Try this: https://github.com/OnionIoT/gpioIrq
But I 've never tested it! This code uses sysfs edge detection, so I think doesn't need an irq kernel module.
edit: I forgot to mention Baud rate, you should use 115200
using "C" termios libriary
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@Peter-Buelow nice work Peter and thank you for sharing your work.
Crickets and tumbleweed
@Boken-Lin That was an amazingly quick response! :-) Many thanks, I'll take a look and come back to you if I have any questions
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