Lora Check RX before TX

#1

Is there a function to check that there is no other lora device transmitting before a TX?
This would be helpful to prevent data collisions

#2

Drop this into Google:

heltec lora 32 v3.2 carrier activity detection

#3

Oh yes google. Never thought of doing that
Just did. Still no joy.
So how about just the line of code for the function?

#4

isChannelBusy(int freq, int SF, int BW, int CR);

If only it were that simple!