SpaIot::BusSettings

SPI 2840X Bus settings. More...

Public Member Functions
	BusSettings ()
virtual	~BusSettings ()
	Destructor.
	BusSettings (const int dataPin, const int clkPin, const int holdPin)
	BusSettings (const std::initializer_list< int > &pins)
	BusSettings (const BusSettings &other)
	Copy Constructor.
	BusSettings (BusSettings &&other)
	Move Constructor after the move, other is null, other.clear() must be called if it is to be used again.
BusSettings &	operator= (const BusSettings &other)
	Sets the BusSettings object to be equal to other.
BusSettings &	operator= (BusSettings &&other)
	Move assignment after the move, other is null, other.clear() must be called if it is to be used again.
void	clear ()
	Clears the BusSettings object After the call to this function, the BusSettings object is the same as one that has been default constructed.
bool	isNull () const
	Returns true if the object is null (i.e. it has not been initialized, d_ptr is null)
bool	isEmpty () const
	Checks if all attributes are set to their default values (same as the default constructor)
bool	operator== (const BusSettings &other) const
bool	operator!= (const BusSettings &other) const
int	dataPin () const
int	clkPin () const
int	holdPin () const
void	setDataPin (int pin)
void	setClkPin (int pin)
void	setHoldPin (int pin)

Detailed Description

SPI 2840X Bus settings.

This class represents the settings of a SPI 2840X Bus. It is a concrete class, and can be instantiated. This class is copyable and movable.

Constructor & Destructor Documentation

BusSettings() [1/3]

SpaIot::BusSettings::BusSettings

(

)

The default constructor creates a BusSettings object and initializes the pin vector to {-1, -1, -1}

BusSettings() [2/3]

SpaIot::BusSettings::BusSettings	(	const int	dataPin,
		const int	clkPin,
		const int	holdPin
	)

The constructor for the BusSettings class takes three parameters, and stores them in the private member variables

Parameters

dataPin	The pin number of the data pin of the MCP23017 chip.
clkPin	The pin number of the clock pin.
holdPin	The pin that is used to hold the data line high.

BusSettings() [3/3]

SpaIot::BusSettings::BusSettings

(

const std::initializer_list< int > &

pins

)

The constructor takes a list of pins

The list of pins must be exactly 3 pins, and the pins must be in the order { dataPin, clkPin, holdPin } If the list is not exactly 3 pins, the comportment is undefined.

Parameters

pins	A list of 3 pins to use for the bus.

Member Function Documentation

clkPin()

int SpaIot::BusSettings::clkPin

(

)

const

This function returns the clock pin number

Returns

The pin number of the GPIO pin that the bus is connected to.

dataPin()

int SpaIot::BusSettings::dataPin

(

)

const

This function returns the data pin number

Returns

The pin number of the GPIO pin that the bus is connected to.

holdPin()

int SpaIot::BusSettings::holdPin

(

)

const

This function returns the pin number of the hold pin

Returns

The pin number of the GPIO pin that the bus is connected to.

operator!=()

bool SpaIot::BusSettings::operator!=

(

const BusSettings &

other

)

const

The function returns true if the two objects are not equal

Parameters

other

the other BusSettings object to compare to

Returns

The return value is a boolean value. It is true if the two objects are not equal, and false if they are equal.

operator==()

bool SpaIot::BusSettings::operator==

(

const BusSettings &

other

)

const

The function returns true if the two objects are equal

Parameters

other

the other BusSettings object to compare to

Returns

The return value is a boolean value. It is true if the two objects are equal, and false if they are not equal.

setClkPin()

void SpaIot::BusSettings::setClkPin

(

int

pin

)

Set the clock pin to the given value.

Parameters

pin	The pin number of the GPIO pin that the bus is connected to.

setDataPin()

void SpaIot::BusSettings::setDataPin

(

int

pin

)

Set the data pin to the given value.

Parameters

pin	The pin number of the GPIO pin that the bus is connected to.

setHoldPin()

void SpaIot::BusSettings::setHoldPin

(

int

pin

)

Set the pin number for the hold pin.

Parameters

pin	The pin number of the GPIO pin that the bus is connected to.