中断和延时控制发光二极管通断，一个是600ms的周期，一个是1s的周期。(Interruption and delay control leds on and off)

STM32F103C8T6+WS2812串行总线控制60个全彩LED，实现带呼吸效果的制炫酷实时时钟功能(STM32F103C8T6+WS2812 serial bus controls 60 full-color LEDs to realize cool real-time clock function with breath light effect)