ttytest.c

一个在arm2410下与pc机的串口调试程序

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "rs232.h"
//#define DEBUG
//int comchec(unsigned char *back)
//{

int main(int argc, char *argv[])
{
        int ret1,i,j,count=0,end=0;
	int ret,portno,nWritten,nRead;
	char buf[256];
	unsigned char  sendinit[14]={0x88,0xfb,0xfa,0x07,0x04,0x01,0x01,0x00,0x01,0x61,0x90,0xfc,0xfc};
	portno=0;
	//while(1)
	//{
		//ret=OpenCom(portno,"/dev/ttyS0",115200);//open the com 1
                portno=1;
                 ret1=OpenCom(portno,"/dev/ttyS1",19200);//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(portno,sendinit,13);
		printf("/dev/ttyS0 has send %d chars!\n",nWritten);
		printf("\nRecieving data!**\n");
		 fflush(stdout);
		//nRead=ComRd(1,buf,47,30000);//receive the data from the com 2
		for(i=0;i<51;i++)
		{
			nRead=ComRd(1,&buf[i],1,500);
		      if(nRead==1)
		   	{  
		   	if(i==0&&buf[i]==0x88)
		         	j++;
			else if(i==1&&buf[i]==0xfb)
				j++;
				else  j++;
			if((buf[i]==0xfc)
				{if(buf[i-1]==0xfc)
				{end=i;}
					//else if(buf[i+1]==0xfc)
						//{NULL;}
				}
		   	}
			  else  {j=0;
			  		break;}
		}             
		if(j>0)
		{for(i=0;i<51;i++)
		
			{printf("%x ",buf[i]);
		if(i==25) printf("\n ");
		if(i==50) printf("\n ");
			}}
		else
		{
                   	printf("Timeout\n");
                        ret=CloseCom(portno);//close the com 2
 
                }
		printf("nread=%d\n",nRead);
                ret=CloseCom(portno);
		if((ret=CloseCom(portno)==-1))
		{
			perror("Close com");
			exit(1);
		}
		printf("ok*****************end\n");
	//}//end while 1
	printf("Exit now.\n");
	return;
}