Reporting rssi from each connection in multilink_central SDK15.2

[SRall]

Hello!

Trying to capture and print the rssi values for all simultaneous connections from the multi_central example. I'm using an nrf52840 SoC that will be connected to four (4) additional 840s running the peripheral Nordic_Blinky examples. The goal is to connect the 4 peripherals to the multi-link_central and display the rssi from each connection at once. 

So far I've been able to report an rssi from just one connection (via a BLE_GAP_RSSI_CHANGED event and sd_ble_gap_rssi_start and _get functions in the ble_evt_handler). 

I haven't seen a whole lot on the forums about how to differentiate the connections as it pertains to the rssi. The peripherals are to be placed at varying distances from the central and it will be important to evaluate the signal strengths comparatively between them. Perhaps there might be a resource or example that comes close to this? 

Anyway, your time is much appreciated. 

Thank you, 

Sam

[Jørgen Holmefjord]

Hi,

I just tested this and it seems like you can call the softdevice function to start RSSI measurement for each connection handle that you want to get RSSI reports for. You can then identify which connection handle that reported the RSSI change in the event handler.

Best regards,
Jørgen

[Jørgen Holmefjord]

I tested with the exact code from the post you linked. Added the lines in ble_evt_handler() in ble_app_multilink_central example.