/*
This file is part of JOP, the Java Optimized Processor
see <http://www.jopdesign.com/>
Copyright (C) 2001-2008, Martin Schoeberl (martin@jopdesign.com)
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package test;
import com.jopdesign.sys.Const;
import com.jopdesign.sys.Native;
//
// Clock.java
//
public class Blinker {
public static void main( String s[] ) {
Native.wr(0, Const.IO_WD); // make WD happy
Native.wr(1, Const.IO_WD);
Native.wr(0, Const.IO_WD);
time();
}
static void time() {
int next;
int h, m, s, ms;
h = m = s = ms = 0;
next = 0;
s = -1;
for (;;) {
++ms;
if (ms==1000) {
ms = 0;
++s;
if (s==60) {
s = 0;
++m;
}
if (m==60) {
m = 0;
++h;
}
if (h==24) h = 0;
Native.wr(s & 1, Const.IO_WD);
}
Native.wr(~s & 1, Const.IO_WD);
Native.wr(s & 1, Const.IO_WD);
next = waitForNextInterval(next);
}
}
static int waitForNextInterval(int next) {
final int INTERVAL = 20000; // one ms
if (next==0) {
next = Native.rd(Const.IO_CNT)+INTERVAL;
} else {
next += INTERVAL;
}
while (next-Native.rd(Const.IO_CNT) >= 0)
;
return next;
}
}