vfs/vfs_fat_internal.h (FatFS)

/* * SPDX-FileCopyrightText: 2018-2024 Espressif Systems (Shanghai) CO LTD * * SPDX-License-Identifier: Apache-2.0 */ #pragma once #include "esp_vfs_fat.h" #include "diskio_impl.h" #include "esp_partition.h" #include "sdmmc_cmd.h" #include <sys/param.h> #include <stddef.h> typedef enum { FORMATTED_DURING_LAST_MOUNT = 1 << 0, // The FATFS partition was formatted during the last mount } vfs_fat_x_ctx_flags_t; typedef struct vfs_fat_spiflash_ctx_t { const esp_partition_t *partition; //The partition where the FAT is located bool by_label; //If the partition is mounted by label or not BYTE pdrv; //Drive number that is mounted FATFS *fs; //FAT structure pointer that is registered wl_handle_t wlhandle; //WL handle esp_vfs_fat_mount_config_t mount_config; //Mount configuration vfs_fat_x_ctx_flags_t flags; //Flags } vfs_fat_spiflash_ctx_t; typedef struct vfs_fat_sd_ctx_t { BYTE pdrv; //Drive number that is mounted esp_vfs_fat_mount_config_t mount_config; //Mount configuration FATFS *fs; //FAT structure pointer that is registered sdmmc_card_t *card; //Card info char *base_path; //Path where partition is registered vfs_fat_x_ctx_flags_t flags; //Flags } vfs_fat_sd_ctx_t; static inline size_t esp_vfs_fat_get_allocation_unit_size( size_t sector_size, size_t requested_size) { size_t alloc_unit_size = requested_size; const size_t max_sectors_per_cylinder = 128; const size_t max_size = sector_size * max_sectors_per_cylinder; alloc_unit_size = MAX(alloc_unit_size, sector_size); alloc_unit_size = MIN(alloc_unit_size, max_size); return alloc_unit_size; } vfs_fat_spiflash_ctx_t* get_vfs_fat_spiflash_ctx(wl_handle_t wlhandle); vfs_fat_sd_ctx_t* get_vfs_fat_get_sd_ctx(const sdmmc_card_t *card);