com.pi4j.component.servo.impl

Class PCA9685GpioServoDriver

java.lang.Object

com.pi4j.component.servo.impl.PCA9685GpioServoDriver

All Implemented Interfaces:

ServoDriver

public class PCA9685GpioServoDriver
extends Object
implements ServoDriver

Author:

Christian Wehrli

Constructor Summary

Constructors

Constructor and Description
PCA9685GpioServoDriver(PCA9685GpioProvider provider, Pin pin)

Method Summary

Modifier and Type	Method and Description
Pin	getPin()
PCA9685GpioProvider	getProvider()
int	getServoPulseResolution() This is read only value driver is to provide to users of this class.
int	getServoPulseWidth() This method returns current servo pulse width.
protected void	setPin(Pin pin)
protected void	setProvider(PCA9685GpioProvider provider)
void	setServoPulseWidth(int position) Sets servo pulse width in resolution provided by ServoDriver.getServoPulseResolution().
protected void	updateResolution()

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

PCA9685GpioServoDriver

public PCA9685GpioServoDriver(PCA9685GpioProvider provider,
                              Pin pin)

Method Detail

setProvider

protected void setProvider(PCA9685GpioProvider provider)

getProvider

public PCA9685GpioProvider getProvider()

setPin

protected void setPin(Pin pin)

getPin

public Pin getPin()

Specified by:

getPin in interface ServoDriver

getServoPulseWidth

public int getServoPulseWidth()

Description copied from interface: ServoDriver

This method returns current servo pulse width. Zero may represent this driver stopped producing pulses. Also, value of -1 may define undefined situation when this abstraction didn't get initial value yet and there is no way telling what real, hardware or software driver is sending.

Specified by:

getServoPulseWidth in interface ServoDriver

Returns:

current servo pulse this driver is producing

setServoPulseWidth

public void setServoPulseWidth(int position)

Description copied from interface: ServoDriver

Sets servo pulse width in resolution provided by ServoDriver.getServoPulseResolution(). Zero value may mean that this driver is currently not producing pulse. Negative values may, generally, be invalid.

Specified by:

setServoPulseWidth in interface ServoDriver

Parameters:

position - pulse width in resolution read from ServoDriver.getServoPulseResolution()

getServoPulseResolution

public int getServoPulseResolution()

Description copied from interface: ServoDriver

This is read only value driver is to provide to users of this class. It defines resolution ServoDriver.getServoPulseWidth() and ServoDriver.setServoPulseWidth(int) methods are operating in. Resolution is provided in 1/n (ms) where value returned from this method is n.

Specified by:

getServoPulseResolution in interface ServoDriver

Returns:

resolution of servo pulse widths used in this interface

updateResolution

protected void updateResolution()