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继续龙芯+RT-Thread+LVGL，搞定带闪烁和鸣响的数码管倒计时
在龙芯1B200的嵌入式开发板上，借助RT-Thread的定时器，又加进了一个数码管倒计时的效果，带闪烁和蜂鸣器鸣响。关于视频背后的实现细节，请关注UP主的《龙芯+RT-Thread+LVGL实战笔记》合集。
《龙芯+RT-Thread+LVGL实战笔记》效果演示4/29
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