通过实验，熟悉如何设置系统主时钟(MCLK)、辅助时钟(ACLK)、 子系统时钟(SMCLK) 程序运行后可以得到ACLK＝32768、MCLK＝SMCLK＝32768*10 -Through the experiment, be familiar with how to set up the system master clock (MCLK), auxiliary clock (ACLK), Subsystem (SMCLK clock) After the progra