108 lines
4 KiB
C
108 lines
4 KiB
C
/**
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* CANopen data storage object for Linux
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*
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* @file CO_storageLinux.h
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* @ingroup CO_storageLinux
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* @author Janez Paternoster
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* @copyright 2021 Janez Paternoster
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*
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* This file is part of CANopenNode, an opensource CANopen Stack.
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* Project home page is <https://github.com/CANopenNode/CANopenNode>.
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* For more information on CANopen see <http://www.can-cia.org/>.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef CO_STORAGE_LINUX_H
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#define CO_STORAGE_LINUX_H
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#include "storage/CO_storage.h"
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#if ((CO_CONFIG_STORAGE) & CO_CONFIG_STORAGE_ENABLE) || defined CO_DOXYGEN
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#ifdef __cplusplus
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extern "C" {
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#endif
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/**
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* @defgroup CO_storageLinux Data storage with Linux
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* Data initialize, store and restore functions with Linux.
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*
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* @ingroup CO_socketCAN
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* @{
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*
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* See also @ref CO_storage.
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*/
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/**
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* Initialize data storage object (Linux specific)
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*
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* This function should be called by application after the program startup,
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* before @ref CO_CANopenInit(). This function initializes storage object,
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* OD extensions on objects 1010 and 1011, reads data from file, verifies them
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* and writes data to addresses specified inside entries. This function
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* internally calls @ref CO_storage_init().
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*
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* @param storage This object will be initialized. It must be defined by
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* application and must exist permanently.
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* @param CANmodule CAN device, used for @ref CO_LOCK_OD() macro.
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* @param OD_1010_StoreParameters OD entry for 0x1010 -"Store parameters".
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* Entry is optional, may be NULL.
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* @param OD_1011_RestoreDefaultParam OD entry for 0x1011 -"Restore default
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* parameters". Entry is optional, may be NULL.
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* @param entries Pointer to array of storage entries, see @ref CO_storage_init.
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* @param entriesCount Count of storage entries
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* @param [out] storageInitError If function returns CO_ERROR_DATA_CORRUPT,
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* then this variable contains a bit mask from subIndexOD values, where data
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* was not properly initialized. If other error, then this variable contains
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* index or erroneous entry.
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*
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* @return CO_ERROR_NO, CO_ERROR_DATA_CORRUPT if data can not be initialized,
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* CO_ERROR_ILLEGAL_ARGUMENT or CO_ERROR_OUT_OF_MEMORY.
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*/
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CO_ReturnError_t CO_storageLinux_init(CO_storage_t *storage,
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CO_CANmodule_t *CANmodule,
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OD_entry_t *OD_1010_StoreParameters,
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OD_entry_t *OD_1011_RestoreDefaultParam,
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CO_storage_entry_t *entries,
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uint8_t entriesCount,
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uint32_t *storageInitError);
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/**
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* Automatically save data if differs from previous call.
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*
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* Should be called cyclically by program. Each interval it verifies, if crc
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* checksum of data differs from previous checksum. If it does, data are saved
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* into pre-opened file.
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*
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* @param storage This object
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* @param closeFiles If true, then all files will be closed. Use on end of the
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* program.
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*
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* @return 0 on success or bit mask from subIndexOD values, where data was not
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* able to be saved.
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*/
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uint32_t CO_storageLinux_auto_process(CO_storage_t *storage,
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bool_t closeFiles);
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/** @} */ /* CO_storageLinux */
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#ifdef __cplusplus
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}
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#endif /* __cplusplus */
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#endif /* (CO_CONFIG_STORAGE) & CO_CONFIG_STORAGE_ENABLE */
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#endif /* CO_STORAGE_LINUX_H */
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