#include <Adafruit_NeoPixel.h>
#include <Button.h>

#define LED_PIN     6
#define LED_COUNT   1
#define BUTTON_PIN  2

Adafruit_NeoPixel strip(LED_COUNT, LED_PIN, NEO_GRB + NEO_KHZ800);
Button button(BUTTON_PIN);

int ledBrightness = 100;
float ledFrequency = 1.0;

unsigned long lastPressTime = 0;

void setup() {
  strip.begin();
  strip.show();
  button.begin();
}

void loop() {
  button.read();

  if (button.pressed()) {
    ledFrequency += 0.25;
    if (ledFrequency > 2.0) ledFrequency = 1.0;
  }

  if (button.isPressed()) {
    static uint32_t colors[] = {strip.Color(255, 128, 0), strip.Color(0, 128, 128), strip.Color(128, 0, 128)};
    static int colorIndex = 0;
    strip.setPixelColor(0, colors[colorIndex]);
    strip.show();
    colorIndex = (colorIndex + 1) % (sizeof(colors) / sizeof(colors[0]));
  }

  if (button.pressed() && millis() - lastPressTime >= 1000) {
    lastPressTime = millis();
  }

  int delayTime = 1000 / (2 * ledFrequency);

  strip.setPixelColor(0, strip.Color(ledBrightness, ledBrightness, ledBrightness));
  strip.show();
  delay(delayTime);

  strip.setPixelColor(0, strip.Color(0, 0, 0));
  strip.show();
  delay(delayTime);
}