serial_read.c

来自「vxworks串口调试程序事例适用于初学者」· C语言 代码 · 共 40 行

#include <ioLib.h>
#include <vxWorks.h>
#include "strLib.h"
#include <string.h>
#include <sioLib.h>
#include <stdio.h>
#include <ioctl.h>
#include <selectLib.h>
#include <taskLib.h >
#include "types/vxTypesOld.h"

void test_write(void)
{
	int serialFd;
	serialFd = open("/tyCo/0",O_RDWR,0);
	write(serialFd,"Hello,World!\n",13); 
	close(serialFd); 
}


void test_read(void)
{
	int serialFd;
	int n;
	char *buf;
	serialFd = open("/tyCo/0",O_RDWR,0);
	if(write(serialFd,"Input : ", 8) == ERROR) 
	perror("Write 1 ");
	if((n = read(serialFd, buf, sizeof(buf))) > 0) 
	{
		if(write(serialFd,"Your Input is ", 15) == ERROR)
		perror("Write 2 ");
		else
		if(write(serialFd, buf, n) != n) 
		perror("Write 3 ");
	}
	else
	perror("read");
	close(serialFd);
}