from machine import Timer, PWM, Pin

pwm = PWM(Pin(23), freq=50)
push_1 = Pin(12,Pin.IN,Pin.PULL_UP)
push_2 = Pin(14,Pin.IN,Pin.PULL_UP)

def boton_1 (x):
    global direccion
    direccion = not direccion


def boton_2 (y):
    global t0, n
    if n == 200:
        n = 10
    else:
        n = 200

    t0.init(period=n, mode=Timer.PERIODIC, callback = tim)

def tim (z):
    global n, servo, direccion
    pwm.duty(servo)
    if direccion:
        servo = servo + 1
        if servo > 125:
            direccion = 0
    
    else:
        servo = servo - 1
        if servo < 25:
            direccion = 1

    t0.init(period=n, mode=Timer.PERIODIC, callback = tim)

n = 200
direccion = 1
servo = 25
t0 = Timer(0)
t0.init(period=200, mode=Timer.PERIODIC, callback = tim)
push_1.irq(trigger=Pin.IRQ_FALLING, handler=boton_1)
push_2.irq(trigger=Pin.IRQ_FALLING, handler=boton_2)

while (1):
    pass