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