import time
import board
import digitalio
import pwmio

buzzer = pwmio.PWMOut(board.GP13, duty_cycle=0, frequency=440, variable_frequency=True)
led1 = digitalio.DigitalInOut(board.GP1)
led1.direction = digitalio.Direction.OUTPUT
led2 = digitalio.DigitalInOut(board.GP2)
led2.direction = digitalio.Direction.OUTPUT
led3 = digitalio.DigitalInOut(board.GP3)
led3.direction = digitalio.Direction.OUTPUT
led4 = digitalio.DigitalInOut(board.GP4)
led4.direction = digitalio.Direction.OUTPUT

pb1 = digitalio.DigitalInOut(board.GP20)
pb1.direction = digitalio.Direction.INPUT
pb2 = digitalio.DigitalInOut(board.GP21)
pb2.direction = digitalio.Direction.INPUT

while True:
    if (pb1.value == True):
        for i in range (5):
            led1.value = True
            led2.value = True
            led3.value = True
            led4.value = True
            time.sleep(0.5)
            led1.value = False
            led2.value = False
            led3.value = False
            led4.value = False
            time.sleep(0.5)

        buzzer.frequency = 1000 
        buzzer.duty_cycle = 32768  
        time.sleep(2)
        buzzer.duty_cycle = 0
        time.sleep(2)
    
    elif (pb2.value ==True):
         if (pb2.value == True):
            for i in range (5):
                led1.value = True
                time.sleep(0.5)
                led1.value = False
                time.sleep(0.5)
                led2.value = True
                time.sleep(0.5)
                led2.value = False
                time.sleep(0.5)
                led3.value = True
                time.sleep(0.5)
                led3.value = False
                time.sleep(0.5)
                led4.value = True
                time.sleep(0.5)
                led4.value = False
                time.sleep(0.5)
                led4.value = True
                time.sleep(0.5)
                led4.value = False
                time.sleep(0.5)
                led3.value = True
                time.sleep(0.5)
                led3.value = False
                time.sleep(0.5)
                led2.value = True
                time.sleep(0.5)
                led2.value = False
                time.sleep(0.5)
                led1.value = True
                time.sleep(0.5)
                led1.value = False
                time.sleep(0.5)
                

    else:
        led1.value = False
        led2.value = False
        led3.value = False
        led4.value = False
        buzzer.duty_cycle=0