void PushButton::check() {
uint8_t newState;
// Get the new state from the pin
newState = digitalRead(_pin);
// Button state changed?
if(newState != _lastState)
_lastDebounceTime = millis();
// Is the debounce delay reached and is it a new state at all?
if ((millis() - _lastDebounceTime) > _debounceDelay && _state != newState) {
// The new state exceeded the debounce delay, take it as the actual statue
_state = newState;
// 0 == active, generate a press event
if(_state == 0 && _pressed != NULL)
_pressed();
if(_state == 1)
{
if((millis() - _pressTime) < _longPressDelay && _released != NULL)
_released();
else if (_longreleased != NULL)
_longreleased();
}
_pressTime = millis();
}
// Save the state...
_lastState = newState;
}
// show the screen
bool Display::show ()
{
if (_quit)
{
if (_died)
_dump();
return false;
}
if (!_window)
return true;
// poll events
SDL_Event e;
while (SDL_PollEvent(&e))
switch (e.type)
{
case SDL_QUIT:
quit();
return false;
case SDL_KEYDOWN:
_pressed(e.key.keysym.sym);
break;
case SDL_KEYUP:
_released(e.key.keysym.sym);
break;
default:
break;
}
// get delta time
tick_t now = _now();
tick_t diff = now - _time;
_time = now;
// eliminate unusual framerate errors (dragging, etc)
if (diff > (tick_s / MinFPS))
diff = tick_s / MinFPS;
else if (diff == 0)
diff = tick_s / MaxFPS;
if (_view != nullptr)
{
auto dt = diff / double(tick_s);
_view->update(this, dt);
_view->draw(this);
}
else
color(.5f, .8f, 1.f).glApplyClear();
SDL_GL_SwapWindow(_window);
/* const double sleep_s = 1.0 / 100.0;
const time_t sleep_t = time_t(tick_s * sleep_s);
auto n = _now();
while ((_now() - n) < sleep_t)
; */
SDL_Delay(3);
return true;
}
