FatFS
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Outline
#include <string.h>
#include "diskio_impl.h"
#include "ffconf.h"
#include "ff.h"
#include "esp_log.h"
#include "diskio_wl.h"
#include "wear_levelling.h"
#include "esp_compiler.h"
TAG
ff_wl_handles
ff_wl_initialize(BYTE)
ff_wl_status(BYTE)
ff_wl_read(BYTE, BYTE *, DWORD, UINT)
ff_wl_write(BYTE, const BYTE *, DWORD, UINT)
ff_wl_ioctl(BYTE, BYTE, void *)
ff_diskio_register_wl_partition(BYTE, wl_handle_t)
ff_diskio_get_pdrv_wl(wl_handle_t)
ff_diskio_clear_pdrv_wl(wl_handle_t)
Files
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SourceVuESP-IDF Framework and ExamplesFatFSdiskio/diskio_wl.c
 
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/* * SPDX-FileCopyrightText: 2015-2024 Espressif Systems (Shanghai) CO LTD * * SPDX-License-Identifier: Apache-2.0 *//* ... */ #include <string.h> #include "diskio_impl.h" #include "ffconf.h" #include "ff.h" #include "esp_log.h" #include "diskio_wl.h" #include "wear_levelling.h" #include "esp_compiler.h"8 includes static const char* TAG = "ff_diskio_spiflash"; wl_handle_t ff_wl_handles[FF_VOLUMES] = { [0 ... FF_VOLUMES - 1] = WL_INVALID_HANDLE }{...}; DSTATUS ff_wl_initialize (BYTE pdrv) { return 0; }{ ... } DSTATUS ff_wl_status (BYTE pdrv) { return 0; }{ ... } DRESULT ff_wl_read (BYTE pdrv, BYTE *buff, DWORD sector, UINT count) { ESP_LOGV(TAG, "ff_wl_read - pdrv=%i, sector=%i, count=%i", (unsigned int)pdrv, (unsigned int)sector, (unsigned int)count); wl_handle_t wl_handle = ff_wl_handles[pdrv]; assert(wl_handle + 1); esp_err_t err = wl_read(wl_handle, sector * wl_sector_size(wl_handle), buff, count * wl_sector_size(wl_handle)); if (unlikely(err != ESP_OK)) { ESP_LOGE(TAG, "wl_read failed (0x%x)", err); return RES_ERROR; }{...} return RES_OK; }{ ... } DRESULT ff_wl_write (BYTE pdrv, const BYTE *buff, DWORD sector, UINT count) { ESP_LOGV(TAG, "ff_wl_write - pdrv=%i, sector=%i, count=%i", (unsigned int)pdrv, (unsigned int)sector, (unsigned int)count); wl_handle_t wl_handle = ff_wl_handles[pdrv]; assert(wl_handle + 1); esp_err_t err = wl_erase_range(wl_handle, sector * wl_sector_size(wl_handle), count * wl_sector_size(wl_handle)); if (unlikely(err != ESP_OK)) { ESP_LOGE(TAG, "wl_erase_range failed (0x%x)", err); return RES_ERROR; }{...} err = wl_write(wl_handle, sector * wl_sector_size(wl_handle), buff, count * wl_sector_size(wl_handle)); if (unlikely(err != ESP_OK)) { ESP_LOGE(TAG, "wl_write failed (0x%x)", err); return RES_ERROR; }{...} return RES_OK; }{ ... } DRESULT ff_wl_ioctl (BYTE pdrv, BYTE cmd, void *buff) { wl_handle_t wl_handle = ff_wl_handles[pdrv]; ESP_LOGV(TAG, "ff_wl_ioctl: cmd=%i", cmd); assert(wl_handle + 1); switch (cmd) { case CTRL_SYNC: return RES_OK;... case GET_SECTOR_COUNT: *((DWORD *) buff) = wl_size(wl_handle) / wl_sector_size(wl_handle); return RES_OK;... case GET_SECTOR_SIZE: *((WORD *) buff) = wl_sector_size(wl_handle); return RES_OK;... case GET_BLOCK_SIZE: return RES_ERROR;... }{...} return RES_ERROR; }{ ... } esp_err_t ff_diskio_register_wl_partition(BYTE pdrv, wl_handle_t flash_handle) { if (pdrv >= FF_VOLUMES) { return ESP_ERR_INVALID_ARG; }{...} static const ff_diskio_impl_t wl_impl = { .init = &ff_wl_initialize, .status = &ff_wl_status, .read = &ff_wl_read, .write = &ff_wl_write, .ioctl = &ff_wl_ioctl }{...}; ff_wl_handles[pdrv] = flash_handle; ff_diskio_register(pdrv, &wl_impl); return ESP_OK; }{ ... } BYTE ff_diskio_get_pdrv_wl(wl_handle_t flash_handle) { for (int i = 0; i < FF_VOLUMES; i++) { if (flash_handle == ff_wl_handles[i]) { return i; }{...} }{...} return 0xff; }{ ... } void ff_diskio_clear_pdrv_wl(wl_handle_t flash_handle) { for (int i = 0; i < FF_VOLUMES; i++) { if (flash_handle == ff_wl_handles[i]) { ff_wl_handles[i] = WL_INVALID_HANDLE; }{...} }{...} }{ ... }
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