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bioscom

Posted on 1997-03-25
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Last Modified: 2008-03-10
I want to be able to get 2 PC's to communicate over a serial link using the bioscom function.  The code I have been experimenting with is shown below.

The first PC runs following code


int main(void)
{
   int i,;
   char send;

   send='b';

   bioscom(0, 0xe3, COM2); //sets up com2 for 9,600 baud , no parity, 1 stop bit

   for (i=0;i<500;i++){
                  bioscom(1, send, COM2); //sends 'b' 500 times
                 }
   }

The second PC runs the following code

int main(void)
{
   int i,;
   char send,recieved;

   send='b';

   bioscom(0, 0xe3, COM2); //sets up com2 for 9,600 baud , no parity, 1 stop bit

   for (i=0;i<500;i++){
                      recieved=bioscom(2, send, COM2); //recieves 500 bytes
                 }
   }


both programs work fine when the other PC is running comms software such as terminal,  but they won't work with each other.
Ultimatly I want to be able to write 2 C programmes each running on a seperate PC's which can send text files to each other over a serial link.
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Question by:grahamr032597
3 Comments
 
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Expert Comment

by:julio011597
ID: 1249755
Well, and the question is? :)
I mean, at least show a bunch of code to those of us (not me, i'm afraid) who could help you.
Rgds, julio
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Author Comment

by:grahamr032597
ID: 1249756
Edited text of question
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Accepted Solution

by:
klos earned 300 total points
ID: 1249757
Make sure you enable the modem control signals in your programs.  The BIOS will expect to see those signals on when it tries to send or receive data, and fail if it doesn't.  I expect the cable you're using already has these signals since the programs work with other COMM programs.
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