stm32串口中断接收数据代码
时间: 2023-08-30 11:10:28 浏览: 93
STM32串口中断接收发送数据
以下是一个简单的示例代码,用于使用STM32的串口中断接收数据:
```
#include "stm32f10x.h"
#define MAX_RX_BUFFER_SIZE 50
uint8_t rx_buffer[MAX_RX_BUFFER_SIZE];
volatile uint8_t rx_index = 0;
void USART1_IRQHandler(void) {
if (USART_GetITStatus(USART1, USART_IT_RXNE) != RESET) {
rx_buffer[rx_index++] = USART_ReceiveData(USART1);
if (rx_index >= MAX_RX_BUFFER_SIZE) {
rx_index = 0;
}
}
}
int main(void) {
USART_InitTypeDef USART_InitStructure;
NVIC_InitTypeDef NVIC_InitStructure;
GPIO_InitTypeDef GPIO_InitStructure;
RCC_APB2PeriphClockCmd(RCC_APB2Periph_USART1 | RCC_APB2Periph_GPIOA, ENABLE);
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);
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_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);
NVIC_InitStructure.NVIC_IRQChannel = USART1_IRQn;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);
USART_ITConfig(USART1, USART_IT_RXNE, ENABLE);
USART_Cmd(USART1, ENABLE);
while (1) {
// 在这里处理接收到的数据
}
}
```
在这个示例中,我们使用USART1并启用了GPIOA的时钟。我们还初始化了PA9作为USART1的TX引脚,PA10作为USART1的RX引脚。
在中断处理程序中,我们检查USART1的接收缓冲区是否有可用数据。如果有,我们将其存储在rx_buffer中,直到缓冲区已满。
在主循环中,我们可以使用rx_buffer中的数据进行任何所需的处理。
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