#include "PushButton.h"

int8_t PushButton::states[] = {0, 1, -1 ,0};

PushButton::PushButton(uint8_t pin_) {
  pin = pin_;
	pinMode(pin, INPUT);
	digitalWrite(pin, HIGH);
}

uint8_t PushButton::getState(uint8_t debounce) {
  if (millis() > debounce * 10 + lastMillis) {
    lastMillis = millis();
		return !digitalRead(pin);
	}
	return 0;
}

int8_t PushButton::getEdge() {
  old_state <<= 1;
  old_state |= !digitalRead(pin) & 0x01;
  return PushButton::states[old_state & 0x03];
}

uint8_t PushButton::getPressed() {
	return getEdge() == 1;
}

uint8_t PushButton::getReleased() {
	return getEdge() == -1;
}
// vim:ft=arduino