PWM_Basic example fails to blink LED on Pico W about rp2040_pwm HOT 3 CLOSED

HI @badger200

The example is only for general RP2040. While RP2040W is very different, by using LED @ symbolic pin GPIO32, which is controlled only by CYW43 chip

https://github.com/earlephilhower/arduino-pico/blob/master/variants/rpipicow/pins_arduino.h#L8

https://github.com/earlephilhower/arduino-pico/blob/aeb41f3e70628e63ed1cf13f2031cdaf61d65ad0/variants/rpipicow/picow_digital.cpp#L35-L49

Therefore, the PWM can't control the RP2040W LED.

Try to use a different pin and connect LED to it.

from rp2040_pwm.

I did find a reference example from official Raspberry Pi GitHub: https://github.com/raspberrypi/pico-examples/blob/master/pico_w/blink/picow_blink.c

And it works on my Pico W, however I did not try PWM fading.

from rp2040_pwm.

You really don't need that fancy code for RP2040W_BUILTIN_LED

Just use normal code with digitalWrite()

#define RP2040W_BUILTIN_LED       32

void setup() 
{
  pinMode(RP2040W_BUILTIN_LED, OUTPUT);
}

void loop() 
{
  digitalWrite(RP2040W_BUILTIN_LED, HIGH);
  delay(2000);
  digitalWrite(RP2040W_BUILTIN_LED, LOW);
  delay(2000);
}

from rp2040_pwm.