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This software, with or without modification, must only be used with a * Nordic Semiconductor ASA integrated circuit. * * 5. Any software provided in binary form under this license must not be reverse * engineered, decompiled, modified and/or disassembled. * * THIS SOFTWARE IS PROVIDED BY NORDIC SEMICONDUCTOR ASA "AS IS" AND ANY EXPRESS * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES * OF MERCHANTABILITY, NONINFRINGEMENT, AND FITNESS FOR A PARTICULAR PURPOSE ARE * DISCLAIMED. IN NO EVENT SHALL NORDIC SEMICONDUCTOR ASA OR CONTRIBUTORS BE * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. * */ /** * @file iot_file.h * @brief IoT File abstraction API. */ #ifndef IOT_FILE_H__ #define IOT_FILE_H__ #include "iot_common.h" #include "iot_file_port.h" #ifdef __cplusplus extern "C" { #endif /** * @ingroup iot_sdk_common * @addtogroup iot_file IoT File * @brief IoT File abstraction definition. * @{ * @defgroup iot_file_abstraction IoT file abstraction * @{ * @brief Structures and public API definition. */ /** * @enum iot_file_evt_t * @brief List of events returned in callback for file ports with asynchronous operation * like open, read, write and close. */ typedef enum { IOT_FILE_OPENED, /**< Event indicates that file has been opened.*/ IOT_FILE_WRITE_COMPLETE, /**< Event indicates that single write operation has been completed.*/ IOT_FILE_READ_COMPLETE, /**< Event indicates that single read operation has been completed.*/ IOT_FILE_CLOSED, /**< Event indicates that file has been closed.*/ IOT_FILE_ERROR /**< Event indicates that file encountered a problem.*/ } iot_file_evt_t; /** * @brief IoT File user callback type definition. * * @param[in] p_file Reference to an IoT file instance. * @param[in] event Event structure describing what has happened. * @param[in] result Result code (should be NRF_SUCCESS for all events except errors). * @param[in] p_data Pointer to memory buffer. * @param[in] size Size of data stored in memory buffer. * * @retval None. */ typedef void (*iot_file_callback_t) (iot_file_t * p_file, iot_file_evt_t event, uint32_t result, void * p_data, uint32_t size); /** * @brief Function to open IoT file. Depending on port, it should allocate required buffer. * * @param[in] p_file Pointer to an IoT file instance. * @param[in] requested_size Maximum number of bytes to be read/written. * * @retval NRF_SUCCESS on successful execution of procedure, else an error code indicating reason * for failure. */ uint32_t iot_file_fopen(iot_file_t * p_file, uint32_t requested_size); /** * @brief Function to write data buffer into a file. * * @param[in] p_file Pointer to an IoT file instance. * @param[in] p_data Pointer to data block which will be written into the file. * @param[in] size Number of bytes to be written. * * @retval NRF_SUCCESS on successful execution of procedure, else an error code indicating reason * for failure. */ uint32_t iot_file_fwrite(iot_file_t * p_file, const void * p_data, uint32_t size); /** * @brief Function to read data buffer from file. * * @param[in] p_file Pointer to an IoT file instance. * @param[in] p_data Pointer to data block to be filled with read data. * @param[in] size Number of bytes to be read. * * @retval NRF_SUCCESS on successful execution of procedure, else an error code indicating reason * for failure. */ uint32_t iot_file_fread(iot_file_t * p_file, void * p_data, uint32_t size); /** * @brief Function to read current cursor position. * * @param[in] p_file Pointer to an IoT file instance. * @param[out] p_cursor Current value of a cursor. * * @retval NRF_SUCCESS on successful execution of procedure, else an error code indicating reason * for failure. */ uint32_t iot_file_ftell(iot_file_t * p_file, uint32_t * p_cursor); /** * @brief Function to set current cursor position. * * @param[in] p_file Pointer to an IoT file instance. * @param[in] cursor New cursor value. * * @retval NRF_SUCCESS on successful execution of procedure, else an error code indicating reason * for failure. */ uint32_t iot_file_fseek(iot_file_t * p_file, uint32_t cursor); /** * @brief Function to rewind file cursor. * * @param[in] p_file Pointer to an IoT file instance. * * @retval NRF_SUCCESS on successful execution of procedure, else an error code indicating reason * for failure. */ uint32_t iot_file_frewind(iot_file_t * p_file); /** * @brief Function to close IoT file. Depending on port, it should free used buffer. * * @param[in] p_file Pointer to an IoT file instance. * * @retval NRF_SUCCESS on successful execution of procedure, else an error code indicating reason * for failure. */ uint32_t iot_file_fclose(iot_file_t * p_file); #ifdef __cplusplus } #endif #endif // IOT_FILE_H__ /** @} */ /** @} */