NRF52840 802.15.4 CCA question

[Libertas]

I would appreciate your feedback on the 802.15.4 CCA implementation on NRF52840.

1. Is it possible to perform CCA without disrupting the RF reception?

2. If it is possible, I need to invoke NRF_RADIO_TASK_CCASTART on "RX" state. I assume I can use NRF_RADIO_SHORT_CCAIDLE_STOP_MASK to transition from RX to RXIDLE.

But can I combine NRF_RADIO_SHORT_CCAIDLE_TXEN_MASK to automatically transition from RX_IDLE to TX_IDLE?

3. I know I can instead handle CCAIDLE  from IRQ handler but I am wondering if it can be more automated?

Thanks

Q

[Libertas]

Here are some updates. I did trigger NRF_RADIO_TASK_CCASTART while in RX state. And it seems to work very well. I know that because if I lower the threshold I got CCA busy while I can still receive packets.

Also looking at NRF52840 product specification there is no mention of any potential conflict between CCA and RX.