How to evaluate a channel if is clear in property in NRF528 serials

[LeoXie]

Dear,

    How to evaluate a channel if is clear in property in NRF528 serials? e.g. there are ED and CCA in 802.15.4 standard, how to implement CSMA in NRF52810?

[LeoXie]

I mean... I don't want inplemente 802.15.4 in NRF52810, I just wanna add a function that kinda like CSMA. 

[Kenneth]

I believe this is explained here;
https://infocenter.nordicsemi.com/topic/ps_nrf52833/radio.html#ieee802154_ed

Best regards,
Kenneth

[LeoXie]

Dear Kenneth,

    the platform that I am using is NRF52810, so there are no ED module inside

[Kenneth]

Ah, then the only option is to trigger the RSSI_START task while in receive mode:
https://infocenter.nordicsemi.com/topic/ps_nrf52810/radio.html#rssi

Best regards,
Kenneth

[LeoXie]

Dear Kenneth,

    thank you, does RSSI detection can detect all kind of protocol carrier? e.g. there ara wifi, bt, zigbee and others share the one channel, how can I estimate if it could send packages? 

   what is NRF52810 RSSI detection theory? does it can get RSSI value after received a packge or just sensed carrier in the air?

   if it's trying to estimate if is the channel clean enough for a while, should I triggle RSSI_START continuously?