Can we change BLE advertisement settings while ADV is ongoing, without stopping it?

[Uday Agarwal]

I would like to advertise two different sets of data in parallel, such that one ADV packet is ongoing (say, A), and then I switch to the other packet (say, B) with different ADV settings. I know that we can change ADV data on the fly, but I would like to change ADV settings (such as: A is doing non-connectable ADV with 10 second timeout, whereas B is doing connectable ADV with 2 second timeout).

Is it possible to change such ADV parameters on-the-fly, such that I don't have to stop and start ADV?

I am using SDK 11.0 with nRF51822, alongwith s130 softdevice.

[FormerMember]

Yes, you can change advertising data "on-the-fly". While your device is advertising, you can call sd_ble_gap_adv_data_set(..) and the advertising data will change.

[Uday Agarwal]

Thanks Kristin, but I was looking to change advertisement settings (such as ADV timeout, or ADV type), not data.

[FormerMember]

Yes, you can change adv timeout and adv type as well, since they are also parameters in sd_ble_gap_adv_data_set(..). If setting a new timeout, I would recommend you to test how that timeout is applied, if the timer is reset when setting a new advertising timeout or if the counting is continued. For testing, new advertising data can be set upon a button push. You can then measure the time it takes for the advertiser to time out.

[Uday Agarwal]

I see this format of the API you mentioned: *SVCALL(SD_BLE_GAP_ADV_DATA_SET, uint32_t, sd_ble_gap_adv_data_set(uint8_t const *p_data, uint8_t dlen, uint8_t const p_sr_data, uint8_t srdlen));

This is it, right? I am using SDK 11.0.0_89a8197. This is just data; no other parameters. Am I missing something?

[FormerMember]

Yes, advertising interval is set with sd_ble_gap_adv_start(..). You will therefore need to re-start advertising (sd_ble_gap_adv_start() ) to change the advertising timeout.

[Uday Agarwal]

Thanks Kristin.