import time
time.sleep(0.1) 

from machine import Pin, PWM

spwm= PWM(Pin(16))
spwm.freq(50)

cont = 0

while True:
    #spwm.duty_u16(cont)
    #a = cont + 10
    #if cont > 65535:
    #    cont = 0
    spwm.duty_u16(1638) # 65535 = 20 ms
    time.sleep(1)
    spwm.duty_u16(4775) # 65535 = 20 ms
    time.sleep(1)
    spwm.duty_u16(7864) # 65535 = 20 ms
    time.sleep(1)



print("Hello, Pi Pico!")