blackmagic-esp32-s2/main/nvs.c

88 lines
2.5 KiB
C

#include <nvs_flash.h>
#include <esp_log.h>
#include "nvs.h"
#define TAG "nvs"
#define NVS_STORE "nvs_storage"
void nvs_init(void) {
ESP_LOGI(TAG, "init " NVS_DEFAULT_PART_NAME);
esp_err_t ret = nvs_flash_init_partition(NVS_DEFAULT_PART_NAME);
if(ret == ESP_ERR_NVS_NO_FREE_PAGES || ret == ESP_ERR_NVS_NEW_VERSION_FOUND) {
ESP_LOGI(TAG, "erasing " NVS_DEFAULT_PART_NAME);
ESP_ERROR_CHECK(nvs_flash_erase_partition(NVS_DEFAULT_PART_NAME));
ret = nvs_flash_init_partition(NVS_DEFAULT_PART_NAME);
}
ESP_ERROR_CHECK(ret);
ESP_LOGI(TAG, "init " NVS_STORE);
ret = nvs_flash_init_partition(NVS_STORE);
if(ret == ESP_ERR_NVS_NO_FREE_PAGES || ret == ESP_ERR_NVS_NEW_VERSION_FOUND) {
ESP_LOGI(TAG, "erasing " NVS_STORE);
ESP_ERROR_CHECK(nvs_flash_erase_partition(NVS_STORE));
ret = nvs_flash_init_partition(NVS_STORE);
}
ESP_ERROR_CHECK(ret);
ESP_LOGI(TAG, "init done");
}
void nvs_erase(void) {
ESP_LOGI(TAG, "erasing " NVS_DEFAULT_PART_NAME);
ESP_ERROR_CHECK(nvs_flash_erase());
ESP_ERROR_CHECK(nvs_flash_init());
ESP_LOGI(TAG, "erasing " NVS_STORE);
ESP_ERROR_CHECK(nvs_flash_erase_partition(NVS_STORE));
ESP_ERROR_CHECK(nvs_flash_init_partition(NVS_STORE));
ESP_LOGI(TAG, "erasing done");
}
esp_err_t nvs_save_string(const char* key, const mstring_t* value) {
nvs_handle_t nvs_handle;
esp_err_t err;
do {
err = nvs_open_from_partition(NVS_STORE, "config", NVS_READWRITE, &nvs_handle);
if(err != ESP_OK) break;
err = nvs_set_str(nvs_handle, key, mstring_get_cstr(value));
if(err != ESP_OK) break;
err = nvs_commit(nvs_handle);
if(err != ESP_OK) break;
nvs_close(nvs_handle);
err = ESP_OK;
} while(0);
return err;
}
esp_err_t nvs_load_string(const char* key, mstring_t* value) {
nvs_handle_t nvs_handle;
esp_err_t err;
char* buffer = NULL;
do {
err = nvs_open_from_partition(NVS_STORE, "config", NVS_READONLY, &nvs_handle);
if(err != ESP_OK) break;
size_t required_size = 0;
err = nvs_get_str(nvs_handle, key, NULL, &required_size);
if(err != ESP_OK) break;
buffer = malloc(required_size + sizeof(uint32_t));
err = nvs_get_str(nvs_handle, key, buffer, &required_size);
if(err != ESP_OK) break;
mstring_set(value, buffer);
nvs_close(nvs_handle);
err = ESP_OK;
} while(0);
if(buffer != NULL) free(buffer);
return err;
}