class SwerveModule():
def __init__(self, drive, steer,
absolute=True, reverse_drive=False,
reverse_steer=False, zero_reading=0,
drive_encoder=False, reverse_drive_encoder=False):
# Initialise private motor controllers
self._drive = CANTalon(drive)
self.reverse_drive = reverse_drive
self._steer = CANTalon(steer)
self.drive_encoder = drive_encoder
self._distance_offset = 0 # Offset the drive distance counts
# Set up the motor controllers
# Different depending on whether we are using absolute encoders or not
if absolute:
self.counts_per_radian = 1024.0 / (2.0 * math.pi)
self._steer.setFeedbackDevice(CANTalon.FeedbackDevice.AnalogEncoder)
self._steer.changeControlMode(CANTalon.ControlMode.Position)
self._steer.reverseSensor(reverse_steer)
self._steer.reverseOutput(not reverse_steer)
# Read the current encoder position
self._steer.setPID(20.0, 0.0, 0.0) # PID values for abs
self._offset = zero_reading - 256.0
if reverse_steer:
self._offset = -self._offset
else:
self._steer.changeControlMode(CANTalon.ControlMode.Position)
self._steer.setFeedbackDevice(CANTalon.FeedbackDevice.QuadEncoder)
self._steer.setPID(6.0, 0.0, 0.0) # PID values for rel
self.counts_per_radian = (497.0 * (40.0 / 48.0) * 4.0 /
(2.0 * math.pi))
self._offset = self.counts_per_radian*2.0*math.pi/4.0
self._steer.setPosition(0.0)
if self.drive_encoder:
self.drive_counts_per_rev = 80*6.67
self.drive_counts_per_metre = (self.drive_counts_per_rev /
(math.pi * 0.1016))
self.drive_max_speed = 570
self._drive.setFeedbackDevice(CANTalon.FeedbackDevice.QuadEncoder)
self.changeDriveControlMode(CANTalon.ControlMode.Speed)
self._drive.reverseSensor(reverse_drive_encoder)
else:
self.drive_counts_per_rev = 0.0
self.drive_max_speed = 1.0
self.changeDriveControlMode(CANTalon.ControlMode.PercentVbus)
self._drive.setVoltageRampRate(150.0)
def changeDriveControlMode(self, control_mode):
if self._drive.getControlMode is not control_mode:
if control_mode == CANTalon.ControlMode.Speed:
self._drive.setPID(1.0, 0.00, 0.0, 1023.0 / self.drive_max_speed)
elif control_mode == CANTalon.ControlMode.Position:
self._drive.setPID(0.1, 0.0, 0.0, 0.0)
self._drive.changeControlMode(control_mode)
@property
def direction(self):
# Read the current direction from the controller setpoint
setpoint = self._steer.getSetpoint()
return float(setpoint - self._offset) / self.counts_per_radian
@property
def speed(self):
# Read the current speed from the controller setpoint
setpoint = self._drive.getSetpoint()
return float(setpoint)
@property
def distance(self):
# Read the current position from the encoder and remove the offset
return self._drive.getEncPosition() - self._distance_offset
def zero_distance(self):
self._distance_offset = self._drive.getEncPosition()
def steer(self, direction, speed=None):
if self.drive_encoder:
self.changeDriveControlMode(CANTalon.ControlMode.Speed)
else:
self.changeDriveControlMode(CANTalon.ControlMode.PercentVbus)
# Set the speed and direction of the swerve module
# Always choose the direction that minimises movement,
# even if this means reversing the drive motor
if speed is None:
# Force the modules to the direction specified - don't
# go to the closest one and reverse.
delta = constrain_angle(direction - self.direction) # rescale to +/-pi
self._steer.set((self.direction + delta) *
self.counts_per_radian + self._offset)
self._drive.set(0.0)
return
if abs(speed) > 0.05:
direction = constrain_angle(direction) # rescale to +/-pi
current_heading = constrain_angle(self.direction)
delta = min_angular_displacement(current_heading, direction)
if self.reverse_drive:
speed = -speed
if abs(constrain_angle(self.direction - direction)) < math.pi / 6.0:
self._drive.set(speed*self.drive_max_speed)
else:
self._drive.set(-speed*self.drive_max_speed)
self._steer.set((self.direction + delta) *
self.counts_per_radian + self._offset)
else:
self._drive.set(0.0)
class IntakeLauncher(Subsystem):
"""A class to manage/control all aspects of shooting boulders.
IntakeLauncher is comprised of:
aimer: to raise & lower the mechanism for ball intake and shooting
wheels: to suck or push the boulder
launcher: to push boulder into the wheels during shooting
limit switches: to detect if aimer is at an extreme position
potentiometer: to measure our current aim position
boulderSwitch: to detect if boulder is present
Aiming is controlled via two modes
1: driver/interactive: aimMotor runs in VBUS mode to change angle
2: auto/vision control: aimMotor runs in closed-loop position mode
to arrive at a designated position
"""
k_launchMin = 684.0 # manual calibration value
k_launchMinDegrees = -11 # ditto (vestigial)
k_launchMax = 1024.0 # manual calibration value
k_launchMaxDegrees = 45 # ditto (vestigial)
k_launchRange = k_launchMax - k_launchMin
k_launchRangeDegrees = k_launchMaxDegrees - k_launchMinDegrees
k_aimDegreesSlop = 2 # TODO: tune this
k_intakeSpeed = -0.60 # pct vbux
k_launchSpeedHigh = 1.0 # pct vbus
k_launchSpeedLow = 0.7
k_launchSpeedZero = 0
k_servoLeftLaunchPosition = 0.45 # servo units
k_servoRightLaunchPosition = 0.65
k_servoLeftNeutralPosition = 0.75
k_servoRightNeutralPosition = 0.4
k_aimMultiplier = 0.5
k_maxPotentiometerError = 5 # potentiometer units
# launcher positions are measured as a percent of the range
# of the potentiometer..
# intake: an angle approriate for intaking the boulder
# neutral: an angle appropriate for traversing the lowbar
# travel: an angle appropriate for traversing the rockwall, enableLimitSwitch
# highgoal threshold: above which we shoot harder
k_launchIntakeRatio = 0.0
k_launchTravelRatio = 0.51
k_launchNeutralRatio = 0.51
k_launchHighGoalThreshold = 0.69
def __init__(self, robot, name=None):
super().__init__(name=name)
self.robot = robot
self.launchMin = self.k_launchMin
self.launchMax = self.k_launchMax
self.launchRange = self.launchMax - self.launchMin
self.controlMode = None
self.visionState = robot.visionState
self.intakeLeftMotor = CANTalon(robot.map.k_IlLeftMotorId)
self.intakeLeftMotor.changeControlMode(CANTalon.ControlMode.PercentVbus)
self.intakeLeftMotor.reverseSensor(True)
self.intakeLeftMotor.setSafetyEnabled(False)
self.intakeRightMotor = CANTalon(robot.map.k_IlRightMotorId)
self.intakeRightMotor.changeControlMode(CANTalon.ControlMode.PercentVbus)
self.intakeRightMotor.setSafetyEnabled(False)
self.aimMotor = CANTalon(robot.map.k_IlAimMotorId)
# LiveWindow.addActuator("IntakeLauncher", "AimMotor", self.aimMotor)
if self.aimMotor.isSensorPresent(CANTalon.FeedbackDevice.AnalogPot):
self.aimMotor.setSafetyEnabled(False)
self.aimMotor.setFeedbackDevice(CANTalon.FeedbackDevice.AnalogPot)
self.aimMotor.enableLimitSwitch(True, True)
self.aimMotor.enableBrakeMode(True)
self.aimMotor.setAllowableClosedLoopErr(5)
self.aimMotor.configPeakOutpuVoltage(12.0, -12.0)
self.aimMotor.setVoltageRampRate(150)
# TODO: setPID if needed
self.boulderSwitch = DigitalInput(robot.map.k_IlBoulderSwitchPort)
self.launcherServoLeft = Servo(robot.map.k_IlServoLeftPort)
self.launcherServoRight = Servo(robot.map.k_IlServoRightPort)
def initDefaultCommand(self):
self.setDefaultCommand(ILCmds.DriverControlCommand(self.robot))
def updateDashboard(self):
pass
def beginDriverControl(self):
self.setControlMode("vbus")
def driverControl(self, deltaX, deltaY):
if self.robot.visionState.wantsControl():
self.trackVision()
else:
self.setControlMode("vbus")
self.aimMotor.set(deltaY * self.k_aimMultiplier)
def endDriverControl(self):
self.aimMotor.disableControl()
# ----------------------------------------------------------------------
def trackVision(self):
if not self.visionState.TargetAcquired:
return # hopefully someone is guiding the drivetrain to help acquire
if not self.visionState.LauncherLockedOnTarget:
if math.fabs(self.visionState.TargetY - self.getAngle()) < self.k_aimDegreesSlop:
self.visionState.LauncherLockedOnTarget = True
else:
self.setPosition(self.degreesToTicks(self.TargetY))
elif self.visionState.DriveLockedOnTarget:
# here we shoot and then leave AutoAimMode
pass
else:
# do nothing... waiting form driveTrain to reach orientation
pass
def setControlMode(self, mode):
if mode != self.controlMode:
self.controlMode = mode
if mode == "vbus":
self.aimMotor.disableControl()
self.aimMotor.changeControlMode(CANTalon.ControlMode.PercentVbus)
self.aimMotor.enableControl()
elif mode == "position":
self.aimMotor.disableControl()
self.aimMotor.changeControlMode(CANTalon.ControlMode.Position)
self.aimMotor.enableControl()
elif mode == "disabled":
self.aimMotor.disableControl()
else:
self.robot.error("ignoring controlmode " + mode)
self.controlMode = None
self.aimMotor.disableControl()
# launcher aim -------------------------------------------------------------
def getPosition(self):
return self.aimMotor.getPosition()
def getAngle(self):
pos = self.getPosition()
return self.ticksToDegress(pos)
def setPosition(self, pos):
self.setControlMode("position")
self.aimMotor.set(pos)
def isLauncherAtTop(self):
return self.aimMotor.isFwdLimitSwitchClosed()
def isLauncherAtBottom(self):
return self.aimMotor.isRevLimitSwitchClosed()
def isLauncherAtIntake(self):
if self.k_intakeRatio == 0.0:
return self.isLauncherAtBottom()
else:
return self.isLauncherNear(self.getIntakePosition())
def isLauncherAtNeutral(self):
return self.isLauncherNear(self.getNeutralPosition())
def isLauncherAtTravel(self):
return self.isLauncherNear(self.getTravelPosition())
def isLauncherNear(self, pos):
return math.fabs(self.getPosition() - pos) < self.k_maxPotentiometerError
def getIntakePosition(self):
return self.getLauncherPositionFromRatio(self.k_launchIntakeRatio)
def getNeutralPosition(self):
return self.getLauncherPositionFromRatio(self.k_launchNeutralRatio)
def getTravelPosition(self):
return self.getLauncherPositionFromRatio(self.k_launchTravelRatio)
def getLauncherPositionFromRatio(self, ratio):
return self.launchMin + ratio * self.launchRange
def degressToTicks(self, deg):
ratio = (deg - self.k_launchMinDegrees) / self.k_launchRangeDegrees
return self.k_launchMin + ratio * self.k_launchRange
def ticksToDegrees(self, t):
ratio = (t - self.k_launchMin) / self.k_launchRange
return self.k_launchMinDegrees + ratio * self.k_launchRangeDegrees
def calibratePotentiometer(self):
if self.isLauncherAtBottom():
self.launchMin = self.getPosition()
elif self.isLauncherAtTop():
self.launchMax = self.getPosition()
self.launchRange = self.launchMax - self.launchMin
# intake wheels controls ---------------------------------------------------
def setWheelSpeedForLaunch(self):
if self.isLauncherAtTop():
speed = self.k_launchSpeedHigh
else:
speed = self.k_launchSpeedLow
self.setSpeed(speed)
def setWheelSpeedForIntake(self):
self.setSpeed(self.k_intakeSpeed)
def stopWheels(self):
self.setSpeed(k_launchSpeedZero)
def setWheelSpeed(self, speed):
self.intakeLeftMotor.set(speed)
self.intakeRightMotor.set(-speed)
# boulder and launcher servo controls --------------------------------------------------
def hasBoulder(self):
return self.boulderSwitch.get()
def activateLauncherServos(self):
self.robot.info("activateLauncherServos at:" + self.getAimPosition())
self.launcherServoLeft.set(self.k_servoLeftLaunchPosition)
self.launcherServoRight.set(self.k_servoRightLaunchPosition)
def retractLauncherServos(self):
self.launcherServoLeft.set(self.k_servoLeftNeutralPosition)
self.launcherServoRight.set(self.k_servoRightNeutralPosition)
class SwerveModule():
def __init__(self, drive, steer,
absolute=True, reverse_drive=False,
reverse_steer=False, zero_reading=0,
drive_encoder=False, reverse_drive_encoder=False):
# Initialise private motor controllers
self._drive = CANTalon(drive)
self.reverse_drive = reverse_drive
self._steer = CANTalon(steer)
self.drive_encoder = drive_encoder
self._distance_offset = 0 # Offset the drive distance counts
# Set up the motor controllers
# Different depending on whether we are using absolute encoders or not
if absolute:
self.counts_per_radian = 1024.0 / (2.0 * math.pi)
self._steer.setFeedbackDevice(CANTalon.FeedbackDevice.AnalogEncoder)
self._steer.changeControlMode(CANTalon.ControlMode.Position)
self._steer.reverseSensor(reverse_steer)
self._steer.reverseOutput(not reverse_steer)
# Read the current encoder position
self._steer.setPID(20.0, 0.0, 0.0) # PID values for abs
self._offset = zero_reading - 256.0
if reverse_steer:
self._offset = -self._offset
else:
self._steer.changeControlMode(CANTalon.ControlMode.Position)
self._steer.setFeedbackDevice(CANTalon.FeedbackDevice.QuadEncoder)
self._steer.setPID(6.0, 0.0, 0.0) # PID values for rel
self.counts_per_radian = (497.0 * (40.0 / 48.0) * 4.0 /
(2.0 * math.pi))
self._offset = self.counts_per_radian*2.0*math.pi/4.0
self._steer.setPosition(0.0)
if self.drive_encoder:
self.drive_counts_per_rev = 80*6.67
self.drive_counts_per_metre = (self.drive_counts_per_rev /
(math.pi * 0.1016))
self.drive_max_speed = 570
self._drive.setFeedbackDevice(CANTalon.FeedbackDevice.QuadEncoder)
self.changeDriveControlMode(CANTalon.ControlMode.Speed)
self._drive.reverseSensor(reverse_drive_encoder)
else:
self.drive_counts_per_rev = 0.0
self.drive_max_speed = 1.0
self.changeDriveControlMode(CANTalon.ControlMode.PercentVbus)
self._drive.setVoltageRampRate(150.0)
def changeDriveControlMode(self, control_mode):
if self._drive.getControlMode is not control_mode:
if control_mode == CANTalon.ControlMode.Speed:
self._drive.setPID(1.0, 0.00, 0.0, 1023.0 / self.drive_max_speed)
elif control_mode == CANTalon.ControlMode.Position:
self._drive.setPID(0.1, 0.0, 0.0, 0.0)
self._drive.changeControlMode(control_mode)
@property
def direction(self):
# Read the current direction from the controller setpoint
setpoint = self._steer.getSetpoint()
return float(setpoint - self._offset) / self.counts_per_radian
@property
def speed(self):
# Read the current speed from the controller setpoint
setpoint = self._drive.getSetpoint()
return float(setpoint)
@property
def distance(self):
# Read the current position from the encoder and remove the offset
return self._drive.getEncPosition() - self._distance_offset
def zero_distance(self):
self._distance_offset = self._drive.getEncPosition()
def steer(self, direction, speed=None):
if self.drive_encoder:
self.changeDriveControlMode(CANTalon.ControlMode.Speed)
else:
self.changeDriveControlMode(CANTalon.ControlMode.PercentVbus)
# Set the speed and direction of the swerve module
# Always choose the direction that minimises movement,
# even if this means reversing the drive motor
if speed is None:
# Force the modules to the direction specified - don't
# go to the closest one and reverse.
delta = constrain_angle(direction - self.direction) # rescale to +/-pi
self._steer.set((self.direction + delta) *
self.counts_per_radian + self._offset)
self._drive.set(0.0)
return
if abs(speed) > 0.05:
direction = constrain_angle(direction) # rescale to +/-pi
current_heading = constrain_angle(self.direction)
delta = min_angular_displacement(current_heading, direction)
if self.reverse_drive:
speed = -speed
if abs(constrain_angle(self.direction - direction)) < math.pi / 6.0:
self._drive.set(speed*self.drive_max_speed)
else:
self._drive.set(-speed*self.drive_max_speed)
self._steer.set((self.direction + delta) *
self.counts_per_radian + self._offset)
else:
self._drive.set(0.0)
class driveTrain(Component) :
def __init__(self, robot):
super().__init__()
self.robot = robot
# Constants
WHEEL_DIAMETER = 8
PI = 3.1415
ENCODER_TICK_COUNT_250 = 250
ENCODER_TICK_COUNT_360 = 360
ENCODER_GOAL = 0 # default
ENCODER_TOLERANCE = 1 # inch0
self.RPM = 4320/10.7
self.INCHES_PER_REV = WHEEL_DIAMETER * 3.1415
self.CONTROL_TYPE = False # False = disable PID components
self.LEFTFRONTCUMULATIVE = 0
self.LEFTBACKCUMULATIVE = 0
self.RIGHTFRONTCUMULATIVE = 0
self.RIGHTBACKCUMULATIVE = 0
self.rfmotor = CANTalon(0)
self.rbmotor = CANTalon(1)
self.lfmotor = CANTalon(2)
self.lbmotor = CANTalon(3)
self.lfmotor.reverseOutput(True)
self.lbmotor.reverseOutput(True)
#self.rfmotor.reverseOutput(True)
#self.rbmotor.reverseOutput(True)#practice bot only
self.rfmotor.enableBrakeMode(True)
self.rbmotor.enableBrakeMode(True)
self.lfmotor.enableBrakeMode(True)
self.lbmotor.enableBrakeMode(True)
absolutePosition = self.lbmotor.getPulseWidthPosition() & 0xFFF; # mask out the bottom12 bits, we don't care about the wrap arounds use the low level API to set the quad encoder signal
self.lbmotor.setEncPosition(absolutePosition)
absolutePosition = self.lfmotor.getPulseWidthPosition() & 0xFFF; # mask out the bottom12 bits, we don't care about the wrap arounds use the low level API to set the quad encoder signal
self.lfmotor.setEncPosition(absolutePosition)
absolutePosition = self.rbmotor.getPulseWidthPosition() & 0xFFF; # mask out the bottom12 bits, we don't care about the wrap arounds use the low level API to set the quad encoder signal
self.rbmotor.setEncPosition(absolutePosition)
absolutePosition = self.rfmotor.getPulseWidthPosition() & 0xFFF; # mask out the bottom12 bits, we don't care about the wrap arounds use the low level API to set the quad encoder signal
self.rfmotor.setEncPosition(absolutePosition)
self.rfmotor.setFeedbackDevice(CANTalon.FeedbackDevice.CtreMagEncoder_Relative)
self.rbmotor.setFeedbackDevice(CANTalon.FeedbackDevice.CtreMagEncoder_Relative)
self.lfmotor.setFeedbackDevice(CANTalon.FeedbackDevice.CtreMagEncoder_Relative)
self.lbmotor.setFeedbackDevice(CANTalon.FeedbackDevice.CtreMagEncoder_Relative)
#setting up the distances per rotation
self.lfmotor.configEncoderCodesPerRev(4096)
self.rfmotor.configEncoderCodesPerRev(4096)
self.lbmotor.configEncoderCodesPerRev(4096)
self.rbmotor.configEncoderCodesPerRev(4096)
self.lfmotor.setPID(0.0005, 0, 0.0, profile=0)
self.rfmotor.setPID(0.0005, 0, 0.0, profile=0)
self.lbmotor.setPID(0.0005, 0, 0.0, profile=0)
self.rbmotor.setPID(0.0005, 0, 0.0, profile=0)
self.lbmotor.configNominalOutputVoltage(+0.0, -0.0)
self.lbmotor.configPeakOutputVoltage(+12.0, -12.0)
self.lbmotor.setControlMode(CANTalon.ControlMode.Speed)
self.lfmotor.configNominalOutputVoltage(+0.0, -0.0)
self.lfmotor.configPeakOutputVoltage(+12.0, -12.0)
self.lfmotor.setControlMode(CANTalon.ControlMode.Speed)
self.rbmotor.configNominalOutputVoltage(+0.0, -0.0)
self.rbmotor.configPeakOutputVoltage(+12.0, -12.0)
self.rbmotor.setControlMode(CANTalon.ControlMode.Speed)
self.rfmotor.configNominalOutputVoltage(+0.0, -0.0)
self.rfmotor.configPeakOutputVoltage(+12.0, -12.0)
self.rfmotor.setControlMode(CANTalon.ControlMode.Speed)
self.rfmotor.setPosition(0)
self.rbmotor.setPosition(0)
self.lfmotor.setPosition(0)
self.lbmotor.setPosition(0)
self.lfmotor.reverseSensor(True)
self.lbmotor.reverseSensor(True)
'''
# changing the encoder output from DISTANCE to RATE (we're dumb)
self.lfencoder.setPIDSourceType(wpilib.PIDController.PIDSourceType.kRate)
self.lbencoder.setPIDSourceType(wpilib.PIDController.PIDSourceType.kRate)
self.rfencoder.setPIDSourceType(wpilib.PIDController.PIDSourceType.kRate)
self.rbencoder.setPIDSourceType(wpilib.PIDController.PIDSourceType.kRate)
# LiveWindow settings (Encoder)
wpilib.LiveWindow.addSensor("Drive Train", "Left Front Encoder", self.lfencoder)
wpilib.LiveWindow.addSensor("Drive Train", "Right Front Encoder", self.rfencoder)
wpilib.LiveWindow.addSensor("Drive Train", "Left Back Encoder", self.lbencoder)
wpilib.LiveWindow.addSensor("Drive Train", "Right Back Encoder", self.rbencoder)
'''
'''
# Checking the state of the encoders on the Smart Dashboard
wpilib.SmartDashboard.putBoolean("Right Front Encoder Enabled?", self.rfmotor.isSensorPresent)
wpilib.SmartDashboard.putBoolean("Right Back Encoder Enabled?", self.rbmotor.isSensorPresent)
wpilib.SmartDashboard.putBoolean("Left Front Encoder Enabled?", self.lfmotor.isSensorPresent)
wpilib.SmartDashboard.putBoolean("Left Back Encoder Enabled?", self.lbmotor.isSensorPresent)
'''
if self.CONTROL_TYPE:
# Initializing PID Controls
self.pidRightFront = wpilib.PIDController(0.002, 0.8, 0.005, 0, self.rfmotor.feedbackDevice, self.rfmotor, 0.02)
self.pidLeftFront = wpilib.PIDController(0.002, 0.8, 0.005, 0, self.lfmotor.feedbackDevice, self.lfmotor, 0.02)
self.pidRightBack = wpilib.PIDController(0.002, 0.8, 0.005, 0, self.rbmotor.feedbackDevice, self.rbmotor, 0.02)
self.pidLeftBack = wpilib.PIDController(0.002, 0.8, 0.005, 0, self.lbmotor.feedbackDevice, self.lbmotor, 0.02)
# PID Absolute Tolerance Settings
self.pidRightFront.setAbsoluteTolerance(0.05)
self.pidLeftFront.setAbsoluteTolerance(0.05)
self.pidRightBack.setAbsoluteTolerance(0.05)
self.pidLeftBack.setAbsoluteTolerance(0.05)
# PID Output Range Settings
self.pidRightFront.setOutputRange(-1, 1)
self.pidLeftFront.setOutputRange(-1, 1)
self.pidRightBack.setOutputRange(-1, 1)
self.pidLeftBack.setOutputRange(-1, 1)
# Enable PID
#self.enablePIDs()
'''
# LiveWindow settings (PID)
wpilib.LiveWindow.addActuator("Drive Train Right", "Right Front PID", self.pidRightFront)
wpilib.LiveWindow.addActuator("Drive Train Left", "Left Front PID", self.pidLeftFront)
wpilib.LiveWindow.addActuator("Drive Train Right", "Right Back PID", self.pidRightBack)
wpilib.LiveWindow.addActuator("Drive Train Left", "Left Back PID", self.pidLeftBack)
'''
self.dashTimer = Timer() # Timer for SmartDashboard updating
self.dashTimer.start()
'''
# Adding components to the LiveWindow (testing)
wpilib.LiveWindow.addActuator("Drive Train Left", "Left Front Motor", self.lfmotor)
wpilib.LiveWindow.addActuator("Drive Train Right", "Right Front Motor", self.rfmotor)
wpilib.LiveWindow.addActuator("Drive Train Left", "Left Back Motor", self.lbmotor)
wpilib.LiveWindow.addActuator("Drive Train Right", "Right Back Motor", self.rbmotor)
'''
def log(self):
#The log method puts interesting information to the SmartDashboard. (like velocity information)
'''
#no longer implemented because of change of hardware
wpilib.SmartDashboard.putNumber("Left Front Speed", self.lfmotor.getEncVelocity())
wpilib.SmartDashboard.putNumber("Right Front Speed", self.rfmotor.getEncVelocity())
wpilib.SmartDashboard.putNumber("Left Back Speed", self.lbmotor.getEncVelocity())
wpilib.SmartDashboard.putNumber("Right Back Speed", self.rbmotor.getEncVelocity())
'''
wpilib.SmartDashboard.putNumber("RF Mag Enc Position", self.rfmotor.getPosition())
wpilib.SmartDashboard.putNumber("RB Mag Enc Position", self.rbmotor.getPosition())
wpilib.SmartDashboard.putNumber("LF Mag Enc Position", self.lfmotor.getPosition())
wpilib.SmartDashboard.putNumber("LB Mag Enc Position", self.lbmotor.getPosition())
'''
wpilib.SmartDashboard.putNumber("Right Front Mag Distance(inches)", self.convertEncoderRaw(self.rfmotor.getPosition()*0.57))
wpilib.SmartDashboard.putNumber("Right Back Mag Distance(inches)", self.convertEncoderRaw(self.rbmotor.getPosition()*0.57))
wpilib.SmartDashboard.putNumber("Left Front Mag Distance(inches)", self.convertEncoderRaw(self.lfmotor.getPosition()*0.57))
wpilib.SmartDashboard.putNumber("Left Back Mag Distance(inches)", self.convertEncoderRaw(self.lbmotor.getPosition()*0.57))
'''
# drive forward function
def drive_forward(self, speed) :
self.drive.tankDrive(speed, speed, True)
# manual drive function for Tank Drive
def xboxTankDrive(self, leftSpeed, rightSpeed, leftB, rightB, leftT, rightT):
#self.lfmotor.setCloseLoopRampRate(1)
#self.lbmotor.setCloseLoopRampRate(1)
#self.rfmotor.setCloseLoopRampRate(1)
#self.rbmotor.setCloseLoopRampRate(1)
if (leftB == True): #Straight Button
rightSpeed = leftSpeed
if (rightB == True): #Slow Button
#leftSpeed = leftSpeed/1.75
#rightSpeed = rightSpeed/1.75
if(not(leftSpeed < -0.5 and rightSpeed > 0.5 or leftSpeed > -0.5 and rightSpeed < 0.5)): #only do t if not turning
leftSpeed = leftSpeed/1.75
rightSpeed = rightSpeed/1.75
# Fast button
if(rightT == True):
#self.lfmotor.setCloseLoopRampRate(24)
#self.lbmotor.setCloseLoopRampRate(24)
#self.rfmotor.setCloseLoopRampRate(24)
#self.rbmotor.setCloseLoopRampRate(24)
leftSpeed = leftSpeed*(1.75)
rightSpeed = rightSpeed*(1.75)
if(leftT == True):
leftSpeed = 0.1
rightSpeed = 0.1
# Creating margin for error when using the joysticks, as they're quite sensitive
if abs(rightSpeed) < 0.04 :
rightSpeed = 0
if abs(leftSpeed) < 0.04 :
leftSpeed = 0
if self.CONTROL_TYPE:
self.pidRightFront.setSetpoint(rightSpeed)
self.pidRightBack.setSetpoint(rightSpeed)
self.pidLeftFront.setSetpoint(leftSpeed)
self.pidLeftBack.setSetpoint(leftSpeed)
else:
self.lfmotor.set(leftSpeed*512)
self.rfmotor.set(rightSpeed*512)
self.lbmotor.set(leftSpeed*512)
self.rbmotor.set(rightSpeed*512)
#autononmous tank drive (to remove a need for a slow, striaght, or fast button)
def autonTankDrive(self, leftSpeed, rightSpeed):
self.log()
#self.drive.tankDrive(leftSpeed, rightSpeed, True)
self.rfmotor.set(rightSpeed)
self.rbmotor.set(rightSpeed*(-1))
self.lfmotor.set(leftSpeed)
self.lbmotor.set(leftSpeed*(-1))
# stop function
def drive_stop(self) :
self.drive.tankDrive(0,0)
# fucntion to reset the PID's and encoder values
def reset(self):
self.rfmotor.setPosition(0)
self.rbmotor.setPosition(0)
self.lfmotor.setPosition(0)
self.lbmotor.setPosition(0)
if self.CONTROL_TYPE:
self.LEFTFRONTCUMULATIVE = 0
self.RIGHTFRONTCUMULATIVE = 0
self.LEFTBACKCUMULATIVE= 0
self.RIGHTBACKCUMULATIVE = 0
self.pidLeftBack.setSetpoint(0)
self.pidLeftFront.setSetpoint(0)
self.pidRightBack.setSetpoint(0)
self.pidRightFront.setSetpoint(0)
# def getDistance(self)
# return (abs(self.convertEncoderRaw(LEFTFRONTCUMULATIVE) + abs(self.convertEncoderRaw(LEFTBACKCUMULATIVE)) + abs(self.convertEncoderRaw(RIGHTFRONTCUMULATIVE)) + abs(self.convertEncoderRaw(RIGHTBACKCUMULATIVE)))
def turn_angle(self, degrees):
desired_inches = self.INCHES_PER_DEGREE * degrees
if degrees < 0:
while (abs(self.lfencoder.getDistance()) + abs(self.rfencoder.getDistance())) <= desired_inches :
self.autonTankDrive(0.4, -0.4)
elif degrees > 0:
while (abs(self.lfencoder.getDistance()) + abs(self.rfencoder.getDistance())) <= desired_inches :
self.autonTankDrive(-0.4, 0.4)
# Enable PID Controllers
def enablePIDs(self):
'''
#No longer required because we swapped from analog encoders to magnetic encoders
self.pidLeftFront.enable()
self.pidLeftBack.enable()
self.pidRightFront.enable()
self.pidRightBack.enable()
'''
# Disable PID Controllers
def disablePIDs(self):
'''
#see explaination above
self.pidLeftFront.disable()
self.pidLeftBack.disable()
self.pidRightFront.disable()
self.pidRightBack.disable()
'''
def getAutonDistance(self):
return (self.convertEncoderRaw(abs(self.rfmotor.getPosition()*0.57))
+ self.convertEncoderRaw(abs(self.rbmotor.getPosition()*0.57))
+ self.convertEncoderRaw(abs(self.lfmotor.getPosition()*0.57))
+ self.convertEncoderRaw(abs(self.lbmotor.getPosition()*0.57)))/4
#detirmines how many ticks the encoder has processed
def getMotorDistance(self, motor, cumulativeDistance):
currentRollovers = 0 #number of times the encoder has gone from 1023 to 0
previousValue = cumulativeDistance #variable for comparison
currentValue = motor.getEncPosition() #variable for comparison
if(previousValue > currentValue): #checks to see if the encoder reset itself from 1023 to 0
currentRollovers += 1 #notes the rollover
return currentValue + (currentRollovers * 1024) #adds current value to the number of rollovers, each rollover == 1024 ticks
#converts ticks from getMotorDistance into inches
def convertEncoderRaw(self, selectedEncoderValue):
return selectedEncoderValue * self.INCHES_PER_REV
