Introduction - If you have any usage issues, please Google them yourself
2812 has extended the development of on-board interrupt input interface, which may interrupt source shielding EXINT1-EXINT5, non-maskable interrupt EXNMI1, EXNMI2, input termination EXINT5 which has small keys, as long as the user press the small button, EXINT5 pin on the emergence of low power ping. As long as the corresponding settings in the software, you can interrupt occurred.