Function esp_idf_sys::nvs_set_i8

pub unsafe extern "C" fn nvs_set_i8(
    handle: nvs_handle_t,
    key: *const c_char,
    value: i8,
) -> esp_err_t

@{*/ /** @brief set int8_t value for given key

Set value for the key, given its name. Note that the actual storage will not be updated until \c nvs_commit is called. Regardless whether key-value pair is created or updated, function always requires at least one nvs available entry. See \c nvs_get_stats . After create type of operation, the number of available entries is decreased by one. After update type of operation, the number of available entries remains the same.

@param[in] handle Handle obtained from nvs_open function. Handles that were opened read only cannot be used. @param[in] key Key name. Maximum length is (NVS_KEY_NAME_MAX_SIZE-1) characters. Shouldn’t be empty. @param[in] value The value to set.

@return - ESP_OK if value was set successfully - ESP_FAIL if there is an internal error; most likely due to corrupted NVS partition (only if NVS assertion checks are disabled) - ESP_ERR_NVS_INVALID_HANDLE if handle has been closed or is NULL - ESP_ERR_NVS_READ_ONLY if storage handle was opened as read only - ESP_ERR_NVS_INVALID_NAME if key name doesn’t satisfy constraints - ESP_ERR_NVS_NOT_ENOUGH_SPACE if there is not enough space in the underlying storage to save the value - ESP_ERR_NVS_REMOVE_FAILED if the value wasn’t updated because flash write operation has failed. The value was written however, and update will be finished after re-initialization of nvs, provided that flash operation doesn’t fail again.