Abstract class, base to model Latched Debounced Delayed MPBs (LDD-MPB). More...

#include <ButtonToSwitch_STM32.h>

Inheritance diagram for LtchMPBttn:

[legend]

Collaboration diagram for LtchMPBttn:

[legend]

Public Member Functions
	LtchMPBttn (GPIO_TypeDef *mpbttnPort, const uint16_t &mpbttnPin, const bool &pulledUp=true, const bool &typeNO=true, const unsigned long int &dbncTimeOrigSett=0, const unsigned long int &strtDelay=0)
	Class constructor.

	LtchMPBttn (gpioPinId_t mpbttnPinStrct, const bool &pulledUp=true, const bool &typeNO=true, const unsigned long int &dbncTimeOrigSett=0, const unsigned long int &strtDelay=0)
	Class constructor.

virtual bool	begin (const unsigned long int &pollDelayMs=_StdPollDelay)
	See DbncdMPBttn::begin(const unsigned long int)

void	clrStatus (bool clrIsOn=true)
	See DbncdMPBttn::clrStatus(bool)

const bool	getIsLatched () const
	Returns the value of the isLatched attribute flag, indicating the Latched or Unlatched condition of the object.

bool	getTrnOffASAP ()
	Returns the value of the trnOffASfAP class attribute flag.

const bool	getUnlatchPend () const
	Returns the value of the validUnlatchPending attribute.

const bool	getUnlatchRlsPend () const
	Returns the value of the validUnlatchReleasePending attribute.

bool	resetFda ()
	See DbncdMPBttn::resetFda()

void	setTrnOffASAP (const bool &newVal)
	Sets the value of the trnOffASAP attribute flag.

void	setUnlatchPend (const bool &newVal)
	Sets the value of the validUnlatchPending attribute.

void	setUnlatchRlsPend (const bool &newVal)
	Sets the value of the validUnlatchRlsPending attribute.

bool	unlatch ()
	Sets the values of the flags needed to unlatch a latched MPB.

Public Member Functions inherited from DbncdDlydMPBttn
	DbncdDlydMPBttn ()
	Default constructor.

	DbncdDlydMPBttn (GPIO_TypeDef *mpbttnPort, const uint16_t &mpbttnPin, const bool &pulledUp=true, const bool &typeNO=true, const unsigned long int &dbncTimeOrigSett=0, const unsigned long int &strtDelay=0)
	Class constructor.

	DbncdDlydMPBttn (gpioPinId_t mpbttnPinStrct, const bool &pulledUp=true, const bool &typeNO=true, const unsigned long int &dbncTimeOrigSett=0, const unsigned long int &strtDelay=0)
	Class constructor.

bool	init (GPIO_TypeDef *mpbttnPort, const uint16_t &mpbttnPin, const bool &pulledUp=true, const bool &typeNO=true, const unsigned long int &dbncTimeOrigSett=0, const unsigned long int &strtDelay=0)
	see DbncdMPBttn::init(GPIO_TypeDef*, const uint16_t, const bool, const bool, const unsigned long int)

bool	init (gpioPinId_t mpbttnPinStrct, const bool &pulledUp=true, const bool &typeNO=true, const unsigned long int &dbncTimeOrigSett=0, const unsigned long int &strtDelay=0)
	see DbncdMPBttn::init(gpioPinId_t, const bool, const bool, const unsigned long int)

void	setStrtDelay (const unsigned long int &newStrtDelay)
	Sets a new value to the delay attribute.

Public Member Functions inherited from DbncdMPBttn
	DbncdMPBttn ()
	Default class constructor.

	DbncdMPBttn (GPIO_TypeDef *mpbttnPort, const uint16_t &mpbttnPin, const bool &pulledUp=true, const bool &typeNO=true, const unsigned long int &dbncTimeOrigSett=0)
	Class constructor.

	DbncdMPBttn (gpioPinId_t mpbttnPinStrct, const bool &pulledUp=true, const bool &typeNO=true, const unsigned long int &dbncTimeOrigSett=0)
	Class constructor.

virtual	~DbncdMPBttn ()
	Default virtual destructor.

void	clrStatus (bool clrIsOn=true)
	Clears and resets flags, timers and counters modified through the object's signals processing.

void	disable ()
	Disables the input signal processing, ignoring the changes of its values.

void	enable ()
	Enables the input signal processing.

bool	end ()
	Detaches the object from the timer that monitors the input pins, compute and updates the object's status. The timer daemon entry is deleted for the object.

const unsigned long int	getCurDbncTime () const
	Returns the current debounce period time set for the object.

fncPtrType	getFnWhnTrnOff ()
	Returns the function that is set to execute every time the object enters the Off State.

fncPtrType	getFnWhnTrnOn ()
	Returns the function that is set to execute every time the object enters the On State.

const bool	getIsEnabled () const
	Returns the value of the isEnabled attribute flag, indicating the Enabled or Disabled status of the object.

const bool	getIsOn () const
	Returns the value of the isOn attribute flag.

const bool	getIsOnDisabled () const
	Returns the value of the isOnDisabled attribute flag.

const uint32_t	getOtptsSttsPkgd ()
	Returns the relevant attribute flags values for the object state encoded as a 32 bits value, required to pass current state of the object to another thread/task managing the outputs.

const bool	getOutputsChange () const
	Returns the value of the outputsChange attribute flag.

unsigned long int	getStrtDelay ()
	Returns the current value of strtDelay attribute.

const TaskHandle_t	getTaskToNotify () const
	Returns the task to be notified by the object when its output flags changes.

const TaskHandle_t	getTaskWhileOn ()
	Returns the task to be run (resumed) while the object is in the On state.

bool	init (GPIO_TypeDef *mpbttnPort, const uint16_t &mpbttnPin, const bool &pulledUp=true, const bool &typeNO=true, const unsigned long int &dbncTimeOrigSett=0)
	Initializes an object instantiated by the default constructor.

bool	init (gpioPinId_t mpbttnPinStrct, const bool &pulledUp=true, const bool &typeNO=true, const unsigned long int &dbncTimeOrigSett=0)
	Initializes an object instantiated by the default constructor.

bool	pause ()
	Pauses the software timer updating the computation of the object's internal flags value.

void	resetDbncTime ()
	Resets the debounce process time of the object to the value used at instantiation.

void	resetFda ()
	Resets the MPB behavior automaton to it's Initial or Start State

bool	resume ()
	Restarts the software timer updating the calculation of the object internal flags.

bool	setDbncTime (const unsigned long int &newDbncTime)
	Sets the debounce process time.

void	setFnWhnTrnOffPtr (void(*newFnWhnTrnOff)())
	Sets the function that will be called to execute every time the object enters the Off State.

void	setFnWhnTrnOnPtr (void(*newFnWhnTrnOn)())
	Sets the function that will be called to execute every time the object enters the On State.

void	setIsOnDisabled (const bool &newIsOnDisabled)
	Sets the value of the isOnDisabled attribute.

void	setOutputsChange (bool newOutputChange)
	Sets the value of the attribute flag indicating if a change took place in any of the output attribute flags (IsOn included).

void	setTaskToNotify (const TaskHandle_t &newTaskHandle)
	Sets the pointer to the task to be notified by the object when its output attribute flags changes.

virtual void	setTaskWhileOn (const TaskHandle_t &newTaskHandle)
	Sets the handle to the task to be run while the object is in the On state.

Detailed Description

Abstract class, base to model Latched Debounced Delayed MPBs (LDD-MPB).

Latched DD-MPB are MPBs whose distinctive characteristic is that implement switches that keep the ON state since the moment the input signal is stable (debouncing + Delay process), and keeps the ON state after the MPB is released and until an event un-latches them, setting them free to move to the Off State. The un-latching mechanisms include but are not limited to: same MPB presses, timers, other MPB presses, other GPIO external un-latch signals or the use of the public method unlatch(). The different un-latching events defines the sub-classes of the LDD-MPB class.

Attention

The range of signals accepted by the instantiated objects to execute the unlatch process is diverse, and their nature and characteristics might affect the expected switch behavior. While some of the signals might be instantaneous, meaning that the start of the unlatch signal is coincidental with the end of the unlatch signal, some others might extend the time between both ends. To accommodate the logic required by each subclass the **_unlatch_** process is then split into two stages:

Validated Unlatch signal (or Validated Unlatch signal start).
Validated Unlatch Release signal (or Validated Unlatch signal end). The class provides methods to generate the signals independently of the designated signal sources to modify the instantiated object behavior if needed by the design requirements, Validated Unlatch signal (see LtchMPBttn::setUnlatchPend(const bool), Validated Unlatch Release signal (see LtchMPBttn::setUnlatchRlsPend(const bool), or to set both flags to generate an unlatch (see LtchMPBttn::unlatch().

Warning: Generating the unlatach related flags independently of the unlatch signals provided by the LDD-MPB subclasses might result in unexpected behavior, which might generate the locking of the object with it's unexpected consequences.

Constructor & Destructor Documentation

◆ LtchMPBttn() [1/2]

LtchMPBttn::LtchMPBttn	(	GPIO_TypeDef *	mpbttnPort,
		const uint16_t &	mpbttnPin,
		const bool &	pulledUp = true,
		const bool &	typeNO = true,
		const unsigned long int &	dbncTimeOrigSett = 0,
		const unsigned long int &	strtDelay = 0 )

Class constructor.

Note: For the parameters see DbncdDlydMPBttn(GPIO_TypeDef*, const uint16_t, const bool, const bool, const unsigned long int, const unsigned long int)

◆ LtchMPBttn() [2/2]

LtchMPBttn::LtchMPBttn	(	gpioPinId_t	mpbttnPinStrct,
		const bool &	pulledUp = true,
		const bool &	typeNO = true,
		const unsigned long int &	dbncTimeOrigSett = 0,
		const unsigned long int &	strtDelay = 0 )

Class constructor.

Parameters

mpbttnPinStrct GPIO port and Pin identification defined as a single gpioPinId_t parameter.

For the rest of the parameters see DbncdMPBttn(GPIO_TypeDef*, const uint16_t, const bool, const bool, const unsigned long int)

Member Function Documentation

◆ getIsLatched()

const bool LtchMPBttn::getIsLatched ( ) const

Returns the value of the isLatched attribute flag, indicating the Latched or Unlatched condition of the object.

The isLatched flag is automatically updated periodically by the timer that calculates the object state.

Return values

true	the object is in Latched condition.
false	The object is in Unlatched condition.

◆ getTrnOffASAP()

bool LtchMPBttn::getTrnOffASAP ( )

Returns the value of the trnOffASfAP class attribute flag.

As described in the class characteristics the unlatching process comprises two stages, Validated Unlatch Signal and Validates unlatch Release Signal, that might be generated simultaneously or separated in time. The trnOffASAP attribute flag sets the behavior of the MPB in the second case.

If the trnOffASAP attribute flag is set (true) the isOn flag will be reseted as soon as the Validated Unlatch Signal is detected
If the trnOffASAP flag is reset (false) the isOn flag will be reseted only when the Validated Unlatch Release signal is detected.

Returns: The current value of the trnOffASAP attribute flag.

◆ getUnlatchPend()

const bool LtchMPBttn::getUnlatchPend ( ) const

Returns the value of the validUnlatchPending attribute.

The validUnlatchPending holds the existence of a still to be processed confirmed unlatch signal. Getting it's current value makes possible taking actions before the unlatch process is started or even discard it completely by using the setUnlatchPend(const bool) method.

Returns: The current value of the validUnlatchPending attribute.

◆ getUnlatchRlsPend()

const bool LtchMPBttn::getUnlatchRlsPend ( ) const

Returns the value of the validUnlatchReleasePending attribute.

The validUnlatchReleasePending holds the existence of a still to be processed confirmed unlatch released signal. Getting it's current value makes possible taking actions before the unlatch process ends or even discard it completely by using the setUnlatchRlsPend(const bool) method.

Returns: The current value of the validUnlatchReleasePending attribute.

◆ setTrnOffASAP()

void LtchMPBttn::setTrnOffASAP ( const bool & newVal )

Sets the value of the trnOffASAP attribute flag.

As explained in the class description, to accommodate to different sources of the unlatch signal, the unlatching process has been splitted in two steps:

Validated Unlatch signal (or Validated Unlatch signal start).
Validated Unlatch Release signal (or Validated Unlatch signal end). If trnOffASAP=true, the isOn attribute flag will be reset at the "Validated Unlatch Signal Start" stage. If trnOffASAP=false, the isOn attribute flag will be reset at the "Validated Unlatch Signal End" stage.

Parameters

newVal New value for the trnOffASAP attribute

◆ setUnlatchPend()

void LtchMPBttn::setUnlatchPend ( const bool & newVal )

Sets the value of the validUnlatchPending attribute.

By setting the value of the validUnlatchPending it's possible to modify the current MPB status by generating an unlatch signal or by canceling an existent unlatch signal.

Parameters

newVal New value for the validUnlatchPending attribute

Here is the caller graph for this function:

◆ setUnlatchRlsPend()

void LtchMPBttn::setUnlatchRlsPend ( const bool & newVal )

Sets the value of the validUnlatchRlsPending attribute.

By setting the value of the validUnlatchPending and validUnlatchReleasePending flags it's possible to modify the current MPB status by generating an unlatch signal or by canceling an existent unlatch signal.

Parameters

newVal New value for the validUnlatchReleasePending attribute

Here is the caller graph for this function:

◆ unlatch()

bool LtchMPBttn::unlatch ( )

Sets the values of the flags needed to unlatch a latched MPB.

By setting the values of the validUnlatchPending and validUnlatchReleasePending flags it's possible to modify the current MPB status by generating an unlatch signal.

Return values

true	the object was latched and the unlatch flags were set.
false	the object was not latched, no unlatch flags were set.

Note: Setting the values of the validUnlatchPending and validUnlatchReleasePending flags does not implicate immediate unlatching the MPB but providing the unlatching signals. The unlatching signals will be processed by the MPB according to it's embedded behavioral pattern. For example, the signals will be processed if the MPB is in Enabled state and latched, but will be ignored if the MPB is disabled.

Here is the call graph for this function:

Public Member Functions

Detailed Description

Constructor & Destructor Documentation

◆ LtchMPBttn() [1/2]

◆ LtchMPBttn() [2/2]

Member Function Documentation

◆ getIsLatched()

◆ getTrnOffASAP()

◆ getUnlatchPend()

◆ getUnlatchRlsPend()

◆ setTrnOffASAP()

◆ setUnlatchPend()

◆ setUnlatchRlsPend()

◆ unlatch()