from machine import Pin, ADC,PWM,Timer
from time import sleep
led = Pin(22,Pin.OUT)
button_pin19 = Pin(19, Pin.IN, Pin.PULL_DOWN)
pwm0 = PWM(Pin(21))
pwm0.freq(50)
inc = 25

tim1 = Timer(1)
tim2 = Timer(2)
pwm0.duty(25)



def handler_0(tim0):
  global inc
  if inc <= 125:
    pwm0.duty(inc)
    inc=inc+5
    print(inc)
  else:
    tim0.deinit()
    tim1.init(period=100, mode=Timer.PERIODIC, callback=handler_1)
tim0 = Timer(0)

tim0.init(period=500, mode=Timer.PERIODIC, callback=handler_0)

def handler_1(tim1):
  global inc
  if inc >5:
    pwm0.duty(inc)
    inc=inc-5
    print(inc)
  else:
    inc=25
    tim1.deinit()
    tim0.init(period=100, mode=Timer.PERIODIC, callback=handler_0)

def handler_2(tim2):
  led.value(not led.value())


temp=1
while True:
  if button_pin19.value() == 1 and temp == 1:
    tim2.init(period=500, mode=Timer.PERIODIC, callback=handler_2)
    temp = 0
  elif button_pin19.value() == 1 and temp == 0:
    tim2.deinit()
    led.value(0)
    temp=1