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

Question

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?

Kenneth · Accepted Answer

It detects signal strength on channel (the actual modulation should not matter). You can in any case download nRF Connect for Desktop and run RSSI Viewer there if you want to test with wifi, bt, microwave oven or other sources. 
 You can sample RSSI at any time while in receive mode using the start RSSI task, and you can sample as many times as you want. 
 I personally don't think using CSMA is very efficient in the 2.4GHz band, since all packet transmissions are typically very short (in the 100-200us) range, I think it is more efficient to use frequency hopping to reduce risk of collisions.

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

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