2. NVS中的概念 2.1. partition 分区 这里的Flash分区与分区表中所提到的Flash分区是相同的概念。 所以在希望调用nvs_open_from_partition()进行初始化时,需要先在分区表中设置对应名称的Flash分区。 在使用默认分区的情况下,可以直接使用nvs_open()进行初始化。 2.2. namespace 命名空间 为了减少不同组件之间键名...
命名空间的名称在调用 nvs_open() 或 nvs_open_from_partition 中指定,调用后将返回一个不透明句柄,用于后续调用 nvs_get_*、nvs_set_* 和 nvs_commit 函数。这样,一个句柄关联一个命名空间,键名便不会与其他命名空间中相同键名冲突。请注意,不同 NVS 分区中具有相同名称的命名空间将被视为不同的命名空间。
* - other error codes from the underlying storage driver*/esp_err_t nvs_open(constchar* name, nvs_open_mode open_mode, nvs_handle *out_handle); /** * @brief Open non-volatile storage with a given namespace from specified partition * * The behaviour is same as nvs_open() API. Howe...
写入 voidNvsWriteDataToFlash(void){nvs_handle handle;// 写入一个整形数据,一个字符串,WIFI信息以及版本信息staticconstchar*NVS_CUSTOMER="customer data";staticconstchar*DATA2="String";staticconstchar*DATA3="blob_wifi";staticconstchar*DATA4="blob_version";// 要写入的字符串charstr_for_store[32]=...
nvs_open function, seems like it erases previously provisioned certificate/key, as I'm getting an error that they could not be loaded during MQTT connection process. The example comes with partitions.csv: Code:Select all #ESP-IDF Partition Table#Name, Type, SubType, Offset, Size, Flagsesp_...
esp_err_terr = nvs_open("storage", NVS_READONLY, &my_handle); it return ESP_ERR_NVS_NOT_FOUND. if i flash an example from $IDF_PATH/examples/storage/nvs... the example works, and than if i flash my project it starts working again. ...
extern "C" esp_err_t nvs_open_from_partition(const char *part_name, const char* namespace_name, nvs_open_mode_t open_mode, nvs_handle_t *out_handle) { esp_err_t lock_result = Lock::init(); if (lock_result != ESP_OK) { return lock_result; } Lock lock; ESP_LOGD(TAG, "...
D (1354) phy_init: loading PHY init data from application binary D (1364) nvs: nvs_open_from_partition phy 0 D (1364) phy_init: esp_phy_load_cal_data_from_nvs: failed to open NVS namespace (0x1102) W (1374) phy_init: failed to load RF calibration data (0x1102), falling back...
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...
handle 从nvs_open函数获取的句柄。 key 键,最大长度为 (NVS_KEY_NAME_MAX_SIZE-1) 个字符,不应为空。 out_value : 指向输出值的指针。对于nvs_get_str和nvs_get_blob可能是 NULL,在这种情况下,所需的长度将在长度参数中返回。 (3) 返回