Introduction - If you have any usage issues, please Google them yourself
A single light, respectively, shifted to right then left at P1.0-P1.7 microcontroller interface, the output " 0" when the bright light-emitting diode, the beginning of P1.0 → P1.1 → P1.2 → P1. 3 → ┅ → P1.7 → P1.6 → ┅ → P1.0 Liang, repeat cycle