2019-07-20 16:08发布
zmingwang 发表于 2017-3-15 09:48 可以试试用FCLK时钟源 SysTick->LOAD = ((uint32_t)(((double)HCLK * (double)(TICK) ) / 1000000) - 1); ...
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SYSTICK的时钟源只能是HCLK或者它的八分频啊
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