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button.cpp
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button.cpp
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/*
* Button. Yay
*/
#include "button.h"
void NoOp(){}
/*********************************************************************************************************
** Function name: ...
** Descriptions: ...
*********************************************************************************************************/
void Button::Init(uint8_t _pin, bool _onStateHigh)
{
this->pin = _pin;
this->onStateHigh = _onStateHigh;
// initialize all click functions to no operation
for(int i = 0; i < BUTTON_MAX_PRESSES; i++){
this->clickFunctions[i] = NoOp;
}
// initialize all hold functions to no operation
for(int i = 0; i < BUTTON_MAX_HOLDS; i++){
this->holdFunctions[i] = NoOp;
}
}
/*********************************************************************************************************
** Function name: ...
** Descriptions: ...
*********************************************************************************************************/
Button::Button(uint8_t _pin, bool _onStateHigh)
{
this->Init(_pin, _onStateHigh);
}
/*********************************************************************************************************
** Function name: ...
** Descriptions: ...
*********************************************************************************************************/
Button::Button(uint8_t _pin, bool _onStateHigh, int _multiplePressMaxGap, int _deBounceDuration)
{
this->Init(_pin, _onStateHigh);
this->SetGap(_multiplePressMaxGap);
this->SetDuration(_deBounceDuration);
}
/*********************************************************************************************************
** Function name: ...
** Descriptions: ...
*********************************************************************************************************/
void Button::Setup()
{
pinMode(this->pin, this->onStateHigh ? INPUT : INPUT_PULLUP);
}
/*********************************************************************************************************
** Function name: ...
** Descriptions: ...
*********************************************************************************************************/
void Button::SetGap(int _multiplePressMaxGap)
{
this->multiplePressMaxGap = _multiplePressMaxGap;
}
/*********************************************************************************************************
** Function name: ...
** Descriptions: ...
*********************************************************************************************************/
void Button::SetDuration(int _deBounceDuration)
{
this->deBounceDuration = _deBounceDuration;
}
/*********************************************************************************************************
** Function name: ...
** Descriptions: ...
*********************************************************************************************************/
void Button::SetClickAction(uint8_t _count, FunctionPointer _function)
{
this->clickFunctions[_count-1] = _function;
}
/*********************************************************************************************************
** Function name: ...
** Descriptions: ...
*********************************************************************************************************/
void Button::SetHoldAction(uint8_t _count, FunctionPointer _function)
{
this->holdFunctions[_count-1] = _function;
}
/*********************************************************************************************************
** Function name: ...
** Descriptions: ...
*********************************************************************************************************/
void Button::Pulse()
{
bool currentState = digitalRead(this->pin) == this->onStateHigh ? HIGH : LOW;
if(currentState != this->state)
{ // the state has changed
this->state = currentState;
if(currentState)
{ // the state is on
this->lastStateOnChangeMillis = millis();
}
else
{ // the state is off
this->lastStateOffChangeMillis = millis();
}
if(this->lastStateOffChangeMillis > this->lastStateOnChangeMillis)
{ // off happenned after on
unsigned long pressDuration = this->lastStateOffChangeMillis - this->lastStateOnChangeMillis;
if(pressDuration > this->deBounceDuration)
{ // the press was long enough to count for something
if(pressDuration < this->holdDuration)
{ // the press is a click
this->clickCount++;
this->lastClickEndedMillis = this->lastStateOffChangeMillis;
}
else
{ // the press is a hold
this->holdCount++;
this->lastHoldEndedMillis = this->lastStateOffChangeMillis;
}
}
}
}
if(this->clickCount > 0 && (this->lastClickEndedMillis + this->multiplePressMaxGap)<millis())
{ // we have pending clicks and there can be no more
if(this->clickCount > BUTTON_MAX_PRESSES)
{ // we have pressed more times than there are functions
this->clickCount = BUTTON_MAX_PRESSES;
}
this->clickFunctions[this->clickCount-1]();
this->clickCount = 0;
}
if(this->holdCount > 0 && (this->lastHoldEndedMillis + this->multiplePressMaxGap)<millis())
{ // we have pending holds and there can be no more
if(this->holdCount > BUTTON_MAX_HOLDS)
{ // we have pressed more times than there are functions
this->holdCount = BUTTON_MAX_HOLDS;
}
this->holdFunctions[this->holdCount-1]();
this->holdCount = 0;
}
}
/*********************************************************************************************************
* END FILE
*********************************************************************************************************/