wpi::AnalogPotentiometer Class Reference

Class for reading analog potentiometers. More...

#include <wpi/hardware/rotation/AnalogPotentiometer.hpp>

Inheritance diagram for wpi::AnalogPotentiometer:

Public Member Functions
	AnalogPotentiometer (int channel, double fullRange=1.0, double offset=0.0)
	Construct an Analog Potentiometer object from a channel number.
	AnalogPotentiometer (AnalogInput *input, double fullRange=1.0, double offset=0.0)
	Construct an Analog Potentiometer object from an existing Analog Input pointer.
	AnalogPotentiometer (std::shared_ptr< AnalogInput > input, double fullRange=1.0, double offset=0.0)
	Construct an Analog Potentiometer object from an existing Analog Input pointer.
	~AnalogPotentiometer () override=default
	AnalogPotentiometer (AnalogPotentiometer &&)=default
AnalogPotentiometer &	operator= (AnalogPotentiometer &&)=default
double	Get () const
	Get the current reading of the potentiometer.
void	InitSendable (wpi::util::SendableBuilder &builder) override
	Initializes this Sendable object.
Public Member Functions inherited from wpi::util::Sendable
virtual constexpr	~Sendable ()=default
Public Member Functions inherited from wpi::util::SendableHelper< AnalogPotentiometer >
constexpr	SendableHelper (const SendableHelper &rhs)=default
constexpr SendableHelper &	operator= (const SendableHelper &rhs)=default

Additional Inherited Members
Protected Member Functions inherited from wpi::util::SendableHelper< AnalogPotentiometer >
constexpr	~SendableHelper ()

Detailed Description

Class for reading analog potentiometers.

Analog potentiometers read in an analog voltage that corresponds to a position. The position is in whichever units you choose, by way of the scaling and offset constants passed to the constructor.

Constructor & Destructor Documentation

AnalogPotentiometer() [1/4]

wpi::AnalogPotentiometer::AnalogPotentiometer ( int channel, double fullRange = 1.0, double offset = 0.0 )

explicit

Construct an Analog Potentiometer object from a channel number.

Use the fullRange and offset values so that the output produces meaningful values. I.E: you have a 270 degree potentiometer and you want the output to be degrees with the halfway point as 0 degrees. The fullRange value is 270.0 degrees and the offset is -135.0 since the halfway point after scaling is 135 degrees.

This will calculate the result from the fullRange times the fraction of the supply voltage, plus the offset.

Parameters

channel	The Analog Input channel number on the roboRIO the potentiometer is plugged into. 0-3 are on-board and 4-7 are on the MXP port.
fullRange	The value (in desired units) representing the full 0-3.3V range of the input.
offset	The value (in desired units) representing the angular output at 0V.

AnalogPotentiometer() [2/4]

wpi::AnalogPotentiometer::AnalogPotentiometer ( AnalogInput * input, double fullRange = 1.0, double offset = 0.0 )

explicit

Construct an Analog Potentiometer object from an existing Analog Input pointer.

Use the fullRange and offset values so that the output produces meaningful values. I.E: you have a 270 degree potentiometer and you want the output to be degrees with the halfway point as 0 degrees. The fullRange value is 270.0 degrees and the offset is -135.0 since the halfway point after scaling is 135 degrees.

This will calculate the result from the fullRange times the fraction of the supply voltage, plus the offset.

Parameters

input	The existing Analog Input pointer
fullRange	The value (in desired units) representing the full 0-3.3V range of the input.
offset	The value (in desired units) representing the angular output at 0V.

AnalogPotentiometer() [3/4]

wpi::AnalogPotentiometer::AnalogPotentiometer ( std::shared_ptr< AnalogInput > input, double fullRange = 1.0, double offset = 0.0 )

explicit

Construct an Analog Potentiometer object from an existing Analog Input pointer.

Use the fullRange and offset values so that the output produces meaningful values. I.E: you have a 270 degree potentiometer and you want the output to be degrees with the halfway point as 0 degrees. The fullRange value is 270.0 degrees and the offset is -135.0 since the halfway point after scaling is 135 degrees.

This will calculate the result from the fullRange times the fraction of the supply voltage, plus the offset.

Parameters

input	The existing Analog Input pointer
fullRange	The value (in desired units) representing the full 0-3.3V range of the input.
offset	The value (in desired units) representing the angular output at 0V.

~AnalogPotentiometer()

wpi::AnalogPotentiometer::~AnalogPotentiometer ( )

overridedefault

AnalogPotentiometer() [4/4]

wpi::AnalogPotentiometer::AnalogPotentiometer ( AnalogPotentiometer && )

default

Member Function Documentation

Get()

double wpi::AnalogPotentiometer::Get

(

)

const

Get the current reading of the potentiometer.

Returns

The current position of the potentiometer (in the units used for fullRange and offset).

InitSendable()

void wpi::AnalogPotentiometer::InitSendable ( wpi::util::SendableBuilder & builder )

overridevirtual

Initializes this Sendable object.

Parameters

builder

sendable builder

Implements wpi::util::Sendable.

operator=()

AnalogPotentiometer & wpi::AnalogPotentiometer::operator= ( AnalogPotentiometer && )

default

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The documentation for this class was generated from the following file:

• wpi/hardware/rotation/AnalogPotentiometer.hpp