Watchdog programming error

[theprgramerdude]

Hello everyone. I'm from team 2503 in Brainerd, Minnesota. Being the only student on the team with prior programming experience, it was up to me to design our program code this year. I am using Java this year, as it's simpler in terms of references (I originally learned C# as my first real computer language). However, I keep encountering a "watchdog not fed error on the console every time I go to run the code. This has still occurred after the 2.1/1.1 Labview/DS updates. I cannot for the life of me figure out the reason for this. The default code works fine, yet whatever I build myself does not

Some of the coding examples Ive tried are as follows:

I've added this section into the default code's teleopPeriodic method just to test whether I was doing something wrong with my programming. It works perfectly.
if (m_rightStick.getTrigger())
{
m_robotDrive.arcadeDrive(1.0, 0.0);
}

If I add this following line, however, the motor runs for about a tenth of a second, then a watchdog error trips and everything shuts down. I did modify the original RobotDrive to work on only ports 1 and 2, as we have only two drive motors. This let everything still work fine. These lines were added simply to test theories, and I know its very ugly in practice).
if (m_rightStick.getTop(Hand.kLeft))
{
RobotDrive pulley = new RobotDrive(3,4);
stuper.arcadeDrive(1.0, 0.0);

}


The last code segment is a full iterative robot template I've been using, and also trips the watchdog for unknown reasons. Any help will be much appreciated. Thanks. (note: I've omitted the import commands to save space).

public class RobotTemplate extends IterativeRobot {
/**
* This function is run when the robot is first started up and should be
* used for any initialization code.
*/

Jaguar right_drive_jaguar;
Jaguar left_drive_jaguar;
Jaguar pulley_motor;
Joystick loneRanger;
Watchdog idiot;
Compressor airthing;
Solenoid springLatcheron;
Solenoid springLatcherback;
Solenoid superKicker;
boolean on_off_kicker;
AxisCamera supercamerathing;

double x_value;
double y_value;
double leftdriver;
double rightdriver;


public void RobotTemplate() {
//create all objects
this.right_drive_jaguar = new Jaguar(1);
this.left_drive_jaguar = new Jaguar(2);
this.pulley_motor = new Jaguar(3);

this.loneRanger = new Joystick(1);
this.airthing = new Compressor(1,1);

this.on_off_kicker = true;

this.superKicker = new Solenoid(1);
this.springLatcheron = new Solenoid(2);
this.springLatcherback = new Solenoid(3);

//this.idiot = Watchdog.getInstance();
Watchdog.getInstance().feed();
//set all values

right_drive_jaguar.set(0);
left_drive_jaguar.set(0);
pulley_motor.set(0);

superKicker.set(false);
springLatcherback.set(true);
springLatcheron.set(true);

airthing.start();




//this.supercamerathing = AxisCamera.getInstance();








}


public void robotInit() {

}

public void disabledPeriodic() {
//idiot.feed();
Watchdog.getInstance().feed();
}
/**
* This function is called periodically during autonomous
*/
public void autonomousPeriodic() {
//idiot.feed();
right_drive_jaguar.set(.2);
left_drive_jaguar.set(.2);
Watchdog.getInstance().feed();
}

/**
* This function is called periodically during operator control
*/

public void teleopInit() {
right_drive_jaguar.set(0);
left_drive_jaguar.set(0);

}


public void teleopPeriodic() {
//idiot.feed();
Watchdog.getInstance().feed();
this.x_value = loneRanger.getX();
this.y_value = loneRanger.getY();
right_drive_jaguar.set(x_value);
left_drive_jaguar.set(y_value);
if (loneRanger.getTrigger(Hand.kLeft))
{
pulley_motor.set(.99);
}
else
{
pulley_motor.set(0);
}
}

}

[Ziggy]

I'm also using the iterative style for my robot and cannot figure out why the watchdog is still hungry... it's so annoying >.>

[Twisted eric]

public void teleopInit() {
right_drive_jaguar.set(0);
left_drive_jaguar.set(0);
Watchdog.getInstance().feed();
}

try that it should work when they say feed the Watchdog They MEAN FEED THE WATCH DOG.

[theprgramerdude]

Thanks for the support. I tried the code as you posted it, but no dice. I did see an initial watchdog error, but then it ran with the statement teleop enabled for all of .1 seconds. After that, it showed the same watchdog not fed error, and I had to restart the robot to get any control again. However, I was running developer at the time with the driver station application as a popup, and Netbeans recorded the following output when the error occurred:
[cRIO] Default RobotIterativeBase:isabledInit() method running
[cRIO] Disabled_Init() completed
[cRIO] java.lang.NullPointerException
[cRIO] at java.lang.Throwable.<init>(Throwable.java:88)
[cRIO] at java.lang.Exception.<init>(Exception.java:44)
[cRIO] at java.lang.RuntimeException.<init>(RuntimeException .java:48)
[cRIO] at java.lang.NullPointerException.<init>(NullPointerE xception.java:54)
[cRIO] at com.sun.squawk.VM.nullPointerException(VM.java:391 )
[cRIO] at edu.wpi.first.wpilibj.templates.RobotTemplate.tele opInit(RobotTemplate.java:119)
[cRIO] at edu.wpi.first.wpilibj.IterativeRobot.startCompetit ion(IterativeRobot.java:171)
[cRIO] at edu.wpi.first.wpilibj.RobotBase.startApp(RobotBase .java:132)
[cRIO] at javax.microedition.midlet.MIDletTunnelImpl.callSta rtApp(MIDletTunnelImpl.java:60)
[cRIO] at com.sun.squawk.imp.MIDletMainWrapper.main(MIDletMa inWrapper.java:110)
[cRIO] at com.sun.squawk.Klass.main(Klass.java:2997)
[cRIO] at com.sun.squawk.Isolate.run(Isolate.java:1554)
[cRIO] at java.lang.Thread.run(Thread.java:231)
[cRIO] at com.sun.squawk.VMThread.callRun(VMThread.java:1499 )
[cRIO] at com.sun.squawk.VM.callRun(VM.java:305)

[nikRbokRz]

My team has been using "getWatchdog().feed();" in RobotTemplate, which for some reason seems to work. See if that works - I'm not exactly sure where "getWatchdog()" is in the source, but it seems to get the job done.

Hope this works... up until now, we actually had done "getWatchdog().setEnable(false)" but we figured using a Watchdog would be good practice

[theprgramerdude]

Well, after a bit of testing today, I've narrowed down the problem. It appears that the watchdog itself does not cause an error; in fact, I believe it's simply acting the way it's designed to. It's timing out after there's a call error somewhere when switching to either autonomous or teleoperated mode. One of the methods or calls might be causing some error, as evidenced by the Netbeans output error. It'll take a little while longer to isolate the exact cause of this. Simply telling the Teleop periodic default to feed the watchdog only does not fix the issue in my original code, yet deleting/commenting out my reference variables and the variables in the constructor do fix the issue when switching to Teleop.