nRF52832 Measuring RSSI

[George555]

I'm trying to understand how RSSI measurement works.

According to datasheet if I understood correctly I have to issue a "TASKS_RSSISTART" command and wait for the corresponding flag to finish and get the event of "EVENTS_RSSIEND"

Then I read the "RSSISAMPLE" register and get an int value of 0...127.

My question is: Can the chip perform RSSI measurement and get the received packet at the same time? Or a packet is wasted during RSSI measurement?

Is there any other restrictions in the radio when a receiver performs RSSI measurement?

What I want to do is getting the RSSI value for each packet in the receiver.

[Marjeris Romero]

Hi,

Yes, the signal measurements in the radio will take place whenever TASKS_RSSISTART is triggered, either on a packet or outside of a packet.

You can also use a shortcut between ADDRESS event and RSSISTART using ADDRESS_RSSISTART short.

But if you are using Bluetooth Low energy in your application you need to use the Softdevice, then you can use softdevice calls sd_ble_gap_rssi_start() and sd_ble_gap_rssi_get() to get the the received signal strength for the last connection event.

Best regards,

Marjeris

[George555]

What do you mean "outside of a packet"?

Is any packet lost every time the TASKS_RSSISTART is triggered?