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fatfs: added an API to format FAT on spiflash

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This commit is contained in:
Armando
2023-01-04 14:59:11 +08:00
parent 1bd8018a59
commit 4150bfb403
5 changed files with 292 additions and 83 deletions
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examples/storage/wear_levelling/main/wear_levelling_example_main.c
+77 -22
View File
@@ -17,6 +17,8 @@
#include "esp_vfs_fat.h"
#include "esp_system.h"
#define EXAMPLE_MAX_CHAR_SIZE 128
static const char *TAG = "example";
// Handle of the wear levelling library instance
@@ -25,6 +27,42 @@ static wl_handle_t s_wl_handle = WL_INVALID_HANDLE;
// Mount path for the partition
const char *base_path = "/spiflash";
static esp_err_t s_example_write_file(char *path, char *data)
{
ESP_LOGI(TAG, "Opening file");
FILE *f = fopen(path, "wb");
if (f == NULL) {
ESP_LOGE(TAG, "Failed to open file for writing");
return ESP_FAIL;
}
fprintf(f, data);
fclose(f);
ESP_LOGI(TAG, "File written");
return ESP_OK;
}
static esp_err_t s_example_read_file(char *path)
{
ESP_LOGI(TAG, "Reading file");
FILE *f = fopen(path, "rb");
if (f == NULL) {
ESP_LOGE(TAG, "Failed to open file for reading");
return ESP_FAIL;
}
char line[EXAMPLE_MAX_CHAR_SIZE];
fgets(line, sizeof(line), f);
fclose(f);
// strip newline
char *pos = strchr(line, '\n');
if (pos) {
*pos = '\0';
}
ESP_LOGI(TAG, "Read from file: '%s'", line);
return ESP_OK;
}
void app_main(void)
{
ESP_LOGI(TAG, "Mounting FAT filesystem");
@@ -40,32 +78,49 @@ void app_main(void)
ESP_LOGE(TAG, "Failed to mount FATFS (%s)", esp_err_to_name(err));
return;
}
ESP_LOGI(TAG, "Opening file");
FILE *f = fopen("/spiflash/hello.txt", "wb");
if (f == NULL) {
ESP_LOGE(TAG, "Failed to open file for writing");
return;
}
fprintf(f, "written using ESP-IDF %s\n", esp_get_idf_version());
fclose(f);
ESP_LOGI(TAG, "File written");
// Open file for reading
ESP_LOGI(TAG, "Reading file");
f = fopen("/spiflash/hello.txt", "rb");
if (f == NULL) {
ESP_LOGE(TAG, "Failed to open file for reading");
//Create file and write
char data[EXAMPLE_MAX_CHAR_SIZE];
snprintf(data, EXAMPLE_MAX_CHAR_SIZE, "%s %s\n", "hello world, from ESP-IDF", esp_get_idf_version());
err = s_example_write_file("/spiflash/hello.txt", data);
if (err != ESP_OK) {
return;
}
char line[128];
fgets(line, sizeof(line), f);
fclose(f);
// strip newline
char *pos = strchr(line, '\n');
if (pos) {
*pos = '\0';
//Open file for reading
err = s_example_read_file("/spiflash/hello.txt");
if (err != ESP_OK) {
return;
}
// Format FATFS
err = esp_vfs_fat_spiflash_format_rw_wl(base_path, "storage");
if (err != ESP_OK) {
ESP_LOGE(TAG, "Failed to format FATFS (%s)", esp_err_to_name(err));
return;
}
struct stat st;
if (stat("/spiflash/hello.txt", &st) == 0) {
ESP_LOGI(TAG, "file still exists");
return;
} else {
ESP_LOGI(TAG, "file doesnt exist, format done");
}
//Create file and write
memset(data, 0, EXAMPLE_MAX_CHAR_SIZE);
snprintf(data, EXAMPLE_MAX_CHAR_SIZE, "%s %s\n", "nihao shijie, from ESP-IDF", esp_get_idf_version());
err = s_example_write_file("/spiflash/nihao.txt", data);
if (err != ESP_OK) {
return;
}
//Open file for reading
err = s_example_read_file("/spiflash/nihao.txt");
if (err != ESP_OK) {
return;
}
ESP_LOGI(TAG, "Read from file: '%s'", line);
// Unmount FATFS
ESP_LOGI(TAG, "Unmounting FAT filesystem");
examples/storage/wear_levelling/pytest_wear_levelling_example.py
+8 -2
View File
@@ -1,4 +1,4 @@
# SPDX-FileCopyrightText: 2022 Espressif Systems (Shanghai) CO LTD
# SPDX-FileCopyrightText: 2022-2023 Espressif Systems (Shanghai) CO LTD
# SPDX-License-Identifier: Unlicense OR CC0-1.0
@@ -16,7 +16,13 @@ def test_wear_levelling_example(dut: Dut) -> None:
'example: Opening file',
'example: File written',
'example: Reading file',
re.compile(str.encode('example: Read from file: \'written using ESP-IDF \\S+\'')),
re.compile(str.encode('example: Read from file: \'hello world, from ESP-IDF \\S+\'')),
re.compile(str.encode('vfs_fat_spiflash: Formatting FATFS partition, allocation unit size=\\S+')),
'example: file doesnt exist, format done',
'example: Opening file',
'example: File written',
'example: Reading file',
re.compile(str.encode('example: Read from file: \'nihao shijie, from ESP-IDF \\S+\'')),
'example: Unmounting FAT filesystem',
'example: Done')