MCP23017Gpio Class Reference

Inheritance diagram for MCP23017Gpio:

Public Member Functions
constexpr	MCP23017Gpio (MCP23017 *const parent, unsigned port, unsigned pin)
void	set () const override
	Sets the GPIO output pin to high.
void	clr () const override
	Clears the GPIO output pin to low.
void	write (Value new_state) const override
	Writes a GPIO output pin (set or clear to a specific state).
Value	read () const override
	Retrieves the current Value of a GPIO input pin.
void	set_direction (Direction dir) const override
	Sets the GPIO direction.
Direction	direction () const override
	Gets the GPIO 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 (MCP23017Gpio)

Private Attributes
MCP23017 *const	parent_
const uint8_t	port_
	0 or 1 for portA/B
const uint8_t	pinBit_
	one bit that denotes the output pin.

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

Definition at line 269 of file MCP23017Gpio.hxx.

Constructor & Destructor Documentation

MCP23017Gpio()

constexpr MCP23017Gpio::MCP23017Gpio ( MCP23017 *const  parent, unsigned  port, unsigned  pin  )

inlineconstexpr

Definition at line 272 of file MCP23017Gpio.hxx.

Member Function Documentation

clr()

void MCP23017Gpio::clr ( ) const

inlineoverridevirtual

Clears the GPIO output pin to low.

Implements Gpio.

Definition at line 284 of file MCP23017Gpio.hxx.

direction()

Direction MCP23017Gpio::direction ( ) const

inlineoverridevirtual

Gets the GPIO direction.

Returns

INPUT or OUTPUT

Implements Gpio.

Definition at line 333 of file MCP23017Gpio.hxx.

read()

Value MCP23017Gpio::read ( ) const

inlineoverridevirtual

Retrieves the current Value of a GPIO input pin.

Returns

SET if currently high, CLR if currently low.

Implements Gpio.

Definition at line 307 of file MCP23017Gpio.hxx.

set()

void MCP23017Gpio::set ( ) const

inlineoverridevirtual

Sets the GPIO output pin to high.

Implements Gpio.

Definition at line 279 of file MCP23017Gpio.hxx.

set_direction()

void MCP23017Gpio::set_direction ( Direction  dir ) const

inlineoverridevirtual

Sets the GPIO direction.

Parameters

dir	INPUT or OUTPUT

Implements Gpio.

Definition at line 321 of file MCP23017Gpio.hxx.

write()

void MCP23017Gpio::write ( Value  new_state ) const

inlineoverridevirtual

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

Parameters

new_state

the desired output state. See Value.

Implements Gpio.

Definition at line 289 of file MCP23017Gpio.hxx.

Member Data Documentation

parent_

MCP23017* const MCP23017Gpio::parent_

private

Definition at line 348 of file MCP23017Gpio.hxx.

pinBit_

const uint8_t MCP23017Gpio::pinBit_

private

one bit that denotes the output pin.

Definition at line 352 of file MCP23017Gpio.hxx.

port_

const uint8_t MCP23017Gpio::port_

private

0 or 1 for portA/B

Definition at line 350 of file MCP23017Gpio.hxx.

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

• MCP23017Gpio.hxx