SensESP 3.0.1
Universal Signal K sensor toolkit ESP32
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sensesp::Debounce< T > Class Template Reference

Implements debounce code for a button or switch. More...

#include <sensesp/transforms/debounce.h>

Inheritance diagram for sensesp::Debounce< T >:
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Public Member Functions

 Debounce (int ms_min_delay=15, String config_path="")
 
virtual void set (const T &input) override
 
- Public Member Functions inherited from sensesp::SymmetricTransform< T >
 SymmetricTransform (String config_path="")
 
- Public Member Functions inherited from sensesp::Transform< T, T >
 Transform (String config_path="")
 
Transform< T, T > * connect_from (ValueProducer< T > *producer0, ValueProducer< T > *producer1=NULL, ValueProducer< T > *producer2=NULL, ValueProducer< T > *producer3=NULL, ValueProducer< T > *producer4=NULL)
 
- Public Member Functions inherited from sensesp::TransformBase
 TransformBase (const String &config_path)
 
- Public Member Functions inherited from sensesp::FileSystemSaveable
 FileSystemSaveable (const String &config_path)
 
virtual bool load () override
 Load and populate the object from a persistent storage.
 
virtual bool save () override
 Save the object to a persistent storage.
 
virtual bool clear () override
 Delete the data from a persistent storage.
 
bool find_config_file (const String &config_path, String &filename)
 
- Public Member Functions inherited from sensesp::Saveable
 Saveable (const String &config_path)
 
virtual bool refresh ()
 Refresh the object. This may or may not access the persistent storage but is not expected to overwrite the object's state.
 
const String & get_config_path () const
 
- Public Member Functions inherited from sensesp::Serializable
- Public Member Functions inherited from sensesp::ValueConsumer< T >
virtual void set_input (const T &new_value)
 
void connect_from (ValueProducer< T > *producer)
 
- Public Member Functions inherited from sensesp::ValueProducer< T >
 ValueProducer ()
 
 ValueProducer (const T &initial_value)
 
virtual const T & get () const
 
template<typename VConsumer >
std::enable_if< std::is_base_of< ValueConsumer< typenameVConsumer::input_type >, VConsumer >::value &&std::is_convertible< T, typenameVConsumer::input_type >::value, std::shared_ptr< VConsumer > >::type connect_to (std::shared_ptr< VConsumer > consumer)
 Connect a producer to a transform with a different input type.
 
template<typename VConsumer >
std::enable_if< std::is_base_of< ValueConsumer< typenameVConsumer::input_type >, VConsumer >::value &&std::is_convertible< T, typenameVConsumer::input_type >::value, VConsumer * >::type connect_to (VConsumer *consumer)
 
template<typename VConsumer >
std::enable_if< std::is_base_of< ValueConsumer< typenameVConsumer::input_type >, VConsumer >::value &&std::is_convertible< T, typenameVConsumer::input_type >::value, VConsumer * >::type connect_to (VConsumer &consumer)
 
void emit (const T &new_value)
 
- Public Member Functions inherited from sensesp::Observable
 Observable ()
 
 Observable (Observable &&other)
 Move constructor.
 
void notify ()
 
void attach (std::function< void()> observer)
 

Additional Inherited Members

- Public Types inherited from sensesp::ValueConsumer< T >
using input_type = T
 
- Static Public Member Functions inherited from sensesp::TransformBase
static const std::set< TransformBase * > & get_transforms ()
 
- Protected Attributes inherited from sensesp::Saveable
const String config_path_
 
- Protected Attributes inherited from sensesp::ValueProducer< T >
output_
 

Detailed Description

template<class T>
class sensesp::Debounce< T >

Implements debounce code for a button or switch.

It's a passthrough transform that will output a value only if it's different from the previous output, and only if it's been ms_min_delay ms since the input was received.

Template Parameters
TThe type of value being passed through Debounce.
Parameters
ms_min_delayThe minimum amount of time that must have passed since the input was received by this Transform in order for the output to occur. If you are using this to debounce the output from DigitalInputChange, ms_min_delay should be set at least a little bit longer than DigitalInputChange::read_delay.

DigitalInputChange::read_delay is 10 ms by default, and Debounce::ms_min_delay is 15 ms by default. If that doesn't adequately debounce your button or switch, adjust both of those values until it does.

Parameters
config_pathThe path for configuring ms_min_delay with the Config UI.
See also
DigitalInputChange

Definition at line 32 of file debounce.h.

Constructor & Destructor Documentation

◆ Debounce()

template<class T >
sensesp::Debounce< T >::Debounce ( int ms_min_delay = 15,
String config_path = "" )
inline

Definition at line 34 of file debounce.h.

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Member Function Documentation

◆ set()

template<class T >
virtual void sensesp::Debounce< T >::set ( const T & new_value)
inlineoverridevirtual

Used to set an input of this consumer. It is called automatically by a ValueProducer but can also be called manually.

Parameters
new_valuethe value of the input

Reimplemented from sensesp::ValueConsumer< T >.

Definition at line 39 of file debounce.h.

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