User buttons?

Hi there~,


The 3 Buttons are MCU Reset Button, MCU Boot (DFU) Button,EC21 Power Button. You can not define it by yourself.

There is interrupt Grove port, D38. You can connect Grove button to that port.

https://www.seeedstudio.com/Grove-Button-p-766.html

Here is the code.

https://github.com/Seeed-Studio/WioLTE_Cat_NB1_Arduino_Library/blob/master/examples/ExternInterrupt/ExternInterrupt.ino

Thanks

best rgds
Bill