Configure built-in pwm device on custom GPIO pin to drive LED (Zephyr)

Question

Hello,

I am in the process of following a series of tutorial videos on driving an LED with pwm, but I don't understand how to properly configure my .overlay file and my main.c file to generate pwm signals from a built-in pwm signal generator (e.g. pwm0) on a custom GPIO pin (e.g. P1.02).

my board is an Arduino Nano 33 BLE (Sense) with an nRF52840 ARM Cortex-M4F chip.

here are my current project files even though I know they're buggy (don't worry about preserving what I have though, I just want to know how to do this correctly):

arduino_nano_33_ble.overlay:

/ {
	pwmleds {
		compatible = "pwm-leds";
		fading_led: fading_led {
			    pwms = <&pwm0 0 10000 PWM_POLARITY_NORMAL>;
		};
	};
};
&pinctrl {
	 pwm0_custom: pwm0_custom {
	 	     group1 {
		      	     psels = <NRF_PSEL(PWM_OUT3, 1, 2)>;
			     nordic,invert;
		     };
	 };
};

&pwm0 {
      pinctrl-0 = <&pwm0_custom>;
      /delete-property/ pinctrl-1;
      pinctrl-names = "custom";
};

src/main.c:

#include <zephyr/device.h>
#include <zephyr/drivers/pwm.h>
#include <zephyr/kernel.h>

static const struct pwm_dt_spec green_fade_led = PWM_DT_SPEC_GET(DT_NODELABEL(fading_led));

void main(void) {
  if (!device_is_ready(green_fade_led.dev)) {
    return;
  }

  int ret;
  while (1) {
      ret = pwm_set_pulse_dt(&green_fade_led, 0);
      k_sleep(K_SECONDS(1));
      ret = pwm_set_pulse_dt(&green_fade_led, 10000);
      k_sleep(K_SECONDS(1));

    }
}

prj.conf:

CONFIG_CPP=y
CONFIG_PWM=y
CONFIG_LED=y
CONFIG_LED_PWM=y

Thank you!

-spicysaberist