linux编程51单片机

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <fcntl.h>
#include <termios.h>

int main() {
    int fd;
    struct termios options;
    char buffer[256];

    // 打开串口设备
    fd = open("/dev/ttyUSB0", O_RDWR | O_NOCTTY);
    if (fd == -1) {
        perror("open_port: Unable to open port");
        return -1;
    }

    // 设置串口参数
    tcgetattr(fd, &options);
    cfsetispeed(&options, B9600);
    cfsetospeed(&options, B9600);
    options.c_cflag |= (CLOCAL | CREAD);
    options.c_cflag &= ~PARENB;
    options.c_cflag &= ~CSTOPB;
    options.c_cflag &= ~CSIZE;
    options.c_cflag |= CS8;
    tcsetattr(fd, TCSANOW, &options);

    // 发送数据
    write(fd, "Hello 51MCU", 11);

    // 接收数据
    int n = read(fd, buffer, sizeof(buffer));
    if (n > 0) {
        buffer[n] = '\0';
        printf("Received: %s
", buffer);
    }

    close(fd);
    return 0;
}