diskio/diskio_impl.h (FatFS)

// Copyright 2017-2019 Espressif Systems (Shanghai) PTE LTD // // Licensed under the Apache License, Version 2.0 (the "License"); // you may not use this file except in compliance with the License. // You may obtain a copy of the License at // // http://www.apache.org/licenses/LICENSE-2.0 // // Unless required by applicable law or agreed to in writing, software // distributed under the License is distributed on an "AS IS" BASIS, // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. // See the License for the specific language governing permissions and // limitations under the License. #pragma once #ifdef __cplusplus extern "C" { #endif #include <stdint.h> typedef unsigned int UINT; typedef unsigned char BYTE; typedef uint32_t DWORD; #define FF_DRV_NOT_USED 0xFF #include "diskio.h" #include "esp_err.h" /** * Structure of pointers to disk IO driver functions. * * See FatFs documentation for details about these functions */ typedef struct { DSTATUS (*init) (unsigned char pdrv); /*!< disk initialization function */ DSTATUS (*status) (unsigned char pdrv); /*!< disk status check function */ DRESULT (*read) (unsigned char pdrv, unsigned char* buff, uint32_t sector, unsigned count); /*!< sector read function */ DRESULT (*write) (unsigned char pdrv, const unsigned char* buff, uint32_t sector, unsigned count); /*!< sector write function */ DRESULT (*ioctl) (unsigned char pdrv, unsigned char cmd, void* buff); /*!< function to get info about disk and do some misc operations */ } ff_diskio_impl_t; /** * Register or unregister diskio driver for given drive number. * * When FATFS library calls one of disk_xxx functions for driver number pdrv, * corresponding function in discio_impl for given pdrv will be called. * * @param pdrv drive number * @param discio_impl pointer to ff_diskio_impl_t structure with diskio functions * or NULL to unregister and free previously registered drive */ void ff_diskio_register(BYTE pdrv, const ff_diskio_impl_t* discio_impl); #define ff_diskio_unregister(pdrv_) ff_diskio_register(pdrv_, NULL) /** * Get next available drive number * * @param out_pdrv pointer to the byte to set if successful * * @return ESP_OK on success * ESP_ERR_NOT_FOUND if all drives are attached */ esp_err_t ff_diskio_get_drive(BYTE* out_pdrv); #ifdef __cplusplus } #endif