction should be updated, \c NULL if the entire stream should be read at once. + * + * \return A value from the \ref Endpoint_Stream_RW_ErrorCodes_t enum. + */ + uint8_t Endpoint_Read_Stream_LE(void* const Buffer, + uint16_t Length, + uint16_t* const BytesProcessed) ATTR_NON_NULL_PTR_ARG(1); + + /** Reads the given number of bytes from the endpoint from the given buffer in big endian, + * discarding fully read packets from the host as needed. The last packet is not automatically + * discarded once the remaining bytes has been read; the user is responsible for manually + * discarding the last packet from the host via the \ref Endpoint_ClearOUT() macro. + * + * \note This routine should not be used on CONTROL type endpoints. + * + * \param[out] Buffer Pointer to the destination data buffer to write to. + * \param[in] Length Number of bytes to send via the currently selected endpoint. + * \param[in] BytesProcessed Pointer to a location where the total number of bytes processed in the current + * transaction should be updated, \c NULL if the entire stream should be read at once. + * + * \return A value from the \ref Endpoint_Stream_RW_ErrorCodes_t enum. + */ + uint8_t Endpoint_Read_Stream_BE(void* const Buffer, + uint16_t Length, + uint16_t* const BytesProcessed) ATTR_NON_NULL_PTR_ARG(1); + + /** Writes the given number of bytes to the CONTROL type endpoint from the given buffer in little endian, + * sending full packets to the host as needed. The host OUT acknowledgement is not automatically cleared + * in both failure and success states; the user is responsible for manually clearing the status OUT packet + * to finalize the transfer's status stage via the \ref Endpoint_ClearOUT() macro. + * + * \note This function automatically sends the last packet in the data stage of the transaction; when the + * function returns, the user is responsible for clearing the <b>status</b> stage of the transaction. + * Note that the status stage packet is sent or received in the opposite direction of the data flow. + * \n\n + * + * \note This routine should only be used on CONTROL type endpoints. + * + * \warning Unlike the standard stream read/write commands, the control stream commands cannot be chained + * together; i.e. the entire stream data must be read or written at the one time. + * + * \param[in] Buffer Pointer to the source data buffer to read from. + * \param[in] Length Number of bytes to read for the currently selected endpoint into the buffer. + * + * \return A value from the \ref Endpoint_ControlStream_RW_ErrorCodes_t enum. + */ + uint8_t Endpoint_Write_Control_Stream_LE(const void* const Buffer, + uint16_t Length) ATTR_NON_NULL_PTR_ARG(1); + + /** Writes the given number of bytes to the CONTROL type endpoint from the given buffer in big endian, + * sending full packets to the host as needed. The host OUT acknowledgement is not automatically cleared + * in both failure and success states; the user is responsible for manually clearing the status OUT packet + * to finalize the transfer's status stage via the \ref Endpoint_ClearOUT() macro. + * + * \note This function automatically sends the last packet in the data stage of the transaction; when the + * function returns, the user is responsible for clearing the <b>status</b> stage of the transaction. + * Note that the status stage packet is sent or received in the opposite direction of the data flow. + * \n\n + * + * \note This routine should only be used on CONTROL type endpoints. + * + * \warning Unlike the standard stream read/write commands, the control stream commands cannot be chained + * together; i.e. the entire stream data must be read or written at the one time. + * + * \param[in] Buffer Pointer to the source data buffer to read from. + * \param[in] Length Number of bytes to read for the currently selected endpoint into the buffer. + * + * \return A value from the \ref Endpoint_ControlStream_RW_ErrorCodes_t enum. + */ + uint8_t Endpoint_Write_Control_Stream_BE(const void* const Buffer, + uint16_t Length) ATTR_NON_NULL_PTR_ARG(1); + + /** Reads the given number of bytes from the CONTROL endpoint from the given buffer in little endian, + * discarding fully read packets from the host as needed. The device IN acknowledgement is not + * automatically sent after success or failure states; the user is responsible for manually sending the + * status IN packet to finalize the transfer's status stage via the \ref Endpoint_ClearIN() macro. + * + * \note This function automatically sends the last packet in the data stage of the transaction; when the + * function returns, the user is responsible for clearing the <b>status</b> stage of the transaction. + * Note that the status stage packet is sent or received in the opposite direction of the data flow. + * \n\n + * + * \note This routine should only be used on CONTROL type endpoints. + * + * \warning Unlike the standard stream read/write commands, the control stream commands cannot be chained + * together; i.e. the entire stream data must be read or written at the one time. + * + * \param[out] Buffer Pointer to the destination data buffer to write to. + * \param[in] Length Number of bytes to send via the currently selected endpoint. + * + * \return A value from the \ref Endpoint_ControlStream_RW_ErrorCodes_t enum. + */ + uint8_t Endpoint_Read_Control_Stream_LE(void* const Buffer, + uint16_t Length) ATTR_NON_NULL_PTR_ARG(1); + + /** Reads the given number of bytes from the CONTROL endpoint from the given buffer in big endian, + * discarding fully read packets from the host as needed. The device IN acknowledgement is not + * automatically sent after success or failure states; the user is responsible for manually sending the + * status IN packet to finalize the transfer's status stage via the \ref Endpoint_ClearIN() macro. + * + * \note This function automatically sends the last packet in the data stage of the transaction; when the + * function returns, the user is responsible for clearing the <b>status</b> stage of the transaction. + * Note that the status stage packet is sent or received in the opposite direction of the data flow. + * \n\n + * + * \note This routine should only be used on CONTROL type endpoints. + * + * \warning Unlike the standard stream read/write commands, the control stream commands cannot be chained + * together; i.e. the entire stream data must be read or written at the one time. + * + * \param[out] Buffer Pointer to the destination data buffer to write to. + * \param[in] Length Number of bytes to send via the currently selected endpoint. + * + * \return A value from the \ref Endpoint_ControlStream_RW_ErrorCodes_t enum. + */ + uint8_t Endpoint_Read_Control_Stream_BE(void* const Buffer, + uint16_t Length) ATTR_NON_NULL_PTR_ARG(1); + //@} + + /* Disable C linkage for C++ Compilers: */ + #if defined(__cplusplus) + } + #endif + +#endif + +/** @} */ + |