serial communication using turbo c from system to system

here is my code...............
#include<stdio.h>
#include<conio.h>
#include<dos.h>
#define PORT1 0X3F8
void main()
{
unsigned char c;
unsigned char ch;
int i,k,buff=0;
int buffer[100]={0};
unsigned char A1[9]={0x7e,0xa0,0x07,0x03,0x41,0x93,0x5a,0x64,0x7e};
// unsigned char S1[65]={0x7e,0xa0,0x3f,0x03,0x41,0x10,0xe3,0x7b,0xe6,0xe6,0x00,0x60,0x31,0xa1,0x09,0x06,0x07,0x60,0x85,0x74,0x05,0x08,0x01,0x01,0x8a,0x02,0x07,0x80,0x8b,0x07,0x60,0x85,0x74,0x05,0x08,0x02,0x01,0xac,0x05,0x80,0x03,0x31,0x32,0x33,0xbe,0x10,0x04,0x0e,0x01,0x00,0x00,0x00,0x06,0x5f,0x1f,0x04,0x00,0x00,0x18,0x1d,0xff,0xff,0xd1,0x80,0x7e};

clrscr();
outportb(PORT1 + 1, 0x00);
outportb(PORT1 + 3, 0x80);
outportb(PORT1 + 0, 0X0C);
outportb(PORT1 + 1, 0x00);
outportb(PORT1 + 3, 0x03);
outportb(PORT1 + 2, 0xc7);
outportb(PORT1 + 4, 0X0F);

printf("\n Sample comm's program. Press ESC to quit\n");
for(k=0;k<9;k++)
{
outportb(PORT1, A1[k]);
}
printf("hai");
for(k=0;k<=10;k++);
do
{
c=inportb(PORT1+5);
if(c&1)
{
for(i=0;i<=buff;i++)
{
buffer[buff]=inportb(PORT1);
printf("%02x",buffer[buff]);
buff++;
}
}
}while(c&1);
/* for(i=0;i<buff;i++)
{
printf("%02x",buffer);
}
/* switch(buffer[5])
{
case 73:
printf("hello");
for(k=0;k<65;k++)
{
outportb(PORT1, S1[k]);
}
break;
/* case 03:
outport(PORT1, 7e a0 19 03 41 32 3a bd e6 e6 00 c0 01 81 00 07 00 00 63 62 00 ff 02 00 91 79 7e);
break;*/
// }


// goto label;
exit();


/* do
{
c=inportb(PORT1+5);
if(c&1)
{
buffer[buff]=inportb(PORT1);
buff++;
}
}while(inportb(PORT1+5));
printf("hai");
for(i=0;i<=buff;i++)
{
printf("%02x",buffer);
}
if(buffer[1]==0xa0)
{
printf("ok");
}
else
{
printf("not ok");
} */
}


my aim is i send request..... then another person send response..... i want to collect that response in buffer and print that......

but i send. but can't able to receive whole response and print correctly.... pl anyone explain me.....:----(

hi pooorani,
i have attached a c code that can be compiled on turbo c. you can use that code to create serial communication between systems. On top of it, you can try whatever you want. Instead of trying it on dos, if you try it on windows , it will be easier for you.


regards,
vinoth.

bagyavinoth said:

hi pooorani,
i have attached a c code that can be compiled on turbo c. you can use that code to create serial communication between systems. On top of it, you can try whatever you want. Instead of trying it on dos, if you try it on windows , it will be easier for you.


regards,
vinoth.

Click to expand...

thank you..........
using dos, only i have to work thats my boss order. now my program runs well with some changes made after