# 05-2 Buzzer with Button & LED
# 23/05/2022
# Mr Birtles (SBI)

from machine import Pin, PWM
from utime import sleep

button = machine.Pin(0, machine.Pin.IN, machine.Pin.PULL_UP)
led1_external = machine.Pin(27,machine.Pin.OUT)
led2_external = machine.Pin(21,machine.Pin.OUT)
led3_external = machine.Pin(17,machine.Pin.OUT)
led4_external = machine.Pin(20,machine.Pin.OUT)
buzzer1 = PWM(Pin(8))
buzzer1.freq(500)
buzzer2 = PWM(Pin(13))
buzzer2.freq(100)
buzzer3 = PWM(Pin(5))
buzzer3.freq(300)
buzzer4 = PWM(Pin(28))
buzzer4.freq(500)

while True:
  if not button.value():
	print('Red button pressed!')
	buzzer1.duty_u16(300)
	sleep(0.1)
	buzzer1.duty_u16(0)
	led1_external.toggle()
	sleep(0.1)
	buzzer2.duty_u16(300)
	sleep(0.1)
	buzzer2.duty_u16(0)
	led2_external.toggle()
	sleep(0.1)
	buzzer3.duty_u16(300)
	sleep(0.1)
	buzzer3.duty_u16(0)
	led3_external.toggle()
	sleep(0.1)
	buzzer4.duty_u16(300)
	sleep(0.1)
	buzzer4.duty_u16(0)
	led4_external.toggle()
	sleep(0.1)