The STM32 clock drive system uses an internal and external crystal oscillator to provide a real-time clock signal. Its internal crystal oscillator frequency can reach 16MHz, and the external crystal oscillator can reach 32MHz. It can also support multiple clock sources, such as external reset signal, external clock input signal and USB OTG FS clock input signal.
Please write the clock driver of stm32
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Origin blog.csdn.net/weixin_35752233/article/details/129604901
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