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#include <Adafruit_NeoPixel.h>
//Defining the notes' frequencies for the melody
#define NOTE_C5 523
#define NOTE_D5 587
#define NOTE_E5 659
//Time in millisecconds between first and second alarm
#define interval 10000
#define BTN_PIN 2
#define STRIP_PIN 3
#define PIEZZO_PIN 5
#define LED_COUNT 4
#define MELODY_LENGTH 4
int melodies[2][MELODY_LENGTH] =
{
{ NOTE_C5, NOTE_E5, NOTE_D5, 0 },
{ NOTE_C5, NOTE_C5, NOTE_C5, NOTE_C5 }
};
int noteDurations[] =
{
1000 / 8, 1000 / 8, 1000 / 8, 1000 / 2
};
Adafruit_NeoPixel strip = Adafruit_NeoPixel(LED_COUNT, STRIP_PIN, NEO_GRB + NEO_KHZ800);
unsigned long color = strip.Color(255, 255, 255);
bool ButtonIsPressed()
{
return digitalRead(BTN_PIN) == 1;
}
void ledToggle()
{
if(strip.getPixelColor(0) == strip.Color(0,0,0))
{
strip.fill(color);
}
else
{
strip.clear();
}
strip.show();
}
void playNote(int noteDuration, int noteToPlay)
{
tone(PIEZZO_PIN, noteToPlay, noteDuration);
delay(noteDuration * 1.30);
noTone(PIEZZO_PIN);
}
void PlayMelodyAndLEDs(int position)
{
for(int i = 0; i < MELODY_LENGTH; i++)
{
playNote(noteDurations[i], melodies[position][i]);
ledToggle();
delay(100);
}
}
void setup()
{
pinMode(BTN_PIN, INPUT);
pinMode(STRIP_PIN, OUTPUT);
pinMode(PIEZZO_PIN, OUTPUT);
strip.begin();
}
void Alarm(unsigned long timeSinceActivation)
{
while(ButtonIsPressed())
{
if(millis() - timeSinceActivation > interval)
{
color = strip.Color(255, 0, 0);
PlayMelodyAndLEDs(1);
}
else
{
color = strip.Color(255, 255, 0);
PlayMelodyAndLEDs(0);
}
}
}
void loop()
{
if(ButtonIsPressed())
{
Alarm(millis());
}
delay(100);
}
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