stm32f407的afio时钟
时间: 2023-09-14 16:13:29 浏览: 230
在STM32F407中,AFIO(Alternate Function I/O)模块已经被SYSCFG(System Configuration Controller)模块所取代。因此,在使用外设时,不再需要单独使能AFIO时钟。相反,需要使能SYSCFG时钟来配置外设的引脚复用功能。具体的代码如下所示:
RCC_APB2PeriphClockCmd(RCC_APB2Periph_SYSCFG, ENABLE);
这行代码会使能SYSCFG模块的时钟,以便进行引脚复用的配置。\[1\]
总结起来,STM32F407中的AFIO模块已经被SYSCFG模块所取代,因此在使用外设时需要使能SYSCFG时钟来进行引脚复用的配置。
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