ttytest.c

来自「一个在arm2410下与pc机的串口调试程序」· C语言 代码 · 共 65 行

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "rs232.h"
//#define DEBUG

int main(int argc, char *argv[])
{
        int ret1;
	int ret,portno,nWritten,nRead;
	char buf[256];
	portno=0;
	//while(1)
	//{
		  ret=OpenCom(portno,"/dev/ttyS0",115200);//open the com 1
                portno=1;
                 ret1=OpenCom(portno,"/dev/ttyS1",115200);//open the com 2 
		if(ret==-1)
		{
			perror("The /dev/ttyS0 open error.");
			exit(1);
		}
//------------------------------------------------------------
               if(ret1==-1)
                {
                        perror("The /dev/ttyS1 open error.");
                        exit(1);
                }

//------------------------------------------------------------
	//	nWritten=ComWrt(portn1,"please input:",12);
	//	printf("/dev/ttyS0 has send %d chars!\n",nWritten);
		printf("\nRecieving data!**");
		fflush(stdout);
		nRead=ComRd(1,buf,256,30000);//receive the data from the com 2
                printf("nread=%d\n",nRead);
		if(nRead>0)
		{
			printf("ok*****OK\n");
		}
		else
		{
                   	printf("Timeout\n");
                        ret=CloseCom(portno);//close the com 2
 
                }
                ret=CloseCom(portno);
		if((ret=CloseCom(portno)==-1))
		{
			perror("Close com");
			exit(1);
		}
		ret=CloseCom(0);
		if((ret=CloseCom(portno)==-1))
		{
			perror("Close com");
			exit(1);
		}
		printf("ok*****************end\n");
	//}//end while 1
	printf("Exit now.\n");
	return;
}