#frequency must be from 1Hz to 40MHz (1 and 40 000 000)
# duty cycle: 0-1023 (i.e. 0-100%)

from machine import Pin,PWM
from time import sleep

frequency1 = 1
frequency2 = 40000000

led1 = PWM(Pin(23),frequency1)
led2 = PWM(Pin(19),frequency2)

led1.duty(1023)
led2.duty(1023)