from machine import Pin, PWM, Timer
from utime import sleep
from tones import tones

buzzer = PWM(Pin(15))
button = Pin(16, Pin.IN, Pin.PULL_DOWN) 

song = ["E5","G5","A5","P","E5","G5","B5","A5","P","E5","G5","A5","P","G5","E5"]

def playtone(frequency):
    print("Playing tone:", frequency)  # Add this line
    # Exercise 1 : Duty cycle 
    buzzer.duty_u16(100)
    buzzer.freq(frequency)

def bequiet():
    print("Be quiet")
    # Exercise 1 : Duty cycle
    buzzer.duty_u16(0)

def playsong(mysong):
    print("Playing song")
    for i in range(len(mysong)):
        
        if (mysong[i] == "P"):
            bequiet()
        else:
            playtone(tones[mysong[i]])
        sleep(0.3)
    bequiet()

# Exercise 2 : Control through GPIO IN
while True:
    button_state = button.value()
    if button_state == 1:
        print("Button is pressed (ON)")
        playsong(song)
    else:
        print("Button is released (OFF)")
        bequiet()


# Exercise 3 : Timer based alarm
# def interruption_handler(timer):
#     playsong(song)

# # Figure out the period based on the length of the song
# # Switch b/w one-shot or periodic
# if __name__ == "__main__":
#     soft_timer = Timer(mode=Timer.PERIODIC, period=5000, callback=interruption_handler)