update data in an advertising packet?

[Mikhail]

I use next init in static void advertising_init(bool bonding)

    ble_advdata_manuf_data_t        manuf_data; 
	manuf_data.company_identifier   = COMPANY_ID ;
	manuf_data.data.p_data          = &adv_data_batt_level[0];     
	manuf_data.data.size            = 1;

I can observe this manuf data info. How can I update this data for each adv packet? I f I just change adv_data_batt_level[0] data, I receive old data with first array initialized.

[endnode]

You can use ble_radio_notification module from SDK, it gives you callback before and after each radio Tx/Rx slot so if you do just advertisement it solves your problem. If you combine advertisement with parallel connections you will need to do more magic around, typically to use timer with interval close to adv. interval...

Here is an example how to make each adv. packet different.