C++ Code to Set HalloWing M4 NeoPixel Colors

user_neopixel.cpp

#if 1 // Change to 1 to enable this code (must enable ONE user*.cpp only!)

#include <Adafruit_NeoPixel.h> // Imports the NeoPixel library

#define LED_PIN    8 // The NeoPixels are on Port 8
#define LED_COUNT  4 // There are 4 NeoPixels on the board

Adafruit_NeoPixel strip(LED_COUNT, LED_PIN, NEO_GRB + NEO_KHZ800);

void user_setup(void) {
  strip.begin();           // INITIALIZE NeoPixel strip object (REQUIRED)
  strip.show();            // Turn OFF all pixels ASAP
  strip.setBrightness(50); // Set BRIGHTNESS to about 1/5 (max = 255)
}

long currentPixelHue = 0;
int purple = 51000;
int orange = 8922;
int prev;
  
void set_colors(void) {
  for(int i=0; i<strip.numPixels(); i++) {
    // Set every other NeoPixel to either purple or orange
    if (prev == orange) {
      prev = purple;
      currentPixelHue = purple;
    } else {
      prev = orange;
      currentPixelHue = orange;
    }

    strip.setPixelColor(i, strip.gamma32(strip.ColorHSV(currentPixelHue))); // Sets individual NeoPixel color
  }
  strip.show(); // Update strip with new colors
}

void user_loop(void) {
  set_colors();
}

#endif // 0