from machine import Pin
import time

# Initialize the horn on pin 5
horn = Pin(5, Pin.OUT)

# Define the notes and their corresponding durations (in seconds)
notes = {
    'C': 0.5,
    'D': 0.5,
    'E': 0.5,
    'F': 0.5,
    'G': 0.5,
    'A': 0.5,
    'B': 0.5,
    'C5': 0.5
}

# Define the melody for "Happy Birthday"
melody = [
    'C', 'C', 'D', 'C', 'F', 'E',
    'C', 'C', 'D', 'C', 'G', 'F',
    'C', 'C', 'C5', 'A', 'F', 'E', 'D',
    'A#', 'A#', 'A', 'F', 'G', 'F'
]

# Define the duration of each note (in seconds)
durations = [
    0.5, 0.5, 1, 1, 1, 2,
    0.5, 0.5, 1, 1, 1, 2,
    0.5, 0.5, 1, 1, 1, 1, 2,
    0.5, 0.5, 1, 1, 1, 2
]

# Function to play a note
def play_tone(note, duration):
    horn.on()
    time.sleep(duration)
    horn.off()
    time.sleep(0.1)  # Short pause between notes

# Play the melody in an infinite loop
while True:
    for note, duration in zip(melody, durations):
        play_tone(note, duration)