ESP32 Forum

Hello.

I am trying to make use of the PCNT module, in my code I have two libraries that each use PCNT, they work just fine when I test them separated but once put into the same sketch one of the libraries stop working.

Is there any known issues with using driver/pulse_cnt.h?

FYI, I am using an esp32-s3 and all in all my sketch is trying to utilize 3 of 4 pcnt units.

The first library is a publicly available library called RotaryEncoderPCNT

Regards

I have used the RotaryEncoderPCNT library for reading a QEI encoder module without problems
what is the other library?

could you implement a program using the two libraries which demonstrates the problem?

The linked library is properly keeping track of the units used. Perhaps the other one isn't. Try switching the order of initialization.

I think it has something to do with keeping track of which units that are available or not, in the end I solved this by taking that rotary encoder library code and combining it with my own code. It is a really messy solution but at least everything works when I set up everything from within a single class instance.