| 1 | package org.usfirst.frc.team3501.robot.subsystems; |
| 2 | |
| 3 | import org.usfirst.frc.team3501.robot.Constants; |
| 4 | |
| 5 | import edu.wpi.first.wpilibj.AnalogPotentiometer; |
| 6 | import edu.wpi.first.wpilibj.CANTalon; |
| 7 | import edu.wpi.first.wpilibj.command.Subsystem; |
| 8 | |
| 9 | /*** |
| 10 | * The IntakeArm consists of two rollers that are controlled by one motor, with |
| 11 | * a potentiometer on it. |
| 12 | * |
| 13 | * The motor controls the rollers, making them roll forwards and backwards. The |
| 14 | * Intake rollers are on the back of the robot. As the rollers run, they intake |
| 15 | * the ball. |
| 16 | * |
| 17 | * @author superuser |
| 18 | * |
| 19 | */ |
| 20 | |
| 21 | public class IntakeArm extends Subsystem { |
| 22 | |
| 23 | private CANTalon intakeRoller; |
| 24 | private CANTalon intakeArm; |
| 25 | private AnalogPotentiometer intakePot; |
| 26 | private double[] potAngles = { 0, 45, 90 }; |
| 27 | |
| 28 | public IntakeArm() { |
| 29 | intakeRoller = new CANTalon(Constants.IntakeArm.ROLLER_PORT); |
| 30 | intakeArm = new CANTalon(Constants.IntakeArm.ARM_PORT); |
| 31 | intakePot = new AnalogPotentiometer(Constants.IntakeArm.POT_CHANNEL, |
| 32 | Constants.IntakeArm.FULL_RANGE, Constants.IntakeArm.OFFSET); |
| 33 | } |
| 34 | |
| 35 | /*** |
| 36 | * This method sets the voltage of the motor to intake the ball. The voltage |
| 37 | * values are constants in Constants class |
| 38 | */ |
| 39 | public void intakeBall() { |
| 40 | intakeRoller.set(Constants.IntakeArm.INTAKE_SPEED); |
| 41 | } |
| 42 | |
| 43 | /*** |
| 44 | * This method sets the voltage of the motor to output the ball. The voltage |
| 45 | * values are constants in Constants class |
| 46 | */ |
| 47 | public void outputBall() { |
| 48 | intakeRoller.set(Constants.IntakeArm.OUTPUT_SPEED); |
| 49 | } |
| 50 | |
| 51 | public void stopRollers() { |
| 52 | intakeRoller.set(0); |
| 53 | } |
| 54 | |
| 55 | /*** |
| 56 | * This method gets you the current voltage of the motor that controls the |
| 57 | * intake arm roller. The range of voltage is from [-1,1]. A negative voltage |
| 58 | * makes the motor run backwards. |
| 59 | * |
| 60 | * @return Returns the voltage of the motor that controls the roller. The |
| 61 | * range of the voltage goes from [-1,1]. A negative voltage indicates |
| 62 | * that the motor is running backwards. |
| 63 | */ |
| 64 | |
| 65 | public double getRollerVoltage() { |
| 66 | return intakeRoller.get(); |
| 67 | } |
| 68 | |
| 69 | /*** |
| 70 | * This method sets the voltage of the arm motor. The range is from [-1,1]. A |
| 71 | * negative voltage makes the direction of the motor go backwards. |
| 72 | * |
| 73 | * @param voltage |
| 74 | * The voltage that you set the motor at. The range of the voltage of |
| 75 | * the arm motor is from [-1,1]. A negative voltage makes the |
| 76 | * direction of the motor go backwards. |
| 77 | */ |
| 78 | |
| 79 | public void setArmSpeed(double voltage) { |
| 80 | if (voltage > 1) |
| 81 | voltage = 1; |
| 82 | else if (voltage < -1) |
| 83 | voltage = -1; |
| 84 | |
| 85 | intakeArm.set(voltage); |
| 86 | } |
| 87 | |
| 88 | /*** |
| 89 | * This method gets you the current voltage of the motor that controls the |
| 90 | * intake arm. The range of voltage is from [-1,1]. A negative voltage makes |
| 91 | * the motor run backwards. |
| 92 | * |
| 93 | * @return Returns the voltage of the motor that controls the arm. The range |
| 94 | * of the voltage goes from [-1,1]. A negative voltage indicates that |
| 95 | * the motor is running backwards. |
| 96 | */ |
| 97 | |
| 98 | public double getArmSpeed() { |
| 99 | return intakeArm.get(); |
| 100 | } |
| 101 | |
| 102 | /*** |
| 103 | * This method checks to see if the presence of the ball inside is true or |
| 104 | * false. |
| 105 | * |
| 106 | * @return Returns whether the ball is inside as true or false |
| 107 | */ |
| 108 | |
| 109 | public boolean isBallInside() { |
| 110 | return true; |
| 111 | } |
| 112 | |
| 113 | /*** |
| 114 | * This method checks to see if the motors controlling the rollers are |
| 115 | * currently running. |
| 116 | * |
| 117 | * @return Returns whether the motors are currently running, and returns the |
| 118 | * state of the condition (true or false). |
| 119 | * |
| 120 | */ |
| 121 | |
| 122 | public boolean areRollersRolling() { |
| 123 | if (Math.abs(getRollerVoltage()) < 0.02) |
| 124 | return false; |
| 125 | return true; |
| 126 | } |
| 127 | |
| 128 | /*** |
| 129 | * This method gets the angle of the potentiometer on the Intake Arm. |
| 130 | * |
| 131 | * @return angle of potentiometer |
| 132 | */ |
| 133 | |
| 134 | public double getArmAngle() { |
| 135 | return intakePot.get() + Constants.IntakeArm.ZERO_ANGLE; |
| 136 | } |
| 137 | |
| 138 | public void stop() { |
| 139 | setArmSpeed(0); |
| 140 | } |
| 141 | |
| 142 | public double getAngleForLevel(double targetLevel) { |
| 143 | return potAngles[(int) (targetLevel - 1)]; |
| 144 | } |
| 145 | |
| 146 | @Override |
| 147 | protected void initDefaultCommand() { |
| 148 | |
| 149 | } |
| 150 | } |