用C编写一个Linux环境下串口的应用串口的波特率是1152008位数据位1位停止位

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

#define BAUDRATE B115200 #define DEVICE "/dev/ttyS0"

int main() { int fd; struct termios options;

fd = open(DEVICE, O_RDWR | O_NOCTTY | O_NDELAY);
if (fd == -1)
{
    perror("open");
    exit(EXIT_FAILURE);
}

fcntl(fd, F_SETFL, 0);

tcgetattr(fd, &options);

cfsetispeed(&options, BAUDRATE);
cfsetospeed(&options, BAUDRATE);

options.c_cflag |= (CLOCAL | CREAD);
options.c_cflag &= ~PARENB;
options.c_cflag &= ~CSTOPB;
options.c_cflag &= ~CSIZE;
options.c_cflag |= CS8;

options.c_lflag &= ~(ICANON | ECHO | ECHOE | ISIG);
options.c_oflag &= ~OPOST;

options.c_cc[VMIN] = 1;
options.c_cc[VTIME] = 0;

tcsetattr(fd, TCSANOW, &options);

char msg[] = "Hello, Serial Port!\n";
write(fd, msg, strlen(msg));

char buf[255];
int n = read(fd, buf, 255);
buf[n] = '\0';
printf("%s", buf);

close(fd);

return 0;