c语言写一个stm32串口初始化代码

以下是一个基本的STM32串口初始化代码，可根据需要进行修改：

#include "stm32f10x.h"

void USART1_Init(void)
{
  GPIO_InitTypeDef GPIO_InitStructure;
  USART_InitTypeDef USART_InitStructure;

  // Enable GPIOA clock
  RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA, ENABLE);

  // Enable USART1 clock
  RCC_APB2PeriphClockCmd(RCC_APB2Periph_USART1, ENABLE);

  // Configure USART1 TX pin (PA9) as alternate function push-pull
  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_9;
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
  GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
  GPIO_Init(GPIOA, &GPIO_InitStructure);

  // Configure USART1 RX pin (PA10) as input floating
  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_10;
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
  GPIO_Init(GPIOA, &GPIO_InitStructure);

  // Configure USART1
  USART_InitStructure.USART_BaudRate = 9600;
  USART_InitStructure.USART_WordLength = USART_WordLength_8b;
  USART_InitStructure.USART_StopBits = USART_StopBits_1;
  USART_InitStructure.USART_Parity = USART_Parity_No;
  USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;
  USART_InitStructure.USART_Mode = USART_Mode_Rx | USART_Mode_Tx;
  USART_Init(USART1, &USART_InitStructure);

  // Enable USART1
  USART_Cmd(USART1, ENABLE);
}

请注意，此代码仅用于初始化USART1串口，如果需要初始化其他串口，需要进行相应修改。