The electronic fence product is currently the most advanced perimeter anti-theft alarm system, consisting of a host and a front-end fence. The host mainly generates and receives high-voltage pulse sig
The common GPIO ports used on the development board are 4 LEDs, 1 button, and 3 enable pins U, V, and W. The Hall sensor is not used yet, so it is omitted.
1. Hardware circuit design
(1) Three enable