Thanks for your message.
I do not fear a jamming, I cannot stop it, but I just would like to be informed that it is happening, and maybe there is a way to do it easily
Yes, it’s easy to ping a wifi device. But for zigbee I didn’t find so far a way to do it.
The assumption is that during a jamming, the connection with the device will be completely lost. To be absolutely sure we would need a spectrum analyser, but at least it’s a hint that it could be a jamming. The sampling rate once per minute seems sufficient for me.
During a jamming, your wifi ping will not get late, you will not get any answer anymore at all
I tried something else, with a plug: switch on, read the state, switch off - if the read state is off then there could be a jamming… obviously not a good idea since the relay will wear in a few days - but a similar approach to set a parameter and read it after, without any mechanical action, maybe ?