Subject:
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rotation sensor question
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Newsgroups:
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lugnet.robotics.rcx.java
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Date:
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Fri, 20 Jul 2001 13:34:39 GMT
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Viewed:
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2542 times
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I installed leJOS, got it up and running, then read on the sourceforge site
a support question about the rotation sensor, so I decided to test it out.
I wrote a first cut at it and it didn't work, just like the support question
suggested:
import josx.platform.rcx.*;
public class Bot
implements SensorConstants
{
public static void main (String[] arg)
throws Exception
{
Sensor.S2.setTypeAndMode (SENSOR_TYPE_ROT, SENSOR_MODE_ANGLE);
Sensor.S2.activate();
for(;;) {
LCD.showNumber(Sensor.S2.readValue());
}
}
}
Then I decided to read the fine manual, and tried it again:
import josx.platform.rcx.*;
public class Bot2
implements SensorConstants
{
public static void main (String[] arg)
throws Exception
{
// Sensor.S2.setTypeAndMode (3, 0x80);
Sensor.S2.setTypeAndMode (SENSOR_TYPE_ROT, SENSOR_MODE_ANGLE);
Sensor.S2.activate();
Sensor.S2.addSensorListener (new SensorListener(){
public void stateChanged (Sensor src, int oldValue, int newValue) {
LCD.showNumber (newValue);
try {
Thread.sleep (100);
} catch (InterruptedException e) {
// ignore
}
}
});
}
}
And it worked just fine. Good. But why did the first attempt fail?
Thanks, Paul.
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Message has 2 Replies:
 | | Re: rotation sensor question
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| I don't know the answer to your specific question, but there is more information about the rotation sensor in the tinyvm-discussion archives, which you can find from lejos.sourceforge.net by clicking on mailing lists. The rotation sensor has trouble (...) (23 years ago, 31-Jul-01, to lugnet.robotics.rcx.java)
| | | Re: rotation sensor question
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| Hi there, (...) What happened? nothing appeared in the LCD? This looks 99% like the example I did yesterday - except that I put in a "LCD.refresh()" after the #showNumber call. I run 1.0.2 RC4 under Linux... // Martin (23 years ago, 4-Sep-01, to lugnet.robotics.rcx.java)
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