Package com.diozero.internal.board.odroid

Class OdroidC2SysFsPwmOutputDevice

java.lang.Object

com.diozero.internal.spi.AbstractDevice

com.diozero.internal.board.odroid.OdroidC2SysFsPwmOutputDevice

All Implemented Interfaces:

DeviceInterface, GpioDeviceInterface, InternalDeviceInterface, InternalPwmOutputDeviceInterface, AutoCloseable

public class OdroidC2SysFsPwmOutputDevice
extends AbstractDevice
implements InternalPwmOutputDeviceInterface

Setting up: 1 PWM Channel (GPIO 234; Pin 33):

 
sudo modprobe pwm-meson
sudo modprobe pwm-ctrl

 

2 PWM Channels (GPIO 234 & 235; Pins 33 / 19):

 
sudo modprobe pwm-meson npwm=2
sudo modprobe pwm-ctrl

 

Constructor Summary

Constructors

Constructor	Description
OdroidC2SysFsPwmOutputDevice(String key, DeviceFactoryInterface deviceFactory, PinInfo pinInfo, int frequencyHz, float initialValue)

Method Summary

Modifier and Type	Method	Description
protected void	closeDevice()
int	getGpio()
int	getPwmFrequency()	Get the PWM frequency in Hz
int	getPwmNum()	Get the device PWM output device number
float	getValue()	Get the percentage that the device is "on", range 0..1
void	setPwmFrequency(int frequencyHz)	Set the PWM output frequency
void	setValue(float value)	Set the percentage relative "on" time, range 0..1

Methods inherited from class com.diozero.internal.spi.AbstractDevice

close, getDeviceFactory, getKey, isChild, isOpen, setChild

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.diozero.api.DeviceInterface

close

Methods inherited from interface com.diozero.internal.spi.InternalDeviceInterface

getKey, isChild, isOpen, setChild

Methods inherited from interface com.diozero.internal.spi.InternalPwmOutputDeviceInterface

getMode

Constructor Detail

OdroidC2SysFsPwmOutputDevice

public OdroidC2SysFsPwmOutputDevice(String key,
                                    DeviceFactoryInterface deviceFactory,
                                    PinInfo pinInfo,
                                    int frequencyHz,
                                    float initialValue)

Method Detail

closeDevice

protected void closeDevice()

Specified by:

closeDevice in class AbstractDevice

getGpio

public int getGpio()

Specified by:

getGpio in interface GpioDeviceInterface

getPwmNum

public int getPwmNum()

Description copied from interface: InternalPwmOutputDeviceInterface

Get the device PWM output device number

Specified by:

getPwmNum in interface InternalPwmOutputDeviceInterface

Returns:

Device native PWM output

getValue

public float getValue()
               throws RuntimeIOException

Description copied from interface: InternalPwmOutputDeviceInterface

Get the percentage that the device is "on", range 0..1

Specified by:

getValue in interface InternalPwmOutputDeviceInterface

Returns:

the percentage "on" time, range 0..1

Throws:

RuntimeIOException - if an I/O error occurs

setValue

public void setValue(float value)
              throws RuntimeIOException

Description copied from interface: InternalPwmOutputDeviceInterface

Set the percentage relative "on" time, range 0..1

Specified by:

setValue in interface InternalPwmOutputDeviceInterface

Parameters:

value - new "on" time, range 0..1

Throws:

RuntimeIOException - if an I/O error occurs

getPwmFrequency

public int getPwmFrequency()

Description copied from interface: InternalPwmOutputDeviceInterface

Get the PWM frequency in Hz

Specified by:

getPwmFrequency in interface InternalPwmOutputDeviceInterface

Returns:

frequency in Hz

setPwmFrequency

public void setPwmFrequency(int frequencyHz)

Description copied from interface: InternalPwmOutputDeviceInterface

Set the PWM output frequency

Specified by:

setPwmFrequency in interface InternalPwmOutputDeviceInterface

Parameters:

frequencyHz - frequency in Hz