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External interrupts on Ubuntu 20.04

pk flag

currently I work on a tiny computer running Ubuntu 20.04 server. This computer contains several pins for SPI, I2C and so on. On similar computers (like the Raspberry Pi) there are also pins used as inputs to detect external interrupts.

Does anyone have an idea how to detect these external interrupts using build-in libraries/function of Ubuntu? Is there a 3rd-party library for this purpose? When using a RPi there is a library wiringPi but unluckily my computer is no RPi. When interrupting the voltage will only change between 0 V and U_max.

Reagrds, s0n1c

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