I have a device that encodes its error status as a 16.5Hz pulse train of either 25% or 50% duty cycle. I was hoping to use the RMT peripheral to read this, rather than using interrupt driven timers to Measure the pulse width. But from my reading of the docs, RMT only raises an interrupt when the inc...

So I tried a function call
if(SerialBT.hasClient())...
and that seems to do exactly what I am looking for. LED comes on when I connect the android, and goes off when I disconnect.
Hope this helps.
Sadly, i don't seem to be able to find any documentation that describes what these functions do.
romeo

i asked almost exactly the same question a few days ago. Still no suggestions

romeo

I am something of a software newb trying to work up a thing that uses conventional BT on ESP32. I would like to know whether the ESP is or is not connected to a client. There are numerous examples on the web for monitoring connection and disconnection events, and yes, I can write a bit of software t...