How often does rssisample register get updated

RE: How often does rssisample register get updated

Joakim Jakobsen — Tue, 23 Jan 2018 10:03:17 GMT

Oh, I think I misunderstood what you were looking for. Glad you found out.
Best regards.

RE: How often does rssisample register get updated

nordicdev — Mon, 22 Jan 2018 16:30:28 GMT

Found from devzone.nordicsemi.com/.../ that the update rate for RSSISAMPLE register is the higher end of the connection interval. Sorry for the redundant question.

RE: How often does rssisample register get updated

Joakim Jakobsen — Mon, 22 Jan 2018 15:16:17 GMT

Hi Nordicdev.

Yes, you are correct. When calling the sd_ble_gap_rssi_start(), you will start reporting the received signal strength to the application.
A new event is reported whenever the RSSI value changes, until sd_ble_gap_rssi_stop() is called.

If you take a look at the;

uint32_t sd_ble_gap_rssi_start( 	uint16_t  	conn_handle,
		                            uint8_t  	threshold_dbm,
		                            uint8_t  	skip_count 
	)

You can see the threshhold_dbm parameter. That will define how big the minimum change in rssi have to be before the BLE_GAP_EVT_RSSI_CHANGED event is triggered.

And then you can use the sd_ble_gap_rssi_get() function to get the rssi for the last connection event.

Best regards,
Joakim.