The Noisemaker

// 03 The Noisemaker
// The Maker's Book of Origins, chapter 03. Upload it, then turn back to the book.
// makernest.com/origins/03
// MakerNest Origins is a brand of Innointel Global Private Limited.

#include <MakerNestOrigins.h>

void setup() {
  machine.begin(3, "03|NOISE-|MAKER");
  machine.homeShows(SHOW_A | SHOW_LINE);
  machine.useScreen(SCR_NORMAL_COLOUR);      // the first screen
  machine.useScreen(SCR_WHEN_COLD);          // the second screen: RING, BUZZER, BOTH or ALWAYS
  machine.useScreen(SCR_COLD_LINE);
  machine.useScreen(SCR_TEST);
}

void loop() {
  machine.update();
  bool cold = machine.settings.coldLine != NOT_SET && machine.temperatureA() < machine.settings.coldLine;
  uint8_t w = machine.settings.whenCold;

  if (cold && (w == WHEN_RING || w == WHEN_BOTH)) machine.ring(RED); else machine.ringNormal();
  if (w == WHEN_ALWAYS) machine.buzzer(true);                  // ALWAYS: the sensor is still there. It has stopped asking.
  else { machine.buzzer(false); machine.buzzerBeep(cold && (w == WHEN_BUZZER || w == WHEN_BOTH)); }
}

// MakerNest Origins · bench 03 · a buzzer that sings two notes
// A passive buzzer plays whatever pitch the board sends it.

const int BUZZER_PIN = 12;   // the buzzer's S pin is on row 12

const int NOTE_ONE = 523;    // C, in hertz: vibrations every second
const int NOTE_TWO = 659;    // E
const int LENGTH = 300;      // how long each note lasts, in milliseconds

void setup() {
  pinMode(BUZZER_PIN, OUTPUT);
}

void loop() {
  tone(BUZZER_PIN, NOTE_ONE, LENGTH);
  delay(LENGTH + 50);
  tone(BUZZER_PIN, NOTE_TWO, LENGTH);
  delay(LENGTH + 50);
  delay(2000);               // quiet for two seconds, then again
}