Function esp_idf_sys::nvs_set_blob

pub unsafe extern "C" fn nvs_set_blob(
    handle: nvs_handle_t,
    key: *const c_char,
    value: *const c_void,
    length: usize
) -> esp_err_t

@brief set variable length binary value for given key

This family of functions set value for the key, given its name. Note that actual storage will not be updated until nvs_commit function is called.

@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. @param[in] length length of binary value to set, in bytes; Maximum length is 508000 bytes or (97.6% of the partition size - 4000) bytes whichever is lower.

@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. - ESP_ERR_NVS_VALUE_TOO_LONG if the value is too long