i want to transmit and receive data on RS232 using udp and i want to know about techniques which allow me to transmit and receive data on a faster rate and also no lose of data is there?
thanx in advance. i have tried but need improvements if possible
#include <stdio.h>
#include <dos.h>
#include<string.h>
#include<conio.h>
#include<iostream.h>
#include<stdlib.h>
#define PORT1 0x3f8
void main()
{
int c,ch,choice,i,a=0;
char filename[30],filename2[30],buf;
FILE *in,*out;
clrscr();
while(1){
outportb(PORT1+0,0x03);
outportb(PORT1+1,0);
outportb(PORT1+3,0x03);
outportb(PORT1+2,0xc7);
outportb(PORT1+4,0x0b);
cout<<"\n===============================================================";
cout<<"\n\t*****Serial Communication By BADR-U-ZAMAN******\nCommunication between two computers By serial port";
cout<<"\nPlease select\n[1]\tFor sending file \n[2]\tFor receiving file \n[3]\tTo exit\n";
cout<<"=================================================================\n";
cin>>choice;
if(choice==1)
{
strcpy(filename,"C:\\TC\\BIN\\badr.cpp");
cout<<filename;
for(i=0;i<=strlen(filename);i++)
outportb(PORT1,filename[i]);
in=fopen(filename,"r");
if (in==NULL)
{ cout<<"cannot open a file";
a=1;
}
if(a!=1)
cout<<"\n\nFile sending.....\n\n";
while(!feof(in))
{
buf=fgetc(in);
cout<<buf;
outportb(PORT1,buf);
delay(5);
}
}
else
{
if(choice==3)
exit(0);
i=0;
buf='a';
while(buf!=NULL)
{
c=inportb(PORT1+5);
if(c&1)
{
buf=inportb(PORT1);
filename2[i]=buf;
i++;
}
}
out=fopen(filename2,"t");
cout<<"\n Filename received:"<<filename[2];
cout<<"\nReading from the port...";
cout<<"writing to file"<<filename2;
do
{
c=inportb(PORT1+5);
if(c&1)
{
buf=inportb(PORT1);
cout<<buf;
fputc(buf,out);
delay(5);
}
if(kbhit())
{
ch=getch();
}
}while(ch!=27);
}
getch();
}
}
