This is an Arduino library that enables you attach an interrupt to any pin of Arduino Uno, Nano, Mini and other 328-based boards. The Arduino attachInterrupt () function only allows pines 2 & ~3.

is used by every other Arduino package I've used/looked at. I assume this variation is required by features of CH32V parts. There must be some workaround that I am not smart enough to work out. If I ...

Here a function called attachInterrupt is used, which will configure digital Pin 2 of Arduino as an external interrupt and it will call the function named coinInterrupt, when it detects any interrupts ...