mirror of https://github.com/rusefi/ChibiOS.git
git-svn-id: svn://svn.code.sf.net/p/chibios/svn/trunk@4171 35acf78f-673a-0410-8e92-d51de3d6d3f4
This commit is contained in:
gdisirio
parent
de3f32e405
commit
6ee956d7b6
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/*
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ChibiOS/RT - Copyright (C) 2006,2007,2008,2009,2010,
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2011,2012 Giovanni Di Sirio.
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This file is part of ChibiOS/RT.
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ChibiOS/RT is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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||||
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||||
ChibiOS/RT is distributed in the hope that it will be useful,
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||||
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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||||
GNU General Public License for more details.
|
||||
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||||
You should have received a copy of the GNU General Public License
|
||||
along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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/**
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* @file io_block.h
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* @brief I/O block devices access.
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* @details This header defines abstract interfaces useful to access generic
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* I/O block devices in a standardized way.
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*
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* @addtogroup IO_BLOCK
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* @details This module define an abstract interface for accessing generic
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* block devices.
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* Note that no code is present, just abstract interfaces-like
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* structures, you should look at the system as to a set of
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* abstract C++ classes (even if written in C). This system
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* has then advantage to make the access to block devices
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* independent from the implementation logic.
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* @{
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*/
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#ifndef _IO_BLOCK_H_
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#define _IO_BLOCK_H_
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/**
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* @brief Block device info.
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*/
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typedef struct {
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uint32_t blk_size; /**< @brief Block size in bytes. */
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uint32_t blk_num; /**< @brief Total number of blocks. */
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} BlockDeviceInfo;
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/**
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* @brief @p BaseBlockDevice specific methods.
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*/
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#define _base_block_device_methods \
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/* Removable media detection.*/ \
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bool_t is_inserted(void *instance); \
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/* Removable write protection detection.*/ \
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bool_t is_protected(void *instance); \
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/* Connection to the block device.*/ \
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bool_t (*connect)(void *instance); \
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/* Disconnection from the block device.*/ \
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bool_t (*disconnect)(void *instance); \
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/* Reads one or more blocks.*/ \
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bool_t (*read)(void *instance, uint32_t startblk, \
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uint8_t *buffer, uint32_t n); \
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/* Writes one or more blocks.*/ \
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bool_t (*write)(void *instance, uint32_t startblk, \
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const uint8_t *buffer, uint32_t n); \
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/* Write operations synchronization.*/ \
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bool_t (*sync)(void *instance); \
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/* Obtains info about the media.*/ \
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bool_t (*get_info)(void *instance, BlockDeviceInfo *bdip);
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/**
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* @brief @p BaseBlockDevice specific data.
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* @note It is empty because @p BaseBlockDevice is only an interface
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* without implementation.
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*/
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#define _base_block_device_data
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/**
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* @brief @p BaseBlockDevice virtual methods table.
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*/
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struct BaseBlockDeviceVMT {
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_base_block_device_methods
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};
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/**
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* @brief Base block device class.
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* @details This class represents a generic, block-accessible, device.
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*/
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typedef struct {
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/** @brief Virtual Methods Table.*/
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const struct BaseBlockDeviceVMT *vmt;
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_base_block_device_data
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} BaseBlockDevice;
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/**
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* @name Macro Functions (BaseBlockDevice)
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* @{
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*/
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/**
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* @brief Returns the media insertion status.
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*
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* @param[in] ip pointer to a @p BaseBlockDevice or derived class
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*
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* @return The media state.
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* @retval FALSE media not inserted.
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* @retval TRUE media inserted.
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*
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* @api
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*/
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#define blkIsInserted(ip) ((ip)->vmt->is_inserted(ip))
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/**
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* @brief Returns the media write protection status.
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*
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* @param[in] ip pointer to a @p BaseBlockDevice or derived class
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*
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* @return The media state.
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* @retval FALSE writable media.
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* @retval TRUE non writable media.
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*
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* @api
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*/
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#define blkIsWriteProtected(ip) ((ip)->vmt->is_protected(ip))
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/**
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* @brief Performs the initialization procedure on the block device.
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* @details This function should be performed before I/O operations can be
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* attempted on the block device and after insertion has been
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* confirmed using @p blkIsInserted().
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*
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* @param[in] ip pointer to a @p BaseBlockDevice or derived class
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*
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* @return The operation status.
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* @retval FALSE operation succeeded.
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* @retval TRUE operation failed.
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*
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* @api
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*/
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#define blkConnect(ip) ((ip)->vmt->connect(ip))
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/**
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* @brief Terminates operations on the block device.
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* @details This operation safely terminates operations on the block device.
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*
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* @param[in] ip pointer to a @p BaseBlockDevice or derived class
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*
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* @return The operation status.
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* @retval FALSE operation succeeded.
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* @retval TRUE operation failed.
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*
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* @api
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*/
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#define blkDisconnect(ip) ((ip)->vmt-disconnect(ip))
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/**
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* @brief Reads one or more blocks.
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*
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* @param[in] ip pointer to a @p BaseBlockDevice or derived class
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* @param[in] startblk first block to read
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* @param[out] buf pointer to the read buffer
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* @param[in] n number of blocks to read
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*
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* @return The operation status.
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* @retval FALSE operation succeeded.
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* @retval TRUE operation failed.
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*
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* @api
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*/
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#define blkRead(ip, startblk, buffer, n) \
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((ip)->vmt->read(ip, startblk, buffer, n))
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/**
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* @brief Writes one or more blocks.
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*
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* @param[in] ip pointer to a @p BaseBlockDevice or derived class
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* @param[in] startblk first block to write
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* @param[out] buf pointer to the write buffer
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* @param[in] n number of blocks to write
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*
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* @return The operation status.
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* @retval FALSE operation succeeded.
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* @retval TRUE operation failed.
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*
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* @api
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*/
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#define blkWrite(ip, startblk, buffer, n) \
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((ip)->vmt->write(ip, startblk, buffer, n))
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/**
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* @brief Ensures write synchronization.
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*
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* @param[in] ip pointer to a @p BaseBlockDevice or derived class
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*
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* @api
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*/
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#define blkSync(ip) ((ip)->vmt->sync(ip))
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/**
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* @brief Returns a media information structure.
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*
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* @param[in] ip pointer to a @p BaseBlockDevice or derived class
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* @param[out] bdpi pointer to a @p BlockDeviceInfo structure
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*
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* @api
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*/
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#define blkGetInfo(ip, bdip) ((ip)->vmt->get_info(ip, bdip))
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/** @} */
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#endif /* _IO_BLOCK_H_ */
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/** @} */
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@ -0,0 +1,368 @@
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/*
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ChibiOS/RT - Copyright (C) 2006,2007,2008,2009,2010,
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2011,2012 Giovanni Di Sirio.
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||||
|
||||
This file is part of ChibiOS/RT.
|
||||
|
||||
ChibiOS/RT is free software; you can redistribute it and/or modify
|
||||
it under the terms of the GNU General Public License as published by
|
||||
the Free Software Foundation; either version 3 of the License, or
|
||||
(at your option) any later version.
|
||||
|
||||
ChibiOS/RT is distributed in the hope that it will be useful,
|
||||
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
GNU General Public License for more details.
|
||||
|
||||
You should have received a copy of the GNU General Public License
|
||||
along with this program. If not, see <http://www.gnu.org/licenses/>.
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||||
*/
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/**
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* @file io_serial.h
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* @brief I/O serial devices access.
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* @details This header defines abstract interfaces useful to access generic
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* I/O serial devices in a standardized way.
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*
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* @addtogroup IO_SERIAL
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* @details This module defines an abstract interface for I/O channels by
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* extending the @p BaseSequentialStream interface. Note that no code
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* is present, I/O channels are just abstract interface like
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* structures, you should look at the systems as to a set of abstract
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* C++ classes (even if written in C). Specific device drivers can
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* use/extend the interface and implement them.<br>
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* This system has the advantage to make the access to channels
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* independent from the implementation logic.
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* @{
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*/
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#ifndef _IO_SERIAL_H_
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#define _IO_SERIAL_H_
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/**
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* @brief @p BaseChannel specific methods.
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*/
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#define _base_channel_methods \
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_base_sequential_stream_methods \
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/* Channel output check.*/ \
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bool_t (*putwouldblock)(void *instance); \
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/* Channel input check.*/ \
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bool_t (*getwouldblock)(void *instance); \
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/* Channel put method with timeout specification.*/ \
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msg_t (*put)(void *instance, uint8_t b, systime_t time); \
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/* Channel get method with timeout specification.*/ \
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msg_t (*get)(void *instance, systime_t time); \
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/* Channel write method with timeout specification.*/ \
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size_t (*writet)(void *instance, const uint8_t *bp, \
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size_t n, systime_t time); \
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/* Channel read method with timeout specification.*/ \
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size_t (*readt)(void *instance, uint8_t *bp, size_t n, systime_t time);
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/**
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* @brief @p BaseChannel specific data.
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* @note It is empty because @p BaseChannel is only an interface without
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* implementation.
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*/
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#define _base_channel_data \
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_base_sequential_stream_data
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/**
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* @extends BaseSequentialStreamVMT
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*
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* @brief @p BaseChannel virtual methods table.
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*/
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struct BaseChannelVMT {
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_base_channel_methods
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};
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/**
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* @extends BaseSequentialStream
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*
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* @brief Base channel class.
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* @details This class represents a generic, byte-wide, I/O channel. This class
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* introduces generic I/O primitives with timeout specification.
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*/
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typedef struct {
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/** @brief Virtual Methods Table.*/
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const struct BaseChannelVMT *vmt;
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_base_channel_data
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} BaseChannel;
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/**
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* @name Macro Functions (BaseChannel)
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* @{
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*/
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/**
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* @brief Channel output check.
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* @details This function verifies if a subsequent put/write operation would
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* block.
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*
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* @param[in] ip pointer to a @p BaseChannel or derived class
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* @return The output queue status.
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* @retval FALSE if the output queue has space and would not block a
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* write operation.
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* @retval TRUE if the output queue is full and would block a write
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* operation.
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*
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||||
* @api
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||||
*/
|
||||
#define srlPutWouldBlock(ip) ((ip)->vmt->putwouldblock(ip))
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|
||||
/**
|
||||
* @brief Channel input check.
|
||||
* @details This function verifies if a subsequent get/read operation would
|
||||
* block.
|
||||
*
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||||
* @param[in] ip pointer to a @p BaseChannel or derived class
|
||||
* @return The input queue status.
|
||||
* @retval FALSE if the input queue contains data and would not block a
|
||||
* read operation.
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||||
* @retval TRUE if the input queue is empty and would block a read
|
||||
* operation.
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||||
*
|
||||
* @api
|
||||
*/
|
||||
#define srlGetWouldBlock(ip) ((ip)->vmt->getwouldblock(ip))
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|
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/**
|
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* @brief Channel blocking byte write.
|
||||
* @details This function writes a byte value to a channel. If the channel
|
||||
* is not ready to accept data then the calling thread is suspended.
|
||||
*
|
||||
* @param[in] ip pointer to a @p BaseChannel or derived class
|
||||
* @param[in] b the byte value to be written to the channel
|
||||
* @return The operation status.
|
||||
* @retval Q_OK if the operation succeeded.
|
||||
* @retval Q_RESET if the channel associated queue (if any) was reset.
|
||||
*
|
||||
* @api
|
||||
*/
|
||||
#define srlPut(ip, b) ((ip)->vmt->put(ip, b, TIME_INFINITE))
|
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|
||||
/**
|
||||
* @brief Channel blocking byte write with timeout.
|
||||
* @details This function writes a byte value to a channel. If the channel
|
||||
* is not ready to accept data then the calling thread is suspended.
|
||||
*
|
||||
* @param[in] ip pointer to a @p BaseChannel or derived class
|
||||
* @param[in] b the byte value to be written to the channel
|
||||
* @param[in] time the number of ticks before the operation timeouts,
|
||||
* the following special values are allowed:
|
||||
* - @a TIME_IMMEDIATE immediate timeout.
|
||||
* - @a TIME_INFINITE no timeout.
|
||||
* .
|
||||
* @return The operation status.
|
||||
* @retval Q_OK if the operation succeeded.
|
||||
* @retval Q_TIMEOUT if the specified time expired.
|
||||
* @retval Q_RESET if the channel associated queue (if any) was reset.
|
||||
*
|
||||
* @api
|
||||
*/
|
||||
#define srlPutTimeout(ip, b, time) ((ip)->vmt->put(ip, b, time))
|
||||
|
||||
/**
|
||||
* @brief Channel blocking byte read.
|
||||
* @details This function reads a byte value from a channel. If the data
|
||||
* is not available then the calling thread is suspended.
|
||||
*
|
||||
* @param[in] ip pointer to a @p BaseChannel or derived class
|
||||
* @return A byte value from the queue.
|
||||
* @retval Q_RESET if the channel associated queue (if any) has been
|
||||
* reset.
|
||||
*
|
||||
* @api
|
||||
*/
|
||||
#define srlGet(ip) ((ip)->vmt->get(ip, TIME_INFINITE))
|
||||
|
||||
/**
|
||||
* @brief Channel blocking byte read with timeout.
|
||||
* @details This function reads a byte value from a channel. If the data
|
||||
* is not available then the calling thread is suspended.
|
||||
*
|
||||
* @param[in] ip pointer to a @p BaseChannel or derived class
|
||||
* @param[in] time the number of ticks before the operation timeouts,
|
||||
* the following special values are allowed:
|
||||
* - @a TIME_IMMEDIATE immediate timeout.
|
||||
* - @a TIME_INFINITE no timeout.
|
||||
* .
|
||||
* @return A byte value from the queue.
|
||||
* @retval Q_TIMEOUT if the specified time expired.
|
||||
* @retval Q_RESET if the channel associated queue (if any) has been
|
||||
* reset.
|
||||
*
|
||||
* @api
|
||||
*/
|
||||
#define srlGetTimeout(ip, time) ((ip)->vmt->get(ip, time))
|
||||
|
||||
/**
|
||||
* @brief Channel blocking write with timeout.
|
||||
* @details The function writes data from a buffer to a channel. If the channel
|
||||
* is not ready to accept data then the calling thread is suspended.
|
||||
*
|
||||
* @param[in] ip pointer to a @p BaseChannel or derived class
|
||||
* @param[out] bp pointer to the data buffer
|
||||
* @param[in] n the maximum amount of data to be transferred
|
||||
* @param[in] time the number of ticks before the operation timeouts,
|
||||
* the following special values are allowed:
|
||||
* - @a TIME_IMMEDIATE immediate timeout.
|
||||
* - @a TIME_INFINITE no timeout.
|
||||
* .
|
||||
* @return The number of bytes transferred.
|
||||
*
|
||||
* @api
|
||||
*/
|
||||
#define srlWriteTimeout(ip, bp, n, time) ((ip)->vmt->writet(ip, bp, n, time))
|
||||
|
||||
/**
|
||||
* @brief Channel blocking read with timeout.
|
||||
* @details The function reads data from a channel into a buffer. If the data
|
||||
* is not available then the calling thread is suspended.
|
||||
*
|
||||
* @param[in] ip pointer to a @p BaseChannel or derived class
|
||||
* @param[in] bp pointer to the data buffer
|
||||
* @param[in] n the maximum amount of data to be transferred
|
||||
* @param[in] time the number of ticks before the operation timeouts,
|
||||
* the following special values are allowed:
|
||||
* - @a TIME_IMMEDIATE immediate timeout.
|
||||
* - @a TIME_INFINITE no timeout.
|
||||
* .
|
||||
* @return The number of bytes transferred.
|
||||
*
|
||||
* @api
|
||||
*/
|
||||
#define srlReadTimeout(ip, bp, n, time) ((ip)->vmt->readt(ip, bp, n, time))
|
||||
/** @} */
|
||||
|
||||
#if CH_USE_EVENTS || defined(__DOXYGEN__)
|
||||
/**
|
||||
* @name I/O status flags
|
||||
* @{
|
||||
*/
|
||||
/** @brief No pending conditions.*/
|
||||
#define IO_NO_ERROR 0
|
||||
/** @brief Connection happened.*/
|
||||
#define IO_CONNECTED 1
|
||||
/** @brief Disconnection happened.*/
|
||||
#define IO_DISCONNECTED 2
|
||||
/** @brief Data available in the input queue.*/
|
||||
#define IO_INPUT_AVAILABLE 4
|
||||
/** @brief Output queue empty.*/
|
||||
#define IO_OUTPUT_EMPTY 8
|
||||
/** @brief Transmission end.*/
|
||||
#define IO_TRANSMISSION_END 16
|
||||
/** @} */
|
||||
|
||||
/**
|
||||
* @brief Type of an I/O condition flags mask.
|
||||
*/
|
||||
typedef uint_fast16_t ioflags_t;
|
||||
|
||||
/**
|
||||
* @brief @p BaseAsynchronousChannel specific methods.
|
||||
*/
|
||||
#define _base_asynchronous_channel_methods \
|
||||
_base_channel_methods \
|
||||
/* Channel read method with timeout specification.*/ \
|
||||
ioflags_t (*getflags)(void *instance);
|
||||
|
||||
/**
|
||||
* @brief @p BaseAsynchronousChannel specific data.
|
||||
*/
|
||||
#define _base_asynchronous_channel_data \
|
||||
_base_channel_data \
|
||||
/* I/O condition event source.*/ \
|
||||
EventSource event; \
|
||||
/* I/O condition flags.*/ \
|
||||
ioflags_t flags;
|
||||
|
||||
/**
|
||||
* @extends BaseChannelVMT
|
||||
*
|
||||
* @brief @p BaseAsynchronousChannel virtual methods table.
|
||||
*/
|
||||
struct BaseAsynchronousChannelVMT {
|
||||
_base_asynchronous_channel_methods
|
||||
};
|
||||
|
||||
/**
|
||||
* @extends BaseChannel
|
||||
*
|
||||
* @brief Base asynchronous channel class.
|
||||
* @details This class extends @p BaseChannel by adding event sources fields
|
||||
* for asynchronous I/O for use in an event-driven environment.
|
||||
*/
|
||||
typedef struct {
|
||||
/** @brief Virtual Methods Table.*/
|
||||
const struct BaseAsynchronousChannelVMT *vmt;
|
||||
_base_asynchronous_channel_data
|
||||
} BaseAsynchronousChannel;
|
||||
|
||||
/**
|
||||
* @name Macro Functions (BaseAsynchronousChannel)
|
||||
* @{
|
||||
*/
|
||||
/**
|
||||
* @brief Returns the I/O condition event source.
|
||||
* @details The event source is broadcasted when an I/O condition happens.
|
||||
*
|
||||
* @param[in] ip pointer to a @p BaseAsynchronousChannel or derived
|
||||
* class
|
||||
* @return A pointer to an @p EventSource object.
|
||||
*
|
||||
* @api
|
||||
*/
|
||||
#define srlGetEventSource(ip) (&((ip)->event))
|
||||
|
||||
/**
|
||||
* @brief Adds status flags to the channel's mask.
|
||||
* @details This function is usually called from the I/O ISRs in order to
|
||||
* notify I/O conditions such as data events, errors, signal
|
||||
* changes etc.
|
||||
*
|
||||
* @param[in] ip pointer to a @p BaseAsynchronousChannel or derived
|
||||
* class
|
||||
* @param[in] mask condition flags to be added to the mask
|
||||
*
|
||||
* @iclass
|
||||
*/
|
||||
#define srlAddFlagsI(ip, mask) { \
|
||||
(ip)->flags |= (mask); \
|
||||
chEvtBroadcastI(&(ip)->event); \
|
||||
}
|
||||
|
||||
/**
|
||||
* @brief Returns and clears the status flags associated to the channel.
|
||||
*
|
||||
* @param[in] ip pointer to a @p BaseAsynchronousChannel or derived
|
||||
* class
|
||||
* @return The condition flags modified since last time this
|
||||
* function was invoked.
|
||||
*
|
||||
* @api
|
||||
*/
|
||||
#define srlGetAndClearFlags(ip) ((ip)->vmt->getflags(ip))
|
||||
/** @} */
|
||||
|
||||
/**
|
||||
* @brief Default implementation of the @p getflags virtual method.
|
||||
*
|
||||
* @param[in] ip pointer to a @p BaseAsynchronousChannel or derived
|
||||
* class
|
||||
* @return The condition flags modified since last time this
|
||||
* function was invoked.
|
||||
*
|
||||
* @notapi
|
||||
*/
|
||||
#define _ser_get_and_clear_flags_impl(ip) \
|
||||
ioflags_t mask; \
|
||||
chSysLock(); \
|
||||
mask = ((BaseAsynchronousChannel *)(ip))->flags; \
|
||||
((BaseAsynchronousChannel *)(ip))->flags = IO_NO_ERROR; \
|
||||
chSysUnlock(); \
|
||||
return mask
|
||||
|
||||
#endif /* CH_USE_EVENTS */
|
||||
|
||||
#endif /* _IO_SERIAL_H_ */
|
||||
|
||||
/** @} */
|
||||
|
|
@ -232,8 +232,8 @@ typedef enum {
|
|||
*
|
||||
* @param[in] sdcp pointer to the @p SDCDriver object
|
||||
* @return The card state.
|
||||
* @retval FALSE card not inserted.
|
||||
* @retval TRUE card inserted.
|
||||
* @retval FALSE not write protected.
|
||||
* @retval TRUE write protected.
|
||||
*
|
||||
* @api
|
||||
*/
|
||||
|
|
|
|||
|
|
@ -204,8 +204,8 @@ void sdcStop(SDCDriver *sdcp) {
|
|||
* @param[in] sdcp pointer to the @p SDCDriver object
|
||||
*
|
||||
* @return The operation status.
|
||||
* @retval FALSE operation succeeded.
|
||||
* @retval TRUE operation failed.
|
||||
* @retval CH_FAILED operation succeeded.
|
||||
* @retval CH_SUCCESS operation failed.
|
||||
*
|
||||
* @api
|
||||
*/
|
||||
|
|
@ -365,8 +365,8 @@ failed:
|
|||
* @param[in] sdcp pointer to the @p SDCDriver object
|
||||
*
|
||||
* @return The operation status.
|
||||
* @retval FALSE operation succeeded.
|
||||
* @retval TRUE operation failed.
|
||||
* @retval CH_FAILED operation succeeded.
|
||||
* @retval CH_SUCCESS operation failed.
|
||||
*
|
||||
* @api
|
||||
*/
|
||||
|
|
@ -406,8 +406,8 @@ bool_t sdcDisconnect(SDCDriver *sdcp) {
|
|||
* @param[in] n number of blocks to read
|
||||
*
|
||||
* @return The operation status.
|
||||
* @retval FALSE operation succeeded.
|
||||
* @retval TRUE operation failed.
|
||||
* @retval CH_FAILED operation succeeded.
|
||||
* @retval CH_SUCCESS operation failed.
|
||||
*
|
||||
* @api
|
||||
*/
|
||||
|
|
@ -443,8 +443,8 @@ bool_t sdcRead(SDCDriver *sdcp, uint32_t startblk,
|
|||
* @param[in] n number of blocks to write
|
||||
*
|
||||
* @return The operation status.
|
||||
* @retval FALSE operation succeeded.
|
||||
* @retval TRUE operation failed.
|
||||
* @retval CH_FAILED operation succeeded.
|
||||
* @retval CH_SUCCESS operation failed.
|
||||
*
|
||||
* @api
|
||||
*/
|
||||
|
|
|
|||
|
|
@ -71,8 +71,8 @@
|
|||
*
|
||||
* @brief @p BaseChannel virtual methods table.
|
||||
*/
|
||||
struct BaseChannelVMT { \
|
||||
_base_channel_methods \
|
||||
struct BaseChannelVMT {
|
||||
_base_channel_methods
|
||||
};
|
||||
|
||||
/**
|
||||
|
|
|
|||
|
|
@ -26,11 +26,11 @@
|
|||
*
|
||||
* @addtogroup data_streams
|
||||
* @details This module define an abstract interface for generic data streams.
|
||||
* Note that no code is present, streams are just abstract interfaces
|
||||
* like structures, you should look at the systems as to a set of
|
||||
* abstract C++ classes (even if written in C). This system has the
|
||||
* advantage to make the access to streams independent from the
|
||||
* implementation logic.<br>
|
||||
* Note that no code is present, just abstract interfaces-like
|
||||
* structures, you should look at the system as to a set of
|
||||
* abstract C++ classes (even if written in C). This system
|
||||
* has then advantage to make the access to data streams
|
||||
* independent from the implementation logic.<br>
|
||||
* The stream interface can be used as base class for high level
|
||||
* object types such as files, sockets, serial ports, pipes etc.
|
||||
* @{
|
||||
|
|
|
|||
Loading…
Reference in New Issue