Line data    Source code

       1             : #include "Button.hpp"
       2             : 
       3             : BEGIN_CS_NAMESPACE
       4             : 
       5             : using namespace ExtIO;
       6             : 
       7          80 : Button::Button(pin_t pin) : pin(pin) {}
       8             : 
       9          37 : void Button::begin() { ExtIO::pinMode(pin, INPUT_PULLUP); }
      10             : 
      11           0 : void Button::invert() { invertState = true; }
      12             : 
      13             : #ifndef INDIVIDUAL_BUTTON_INVERT
      14             : bool Button::invertState = false;
      15             : #endif
      16             : 
      17         172 : Button::State Button::update() {
      18             :     // read the button state and invert it if "invertState" is true
      19         172 :     bool input = ExtIO::digitalRead(pin) ^ invertState;
      20         172 :     bool prevState = debouncedState & 0b01;
      21         172 :     unsigned long now = millis();
      22         172 :     if (now - prevBounceTime > debounceTime) { // wait for state to stabilize
      23         160 :         debouncedState = static_cast<State>((prevState << 1) | input);
      24         160 :     } else {
      25          12 :         debouncedState = static_cast<State>((prevState << 1) | prevState);
      26             :     }
      27         172 :     if (input != prevInput) { // Button is pressed, released or bounces
      28          81 :         prevBounceTime = now;
      29          81 :         prevInput = input;
      30          81 :     }
      31         172 :     return debouncedState;
      32             : }
      33             : 
      34           0 : Button::State Button::getState() const { return debouncedState; }
      35             : 
      36           0 : const __FlashStringHelper *Button::getName(Button::State state) {
      37           0 :     switch (state) {
      38           0 :         case Button::Pressed: return F("Pressed");
      39           0 :         case Button::Released: return F("Released");
      40           0 :         case Button::Falling: return F("Falling");
      41           0 :         case Button::Rising: return F("Rising");
      42           0 :         default: return F("<invalid>"); // Keeps the compiler happy
      43             :     }
      44           0 : }
      45             : 
      46           0 : unsigned long Button::stableTime() { return millis() - prevBounceTime; }
      47             : 
      48             : END_CS_NAMESPACE