c79f6e2586
Make all USB driver headers include USBMode.h first, to ensure that the relevant USB mode macros are defined.
461 lines
23 KiB
C
461 lines
23 KiB
C
/*
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LUFA Library
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Copyright (C) Dean Camera, 2011.
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dean [at] fourwalledcubicle [dot] com
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www.lufa-lib.org
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*/
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/*
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Copyright 2011 Dean Camera (dean [at] fourwalledcubicle [dot] com)
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Permission to use, copy, modify, distribute, and sell this
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software and its documentation for any purpose is hereby granted
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without fee, provided that the above copyright notice appear in
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all 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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/** \file
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* \brief Pipe data stream transmission and reception management.
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* \copydetails Group_PipeStreamRW
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*
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* \note This file should not be included directly. It is automatically included as needed by the USB driver
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* dispatch header located in LUFA/Drivers/USB/USB.h.
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*/
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/** \ingroup Group_PipeRW
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* \defgroup Group_PipeStreamRW Read/Write of Multi-Byte Streams
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* \brief Pipe data stream transmission and reception management.
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*
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* Functions, macros, variables, enums and types related to data reading and writing of data streams from
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* and to pipes.
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*
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* @{
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*/
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#ifndef __PIPE_STREAM_H__
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#define __PIPE_STREAM_H__
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/* Includes: */
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#include "../../../Common/Common.h"
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#include "USBMode.h"
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#include "USBTask.h"
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/* Enable C linkage for C++ Compilers: */
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#if defined(__cplusplus)
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extern "C" {
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#endif
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/* Preprocessor Checks: */
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#if !defined(__INCLUDE_FROM_USB_DRIVER)
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#error Do not include this file directly. Include LUFA/Drivers/USB/USB.h instead.
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#endif
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/* Public Interface - May be used in end-application: */
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/* Enums: */
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/** Enum for the possible error return codes of the Pipe_*_Stream_* functions. */
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enum Pipe_Stream_RW_ErrorCodes_t
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{
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PIPE_RWSTREAM_NoError = 0, /**< Command completed successfully, no error. */
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PIPE_RWSTREAM_PipeStalled = 1, /**< The device stalled the pipe during the transfer. */
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PIPE_RWSTREAM_DeviceDisconnected = 2, /**< Device was disconnected from the host during
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* the transfer.
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*/
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PIPE_RWSTREAM_Timeout = 3, /**< The device failed to accept or send the next packet
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* within the software timeout period set by the
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* \ref USB_STREAM_TIMEOUT_MS macro.
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*/
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PIPE_RWSTREAM_IncompleteTransfer = 4, /**< Indicates that the pipe bank became full/empty before the
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* complete contents of the stream could be transferred.
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*/
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};
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/* Function Prototypes: */
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/** \name Stream functions for null data */
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//@{
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/** Reads and discards the given number of bytes from the pipe, discarding fully read packets from the host
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* as needed. The last packet is not automatically discarded once the remaining bytes has been read; the
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* user is responsible for manually discarding the last packet from the device via the \ref Pipe_ClearIN() macro.
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*
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* If the BytesProcessed parameter is \c NULL, the entire stream transfer is attempted at once, failing or
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* succeeding as a single unit. If the BytesProcessed parameter points to a valid storage location, the transfer
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* will instead be performed as a series of chunks. Each time the pipe bank becomes empty while there is still data
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* to process (and after the current packet has been acknowledged) the BytesProcessed location will be updated with
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* the total number of bytes processed in the stream, and the function will exit with an error code of
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* \ref PIPE_RWSTREAM_IncompleteTransfer. This allows for any abort checking to be performed in the user code - to
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* continue the transfer, call the function again with identical parameters and it will resume until the BytesProcessed
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* value reaches the total transfer length.
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*
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* <b>Single Stream Transfer Example:</b>
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* \code
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* uint8_t ErrorCode;
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*
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* if ((ErrorCode = Pipe_Discard_Stream(512, NULL)) != PIPE_RWSTREAM_NoError)
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* {
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* // Stream failed to complete - check ErrorCode here
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* }
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* \endcode
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*
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* <b>Partial Stream Transfers Example:</b>
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* \code
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* uint8_t ErrorCode;
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* uint16_t BytesProcessed;
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*
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* BytesProcessed = 0;
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* while ((ErrorCode = Pipe_Discard_Stream(512, &BytesProcessed)) == PIPE_RWSTREAM_IncompleteTransfer)
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* {
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* // Stream not yet complete - do other actions here, abort if required
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* }
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*
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* if (ErrorCode != PIPE_RWSTREAM_NoError)
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* {
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* // Stream failed to complete - check ErrorCode here
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* }
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* \endcode
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*
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* \note The pipe token is set automatically, thus this can be used on bi-directional pipes directly without
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* having to explicitly change the data direction with a call to \ref Pipe_SetPipeToken().
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*
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* \param[in] Length Number of bytes to discard via the currently selected pipe.
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* \param[in] BytesProcessed Pointer to a location where the total number of bytes already processed should
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* updated, \c NULL if the entire stream should be processed at once.
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*
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* \return A value from the \ref Pipe_Stream_RW_ErrorCodes_t enum.
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*/
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uint8_t Pipe_Discard_Stream(uint16_t Length,
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uint16_t* const BytesProcessed);
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/** Writes a given number of zeroed bytes to the pipe, sending full pipe packets from the host to the device
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* as needed. The last packet is not automatically sent once the remaining bytes has been written; the
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* user is responsible for manually discarding the last packet from the device via the \ref Pipe_ClearOUT() macro.
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*
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* If the BytesProcessed parameter is \c NULL, the entire stream transfer is attempted at once, failing or
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* succeeding as a single unit. If the BytesProcessed parameter points to a valid storage location, the transfer
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* will instead be performed as a series of chunks. Each time the pipe bank becomes full while there is still data
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* to process (and after the current packet transmission has been initiated) the BytesProcessed location will be
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* updated with the total number of bytes processed in the stream, and the function will exit with an error code of
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* \ref PIPE_RWSTREAM_IncompleteTransfer. This allows for any abort checking to be performed in the user code - to
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* continue the transfer, call the function again with identical parameters and it will resume until the BytesProcessed
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* value reaches the total transfer length.
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*
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* <b>Single Stream Transfer Example:</b>
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* \code
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* uint8_t ErrorCode;
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*
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* if ((ErrorCode = Pipe_Null_Stream(512, NULL)) != PIPE_RWSTREAM_NoError)
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* {
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* // Stream failed to complete - check ErrorCode here
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* }
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* \endcode
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*
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* <b>Partial Stream Transfers Example:</b>
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* \code
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* uint8_t ErrorCode;
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* uint16_t BytesProcessed;
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*
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* BytesProcessed = 0;
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* while ((ErrorCode = Pipe_Null_Stream(512, &BytesProcessed)) == PIPE_RWSTREAM_IncompleteTransfer)
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* {
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* // Stream not yet complete - do other actions here, abort if required
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* }
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*
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* if (ErrorCode != PIPE_RWSTREAM_NoError)
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* {
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* // Stream failed to complete - check ErrorCode here
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* }
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* \endcode
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*
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* \note The pipe token is set automatically, thus this can be used on bi-directional pipes directly without
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* having to explicitly change the data direction with a call to \ref Pipe_SetPipeToken().
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*
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* \param[in] Length Number of zero bytes to write via the currently selected pipe.
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* \param[in] BytesProcessed Pointer to a location where the total number of bytes already processed should
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* updated, \c NULL if the entire stream should be processed at once.
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*
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* \return A value from the \ref Pipe_Stream_RW_ErrorCodes_t enum.
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*/
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uint8_t Pipe_Null_Stream(uint16_t Length,
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uint16_t* const BytesProcessed);
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//@}
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/** \name Stream functions for RAM source/destination data */
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//@{
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/** Writes the given number of bytes to the pipe from the given buffer in little endian,
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* sending full packets to the device as needed. The last packet filled is not automatically sent;
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* the user is responsible for manually sending the last written packet to the host via the
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* \ref Pipe_ClearOUT() macro. Between each USB packet, the given stream callback function is
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* executed repeatedly until the next packet is ready, allowing for early aborts of stream transfers.
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*
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* If the BytesProcessed parameter is \c NULL, the entire stream transfer is attempted at once,
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* failing or succeeding as a single unit. If the BytesProcessed parameter points to a valid
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* storage location, the transfer will instead be performed as a series of chunks. Each time
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* the pipe bank becomes full while there is still data to process (and after the current
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* packet transmission has been initiated) the BytesProcessed location will be updated with the
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* total number of bytes processed in the stream, and the function will exit with an error code of
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* \ref PIPE_RWSTREAM_IncompleteTransfer. This allows for any abort checking to be performed
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* in the user code - to continue the transfer, call the function again with identical parameters
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* and it will resume until the BytesProcessed value reaches the total transfer length.
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*
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* <b>Single Stream Transfer Example:</b>
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* \code
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* uint8_t DataStream[512];
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* uint8_t ErrorCode;
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*
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* if ((ErrorCode = Pipe_Write_Stream_LE(DataStream, sizeof(DataStream),
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* NULL)) != PIPE_RWSTREAM_NoError)
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* {
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* // Stream failed to complete - check ErrorCode here
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* }
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* \endcode
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*
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* <b>Partial Stream Transfers Example:</b>
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* \code
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* uint8_t DataStream[512];
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* uint8_t ErrorCode;
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* uint16_t BytesProcessed;
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*
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* BytesProcessed = 0;
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* while ((ErrorCode = Pipe_Write_Stream_LE(DataStream, sizeof(DataStream),
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* &BytesProcessed)) == PIPE_RWSTREAM_IncompleteTransfer)
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* {
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* // Stream not yet complete - do other actions here, abort if required
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* }
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*
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* if (ErrorCode != PIPE_RWSTREAM_NoError)
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* {
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* // Stream failed to complete - check ErrorCode here
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* }
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* \endcode
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*
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* \note The pipe token is set automatically, thus this can be used on bi-directional pipes directly without
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* having to explicitly change the data direction with a call to \ref Pipe_SetPipeToken().
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*
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* \param[in] Buffer Pointer to the source data buffer to read from.
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* \param[in] Length Number of bytes to read for the currently selected pipe into the buffer.
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* \param[in] BytesProcessed Pointer to a location where the total number of bytes already processed should
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* updated, \c NULL if the entire stream should be written at once.
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*
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* \return A value from the \ref Pipe_Stream_RW_ErrorCodes_t enum.
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*/
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uint8_t Pipe_Write_Stream_LE(const void* const Buffer,
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uint16_t Length,
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uint16_t* const BytesProcessed) ATTR_NON_NULL_PTR_ARG(1);
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/** Writes the given number of bytes to the pipe from the given buffer in big endian,
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* sending full packets to the device as needed. The last packet filled is not automatically sent;
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* the user is responsible for manually sending the last written packet to the host via the
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* \ref Pipe_ClearOUT() macro. Between each USB packet, the given stream callback function is
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* executed repeatedly until the next packet is ready, allowing for early aborts of stream transfers.
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*
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* \note The pipe token is set automatically, thus this can be used on bi-directional pipes directly without
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* having to explicitly change the data direction with a call to \ref Pipe_SetPipeToken().
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*
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* \param[in] Buffer Pointer to the source data buffer to read from.
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* \param[in] Length Number of bytes to read for the currently selected pipe into the buffer.
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* \param[in] BytesProcessed Pointer to a location where the total number of bytes already processed should
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* updated, \c NULL if the entire stream should be written at once.
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*
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* \return A value from the \ref Pipe_Stream_RW_ErrorCodes_t enum.
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*/
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uint8_t Pipe_Write_Stream_BE(const void* const Buffer,
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uint16_t Length,
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uint16_t* const BytesProcessed) ATTR_NON_NULL_PTR_ARG(1);
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/** Reads the given number of bytes from the pipe into the given buffer in little endian,
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* sending full packets to the device as needed. The last packet filled is not automatically sent;
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* the user is responsible for manually sending the last written packet to the host via the
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* \ref Pipe_ClearIN() macro. Between each USB packet, the given stream callback function is
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* executed repeatedly until the next packet is ready, allowing for early aborts of stream transfers.
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*
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* If the BytesProcessed parameter is \c NULL, the entire stream transfer is attempted at once,
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* failing or succeeding as a single unit. If the BytesProcessed parameter points to a valid
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* storage location, the transfer will instead be performed as a series of chunks. Each time
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* the pipe bank becomes empty while there is still data to process (and after the current
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* packet has been acknowledged) the BytesProcessed location will be updated with the total number
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* of bytes processed in the stream, and the function will exit with an error code of
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* \ref PIPE_RWSTREAM_IncompleteTransfer. This allows for any abort checking to be performed
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* in the user code - to continue the transfer, call the function again with identical parameters
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* and it will resume until the BytesProcessed value reaches the total transfer length.
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*
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* <b>Single Stream Transfer Example:</b>
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* \code
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* uint8_t DataStream[512];
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* uint8_t ErrorCode;
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*
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* if ((ErrorCode = Pipe_Read_Stream_LE(DataStream, sizeof(DataStream),
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* NULL)) != PIPE_RWSTREAM_NoError)
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* {
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* // Stream failed to complete - check ErrorCode here
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* }
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* \endcode
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*
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* <b>Partial Stream Transfers Example:</b>
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* \code
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* uint8_t DataStream[512];
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* uint8_t ErrorCode;
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* uint16_t BytesProcessed;
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*
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* BytesProcessed = 0;
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* while ((ErrorCode = Pipe_Read_Stream_LE(DataStream, sizeof(DataStream),
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* &BytesProcessed)) == PIPE_RWSTREAM_IncompleteTransfer)
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* {
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* // Stream not yet complete - do other actions here, abort if required
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* }
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*
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* if (ErrorCode != PIPE_RWSTREAM_NoError)
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* {
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* // Stream failed to complete - check ErrorCode here
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* }
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* \endcode
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*
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* \note The pipe token is set automatically, thus this can be used on bi-directional pipes directly without
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* having to explicitly change the data direction with a call to \ref Pipe_SetPipeToken().
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*
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* \param[out] Buffer Pointer to the source data buffer to write to.
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* \param[in] Length Number of bytes to read for the currently selected pipe to read from.
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* \param[in] BytesProcessed Pointer to a location where the total number of bytes already processed should
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* updated, \c NULL if the entire stream should be read at once.
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*
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* \return A value from the \ref Pipe_Stream_RW_ErrorCodes_t enum.
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*/
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uint8_t Pipe_Read_Stream_LE(void* const Buffer,
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uint16_t Length,
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uint16_t* const BytesProcessed) ATTR_NON_NULL_PTR_ARG(1);
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/** Reads the given number of bytes from the pipe into the given buffer in big endian,
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* sending full packets to the device as needed. The last packet filled is not automatically sent;
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* the user is responsible for manually sending the last written packet to the host via the
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* \ref Pipe_ClearIN() macro. Between each USB packet, the given stream callback function is
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* executed repeatedly until the next packet is ready, allowing for early aborts of stream transfers.
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*
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* \note The pipe token is set automatically, thus this can be used on bi-directional pipes directly without
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* having to explicitly change the data direction with a call to \ref Pipe_SetPipeToken().
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*
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* \param[out] Buffer Pointer to the source data buffer to write to.
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* \param[in] Length Number of bytes to read for the currently selected pipe to read from.
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* \param[in] BytesProcessed Pointer to a location where the total number of bytes already processed should
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* updated, \c NULL if the entire stream should be read at once.
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*
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* \return A value from the \ref Pipe_Stream_RW_ErrorCodes_t enum.
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*/
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uint8_t Pipe_Read_Stream_BE(void* const Buffer,
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uint16_t Length,
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uint16_t* const BytesProcessed) ATTR_NON_NULL_PTR_ARG(1);
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//@}
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/** \name Stream functions for EEPROM source/destination data */
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//@{
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/** EEPROM buffer source version of \ref Pipe_Write_Stream_LE().
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*
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* \param[in] Buffer Pointer to the source data buffer to read from.
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* \param[in] Length Number of bytes to read for the currently selected pipe into the buffer.
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* \param[in] BytesProcessed Pointer to a location where the total number of bytes already processed should
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* updated, \c NULL if the entire stream should be written at once.
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*
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* \return A value from the \ref Pipe_Stream_RW_ErrorCodes_t enum.
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*/
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uint8_t Pipe_Write_EStream_LE(const void* const Buffer,
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uint16_t Length,
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uint16_t* const BytesProcessed) ATTR_NON_NULL_PTR_ARG(1);
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/** EEPROM buffer source version of \ref Pipe_Write_Stream_BE().
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*
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* \param[in] Buffer Pointer to the source data buffer to read from.
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* \param[in] Length Number of bytes to read for the currently selected pipe into the buffer.
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* \param[in] BytesProcessed Pointer to a location where the total number of bytes already processed should
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* updated, \c NULL if the entire stream should be written at once.
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*
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* \return A value from the \ref Pipe_Stream_RW_ErrorCodes_t enum.
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*/
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uint8_t Pipe_Write_EStream_BE(const void* const Buffer,
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uint16_t Length,
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uint16_t* const BytesProcessed) ATTR_NON_NULL_PTR_ARG(1);
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/** EEPROM buffer source version of \ref Pipe_Read_Stream_LE().
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*
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* \param[out] Buffer Pointer to the source data buffer to write to.
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* \param[in] Length Number of bytes to read for the currently selected pipe to read from.
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* \param[in] BytesProcessed Pointer to a location where the total number of bytes already processed should
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* updated, \c NULL if the entire stream should be read at once.
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*
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* \return A value from the \ref Pipe_Stream_RW_ErrorCodes_t enum.
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*/
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uint8_t Pipe_Read_EStream_LE(void* const Buffer,
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uint16_t Length,
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uint16_t* const BytesProcessed) ATTR_NON_NULL_PTR_ARG(1);
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/** EEPROM buffer source version of \ref Pipe_Read_Stream_BE().
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*
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* \param[out] Buffer Pointer to the source data buffer to write to.
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* \param[in] Length Number of bytes to read for the currently selected pipe to read from.
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* \param[in] BytesProcessed Pointer to a location where the total number of bytes already processed should
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* updated, \c NULL if the entire stream should be read at once.
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*
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* \return A value from the \ref Pipe_Stream_RW_ErrorCodes_t enum.
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*/
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uint8_t Pipe_Read_EStream_BE(void* const Buffer,
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uint16_t Length,
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uint16_t* const BytesProcessed) ATTR_NON_NULL_PTR_ARG(1);
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//@}
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/** \name Stream functions for PROGMEM source/destination data */
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//@{
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/** FLASH buffer source version of \ref Pipe_Write_Stream_LE().
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*
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* \pre The FLASH data must be located in the first 64KB of FLASH for this function to work correctly.
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*
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* \param[in] Buffer Pointer to the source data buffer to read from.
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* \param[in] Length Number of bytes to read for the currently selected pipe into the buffer.
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* \param[in] BytesProcessed Pointer to a location where the total number of bytes already processed should
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* updated, \c NULL if the entire stream should be written at once.
|
|
*
|
|
* \return A value from the \ref Pipe_Stream_RW_ErrorCodes_t enum.
|
|
*/
|
|
uint8_t Pipe_Write_PStream_LE(const void* const Buffer,
|
|
uint16_t Length,
|
|
uint16_t* const BytesProcessed) ATTR_NON_NULL_PTR_ARG(1);
|
|
|
|
/** FLASH buffer source version of \ref Pipe_Write_Stream_BE().
|
|
*
|
|
* \pre The FLASH data must be located in the first 64KB of FLASH for this function to work correctly.
|
|
*
|
|
* \param[in] Buffer Pointer to the source data buffer to read from.
|
|
* \param[in] Length Number of bytes to read for the currently selected pipe into the buffer.
|
|
* \param[in] BytesProcessed Pointer to a location where the total number of bytes already processed should
|
|
* updated, \c NULL if the entire stream should be written at once.
|
|
*
|
|
* \return A value from the \ref Pipe_Stream_RW_ErrorCodes_t enum.
|
|
*/
|
|
uint8_t Pipe_Write_PStream_BE(const void* const Buffer,
|
|
uint16_t Length,
|
|
uint16_t* const BytesProcessed) ATTR_NON_NULL_PTR_ARG(1);
|
|
//@}
|
|
|
|
/* Disable C linkage for C++ Compilers: */
|
|
#if defined(__cplusplus)
|
|
}
|
|
#endif
|
|
|
|
#endif
|
|
|
|
/** @} */
|
|
|