1 package org
.usfirst
.frc
.team3501
.robot
.subsystems
;
3 import org
.usfirst
.frc
.team3501
.robot
.Constants
;
4 import org
.usfirst
.frc
.team3501
.robot
.commands
.driving
.JoystickDrive
;
5 import org
.usfirst
.frc
.team3501
.robot
.utils
.PIDController
;
7 import com
.ctre
.CANTalon
;
9 import edu
.wpi
.first
.wpilibj
.ADXRS450_Gyro
;
10 import edu
.wpi
.first
.wpilibj
.DoubleSolenoid
;
11 import edu
.wpi
.first
.wpilibj
.DoubleSolenoid
.Value
;
12 import edu
.wpi
.first
.wpilibj
.Encoder
;
13 import edu
.wpi
.first
.wpilibj
.RobotDrive
;
14 import edu
.wpi
.first
.wpilibj
.command
.Subsystem
;
16 public class DriveTrain
extends Subsystem
{
17 public static double driveP
, driveI
, driveD
;
18 public static double turnP
, turnI
, turnD
;
19 public static double driveStraightGyroP
= 0.01;
21 public static final String DRIVE_P_Val
= "DriveP";
22 public static final String DRIVE_I_Val
= "DriveI";
23 public static final String DRIVE_D_Val
= "DriveD";
24 public static final String DRIVE_GYRO_P_Val
= "DriveGyroP";
25 public static final String DRIVE_TARGET_DIST
= "SET_DIST";
26 public static final String MAX_TIME_OUT
= "MaxTimeOut";
27 public static final String GYRO_P_Val
= "GyroP";
28 public static final String GYRO_I_Val
= "GyroI";
29 public static final String GYRO_D_Val
= "GyroD";
30 public static final String GYRO_TARGET_ANGLE
= "SET_ANGLE";
31 public static final int PID_ERROR
= -1;
32 public static final int TARGET_DISTANCE_ERROR
= -1;
34 public static final double WHEEL_DIAMETER
= 4; // inches
35 public static final int ENCODER_PULSES_PER_REVOLUTION
= 256;
36 public static final double INCHES_PER_PULSE
= WHEEL_DIAMETER
* Math
.PI
37 / ENCODER_PULSES_PER_REVOLUTION
;
39 public static final double MAINTAIN_CLIMBED_POSITION
= 0;
40 public static final double TIME_TO_CLIMB_FOR
= 0;
41 public static final double CLIMBER_SPEED
= 0;
43 private static DriveTrain driveTrain
;
45 private final CANTalon frontLeft
, frontRight
, rearLeft
, rearRight
;
46 private final RobotDrive robotDrive
;
47 private final Encoder leftEncoder
, rightEncoder
;
48 private final DoubleSolenoid leftGearPiston
, rightGearPiston
;
50 private ADXRS450_Gyro imu
;
52 private PIDController driveController
;
53 private PIDController gyroController
;
55 private boolean isClimbing
;
56 public boolean shouldBeClimbing
= false;
58 private DriveTrain() {
61 driveController
= new PIDController(driveP
, driveI
, driveD
);
62 gyroController
= new PIDController(turnP
, turnI
, turnD
);
67 frontLeft
= new CANTalon(Constants
.DriveTrain
.FRONT_LEFT
);
68 frontRight
= new CANTalon(Constants
.DriveTrain
.FRONT_RIGHT
);
69 rearLeft
= new CANTalon(Constants
.DriveTrain
.REAR_LEFT
);
70 rearRight
= new CANTalon(Constants
.DriveTrain
.REAR_RIGHT
);
73 leftEncoder
= new Encoder(Constants
.DriveTrain
.ENCODER_LEFT_A
,
74 Constants
.DriveTrain
.ENCODER_LEFT_B
, false, Encoder
.EncodingType
.k4X
);
75 rightEncoder
= new Encoder(Constants
.DriveTrain
.ENCODER_RIGHT_A
,
76 Constants
.DriveTrain
.ENCODER_RIGHT_B
, false, Encoder
.EncodingType
.k4X
);
78 leftEncoder
.setDistancePerPulse(INCHES_PER_PULSE
);
79 rightEncoder
.setDistancePerPulse(INCHES_PER_PULSE
);
82 robotDrive
= new RobotDrive(frontLeft
, rearLeft
, frontRight
, rearRight
);
84 this.imu
= new ADXRS450_Gyro(Constants
.DriveTrain
.GYRO_PORT
);
86 // TODO: Not sure if MODULE_NUMBER should be the same for both
87 leftGearPiston
= new DoubleSolenoid(Constants
.DriveTrain
.PISTON_MODULE
,
88 Constants
.DriveTrain
.LEFT_GEAR_PISTON_FORWARD
,
89 Constants
.DriveTrain
.LEFT_GEAR_PISTON_REVERSE
);
90 rightGearPiston
= new DoubleSolenoid(Constants
.DriveTrain
.PISTON_MODULE
,
91 Constants
.DriveTrain
.RIGHT_GEAR_PISTON_FORWARD
,
92 Constants
.DriveTrain
.RIGHT_GEAR_PISTON_REVERSE
);
95 public PIDController
getDriveController() {
96 return this.driveController
;
99 public PIDController
getGyroController() {
100 return this.gyroController
;
103 public static DriveTrain
getDriveTrain() {
104 if (driveTrain
== null) {
105 driveTrain
= new DriveTrain();
111 public void setMotorValues(final double left
, final double right
) {
115 frontRight
.set(-right
);
116 rearRight
.set(-right
);
119 public void joystickDrive(final double thrust
, final double twist
) {
120 robotDrive
.arcadeDrive(thrust
, twist
, true);
124 setMotorValues(0, 0);
127 public double getLeftMotorVal() {
128 return (frontLeft
.get() + rearLeft
.get()) / 2;
131 public double getRightMotorVal() {
132 return (frontRight
.get() + rearRight
.get()) / 2;
137 public double getLeftEncoderDistance() {
138 return leftEncoder
.getDistance();
141 public double getRightEncoderDistance() {
142 return rightEncoder
.getDistance();
145 public void printEncoderOutput() {
146 System
.out
.println("left: " + getLeftEncoderDistance());
147 System
.out
.println("right: " + getRightEncoderDistance());
148 // System.out.println(getAvgEncoderDistance());
151 public double getAvgEncoderDistance() {
152 return (leftEncoder
.getDistance() + rightEncoder
.getDistance()) / 2;
155 public void resetEncoders() {
157 rightEncoder
.reset();
160 public double getLeftSpeed() {
161 return leftEncoder
.getRate();
164 public double getRightSpeed() {
165 return rightEncoder
.getRate();
168 public double getSpeed() {
169 return (getLeftSpeed() + getRightSpeed()) / 2.0;
172 // ------Gyro------//
173 public double getAngle() {
174 return this.imu
.getAngle();
177 public void resetGyro() {
182 * @return a value that is the current setpoint for the piston kReverse or
185 public Value
getLeftGearPistonValue() {
186 return leftGearPiston
.get();
190 * @return a value that is the current setpoint for the piston kReverse or
193 public Value
getRightGearPistonValue() {
194 return rightGearPiston
.get();
198 * Changes the ball shift gear assembly to high
200 public void setHighGear() {
201 changeGear(Constants
.DriveTrain
.HIGH_GEAR
);
205 * Changes the ball shift gear assembly to low
207 public void setLowGear() {
208 changeGear(Constants
.DriveTrain
.LOW_GEAR
);
212 * Changes the gear to a DoubleSolenoid.Value
214 private void changeGear(DoubleSolenoid
.Value gear
) {
215 leftGearPiston
.set(gear
);
216 rightGearPiston
.set(gear
);
220 protected void initDefaultCommand() {
221 setDefaultCommand(new JoystickDrive());