Hi anitech_pro,

I have the same issue right now. But differently, I believe I got "/sdcard/test2.xml" (9 charactors from "test2.xml") works firstly. but if I did try to read "abc_config.xml", then I get the same issues (fopen return "NULL").

So, what should we do?

Hi ESP32ers, Recently I got some small problem about "Inter-task Communication". The test set is: If I trigger a button (one of five). I need to track this event in one task, put message like the new state of the button, the number of the button and timestamp of this event as payload, and pass this ...