Yes you are correct, the button is defined as an input but you are using it as an analog input, it will not change state with the resistor network attached Why not just sample the input as an analog and then invoke FuncButtonAnalogRead( int16-t AnalogIn) If you have too much code in the loop ( in yo...

The latest Wire.h at https://www.arduino.cc/en/reference/wire only has limited commands
Usually a failure to read is handled by external programming such as "if Value>0 then ok else fault"
You can also detect with available() which returns the no of bytes that can be read

Have a look at this
viewtopic.php?t=1075

Also when you select tools>board>ESP32 Arduino> your board type
then the IO configuration is done for you

Perhaps this will assist

If you set up a simple wire read from both sensors you can measure the period to read them both which will be well below your sample period. You can then sample the reading through then interrupt

Hi
What are you exactly trying to do by sampling through an interrupt? What is the purpose?

If you are going back to using 25 and 26 as inputs then you probably need to assign them with pinmode(25,INPUT_PULLUP) or similar

send null characters

Try this

https://www.youtube.com/watch?v=RlKMJknsNpo&t=145s