mirror of
https://github.com/espressif/esp-idf.git
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93 lines
2.5 KiB
C
93 lines
2.5 KiB
C
/*
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* SPDX-FileCopyrightText: 2021-2024 Espressif Systems (Shanghai) CO LTD
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*
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* SPDX-License-Identifier: Unlicense OR CC0-1.0
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*/
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#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#include "esp_vfs.h"
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#include "esp_vfs_fat.h"
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#include "esp_err.h"
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#include "sdkconfig.h"
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static const char *TAG = "example";
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// Mount path for the partition
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const char *base_path = "/spiflash";
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void app_main(void)
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{
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// To mount device we need name of device partition, define base_path
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// and allow format partition in case if it is new one and was not formatted before
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const esp_vfs_fat_mount_config_t mount_config = {
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.max_files = 4,
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.format_if_mount_failed = false,
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.allocation_unit_size = CONFIG_WL_SECTOR_SIZE,
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.use_one_fat = false,
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};
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#if CONFIG_EXAMPLE_FATFS_MODE_READ_ONLY
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ESP_LOGI(TAG, "Mounting FAT filesystem in read-only mode");
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esp_err_t err = esp_vfs_fat_spiflash_mount_ro(base_path, "storage", &mount_config);
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#else
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ESP_LOGI(TAG, "Mounting FAT filesystem in read/write mode");
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static wl_handle_t wl_handle = WL_INVALID_HANDLE;
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esp_err_t err = esp_vfs_fat_spiflash_mount_rw_wl(base_path, "storage", &mount_config, &wl_handle);
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#endif
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if (err != ESP_OK) {
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ESP_LOGE(TAG, "Failed to mount FATFS (%s)", esp_err_to_name(err));
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return;
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}
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char line[128];
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FILE *f;
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char *pos;
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ESP_LOGI(TAG, "Reading file");
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const char *host_filename1 = "/spiflash/subdir/testlongfilenames.txt";
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struct stat info;
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struct tm timeinfo;
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char buffer[32];
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if(stat(host_filename1, &info) < 0){
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ESP_LOGE(TAG, "Failed to read file stats");
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return;
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}
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localtime_r(&info.st_mtime, &timeinfo);
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strftime(buffer, sizeof(buffer), "%Y-%m-%d", &timeinfo);
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ESP_LOGI(TAG, "The file '%s' was modified at date: %s", host_filename1, buffer);
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f = fopen(host_filename1, "rb");
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if (f == NULL) {
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ESP_LOGE(TAG, "Failed to open file for reading");
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return;
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}
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fgets(line, sizeof(line), f);
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fclose(f);
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// strip newline
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pos = strchr(line, '\n');
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if (pos) {
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*pos = '\0';
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}
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ESP_LOGI(TAG, "Read from file: '%s'", line);
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// Unmount FATFS
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ESP_LOGI(TAG, "Unmounting FAT filesystem");
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#if CONFIG_EXAMPLE_FATFS_MODE_READ_ONLY
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ESP_ERROR_CHECK(esp_vfs_fat_spiflash_unmount_ro(base_path, "storage"));
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#else
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ESP_ERROR_CHECK(esp_vfs_fat_spiflash_unmount_rw_wl(base_path, wl_handle));
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#endif
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ESP_LOGI(TAG, "Done");
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}
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