gpiod - gpiomon

gpio를 매번 읽지 않고 이벤트 방식으로 확인할 수 있는 유틸리티

#  gpiomon -c 0 14                                              224.921879250   rising  gpiochip0 14                                             226.677878000   falling gpiochip0 14                                             228.376900625   rising  gpiochip0 14                                             230.884914250   falling gpiochip0 14

[링크 : https://stackoverflow.com/questions/78070072/gpiod-not-detecting-rising-edge-but-sysfs-implementation-did]

[링크 : https://github.com/brgl/libgpiod/blob/master/tools/gpiomon.c]