simple.c

00001 /* Small test/example program
00002 Copyright (C) 1999, 2000, 2001, 2002, 2003 Free Software Foundation, Inc.
00003 Written by Stephane Carrez (stcarrez@nerim.fr) 
00004 
00005 This file is free software; you can redistribute it and/or modify it
00006 under the terms of the GNU General Public License as published by the
00007 Free Software Foundation; either version 2, or (at your option) any
00008 later version.
00009 
00010 In addition to the permissions in the GNU General Public License, the
00011 Free Software Foundation gives you unlimited permission to link the
00012 compiled version of this file with other programs, and to distribute
00013 those programs without any restriction coming from the use of this
00014 file. (The General Public License restrictions do apply in other
00015 respects; for example, they cover modification of the file, and
00016 distribution when not linked into another program.)
00017 
00018 This file is distributed in the hope that it will be useful, but
00019 WITHOUT ANY WARRANTY; without even the implied warranty of
00020 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
00021 General Public License for more details.
00022 
00023 You should have received a copy of the GNU General Public License
00024 along with this program; see the file COPYING. If not, write to
00025 the Free Software Foundation, 59 Temple Place - Suite 330,
00026 Boston, MA 02111-1307, USA. */
00027 
00039 #include <sys/sio.h>
00040 #include <sys/interrupts.h>
00041 
00042 /* Prints "Hello %d\n" on the serial device. */
00043 static void
00044 print_hello (unsigned i)
00045 {
00046 char buf[15];
00047 char* p;
00048 unsigned char c;
00049 unsigned int value;
00050 
00051 p = &buf[15];
00052 *--p = 0;
00053 value = i;
00054 
00055 do {
00056 c = value % 10;
00057 value = value / 10;
00058 *--p = c + '0';
00059 } while (value != 0);
00060 
00061 serial_print ("Hello ");
00062 serial_print (p);
00063 serial_print ("\n");
00064 }
00065 
00066 int
00067 main ()
00068 {
00069 unsigned i;
00070 
00071 serial_init ();
00072 for (i = 0; i < 1000; i++)
00073 {
00074 print_hello (i);
00075 }
00076 return 0;
00077 }