SimRacing::AnalogInput Class Reference

Handle I/O for analog (ADC) inputs. More...

#include <SimRacing.h>

Classes
struct	Calibration
	Simple struct containing min/max values for axis calibration. More...

Public Member Functions
	AnalogInput (uint8_t p)
	Class constructor.
virtual bool	read ()
	Updates the current value of the axis by polling the ADC.
long	getPosition (long rMin=Min, long rMax=Max) const
	Retrieves the buffered position for the analog axis, rescaled to a nominal range using the calibration values.
int	getPositionRaw () const
	Retrieves the buffered position for the analog axis.
int	getMin () const
	Retrieves the calibrated minimum position.
int	getMax () const
	Retrieves the calibrated maximum position.
bool	isInverted () const
	Check whether the axis is inverted or not.
void	setPosition (int newPos)
	Override the current position with a custom value.
void	setInverted (bool invert=true)
	Set the 'inverted' state of the axis.
void	setCalibration (Calibration newCal)
	Calibrate the axis' min/max values for rescaling.

Static Public Attributes
static const int	Min = 0
	Minimum value of the analog to digital (ADC) converter.
static const int	Max = 1023
	Maximum value of the analog to digital (ADC) converter. 10-bit by default.

Detailed Description

Handle I/O for analog (ADC) inputs.

Definition at line 124 of file SimRacing.h.

Constructor & Destructor Documentation

AnalogInput()

SimRacing::AnalogInput::AnalogInput

(

uint8_t

p

)

Class constructor.

Parameters

p	the I/O pin for this input (Arduino numbering)

Definition at line 261 of file SimRacing.cpp.

Member Function Documentation

getMax()

int SimRacing::AnalogInput::getMax ( ) const

inline

Retrieves the calibrated maximum position.

Returns

the maximum position for the axis, per the calibration

Definition at line 176 of file SimRacing.h.

getMin()

int SimRacing::AnalogInput::getMin ( ) const

inline

Retrieves the calibrated minimum position.

Returns

the minimum position for the axis, per the calibration

Definition at line 169 of file SimRacing.h.

getPosition()

long SimRacing::AnalogInput::getPosition	(	long	rMin = Min,
		long	rMax = Max
	)		const

Retrieves the buffered position for the analog axis, rescaled to a nominal range using the calibration values.

By default this is rescaled to a 10-bit value, matching the range used by the AVR analog to digital converter (ADC).

Parameters

rMin	the minimum output value for the rescaling function
rMax	the maximum output value for the rescaling function

Returns

the axis position, buffered and rescaled

Definition at line 302 of file SimRacing.cpp.

getPositionRaw()

int SimRacing::AnalogInput::getPositionRaw

(

)

const

Retrieves the buffered position for the analog axis.

Returns

the axis position, buffered

Definition at line 307 of file SimRacing.cpp.

isInverted()

bool SimRacing::AnalogInput::isInverted

(

)

const

Check whether the axis is inverted or not.

Returns

'true' if the axis is inverted, 'false' otherwise

Definition at line 311 of file SimRacing.cpp.

read()

bool SimRacing::AnalogInput::read ( )

virtual

Updates the current value of the axis by polling the ADC.

Returns

'true' if the value changed, 'false' otherwise

Definition at line 269 of file SimRacing.cpp.

setCalibration()

void SimRacing::AnalogInput::setCalibration

(

AnalogInput::Calibration

newCal

)

Calibrate the axis' min/max values for rescaling.

Parameters

newCal

the calibration data struct to pass

Definition at line 327 of file SimRacing.cpp.

setInverted()

void SimRacing::AnalogInput::setInverted

(

bool

invert = true

)

Set the 'inverted' state of the axis.

This will return a flipped number when getPosition() is called (e.g. the axis at its maximum will return a minimum value).

Parameters

invert

whether the axis is inverted

Definition at line 319 of file SimRacing.cpp.

setPosition()

void SimRacing::AnalogInput::setPosition

(

int

newPos

)

Override the current position with a custom value.

This is useful for whenever a device has disconnected and we want to set a new 'default' value for position requests.

Parameters

newPos

the new position value to set

Definition at line 315 of file SimRacing.cpp.

Member Data Documentation

Max

const int SimRacing::AnalogInput::Max = 1023

static

Maximum value of the analog to digital (ADC) converter. 10-bit by default.

Definition at line 127 of file SimRacing.h.

Min

const int SimRacing::AnalogInput::Min = 0

static

Minimum value of the analog to digital (ADC) converter.

Definition at line 126 of file SimRacing.h.

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

• SimRacing.h
• SimRacing.cpp