Arduino Micro笔记 发表于 2018-05-12 更新于 2020-03-03 Uno的pin2和pin3是interrupt 0和1基于32u4的刚好反过来pin2和pin3是interrupt 1和0瞎忙活半天 参考https://www.arduino.cc/reference/en/language/functions/external-interrupts/attachinterrupt/