#include "beeper.h"

#include <Arduino.h>

#define BEEPER_GPIO           22
#define BEEPER_INVERT         true

unsigned long beeperDuration = 0;

unsigned long beeperLast = 0;

void beeperEnable(const bool enabled) {
  digitalWrite(BEEPER_GPIO, (enabled ^ BEEPER_INVERT) ? HIGH : LOW);
}

void beeperSetup() {
  pinMode(BEEPER_GPIO, OUTPUT);
  beeperEnable(false);
}

void beeperLoop() {
  const auto now = millis();
  if (beeperDuration != 0 && now - beeperLast >= beeperDuration) {
    beeperEnable(false);
    beeperDuration = 0;
  }
}

void beep(const unsigned long duration) {
  beeperDuration = duration;
  beeperLast = millis();
  beeperEnable(beeperDuration > 0);
}