In order to use the mpu9250 in fifo mode, (for dmp usage)
I need to have an interrrupt
I’ve used the #define INTERRUPT_PIN 2 // use pin 2 on Arduino Uno & most boards
But it doesnt work
please look at Pad2 that marked on the graph, it does not connect to any pin. And you need to solder a pin or line on it and connect it to the pin you select in your code.