@felmue said in Cant compile M5ez.h: Hello @EricR without downgrading the Arduino ESP32 framework (e.g. using v2.0.3) I was able to compile M5ez with the following three modifications. In M5ez.h disable WPS by replacing#define M5EZ_WPS with #define M5EZ_WPSx. In M5ez.cpp replace info.disconnected.reason with info.wifi_sta_disconnected.reason. In M5ez.cpp replace SYSTEM_EVENT_STA_DISCONNECTED with ARDUINO_EVENT_WIFI_STA_DISCONNECTED. Thanks Felix Thanks a lot! I am starting again to program for M5Stack after a long time and I was having problems compiling M5ez and understanding where the problem was, but you solved this for me!

Hi Vielen Dank für die Antwort bin mittlerweile einen Schritt weiter. Aber sobald ich den Button drücke kommt jetzt zuerst ein A und danach tauchen lauter 255 auf und der Drucker druckt lauter Chinesische Zeichen.

@chriszang and another update. So I am happily working on my CAN receiver sketch and just noticed that I forgot to press the button that grounds INT-output of the mc2515 but the upload still worked. Gave it another try (w/o pressing the button) and it's still working - weird. Then I swapped this COMMU module for my 2nd COMMU Module and here the upload doesn't work. My explanation is that the grounding of the mcp2515 INT-output basically created a short circuit in the transistor that controls this pin and eventually burned it out. Not a big problem for me as a) I am not using interrupts in my sketch b) I have a 2nd COMMU unit I just wanted to warn you guys that grounding the INT output has unintended consequences.

Hi FunkyFab interesting... Thanks for sharing. Glad you got it working again. Cheers Felix