如下语句来自《Developing Applications on STM32Cube with RTOS》自己翻译的拗口，
不易理解。
Further, if the frequency of the tick interrupt is too high, the energy and time consumed entering and
then exiting a low power state for every tick will outweigh any potential power saving gains
for all but the lightest power saving modes.
而且 ，如果节拍中断的频率太高，每个节拍进入和退出低功耗状态的能量和时间消耗比任何潜在的节省功率还要大，最低功率节约模式除外。
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楼主
