SN74HC595GPO< N > Class Template Reference

General Purpose Output (GPO) instance on the 74HC595. More...

#include <SN74HC595GPO.hxx>

Inheritance diagram for SN74HC595GPO< N >:

Public Member Functions
constexpr	SN74HC595GPO (SN74HC595< N > *instance, uint8_t chip_index, uint8_t bit)
	Constructor.
void	write (Value new_state) const override
	Writes a GPO pin (set or clear to a specific state).
Value	read () const override
	Retrieves the current Value of a GPO output sate (requested).
void	set () const override
	Sets the GPO pin to high.
void	clr () const override
	Clears the GPO pin to low.
void	set_direction (Gpio::Direction dir) const override
	Sets the GPO direction (does nothing).
Direction	direction () const override
	Gets the GPO direction.
Public Member Functions inherited from Gpio
constexpr	Gpio ()
	Constructor.
void	write (bool new_state) const
	Writes a GPIO output pin (set or clear to a specific state).
bool	is_set () const
	Tests the GPIO input pin to see if it is set.
bool	is_clr () const
	Tests the GPIO input pin to see if it is clear.

Private Member Functions
	DISALLOW_COPY_AND_ASSIGN (SN74HC595GPO)

Private Attributes
SN74HC595< N > *const	instance_
	reference to chip instance
const uint8_t	chipIndex_
	index on the bus for the chip
const uint8_t	bit_
	bit number representative of the bit

Additional Inherited Members
Public Types inherited from Gpio
enum	Value : bool { CLR = false , SET = true , VLOW = CLR , VHIGH = SET }
	Defines the options for GPIO level. More...
enum class	Direction { DINPUT , DOUTPUT }
	Defines the options for GPIO direction. More...

Detailed Description

template<uint8_t N>
class SN74HC595GPO< N >

General Purpose Output (GPO) instance on the 74HC595.

Template Parameters

N	number of chips on the bus, starting at 1

Definition at line 164 of file SN74HC595GPO.hxx.

Constructor & Destructor Documentation

SN74HC595GPO()

template<uint8_t N>

constexpr SN74HC595GPO< N >::SN74HC595GPO ( SN74HC595< N > *  instance, uint8_t  chip_index, uint8_t  bit  )

inlineconstexpr

Constructor.

Parameters

instance	parrent 74HC595 instance that "owns" the interface.
chip_index	index on the bus for the chip, starting at 0.
bit	bit index (0 through 7) of the output.

Definition at line 171 of file SN74HC595GPO.hxx.

Member Function Documentation

clr()

template<uint8_t N>

void SN74HC595GPO< N >::clr ( ) const

inlineoverridevirtual

Clears the GPO pin to low.

Implements Gpio.

Definition at line 210 of file SN74HC595GPO.hxx.

direction()

template<uint8_t N>

Direction SN74HC595GPO< N >::direction ( ) const

inlineoverridevirtual

Gets the GPO direction.

Returns

always returns DOUTPUT

Implements Gpio.

Definition at line 228 of file SN74HC595GPO.hxx.

read()

template<uint8_t N>

Value SN74HC595GPO< N >::read ( ) const

inlineoverridevirtual

Retrieves the current Value of a GPO output sate (requested).

Returns

SET if currently high, CLR if currently low

Implements Gpio.

Definition at line 193 of file SN74HC595GPO.hxx.

set()

template<uint8_t N>

void SN74HC595GPO< N >::set ( ) const

inlineoverridevirtual

Sets the GPO pin to high.

Implements Gpio.

Definition at line 200 of file SN74HC595GPO.hxx.

set_direction()

template<uint8_t N>

void SN74HC595GPO< N >::set_direction ( Gpio::Direction  dir ) const

inlineoverridevirtual

Sets the GPO direction (does nothing).

Parameters

dir	DINPUT or DOUTPUT

Implements Gpio.

Definition at line 221 of file SN74HC595GPO.hxx.

write()

template<uint8_t N>

void SN74HC595GPO< N >::write ( Value  new_state ) const

inlineoverridevirtual

Writes a GPO pin (set or clear to a specific state).

Parameters

new_state

the desired output state. See Value.

Implements Gpio.

Definition at line 186 of file SN74HC595GPO.hxx.

Member Data Documentation

bit_

template<uint8_t N>

const uint8_t SN74HC595GPO< N >::bit_

private

bit number representative of the bit

Definition at line 241 of file SN74HC595GPO.hxx.

chipIndex_

template<uint8_t N>

const uint8_t SN74HC595GPO< N >::chipIndex_

private

index on the bus for the chip

Definition at line 238 of file SN74HC595GPO.hxx.

instance_

template<uint8_t N>

SN74HC595<N>* const SN74HC595GPO< N >::instance_

private

reference to chip instance

Definition at line 235 of file SN74HC595GPO.hxx.

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

• SN74HC595GPO.hxx