Programming the teleop

Technical Java
1

My programming team are stuck

like the title says I’m tying to program I don’t know what I’m missing

code

package edu.wpi.first.wpilibj.templates;

import edu.wpi.first.wpilibj.Joystick;
import edu.wpi.first.wpilibj.RobotDrive;
import edu.wpi.first.wpilibj.SimpleRobot;
import edu.wpi.first.wpilibj.Timer;
import edu.wpi.first.wpilibj.Watchdog;

public class Demonized extends SimpleRobot {

RobotDrive drive = new RobotDrive(1, 2);
Joystick leftStick = new Joystick(1);
Joystick rightStick = new Joystick(2);
Watchdog Fenrir = Watchdog.getInstance();

public void autonomous() {
  while(true && isAutonomous() && isEnabled())
    for (int i = 0; i < 4; i++) {
            Fenrir.feed();
            drive.drive(0.5, 0.0);  // drive 50% fwd 0% turn
            Fenrir.feed();
            drive.drive(0.0, 0.5);
    }
    drive.drive(0.0, 0.0);  // drive 0% fwd, 0% turn
}

public void operatorControl() {
    while (true && isOperatorControl() && isEnabled()) // loop until change
    {
        drive.tankDrive(leftStick, rightStick);
        Timer.delay(0.005);
        Fenrir.feed();
    }
}

}

help will be much appreciated

team 581

2

You need to “feed” the watchdog timer in the operatorControl() method. I’m not sure if that’s what you’re seeing, but I would expect that you are getting a “Watchdog not fed” message on the driver station.

Insert a Fenrir.feed() in the loop with the drive.tankDrive() call.

3

Thank you that was what i was missing any help with the pneumatic compressor.

4

code

package edu.wpi.first.wpilibj.templates;

import edu.wpi.first.wpilibj.Joystick;
import edu.wpi.first.wpilibj.RobotDrive;
import edu.wpi.first.wpilibj.SimpleRobot;
import edu.wpi.first.wpilibj.Timer;
import edu.wpi.first.wpilibj.Watchdog;
import edu.wpi.first.wpilibj.Compressor;

public class Demonized extends SimpleRobot {

RobotDrive drive = new RobotDrive(1, 2);
Joystick leftStick = new Joystick(1);
Joystick rightStick = new Joystick(2);
Watchdog Fenrir = Watchdog.getInstance();
Compressor Siberian = new Compressor(1,1);

public void autonomous() {
while(true && isAutonomous() && isEnabled())
for (int i = 0; i < 4; i++) {
Fenrir.feed();
drive.drive(0.5, 0.0); // drive 50% fwd 0% turn
Fenrir.feed();
drive.drive(0.0, 0.5);
}
drive.drive(0.0, 0.0); // drive 0% fwd, 0% turn
}

public void operatorControl() {
while (true && isOperatorControl() && isEnabled()) // loop until change
{
drive.tankDrive(leftStick, rightStick);
Timer.delay(0.005);
Fenrir.feed();
}
}
}

new code update

5

add a Siberian.start() to the outside of your while loop

6

which wiled loop auto or tele op

OH
and can everyone help with sensing pressure and every thing first time using java.

7

i reccomend you make a setupRobot method for stuff like that.

insert the following inbetween the autonomous and teleop code

void setUpRobot() {
Siberian.start();
Fernir.feed();
}

then just add setUpRobot(); to your teleop and autonomous code.

That should fix it :smiley:

8

Thanks

do you know how to sense pressure value and auto shut off

Thanks in advance and sorry for so-many questions.

9

Dude, its ok, i had the same questions.

it will automatically shut off as long as the wiring is correct (check the diagrams), so programming can now rest easy. :smiley:

10

in the pneumatics manual here (http://www.usfirst.org/uploadedFiles/Community/FRC/Game_and_Season__Info/2010_Assets/2010%20Pneumatics%20Manual%20Rev%20-.pdf)

says that there is no default program in the cRIO to control
the compressor power.

11

its always worked for us