RE: nrf52832/nrf52840: Can frequency hopping be fully automated via PPI? At which point to set FREQUENCY?

Kenneth — Tue, 23 Mar 2021 12:22:10 GMT

Hi,

You can find radio states and receive sequence in the datasheet:
https://infocenter.nordicsemi.com/topic/ps_nrf52840/radio.html

1aC is the one you should do.

1b you should wait after READY event before start sample RSSI yes, and then wait for the RSSIEND event (~15us).

We don't have more information than stated in the radio chapter, typically registers are "latched" when a task is started. So any change after this will typically not have an effect until radio go back to idle and then task is started again.

BLE have typically some better SNR due to higher bandwidth, and this increase sensitivity. Also there are some other techniques in the radio that may improve sensitivity due to how the radio "search" for packets in the demodulated white noise that typically is there all the time, this feature may not be available on all configurable logical addresses.

Kenneth