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CPU的工作频率是STM32本身的工作频率吗？是否需要在软件中设置？cpufreq.get_current_frequencies()获取的4个参数是什么意思？CPU频率缩放是什么意思
不需要设置，默认就是最高运行频率。只有想降低运行速度的时候需要设置cpu频率。