Imports
from machine import Pin, PWM
import time

# Set up the Buzzer pin as PWM
buzzer = PWM(Pin(13)) # Set the buzzer to PWM mode

# Create our library of tone variables for "Jingle Bells"
C = 523
D = 587
E = 659
G = 784

# Create volume variable (Duty cycle)
volume = 30000

# Play the tune

# "Jin..."
buzzer.duty_u16(volume) # Volume up
buzzer.freq(E) # Set frequency to the E note
time.sleep(0.1) # Delay
buzzer.duty_u16(0) # Volume off
time.sleep(0.2) # Delay

# "...gle"
buzzer.duty_u16(volume)
buzzer.freq(E)
time.sleep(0.1)
buzzer.duty_u16(0)
time.sleep(0.2)

# "Bells"
buzzer.duty_u16(volume)
buzzer.freq(E)
time.sleep(0.1)
buzzer.duty_u16(0)
time.sleep(0.5) # longer delay

# "Jin..."
buzzer.duty_u16(volume)
buzzer.freq(E)
time.sleep(0.1)
buzzer.duty_u16(0)
time.sleep(0.2)

# "...gle"
buzzer.duty_u16(volume)
buzzer.freq(E)
time.sleep(0.1)
buzzer.duty_u16(0)
time.sleep(0.2)

# "Bells"
buzzer.duty_u16(volume)
buzzer.freq(E)
time.sleep(0.1)
buzzer.duty_u16(0)
time.sleep(0.5) # longer delay

# "Jin..."
buzzer.duty_u16(volume)
buzzer.freq(E)
time.sleep(0.1)
buzzer.duty_u16(0)
time.sleep(0.2)

# "...gle"
buzzer.duty_u16(volume)
buzzer.freq(G)
time.sleep(0.1)
buzzer.duty_u16(0)
time.sleep(0.2)

# "All"
buzzer.duty_u16(volume)
buzzer.freq(C)
time.sleep(0.1)
buzzer.duty_u16(0)
time.sleep(0.2)

# "The"
buzzer.duty_u16(volume)
buzzer.freq(D)
time.sleep(0.1)
buzzer.duty_u16(0)
time.sleep(0.2)

# "Way"
buzzer.duty_u16(volume)
buzzer.freq(E)
time.sleep(0.1)
buzzer.duty_u16(0)
time.sleep(0.2)

# Duty to 0 to turn the buzzer off
buzzer.duty_u16(0)