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TouchPin added #11

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TouchPin added #11

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a522c21
TouchPin added
StandBY76 Feb 25, 2022
6be4471
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StandBY76 Mar 20, 2022
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109 changes: 108 additions & 1 deletion ClickButton.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -45,6 +45,7 @@ NOTE!


History:
2022.02.23 - Touch pin button for ESP32 added
2013.08.29 - Some small clean-up of code, more sensible variable names etc.
Added another example code for multiple buttons in an object array
2013.04.23 - A "minor" debugging: active-high buttons now work (wops)!
Expand All @@ -57,6 +58,7 @@ NOTE!

#include "ClickButton.h"


ClickButton::ClickButton(uint8_t buttonPin)
{
_pin = buttonPin;
Expand All @@ -67,10 +69,12 @@ ClickButton::ClickButton(uint8_t buttonPin)
clicks = 0;
depressed = false;
_lastBounceTime= 0;
_longStartTime = 0;
debounceTime = 20; // Debounce timer in ms
multiclickTime = 250; // Time limit for multi clicks
longClickTime = 1000; // time until long clicks register
changed = false;
holdTime = 0;
pinMode(_pin, INPUT);
}

Expand All @@ -85,13 +89,16 @@ ClickButton::ClickButton(uint8_t buttonPin, boolean activeType)
clicks = 0;
depressed = 0;
_lastBounceTime= 0;
_longStartTime = 0;
debounceTime = 20; // Debounce timer in ms
multiclickTime = 250; // Time limit for multi clicks
longClickTime = 1000; // time until long clicks register
changed = false;
holdTime = 0;
pinMode(_pin, INPUT);
}


ClickButton::ClickButton(uint8_t buttonPin, boolean activeType, boolean internalPullup)
{
_pin = buttonPin;
Expand All @@ -102,10 +109,12 @@ ClickButton::ClickButton(uint8_t buttonPin, boolean activeType, boolean internal
clicks = 0;
depressed = 0;
_lastBounceTime= 0;
_longStartTime = 0;
debounceTime = 20; // Debounce timer in ms
multiclickTime = 250; // Time limit for multi clicks
longClickTime = 1000; // time until "long" click register
changed = false;
holdTime = 0;
//pinMode(_pin, INPUT);
// Turn on internal pullup resistor if applicable
//if (_activeHigh == LOW && internalPullup == CLICKBTN_PULLUP) digitalWrite(_pin,HIGH);
Expand All @@ -117,7 +126,6 @@ ClickButton::ClickButton(uint8_t buttonPin, boolean activeType, boolean internal
}



void ClickButton::Update()
{
long now = (long)millis(); // get current time
Expand Down Expand Up @@ -159,3 +167,102 @@ void ClickButton::Update()
}
}




TouchButton::TouchButton(uint8_t buttonPin, uint8_t thresholdValue)
{
_pin = buttonPin;
_activeHigh = LOW; // Assume active-low button
_btnState = !_activeHigh; // initial button state in active-high logic
_lastState = _btnState;
_clickCount = 0;
clicks = 0;
depressed = false;
_lastBounceTime= 0;
_longStartTime = 0;
debounceTime = 20; // Debounce timer in ms
multiclickTime = 250; // Time limit for multi clicks
longClickTime = 500; // time until long clicks register
changed = false;
holdTime = 0;
thresholdHigh = thresholdValue;
thresholdLow = 0;
}


TouchButton::TouchButton(uint8_t buttonPin, uint8_t thresholdValueHigh, uint8_t thresholdValueLow)
{
_pin = buttonPin;
_activeHigh = LOW; // Assume active-low button
_btnState = !_activeHigh; // initial button state in active-high logic
_lastState = _btnState;
_clickCount = 0;
clicks = 0;
depressed = false;
_lastBounceTime= 0;
_longStartTime = 0;
debounceTime = 20; // Debounce timer in ms
multiclickTime = 250; // Time limit for multi clicks
longClickTime = 500; // time until long clicks register
changed = false;
holdTime = 0;
thresholdHigh = thresholdValueHigh;
thresholdLow = thresholdValueLow;
}




void TouchButton::Update()
{
long now = (long)millis(); // get current time

#if defined(ESP32)
int touchValue = touchRead(_pin); // read touch pin value
if((touchValue < thresholdHigh) && (touchValue > thresholdLow)) // is a touch value in the range?
{
_btnState = LOW;
}
else
{
_btnState = HIGH;
}
#endif

// Make the button logic active-high in code
if (!_activeHigh) _btnState = !_btnState;

// If the switch changed, due to noise or a button press, reset the debounce timer
if (_btnState != _lastState) _lastBounceTime = now;


// debounce the button (Check if a stable, changed state has occured)
if (now - _lastBounceTime > debounceTime && _btnState != depressed)
{
depressed = _btnState;
if (depressed) _clickCount++;
}

if(_lastState == _btnState) changed = false;
_lastState = _btnState;

// If the button released state is stable, report nr of clicks and start new cycle
if (!depressed && (now - _lastBounceTime) > multiclickTime)
{
// positive count for released buttons
clicks = _clickCount;
_clickCount = 0;
if(clicks != 0) changed = true;
}

// Check for "long click"
if (depressed && (now - _lastBounceTime > longClickTime))
{
// negative count for long clicks
clicks = 0 - _clickCount;
_clickCount = 0;
if(clicks != 0) changed = true;
}
}

28 changes: 28 additions & 0 deletions ClickButton.h
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Original file line number Diff line number Diff line change
Expand Up @@ -24,14 +24,42 @@ class ClickButton
long multiclickTime;
long longClickTime;
boolean changed;
long holdTime; // How long has the button been held
private:
uint8_t _pin; // Arduino pin connected to the button
boolean _activeHigh; // Type of button: Active-low = 0 or active-high = 1
boolean _btnState; // Current appearant button state
boolean _lastState; // previous button reading
int _clickCount; // Number of button clicks within multiclickTime milliseconds
long _lastBounceTime; // the last time the button input pin was toggled, due to noise or a press
long _longStartTime; // When long click started
};


class TouchButton
{
public:
TouchButton(uint8_t buttonPin, uint8_t thresholdValue);
void Update();
int clicks; // button click counts to return
boolean depressed; // the currently debounced button (press) state (presumably it is not sad :)
long debounceTime;
long multiclickTime;
long longClickTime;
boolean changed;
long holdTime; // How long has the button been held
int thresholdHigh; // high threshold for touch button
int thresholdLow; // low threshold for touch button
private:
uint8_t _pin; // Arduino pin connected to the button
boolean _activeHigh; // Type of button: Active-low = 0 or active-high = 1
boolean _btnState; // Current appearant button state
boolean _lastState; // previous button reading
int _clickCount; // Number of button clicks within multiclickTime milliseconds
long _lastBounceTime; // the last time the button input pin was toggled, due to noise or a press
long _longStartTime; // When long click started
};


#endif

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