生成一个stm32f4串口数据接收代码
时间: 2023-04-04 12:00:21 浏览: 67
你好,我可以回答这个问题。以下是一个基本的 stm32f4 串口数据接收代码示例:
```c
#include "stm32f4xx.h"
void USART2_IRQHandler(void)
{
if (USART_GetITStatus(USART2, USART_IT_RXNE) != RESET)
{
uint16_t data = USART_ReceiveData(USART2);
// 处理接收到的数据
}
}
int main(void)
{
// 初始化串口
RCC_APB1PeriphClockCmd(RCC_APB1Periph_USART2, ENABLE);
USART_InitTypeDef USART_InitStructure;
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_Init(USART2, &USART_InitStructure);
USART_Cmd(USART2, ENABLE);
// 初始化中断
NVIC_InitTypeDef NVIC_InitStructure;
NVIC_InitStructure.NVIC_IRQChannel = USART2_IRQn;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = ;
NVIC_InitStructure.NVIC_IRQChannelSubPriority = ;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);
while (1)
{
// 主循环
}
}
```
以上代码使用 USART2 作为串口,每当接收到一个字节时,会触发 `USART2_IRQHandler` 中断处理函数。在该函数中,可以通过 `USART_ReceiveData` 函数获取接收到的数据,并进行处理。在 `main` 函数中,首先初始化了串口和中断,然后进入主循环。