How to implement Scanning and Advertising at the time using s132 on nrf52832 with SDK15.0

[liu]

Hello,

Now i want to implement Scanning and Advertising at the time using s132 on nrf52832 with SDK15.0.

I use a app_timer of 10ms to realize advertising every 10ms.

And at the same time, i want NRF52832 to scan adv packets in surrounding.

After starting adv every 10ms, i turn on scan function.

But sometimes NRF52832 cann't get adv packets. Maybe i think i cann't use scan funtion directly.

So i want to know how i can realize this function.

Thanks.

Liu.

[liu]

sorry, it should be “at the same time ” in title.

[Simonr]

Hi Liu

I am sorry, but you can't scan and advertise simultaneously. You will have to switch between the two, disabling and reinitializing scanning/advertising. Also advertising every 10ms is way too short. The BLE stack specifies that the advertising interval must be between 20ms to 10.24 seconds.

Best regards,

Simon

[liu]

hello,

Simonr.

Thanks for your reply.

"I use a app_timer of 10ms to realize advertising every 10ms. "

Actually, i mean i start a 10ms app_timer, after timeout_handler comes,i stop adv and restart it every time.

Also, i can realize 10ms adv period. And i test it is right.

But ble scanning is working wrong at the same time.

So i want to know how i can solve it? Using timeslot mode? (where to get examples?)

this question and answer show "It is possible to do scanning and advertising at the same time with nRF51822/S130 as well, ....",as  Jørgen Holmefjord 6 months ago said.   ↓↓↓

https://devzone.nordicsemi.com/f/nordic-q-a/40016/scanning-and-advertising-at-the-same-time-using-s130-on-nrf51822/156759#156759

Thanks.

[Simonr]

Hi 

Sorry, I was too quick to answer, don't know why I thought it wasn't possible... 

The Experimental: LE Secure Connections Multirole Example supports concurrent scanning and advertising. However I still think 10ms is too short of an advertising period, and I think that's the reason you are not seeing every advertising packet.

Best regards,

Simon