NRF52 SDK16 multi-link central does not reconnect to peripherals

[KasunR]

Hi, I am developing a multi-link central using NRF52832 and SDK 16. I have implemented the scanning part and NRF_BLE_SCAN_SCAN_DURATION = 0. I am using address filter for scanning and it works as well.
When I power both central and peripheral, central connect with the peripheral.
When both are connected, if i remove power from central and re apply power, central connect with the peripheral.
When both are connected, if i remove power from peripheral and re apply power, central does not connect with the peripheral.

Any suggestions to fix the issue?
Thanks

[KasunR]

Hi, I called nrf_ble_scan_start inside BLE_GAP_EVT_DISCONNECTED and it worked. Now central connects with the peripheral. But why it stops scannig?

[Karl Ylvisaker]

Hi,

KasunR said:

I called nrf_ble_scan_start inside BLE_GAP_EVT_DISCONNECTED and it worked. Now central connects with the peripheral.

I am glad to hear that it resolved your issue!

KasunR said:

But why it stops scannig?

I guess this might be configured in your ble_evt_handler as part of the _CONNECTED event.
Could you check if scanning is stopped when a connection is established?

Best regards,
Karl 

[KasunR]

I checked. I am not calling the api to stop scanning any where in the code. Does nrf library stops scanning once a connection been made? 

[Karl Ylvisaker]

All right, how do you know that it stops scanning when you make a connection, how have you determined this?
Are you using one of the examples provided in the SDK as basis for your application?

Perhaps you could share the code, so that I may take a look?

Best regards,
Karl

[KasunR]

I sniff the ble packets as you suggested and it seems scan requests are not going from the central once it connects to a peripheral. And also i saw nrf developers have restarted scanning i lot of examples provided. Any how I got it working. Thanks for your suggestions. :)