esp-idf/components/fatfs/vfs/vfs_fat_spiflash.c

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/*
* SPDX-FileCopyrightText: 2015-2022 Espressif Systems (Shanghai) CO LTD
*
* SPDX-License-Identifier: Apache-2.0
*/
#include <stdlib.h>
#include <string.h>
#include "esp_log.h"
#include "esp_vfs.h"
#include "esp_vfs_fat.h"
#include "vfs_fat_internal.h"
#include "diskio_impl.h"
#include "diskio_rawflash.h"
#include "wear_levelling.h"
#include "diskio_wl.h"
static const char *TAG = "vfs_fat_spiflash";
esp_err_t esp_vfs_fat_spiflash_mount(const char* base_path,
const char* partition_label,
const esp_vfs_fat_mount_config_t* mount_config,
wl_handle_t* wl_handle)
{
esp_err_t result = ESP_OK;
const size_t workbuf_size = 4096;
void *workbuf = NULL;
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esp_partition_subtype_t subtype = partition_label ?
ESP_PARTITION_SUBTYPE_ANY : ESP_PARTITION_SUBTYPE_DATA_FAT;
const esp_partition_t *data_partition = esp_partition_find_first(ESP_PARTITION_TYPE_DATA,
subtype, partition_label);
if (data_partition == NULL) {
ESP_LOGE(TAG, "Failed to find FATFS partition (type='data', subtype='fat', partition_label='%s'). Check the partition table.", partition_label);
return ESP_ERR_NOT_FOUND;
}
result = wl_mount(data_partition, wl_handle);
if (result != ESP_OK) {
ESP_LOGE(TAG, "failed to mount wear levelling layer. result = %i", result);
return result;
}
// connect driver to FATFS
BYTE pdrv = 0xFF;
if (ff_diskio_get_drive(&pdrv) != ESP_OK) {
ESP_LOGD(TAG, "the maximum count of volumes is already mounted");
return ESP_ERR_NO_MEM;
}
ESP_LOGD(TAG, "using pdrv=%i", pdrv);
char drv[3] = {(char)('0' + pdrv), ':', 0};
result = ff_diskio_register_wl_partition(pdrv, *wl_handle);
if (result != ESP_OK) {
ESP_LOGE(TAG, "ff_diskio_register_wl_partition failed pdrv=%i, error - 0x(%x)", pdrv, result);
goto fail;
}
FATFS *fs;
result = esp_vfs_fat_register(base_path, drv, mount_config->max_files, &fs);
if (result == ESP_ERR_INVALID_STATE) {
// it's okay, already registered with VFS
} else if (result != ESP_OK) {
ESP_LOGD(TAG, "esp_vfs_fat_register failed 0x(%x)", result);
goto fail;
}
// Try to mount partition
FRESULT fresult = f_mount(fs, drv, 1);
if (fresult != FR_OK) {
ESP_LOGW(TAG, "f_mount failed (%d)", fresult);
if (!((fresult == FR_NO_FILESYSTEM || fresult == FR_INT_ERR)
&& mount_config->format_if_mount_failed)) {
result = ESP_FAIL;
goto fail;
}
workbuf = ff_memalloc(workbuf_size);
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if (workbuf == NULL) {
result = ESP_ERR_NO_MEM;
goto fail;
}
size_t alloc_unit_size = esp_vfs_fat_get_allocation_unit_size(
CONFIG_WL_SECTOR_SIZE,
mount_config->allocation_unit_size);
ESP_LOGI(TAG, "Formatting FATFS partition, allocation unit size=%d", alloc_unit_size);
const MKFS_PARM opt = {(BYTE)(FM_ANY | FM_SFD), 0, 0, 0, alloc_unit_size};
fresult = f_mkfs(drv, &opt, workbuf, workbuf_size);
if (fresult != FR_OK) {
result = ESP_FAIL;
ESP_LOGE(TAG, "f_mkfs failed (%d)", fresult);
goto fail;
}
free(workbuf);
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workbuf = NULL;
ESP_LOGI(TAG, "Mounting again");
fresult = f_mount(fs, drv, 0);
if (fresult != FR_OK) {
result = ESP_FAIL;
ESP_LOGE(TAG, "f_mount failed after formatting (%d)", fresult);
goto fail;
}
}
return ESP_OK;
fail:
free(workbuf);
esp_vfs_fat_unregister_path(base_path);
ff_diskio_unregister(pdrv);
return result;
}
esp_err_t esp_vfs_fat_spiflash_unmount(const char *base_path, wl_handle_t wl_handle)
{
BYTE pdrv = ff_diskio_get_pdrv_wl(wl_handle);
if (pdrv == 0xff) {
return ESP_ERR_INVALID_STATE;
}
char drv[3] = {(char)('0' + pdrv), ':', 0};
f_mount(0, drv, 0);
ff_diskio_unregister(pdrv);
ff_diskio_clear_pdrv_wl(wl_handle);
// release partition driver
esp_err_t err_drv = wl_unmount(wl_handle);
esp_err_t err = esp_vfs_fat_unregister_path(base_path);
if (err == ESP_OK) err = err_drv;
return err;
}
esp_err_t esp_vfs_fat_rawflash_mount(const char* base_path,
const char* partition_label,
const esp_vfs_fat_mount_config_t* mount_config)
{
esp_err_t result = ESP_OK;
const esp_partition_t *data_partition = esp_partition_find_first(ESP_PARTITION_TYPE_DATA,
ESP_PARTITION_SUBTYPE_DATA_FAT, partition_label);
if (data_partition == NULL) {
ESP_LOGE(TAG, "Failed to find FATFS partition (type='data', subtype='fat', partition_label='%s'). Check the partition table.", partition_label);
return ESP_ERR_NOT_FOUND;
}
// connect driver to FATFS
BYTE pdrv = 0xFF;
if (ff_diskio_get_drive(&pdrv) != ESP_OK) {
ESP_LOGD(TAG, "the maximum count of volumes is already mounted");
return ESP_ERR_NO_MEM;
}
ESP_LOGD(TAG, "using pdrv=%i", pdrv);
char drv[3] = {(char)('0' + pdrv), ':', 0};
result = ff_diskio_register_raw_partition(pdrv, data_partition);
if (result != ESP_OK) {
ESP_LOGE(TAG, "ff_diskio_register_raw_partition failed pdrv=%i, error - 0x(%x)", pdrv, result);
goto fail;
}
FATFS *fs;
result = esp_vfs_fat_register(base_path, drv, mount_config->max_files, &fs);
if (result == ESP_ERR_INVALID_STATE) {
// it's okay, already registered with VFS
} else if (result != ESP_OK) {
ESP_LOGD(TAG, "esp_vfs_fat_register failed 0x(%x)", result);
goto fail;
}
// Try to mount partition
FRESULT fresult = f_mount(fs, drv, 1);
if (fresult != FR_OK) {
ESP_LOGW(TAG, "f_mount failed (%d)", fresult);
result = ESP_FAIL;
goto fail;
}
return ESP_OK;
fail:
esp_vfs_fat_unregister_path(base_path);
ff_diskio_unregister(pdrv);
return result;
}
esp_err_t esp_vfs_fat_rawflash_unmount(const char *base_path, const char* partition_label)
{
const esp_partition_t *data_partition = esp_partition_find_first(ESP_PARTITION_TYPE_DATA,
ESP_PARTITION_SUBTYPE_DATA_FAT, partition_label);
if (data_partition == NULL) {
ESP_LOGE(TAG, "Failed to find FATFS partition (type='data', subtype='fat', partition_label='%s'). Check the partition table.", partition_label);
return ESP_ERR_NOT_FOUND;
}
BYTE pdrv = ff_diskio_get_pdrv_raw(data_partition);
if (pdrv == 0xff) {
return ESP_ERR_INVALID_STATE;
}
char drv[3] = {(char)('0' + pdrv), ':', 0};
f_mount(0, drv, 0);
ff_diskio_unregister(pdrv);
esp_err_t err = esp_vfs_fat_unregister_path(base_path);
return err;
}