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- *****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 );
- }
-