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The C Users' Group Library 1994 August
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wc-cdrom-cusersgrouplibrary-1994-08.iso
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v_01_01
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1n01058a
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1990-05-17
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62 lines
*****Listing 2*****
/*
* TERM.C
*
* Copyright (C) Mark R. Nelson 1990
*
* This file contains the main() procedure for a skeletal
* terminal emulator program. This code has no bells or
* whistles, as it exists only to exercise and test the
* RS-232 interface code. Keyboard input is done using the
* MS-DOS specific compiler calls to kbhit() and getch().
* Screen output is done using standard I/O calls to
* stdout.
*
* To build this program in Turbo C:
*
* tcc -w term.c com.c
*
* To build this program in Quick C:
*
* qcl -W3 term.c com.c
*/
#include <stdio.h>
#include <stdlib.h>
#include <conio.h>
#include "com.h"
main()
{
PORT *port;
int c;
port = port_open( COM1_UART, COM1_INTERRUPT );
if ( port== NULL ) {
printf( "Failed to open the port!\n" );
exit( 1 );
}
port_set( port, 2400L, 'N', 8, 1 );
/*
* The program stays in this loop until the user hits the
* Escape key. The loop reads in a character from the
* keyboard and sends it to the COM port. It then reads
* in a character from the COM port, and prints it on the
* screen.
*/
for ( ; ; ) {
if ( kbhit() ) {
c = getch();
if ( c == 27 )
break;
else
port_putc( (unsigned char) c, port );
}
c = port_getc( port );
if ( c >= 0 )
putc( c, stdout );
}
port_close( port );
return( 0 );
}