VxWorks实现串口数据收发

作者：佚名上传时间：2023-03-23 运行软件：Wind River Systems 软件版本：VxWorks6.9 版权申诉

本示例代码演示了如何在VxWorks系统中通过串口进行数据收发。通过调用系统提供的函数库进行串口的配置和收发，快速实现串口通讯。代码中包括了串口数据的读取和写入，以及常见的错误处理。

/* include files */
#include <stdio.h>
#include <errno.h>
#include <string.h>
#include <unistd.h>
#include <fcntl.h> 
#include <ioLib.h>
#include <tyLib.h>

/* define variables */
int fd;     // serial port file descriptor
char buffer[256];   // buffer for writing and reading data

/* open serial port, configure and set parameters */
fd = open ("/tyCo/1", O_RDWR, 0);
if (fd == ERROR)
{
    printf("Failed to open serial port.");
}
else
{
    if (ioctl(fd, FIOOPTIONS, OPT_RAW) == ERROR)
    {
        printf("Failed to set serial port options.");
    }
    else
    {
        if (ioctl(fd, FIOBAUDRATE, 9600) == ERROR)
        {
            printf("Failed to set serial port Baudrate.");
        }
        else
        {
            printf("Serial port configured successfuly.");
        }
    }
}

/* send data over serial port */
sprintf(buffer,"Hello VxWorks");
if (write(fd, buffer, strlen(buffer)) == ERROR)
{
    printf("Failed to write data to serial port.");
}

/* receive data from serial port */
if (read(fd, buffer, sizeof(buffer)) == ERROR)
{
    printf("Failed to read data from serial port.");
}
else
{
    printf("Received data: %s", buffer);
}

/* close serial port */
ioctl(fd, FIOFLUSH, 0);
close(fd);