stm32串口控制led灯

好的，下面是控制LED灯的代码，使用STM32的串口通信控制：

#include "stm32f10x.h"

#define LED_PIN GPIO_Pin_13
#define LED_PORT GPIOC

void USART2_IRQHandler(void)
{
    if(USART_GetITStatus(USART2, USART_IT_RXNE) != RESET) 
    {
        uint16_t ch = USART_ReceiveData(USART2);
        if (ch == '1')
        {
            GPIO_SetBits(LED_PORT, LED_PIN);
        }
        else if (ch == '0')
        {
            GPIO_ResetBits(LED_PORT, LED_PIN);
        }
    }
}

void USART2_Config(void)
{
    USART_InitTypeDef USART_InitStructure;
    GPIO_InitTypeDef GPIO_InitStructure;
    NVIC_InitTypeDef NVIC_InitStructure;

    RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA | RCC_APB2Periph_AFIO, ENABLE);
    RCC_APB1PeriphClockCmd(RCC_APB1Periph_USART2, ENABLE);

    /* Configure USART2 Tx (PA.02) as alternate function push-pull */
    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);

    /* Configure USART2 Rx (PA.03) as input floating */
    GPIO_InitStructure.GPIO_Pin = GPIO_Pin_3;
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
    GPIO_Init(GPIOA, &GPIO_InitStructure);

    /* Enable the USART2 Interrupt */
    NVIC_InitStructure.NVIC_IRQChannel = USART2_IRQn;
    NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;
    NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
    NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
    NVIC_Init(&NVIC_InitStructure);

    /* USART2 configuration */
    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);

    /* Enable USART2 */
    USART_Cmd(USART2, ENABLE);

    /* Enable USART2 RXNE Interrupt */
    USART_ITConfig(USART2, USART_IT_RXNE, ENABLE);
}

void LED_Config(void)
{
    GPIO_InitTypeDef GPIO_InitStructure;

    /* Configure PC.13 as push-pull output */
    GPIO_InitStructure.GPIO_Pin = LED_PIN;
    GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
    GPIO_Init(LED_PORT, &GPIO_InitStructure);
}

int main(void)
{
    USART2_Config();
    LED_Config();

    while (1)
    {
    }
}

在这个代码中，我们使用USART2接口来进行串口通信，并通过接收到的字符来控制LED灯的开关。当接收到字符 "1" 时，我们将LED灯打开，当接收到字符 "0" 时，我们将LED灯关闭。

需要注意的是，在使用USART2接口之前，我们需要先初始化USART2和LED的GPIO口。在main函数中我们只需要不停的循环，等待串口中断触发。当触发中断时，我们会读取串口中的一个字符，并根据该字符来控制LED的开关。