MicroPython v1.19 on 2022-06-23; linux [GCC 9.4.0] on Raspberry pi 4b Code #2

[FlydGitHub]

import time
from machine import Pin, PWM

Define the maximum achievable PWM frequency in Hz

pwm_freq = 100000

Define the duty cycle (0-1023)

duty_cycle = 512

Define the GPIO pin for the PWM output in BOARD mode

pwm_pin = 40

Configure the PWM output with the specified frequency and duty cycle

pwm = PWM(Pin(pwm_pin))
pwm.freq(pwm_freq)
pwm.duty(duty_cycle)

Wait indefinitely

try:
while True:
time.sleep(1)
except KeyboardInterrupt:
pass

[peterhinch]

The Unix port of MicroPython doesn't support pin I/O. If you want to run this kind of code you could use a Pico or Pico W.

[FlydGitHub]

Thanks Peter,

My plan was to use the RP 4B OS as a development environment for the Pico.

[peterhinch]

That should be fine, but I/O code will have to run on the Pico. The Unix build typically runs on PC's that don't support pin I/O.