Blink the LED and RGB LED on Vcc-Gnd RP2040 Board

main.cpp

#include <Arduino.h>
#include <hardware/timer.h>
#include <Adafruit_NeoPixel.h>
#include <random>

bool ledVal = LOW;
repeating_timer_t timer;
repeating_timer_t rgbTimer;
Adafruit_NeoPixel rgb(1, 23, NEO_GRB + NEO_KHZ800);
std::default_random_engine gen;
std::uniform_int_distribution<uint32_t> dist(0, 0xFFFFFF);

/**
 * @brief Timer callback to toggle the built-in LED every 500ms and reset the watchdog timer
 */
bool timer_tick(repeating_timer_t *rt)
{
  rp2040.wdt_reset();
  ledVal = !ledVal;
  digitalWrite(LED_BUILTIN, ledVal);
  digitalWrite(6, !ledVal);
  return true;
}

/***
 * @brief Timer callback to update the RGB LED with a random color every 100ms
 */
bool rgb_tick(repeating_timer_t *rt)
{
  rgb.setPixelColor(0, dist(gen));
  rgb.show();
  return true;
}

void setup()
{
  pinMode(LED_BUILTIN, OUTPUT);
  rgb.begin();
  add_repeating_timer_ms(100, timer_tick, nullptr, &timer);
  add_repeating_timer_ms(100, rgb_tick, nullptr, &rgbTimer);
  rp2040.wdt_begin(1000);
}

void loop()
{
  // let the core sleep
  __wfi();
}