力天电子中LT-ARM214X学习板的USB数据通信试验的配套源程序。-Power-day e-learning in the LT-ARM214X test board supporting USB data communication source.

视频学习相关实例代码，包括通用IO口，定时器，看门狗，通用串口，时间管理器等外设的使用方法(Video learning related instance code, including general IO port, timer, watchdog, universal serial port, time manager and other peripherals)