Necessary operations for using the serial port of STM32-EEWORLD

Collect

As can be seen from the figure, the main functions of these two pins are used as ordinary IO ports, and are used as serial port 1 in multiplexing mode.

Therefore, the multiplexing function clock must be turned on during power-on initialization.

RCC_APB2PeriphClockCmd(RCC_APB2Periph_AFIO,ENABLE);

Keywords：STM32 Reference address：Necessary operations for using the serial port of STM32

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