Application: When I/O detection, use SysTick to count. If there is a bounce between a certain period of time, do not respond to avoid the noise.
BSP Version: NUC123 Series BSP CMSIS v3.01.001
Hardware: NuTiny-EVB-123-LQFP64_V1.0
Under normal circumstances, when the I/O detects the signal, it is likely to be disturbed by the noise, and the system will respond incorrectly. This example uses the system counter to filter the jitter that occurs during a certain time interval as noise to avoid making mistakes.