stm32使用固件库串口接收程序
时间: 2023-08-02 20:06:32 浏览: 94
以下是使用STM32固件库进行串口接收的基本步骤:
1. 配置串口参数:波特率、数据位、停止位、校验位等。
```c
USART_InitTypeDef USART_InitStructure;
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_Mode = USART_Mode_Rx | USART_Mode_Tx;
USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;
USART_Init(USART1, &USART_InitStructure);
```
2. 开启串口中断。
```c
USART_ITConfig(USART1, USART_IT_RXNE, ENABLE);
```
3. 实现串口中断函数,处理接收到的数据。
```c
void USART1_IRQHandler(void)
{
if(USART_GetITStatus(USART1, USART_IT_RXNE) != RESET)
{
// 读取接收缓冲区数据
uint8_t data = USART_ReceiveData(USART1);
// 处理接收到的数据
// ...
}
}
```
在串口中断函数中,我们可以使用`USART_ReceiveData`函数读取接收缓冲区中的数据,并对数据进行相应处理。
4. 启动串口。
```c
USART_Cmd(USART1, ENABLE);
```
通过以上步骤,我们就可以使用STM32固件库实现串口接收功能了。
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