c7222::GpioIn Class Reference

GPIO input-only wrapper with pull configuration and optional IRQ. More...

#include <gpio.hpp>

Inheritance diagram for c7222::GpioIn:

Collaboration diagram for c7222::GpioIn:

Classes
struct	Config
	Configuration structure for input GPIO setup. More...

Public Member Functions
	GpioIn (uint32_t pin)
	Create a GPIO input with default configuration.
	GpioIn (uint32_t pin, const Config &config)
	Create a GPIO input with the given configuration.
virtual	~GpioIn ()
	Destructor.
void	EnableIrq (GpioInputEvent events, std::function< void(uint32_t)> handler)
	Enable GPIO IRQs for the given event set and handler.
void	DisableIrq ()
	Disable any IRQs configured for this input.
void	Configure (const Config &config)
	Apply a new configuration.
bool	Read () const
	Read the current GPIO level.
uint32_t	GetPin () const
	Return the GPIO number.
Config	GetConfig () const
	Return the cached configuration.
bool	HasHandler () const
	Return true if an IRQ handler is currently registered.
void	CallIrqHandler (uint32_t events) const
	Invoke the registered IRQ handler (if any).
Public Member Functions inherited from c7222::NonCopyable
	NonCopyable (const NonCopyable &)=delete
NonCopyable &	operator= (const NonCopyable &)=delete
	NonCopyable (NonCopyable &&)=default
NonCopyable &	operator= (NonCopyable &&)=default
Public Member Functions inherited from c7222::NonMovable
	NonMovable (const NonMovable &)=default
NonMovable &	operator= (const NonMovable &)=default
	NonMovable (NonMovable &&)=delete
NonMovable &	operator= (NonMovable &&)=delete

Protected Member Functions
void	ApplyConfig ()
	Apply internal configuration to the hardware.
Protected Member Functions inherited from c7222::NonCopyableNonMovable
	NonCopyableNonMovable ()=default
	~NonCopyableNonMovable ()=default
Protected Member Functions inherited from c7222::NonCopyable
	NonCopyable ()=default
	~NonCopyable ()=default
Protected Member Functions inherited from c7222::NonMovable
	NonMovable ()=default
	~NonMovable ()=default

Protected Attributes
uint32_t	pin_
	GPIO pin number managed by this instance.
Config	config_
	Cached configuration used to (re)apply platform settings.

Detailed Description

GPIO input-only wrapper with pull configuration and optional IRQ.

This class owns an input pin configuration and exposes Read() plus IRQ enable/disable helpers. Only pull mode and input events are configurable.

IRQ behavior:

• EnableIrq(events, handler) registers a callback and enables GPIO IRQs on the platform backend.
• The events argument is a bitmask of GpioInputEvent values. Multiple events can be OR-ed together to enable several triggers at once.
• The backend passes the raw event bitmask to handler whenever an IRQ fires, so the handler can inspect which edge/level caused the interrupt.

Event masking:

• GpioInputEvent values are bit flags (LevelLow, LevelHigh, FallingEdge, RisingEdge). The platform maps these directly to the underlying Pico SDK IRQ masks.
• Example: EnableIrq(GpioInputEvent::FallingEdge | GpioInputEvent::RisingEdge, cb) enables both edges on the same pin.

Constructor & Destructor Documentation

GpioIn() [1/2]

c7222::GpioIn::GpioIn ( uint32_t  pin )

inlineexplicit

Create a GPIO input with default configuration.

GpioIn() [2/2]

c7222::GpioIn::GpioIn ( uint32_t  pin, const Config &  config  )

explicit

Create a GPIO input with the given configuration.

Parameters

pin	GPIO number.
config	Initial configuration.

~GpioIn()

virtual c7222::GpioIn::~GpioIn ( )

virtual

Destructor.

Platform backends may use this to unregister the pin from internal maps.

Member Function Documentation

ApplyConfig()

void c7222::GpioIn::ApplyConfig ( )

protected

Apply internal configuration to the hardware.

Implemented by the platform backend.

CallIrqHandler()

void c7222::GpioIn::CallIrqHandler

(

uint32_t

events

)

const

Invoke the registered IRQ handler (if any).

Used by platform IRQ dispatchers.

Configure()

void c7222::GpioIn::Configure

(

const Config &

config

)

Apply a new configuration.

Parameters

config

New configuration.

DisableIrq()

void c7222::GpioIn::DisableIrq

(

)

Disable any IRQs configured for this input.

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EnableIrq()

void c7222::GpioIn::EnableIrq	(	GpioInputEvent	events,
		std::function< void(uint32_t)>	handler
	)

Enable GPIO IRQs for the given event set and handler.

Parameters

events	Bitmask of input events to enable.
handler	Callback invoked from IRQ context.

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GetConfig()

Config c7222::GpioIn::GetConfig ( ) const

inline

Return the cached configuration.

GetPin()

uint32_t c7222::GpioIn::GetPin ( ) const

inline

Return the GPIO number.

HasHandler()

bool c7222::GpioIn::HasHandler ( ) const

inline

Return true if an IRQ handler is currently registered.

Read()

bool c7222::GpioIn::Read

(

)

const

Read the current GPIO level.

Returns

Current logic level.

Member Data Documentation

config_

Config c7222::GpioIn::config_

protected

Cached configuration used to (re)apply platform settings.

pin_

uint32_t c7222::GpioIn::pin_

protected

GPIO pin number managed by this instance.

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

• libs/elec_c7222/devices/include/gpio.hpp