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Code: nvs_blob.c Select all

static const char* NvsESP_info = "espInfo";

static const char* TAG = "eep";

char Serial_Number[10];

/******************************************************

 *               Function Definitions

 ******************************************************/

uint8_t device_settings_eep_get(void)

{

    uint8_t result = NULL;

    memcpy(Serial_Number, "0000-0000", sizeof(Serial_Number));	// Reset Serial Number



	// Open

	nvs_handle my_handle;

	nvs_open("nvs", NVS_READWRITE, &my_handle);



	// Read

    size_t required_size = sizeof(Serial_Number);

    // Read Serial Number from nvs partition

    nvs_get_str(my_handle, NvsESP_info, &Serial_Number[0], &required_size);



	// Close

	nvs_close(my_handle);



	// Compare Serial Number from nvs partition with Default (1234-1234)

	if(!memcmp(&Serial_Number[0], "1234-1234", 9))

	{

		result = 1;

		ESP_LOGI(TAG, "Serial Number:'%s'", &Serial_Number[0]);

	}



    return result;

}



void device_settings_eep_set(const char *key, char *value)

{

    nvs_handle my_handle;



    // Open

    nvs_open("nvs", NVS_READWRITE, &my_handle);



    // Write

    nvs_set_str(my_handle, key, value);



    // Commit

    nvs_commit(my_handle);



    // Close

    nvs_close(my_handle);

}





void device_settings_default_set(void)

{

	ESP_LOGI(TAG, "Setting Defaults ...");



	nvs_flash_erase();

	nvs_flash_init();



	memcpy(Serial_Number, "1234-1234", sizeof(Serial_Number));



	device_settings_eep_set(NvsESP_info,(char*)&Serial_Number);

}



void Init_nvs_partition(void)

{

	uint8_t value;

	nvs_flash_init();

	value = device_settings_eep_get();



	switch (value)

	{

		case 1:

			ESP_LOGE(TAG, "ESP nvs was successfully initialized!");

			break;

        default :

        	ESP_LOGE(TAG, "Error, NO data!");

        	device_settings_default_set();

        	device_settings_eep_get();

        	break;

	}

}

Code: Select all

    device_settings_eep_set(NvsESP_info, --> (char*)&Serial_Number <-- );