使用用stm32f103串口接收DMX512协议给出代码

以下是使用STM32F103串口接收DMX512协议的示例代码：

#include "stm32f10x.h"

#define DMX_DATA_SIZE 512 // DMX数据包大小 #define DMX_BREAK_TIME 88 // DMX信号中断时间（单位：us） #define DMX_MAB_TIME 8 // DMX信号标记包时间（单位：us）

uint8_t dmx_data[DMX_DATA_SIZE]; // 存放DMX数据的数组 uint8_t dmx_data_received = 0; // 标记DMX数据是否接收完毕

void USART1_IRQHandler(void) { static uint16_t dmx_data_index = 0; // 当前DMX数据索引 static uint8_t dmx_break_received = 0; // 标记DMX信号中断是否接收完毕

if (USART_GetFlagStatus(USART1, USART_FLAG_RXNE) == SET) // 判断是否接收到数据
{
    uint8_t data = USART_ReceiveData(USART1);

    if (dmx_break_received) // 接收到DMX数据
    {
        dmx_data[dmx_data_index++] = data;
        if (dmx_data_index >= DMX_DATA_SIZE) // 接收完毕
        {
            dmx_data_received = 1;
            dmx_data_index = 0;
        }
    }
    else // 接收到DMX信号中断
    {
        if (data == 0) // 判断是否接收到正确的信号中断
        {
            dmx_break_received = 1;
            dmx_data_index = 0;
        }
    }
}

}

int main(void) { USART_InitTypeDef USART_InitStructure;

// 初始化USART1
RCC_APB2PeriphClockCmd(RCC_APB2Periph_USART1, ENABLE);

USART_InitStructure.USART_BaudRate = 250000; // DMX数据传输速率为250000bps
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(USART1, &USART_InitStructure);
USART_Cmd(USART1, ENABLE);

// 配置USART1中断
NVIC_InitTypeDef NVIC_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);

while (1)
{
    if (dmx_data_received) // 判断是否接收到完整的DMX数据包
    {
        // 处理DMX数据包
        // ...

        dmx_data_received = 0;
    }
}