import time
from machine import Pin
from picozero import Speaker

# creating a Speaker object
buz_pin = Speaker(1)
time.sleep(0.1) # Wait for USB to become ready

led_pin = Pin(0, Pin.OUT)

def siren(total_time, total_pauses):
    pause_rate = total_time / total_pauses
    pauses = 0
    while pauses < total_pauses:
        if pauses % 2 is 0:
            led_pin.on()
            buz_pin.off()
            time.sleep(pause_rate)
        else:
            led_pin.off()
            buz_pin.on()
            time.sleep(pause_rate)
        pauses += 1

def siren2(pauses):
    pause_pos = 0
    while pause_pos < len(pauses):
        led_pin.on()
        buz_pin.off()
        time.sleep(pauses[pause_pos])
        led_pin.off()
        buz_pin.on()
        time.sleep(pauses[pause_pos])
        pause_pos += 1

def siren2_or_1(total_time, total_pauses, pauses=[]):
    if len(pauses) > 0:
        siren2(pauses)
    else:
        siren(total_time, total_pauses)



TOTAL_TIME = 2
TOTAL_PAUSES = 10
pauses = [0.1, 0.2, 0.3, 0.4, 0.3, 0.2]
while True:
    siren2_or_1(TOTAL_TIME, TOTAL_PAUSES, pauses)