nullPointer Error

[fireXtract]

EDIT: after already posting I realized I titled this wrong. I should have posted "Resource already allocated Error"

My github for the code I am having issues with is here. (https://github.com/FairmontTeam2847/Stronghold2016/tree/master/src/org/usfirst/frc/team2847/robot)

I have finally pushed code to our board, and I have been getting errors back through the Riolog. The error:
ERROR Unhandled exception: java.lang.RuntimeException: Code: -1029. HAL: Resource already allocated at [edu.wpi.first.wpilibj.hal.PWMJNI.allocatePWMChanne l(Native Method), edu.wpi.first.wpilibj.PWM.initPWM(PWM.java:117), edu.wpi.first.wpilibj.PWM.<init>(PWM.java:134), edu.wpi.first.wpilibj.SafePWM.<init>(SafePWM.java:35), edu.wpi.first.wpilibj.Talon.<init>(Talon.java:51), edu.wpi.first.wpilibj.RobotDrive.<init>(RobotDrive.java:121), org.usfirst.frc.team2847.robot.subsystems.Drivetra in.<init>(Drivetrain.java:28), org.usfirst.frc.team2847.robot.Robot.robotInit(Rob ot.java:47), edu.wpi.first.wpilibj.IterativeRobot.startCompetit ion(IterativeRobot.java:72), edu.wpi.first.wpilibj.RobotBase.main(RobotBase.jav a:241)]
WARNING: Robots don't quit!
---> The startCompetition() method (or methods called by it) should have handled the exception above.



The Drivetrain subsystem can be found in the github or here is an excerpt:

package org.usfirst.frc.team2847.robot.subsystems;

import org.usfirst.frc.team2847.robot.Robot;
import org.usfirst.frc.team2847.robot.RobotMap;
import org.usfirst.frc.team2847.robot.commands.JoystickDr ive;

import edu.wpi.first.wpilibj.RobotDrive;
import edu.wpi.first.wpilibj.command.PIDSubsystem;

/**
*
*/
public class Drivetrain extends PIDSubsystem {

// Initialize your subsystem here
double[] greenAreasArray = {};
double[] greenXArray = {};
double[] greenYArray = {};

double maxArea = 0;
double greenX = 0;
double greenY = 0;
double offsetX;

int arrayNum = 0;

// create our drivetrain object
RobotDrive driveTrain = new RobotDrive(RobotMap.frontLeftDrive, RobotMap.rearLeftDrive, RobotMap.frontRightDrive,
RobotMap.rearRightDrive);

public Drivetrain() {
// Use these to get going:
// setSetpoint() - Sets where the PID controller should move the system
// to
// enable() - Enables the PID controller.
super("Drivetrain", RobotMap.kDriveP, RobotMap.kDriveI, RobotMap.kDriveD);
setPercentTolerance(5.0);
}
// Put methods for controlling this subsystem
// here. Call these from Commands.

public void initDefaultCommand() {
// Set the default command for a subsystem here.
setDefaultCommand(new JoystickDrive());
}

// make the method for our drivetrain
public void manDrive(double leftValue, double rightValue) {
driveTrain.tankDrive(leftValue, rightValue);
}

/*
* starts a counter and for each item in the number array compares it to the
* max value from before in the end of the loop we should have max = the
* biggest value in our array we do this to find out which contour is our
* target this should filter out any minor interference in the camera
*/
public void findMaxArea() {
Robot.table.getNumberArray("area", greenAreasArray);
for (int counter = 0; counter < greenAreasArray.length; counter++) {
if (greenAreasArray[counter] > maxArea) {
maxArea = greenAreasArray[counter];
arrayNum = counter;
}
}
System.out.println(maxArea);
}

public void updateArea() {
Robot.table.getNumberArray("area", greenAreasArray);
findMaxArea();
}

public void useCenter() {
this.updateArea();
Robot.table.getNumberArray("centerX", greenXArray);
Robot.table.putNumberArray("centerY", greenYArray);
greenX = greenXArray[arrayNum];
greenY = greenYArray[arrayNum];
}

public double offsetCalc() {
this.useCenter();
offsetX = 320 - greenX;
return offsetX;
}

protected double returnPIDInput() {
// Return your input value for the PID loop
// e.g. a sensor, like a potentiometer:
// yourPot.getAverageVoltage() / kYourMaxVoltage;
return greenY;
}

protected void usePIDOutput(double output) {
// Use output to drive your system, like a motor
// e.g. yourMotor.set(output);
if (offsetCalc() > 0) {
this.manDrive(output * (greenX / 320), output);
} else if (offsetCalc() < 0) {
this.manDrive(output, output * (greenX / 320));
} else {
this.manDrive(output, output);
}
}
}


My thought was that I had declared the drivetrain wrong, but I am not sure after trying a few different ways. Any help would be greatly appreciated :]

[Dan Waxman]

Looking very quickly, it looks like you're attempting to allocate your servo to the same PWM port as your frontRightDrive motor.

[fireXtract]

THANK YOU! For some reason I thought servos were plugged into a different place on the roboRio! Thank you very much sir!

[Dan Waxman]

THANK YOU! For some reason I thought servos were plugged into a different place on the roboRio! Thank you very much sir!
Haha no problem man glad I could help out