STM32F1系列各串口配置代码

目录

• [1. 串口配置](#1. 串口配置)
• • [1-1. 串口1](#1-1. 串口1)
  • [1-2. 串口2](#1-2. 串口2)
  • [1-3. 串口3](#1-3. 串口3)
  • [1-4. 串口4](#1-4. 串口4)
  • [1-5. 串口5](#1-5. 串口5)
• [2. 串口发送配置](#2. 串口发送配置)

1. 串口配置

串口配置代码：

1-1. 串口1

void USART_Configuration(void)
{
	GPIO_InitTypeDef GPIO_InitStructure;
	USART_InitTypeDef USART_InitStructure;
	NVIC_InitTypeDef NVIC_InitStructure;

	/*打开时钟 */
	RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA | RCC_APB2Periph_AFIO, ENABLE);
	RCC_APB2PeriphClockCmd(RCC_APB2Periph_USART1, ENABLE);
	/* USART1 TX PA9 */
	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);
	/* USART1 RX PA10 */
	GPIO_InitStructure.GPIO_Pin = GPIO_Pin_10;
	GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
	GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
	GPIO_Init(GPIOA, &GPIO_InitStructure);
											
	/* USART 配置*/
	USART_DeInit(USART1);
	USART_InitStructure.USART_BaudRate = 115200;
	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);
	
	/* 使能接收中断*/
	USART_ITConfig(USART1, USART_IT_RXNE, ENABLE); 

	/* 使能USART1 */
	USART_Cmd(USART1, ENABLE);
	/* Ç清除发送完成标志*/
	USART_ClearFlag(USART1, USART_FLAG_TC);

	NVIC_PriorityGroupConfig(NVIC_PriorityGroup_0);		   

	/* Enable the USART1 Interrupt */
	NVIC_InitStructure.NVIC_IRQChannel = USART1_IRQn;			 //´中断
	NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
	NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
	NVIC_Init(&NVIC_InitStructure);
}

1-2. 串口2

void USART_Configuration(void)
{
	GPIO_InitTypeDef GPIO_InitStructure;
	USART_InitTypeDef USART_InitStructure;
	NVIC_InitTypeDef NVIC_InitStructure;

	/* 时钟设置 */
	RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA | RCC_APB2Periph_AFIO, ENABLE);
	RCC_APB1PeriphClockCmd(RCC_APB1Periph_USART2, ENABLE);
	/* USART2 TX PA2 */
	GPIO_InitStructure.GPIO_Pin = GPIO_Pin_2;
	GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
	GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
	GPIO_Init(GPIOA, &GPIO_InitStructure);
	/* USART2 RX PA3 */
	GPIO_InitStructure.GPIO_Pin = GPIO_Pin_3;
	GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
	GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
	GPIO_Init(GPIOA, &GPIO_InitStructure);
											
	/* USART 配置*/
	USART_DeInit(USART2);
	USART_InitStructure.USART_BaudRate = 115200;
	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(USART2, &USART_InitStructure);
	
	/* 使能接收中断*/
	USART_ITConfig(USART2, USART_IT_RXNE, ENABLE); 

	/* 使能USART2 */
	USART_Cmd(USART2, ENABLE);
	/* 清除中断标志位 */
	USART_ClearFlag(USART2, USART_FLAG_TC);

	NVIC_PriorityGroupConfig(NVIC_PriorityGroup_0);		   

	/* Enable the USART2 Interrupt */
	NVIC_InitStructure.NVIC_IRQChannel = USART2_IRQn;			 //´®¿ÚÖжÏÉèÖÃ
	NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
	NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
	NVIC_Init(&NVIC_InitStructure);
}

1-3. 串口3

void USART_Configuration(void)
{
	GPIO_InitTypeDef GPIO_InitStructure;
	USART_InitTypeDef USART_InitStructure;
	NVIC_InitTypeDef NVIC_InitStructure;

	/* 时钟设置 */
	RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB | RCC_APB2Periph_AFIO, ENABLE);
	RCC_APB1PeriphClockCmd(RCC_APB1Periph_USART3, ENABLE);
	/* USART3 TX PB10 */
	GPIO_InitStructure.GPIO_Pin = GPIO_Pin_10;
	GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
	GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
	GPIO_Init(GPIOB, &GPIO_InitStructure);
	/* USART3 RX PB11 */
	GPIO_InitStructure.GPIO_Pin = GPIO_Pin_11;
	GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
	GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
	GPIO_Init(GPIOB, &GPIO_InitStructure);
											
	/* USART 设置 */
	USART_DeInit(USART3);
	USART_InitStructure.USART_BaudRate = 115200;
	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(USART3, &USART_InitStructure);
	
	/* 使能接收中断*/
	USART_ITConfig(USART3, USART_IT_RXNE, ENABLE); 

	/* 使能USART3 */
	USART_Cmd(USART3, ENABLE);
	/* 清除中断标志位 */
	USART_ClearFlag(USART3, USART_FLAG_TC);

	NVIC_PriorityGroupConfig(NVIC_PriorityGroup_0);		   

	/* Enable the USART1 Interrupt */
	NVIC_InitStructure.NVIC_IRQChannel = USART3_IRQn;			 //´®¿ÚÖжÏÉèÖÃ
	NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
	NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
	NVIC_Init(&NVIC_InitStructure);
}

1-4. 串口4

void USART_Configuration(void)
{
	GPIO_InitTypeDef GPIO_InitStructure;
	USART_InitTypeDef USART_InitStructure;
	NVIC_InitTypeDef NVIC_InitStructure;

	/* ´时钟设置 */
	RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOC | RCC_APB2Periph_AFIO, ENABLE);
	RCC_APB1PeriphClockCmd(RCC_APB1Periph_UART4,ENABLE);
	/* UART4 TX PB10 */
	GPIO_InitStructure.GPIO_Pin = GPIO_Pin_10;
	GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
	GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
	GPIO_Init(GPIOC, &GPIO_InitStructure);
	/* UART4 RX PB11 */
	GPIO_InitStructure.GPIO_Pin = GPIO_Pin_11;
	GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
	GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
	GPIO_Init(GPIOC, &GPIO_InitStructure);
											
	/* USART 设置*/
	USART_DeInit(USART3);
	USART_InitStructure.USART_BaudRate = 115200;
	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(UART4, &USART_InitStructure);
	
	/* 使能接收中断 */
	USART_ITConfig(UART4, USART_IT_RXNE, ENABLE); 

	/* 使能UART4 */
	USART_Cmd(UART4, ENABLE);
	/* 清除中断标志位 */
	USART_ClearFlag(UART4, USART_FLAG_TC);

	NVIC_PriorityGroupConfig(NVIC_PriorityGroup_0);		   

	/* Enable the USART1 Interrupt */
	NVIC_InitStructure.NVIC_IRQChannel = UART4_IRQn;			 //´®¿ÚÖжÏÉèÖÃ
	NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
	NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
	NVIC_Init(&NVIC_InitStructure);
}

1-5. 串口5

void USART_Configuration(void)
{
	GPIO_InitTypeDef GPIO_InitStructure;
	USART_InitTypeDef USART_InitStructure;
	NVIC_InitTypeDef NVIC_InitStructure;

	/* 时钟设置 */
	RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOC | RCC_APB2Periph_GPIOD | RCC_APB2Periph_AFIO, ENABLE);
	RCC_APB1PeriphClockCmd(RCC_APB1Periph_UART5, ENABLE);
	/* UART5 TX PC12 */
	GPIO_InitStructure.GPIO_Pin = GPIO_Pin_12;
	GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
	GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
	GPIO_Init(GPIOC, &GPIO_InitStructure);
	/* UART5 RX PD2 */
	GPIO_InitStructure.GPIO_Pin = GPIO_Pin_2;
	GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
	GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
	GPIO_Init(GPIOD, &GPIO_InitStructure);
											
	/* USART 设置 */
	USART_DeInit(UART5);
	USART_InitStructure.USART_BaudRate = 115200;
	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(UART5, &USART_InitStructure);
	
	/* 使能接收中断 */
	USART_ITConfig(UART5, USART_IT_RXNE, ENABLE); 

	/* ʹÄÜUART5 */
	USART_Cmd(UART5, ENABLE);
	/* 清除中断标志位 */
	USART_ClearFlag(UART5, USART_FLAG_TC);

	NVIC_PriorityGroupConfig(NVIC_PriorityGroup_0);		   

	/* Enable the USART1 Interrupt */
	NVIC_InitStructure.NVIC_IRQChannel = UART5_IRQn;			 //´®¿ÚÖжÏÉèÖÃ
	NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
	NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
	NVIC_Init(&NVIC_InitStructure);
}

2. 串口发送配置

串口发送函数

void USART_Send(USART_TypeDef* USARTx, uint8_t *Dat,uint16_t len)
{
  uint16_t i;
  for(i=0;i<len;i++)
  {
  	USART_SendData(USARTx, Dat[i]);
	  while(USART_GetFlagStatus(USARTx, USART_FLAG_TC)==RESET);     
  }
}

串口发送字符串函数

void USART_STR(USART_TypeDef* USARTx,char *str)
{
  uint8_t len,i;
	len=strlen(str);
	for(i=0;i<len;i++)
	{
	  	USART_SendData(USARTx, str[i]);
		while(USART_GetFlagStatus(USARTx, USART_FLAG_TC)==RESET); 	
	}
}