Getting the RSSI of a connected device on nRF54L15 and nRF54H20. Or via advertising.

[Mikael123]

Hello, 

I am trying to get the RSSI value of a connected device on the nRF54L15, the same thing with our nrf54H20 device (nRF54H20 would be great if i can retrieve it via scanning an advertisement also). I tried this code but with no success. Could you recommend me which function to use, configs to enable, etc.

Best regards,

Mikael 

[Håkon Alseth]

Greeting Mikael,

 

nRF54H20 would be great if i can retrieve it via scanning an advertisement also

You should be able to get the rssi within the callback when starting scanning, like this:

https://github.com/nrfconnect/sdk-zephyr/blob/ncs-v3.2.0/samples/bluetooth/peripheral_gatt_write/src/peripheral_gatt_write.c#L59-L66

 

I am trying to get the RSSI value of a connected device on the nRF54L15

For a connected device, you can follow the sequence here to enable/fetch the RSSI per connection:

https://github.com/nrfconnect/sdk-zephyr/blob/ncs-v3.2.0/samples/bluetooth/hci_pwr_ctrl/src/main.c#L69

 

When you connect to the peripheral (built for nrf54l15dk/nrf54l15/cpuapp on ncs v3.2.0), it will print the RSSI over the logging interface:

Connected (0) - RSSI = -29
Adaptive Tx power selected = -20
Actual Tx Power: -20
Connection (0) TXP = -20
Connected (0) - RSSI = -31
Adaptive Tx power selected = -20
Actual Tx Power: -20
Connection (0) TXP = -20
Connected (0) - RSSI = -33
Adaptive Tx power selected = -20
Actual Tx Power: -20
Connection (0) TXP = -20
Connected (0) - RSSI = -32
Adaptive Tx power selected = -20
Actual Tx Power: -20
Connection (0) TXP = -20
Connected (0) - RSSI = -33
Adaptive Tx power selected = -20
Actual Tx Power: -20
Connection (0) TXP = -20
Connected (0) - RSSI = -33
Adaptive Tx power selected = -20
Actual Tx Power: -20
Connection (0) TXP = -20
Connected (0) - RSSI = -33
Adaptive Tx power selected = -20
Actual Tx Power: -20
Connection (0) TXP = -20
Connected (0) - RSSI = -33
Adaptive Tx power selected = -20
Actual Tx Power: -20
Connection (0) TXP = -20
Connected (0) - RSSI = -29
Adaptive Tx power selected = -20
Actual Tx Power: -20
Connection (0) TXP = -20
Connected (0) - RSSI = -30
Adaptive Tx power selected = -20
Actual Tx Power: -20
Connection (0) TXP = -20
Connected (0) - RSSI = -34
Adaptive Tx power selected = -20
Actual Tx Power: -20
Connection (0) TXP = -20
Connected (0) - RSSI = -46
Adaptive Tx power selected = -20
Actual Tx Power: -20
Connection (0) TXP = -20
Connected (0) - RSSI = -48
Adaptive Tx power selected = -20
Actual Tx Power: -20
Connection (0) TXP = -20
Connected (0) - RSSI = -40
Adaptive Tx power selected = -20
Actual Tx Power: -20
Connection (0) TXP = -20
Connected (0) - RSSI = -37
Adaptive Tx power selected = -20
Actual Tx Power: -20
Connection (0) TXP = -20
Connected (0) - RSSI = -37
Adaptive Tx power selected = -20
Actual Tx Power: -20
Connection (0) TXP = -20
Connected (0) - RSSI = -37
Adaptive Tx power selected = -20
Actual Tx Power: -20
Connection (0) TXP = -20
Connected (0) - RSSI = -41
Adaptive Tx power selected = -20
Actual Tx Power: -20
Connection (0) TXP = -20
Connected (0) - RSSI = -39
Adaptive Tx power selected = -20
Actual Tx Power: -20
Connection (0) TXP = -20
Connected (0) - RSSI = -40
Adaptive Tx power selected = -20
Actual Tx Power: -20
Connection (0) TXP = -20

 

Kind regards,

Håkon