central still receives adv when connected

[JB21]

SDK v14.2.0  using s132

Our  central should only have one connection at a time, so I set

#define NRF_SDH_BLE_CENTRAL_LINK_COUNT 1

But when it is connected to a peripheral the central still scans and receives advertisement from others.

How can I prevent that?

Isn't the above define sufficient? 

[Martin Lesund]

Hi Jurgen,

So you are using the unmodified  BLE Blinky Client Application example on the central side and the BLE Blinky Application on the peripheral side.

How do you measure that the Central is still scanning for peripherals after the connection?
I do not see the same behaviour that you are describing, could you please describe more about your setup.

 

[JB21]

Hi Martin,

No, it is not unmodified.

I stripped most of the code since only one connection is needed.
BLE_GAP_EVT_ADV_REPORT event flashes a LED briefly.

When connected the LED still flashes as long as a 2nd peripheral advertises.

Also the power consumption indicates it is still scanning.

[JB21]

Hi Martin,

I finally found the reason. My code started scanning via a timer even when it was connected. So all blame is on me. Please excuse me for wasting your time. Thank you very much for your help !

[Martin Lesund]

Hi Jurgen,

No problem, I am glad that you solved the issue.