解释：这是 ADC 内部的时钟分频器；你现在 ADC 异步时钟已经是 25 MHz，再除以 1 就是 25 MHz；25 MHz 对 100 kSPS 来说绰绰有余，也在安全范围内。
The goal of this STM32 project is to learn/show how embedded systems work and add multiple functionnalities using the STM32CubeIDE software. I initialized the TIM2 timer in PWM mode to generate a PWM ...
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