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Add support for active high buttons #19

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Add support for active high buttons #19

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19 changes: 11 additions & 8 deletions src/ezButton.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -31,10 +31,13 @@

#include <ezButton.h>

ezButton::ezButton(int pin): ezButton(pin, INPUT_PULLUP) {};
ezButton::ezButton(int pin): ezButton(pin, INPUT_PULLUP, ACTIVE_LOW) {};

ezButton::ezButton(int pin, int mode) {
ezButton::ezButton(int pin, int mode): ezButton(pin, mode, ACTIVE_LOW) {};

ezButton::ezButton(int pin, int mode, int active) {
btnPin = pin;
activeMode = active;
debounceTime = 0;
count = 0;
countMode = COUNT_FALLING;
Expand All @@ -61,17 +64,17 @@ int ezButton::getStateRaw(void) {
}

bool ezButton::isPressed(void) {
if(previousSteadyState == HIGH && lastSteadyState == LOW)
return true;
if (activeMode == ACTIVE_LOW)
return (previousSteadyState == HIGH && lastSteadyState == LOW);
else
return false;
return (previousSteadyState == LOW && lastSteadyState == HIGH);
}

bool ezButton::isReleased(void) {
if(previousSteadyState == LOW && lastSteadyState == HIGH)
return true;
if (activeMode == ACTIVE_LOW)
return (previousSteadyState == LOW && lastSteadyState == HIGH);
else
return false;
return (previousSteadyState == HIGH && lastSteadyState == LOW);
}

void ezButton::setCountMode(int mode) {
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4 changes: 4 additions & 0 deletions src/ezButton.h
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Original file line number Diff line number Diff line change
Expand Up @@ -38,10 +38,14 @@
#define COUNT_RISING 1
#define COUNT_BOTH 2

#define ACTIVE_LOW 0
#define ACTIVE_HIGH 1

class ezButton
{
private:
int btnPin;
int activeMode;
unsigned long debounceTime;
unsigned long count;
int countMode;
Expand Down