STM32 Alternate functions 与 Additional functions

STM32 MCU的IO引脚可以作为GPIO功能（绝大部分IO上电后的默认为该模式），也可以作为Alternate functions（复用功能）和 Additional functions（附加功能、辅助功能）。

Alternate functions：Functions selected through GPIOx_AFR registers
即需要通过GPIOx_AFR寄存器配置来选择。

Additional functions：Functions directly selected/enabled through peripheral registers
即直接通过相应外设寄存器打开或关闭。

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STM32 Alternate functions 与 Additional functions

STM32 Alternate functions 与 Additional functions

STM32 Alternate functions 与 Additional functions相关推荐

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