Code to control APA102s with a button press.

BlinkAPA102_mod_Glove_Button.ino

#include "FastLED.h"

// How many leds in your strip?
#define NUM_LEDS 8

// For led chips like Neopixels, which have a data line, ground, and power, you just
// need to define DATA_PIN.  For led chipsets that are SPI based (four wires - data, clock,
// ground, and power), like the LPD8806 define both DATA_PIN and CLOCK_PIN
#define DATA_PIN 3
#define CLOCK_PIN 13
#define button1Pin 2  // pushbutton 1 pin

int button1State; // button state

boolean prev_button1State = false;
boolean current_button1State = false;

int pattern = 0; //pattern to control LEDs (i.e. ON, OFF, sequenced)

// Define the array of leds
CRGB leds[NUM_LEDS];

void setup() {
  // Set up the pushbutton pin to be an input:
  pinMode(button1Pin, INPUT_PULLUP);

  // Uncomment/edit one of the following lines for your leds arrangement.
  // FastLED.addLeds<TM1803, DATA_PIN, RGB>(leds, NUM_LEDS);
  // FastLED.addLeds<TM1804, DATA_PIN, RGB>(leds, NUM_LEDS);
  // FastLED.addLeds<TM1809, DATA_PIN, RGB>(leds, NUM_LEDS);
  // FastLED.addLeds<WS2811, DATA_PIN, RGB>(leds, NUM_LEDS);
  // FastLED.addLeds<WS2812, DATA_PIN, RGB>(leds, NUM_LEDS);
  // FastLED.addLeds<WS2812B, DATA_PIN, RGB>(leds, NUM_LEDS);
  //FastLED.addLeds<NEOPIXEL, DATA_PIN>(leds, NUM_LEDS);
  // FastLED.addLeds<APA104, DATA_PIN, RGB>(leds, NUM_LEDS);
  // FastLED.addLeds<UCS1903, DATA_PIN, RGB>(leds, NUM_LEDS);
  // FastLED.addLeds<UCS1903B, DATA_PIN, RGB>(leds, NUM_LEDS);
  // FastLED.addLeds<GW6205, DATA_PIN, RGB>(leds, NUM_LEDS);
  // FastLED.addLeds<GW6205_400, DATA_PIN, RGB>(leds, NUM_LEDS);

  // FastLED.addLeds<WS2801, RGB>(leds, NUM_LEDS);
  // FastLED.addLeds<SM16716, RGB>(leds, NUM_LEDS);
  // FastLED.addLeds<LPD8806, RGB>(leds, NUM_LEDS);
  // FastLED.addLeds<P9813, RGB>(leds, NUM_LEDS);
  // FastLED.addLeds<APA102, RGB>(leds, NUM_LEDS);
  // FastLED.addLeds<DOTSTAR, RGB>(leds, NUM_LEDS);

  // FastLED.addLeds<WS2801, DATA_PIN, CLOCK_PIN, RGB>(leds, NUM_LEDS);
  // FastLED.addLeds<SM16716, DATA_PIN, CLOCK_PIN, RGB>(leds, NUM_LEDS);
  // FastLED.addLeds<LPD8806, DATA_PIN, CLOCK_PIN, RGB>(leds, NUM_LEDS);
  // FastLED.addLeds<P9813, DATA_PIN, CLOCK_PIN, RGB>(leds, NUM_LEDS);
  FastLED.addLeds<APA102, DATA_PIN, CLOCK_PIN, BGR>(leds, NUM_LEDS);
  // FastLED.addLeds<DOTSTAR, DATA_PIN, CLOCK_PIN, RGB>(leds, NUM_LEDS);

  FastLED.setBrightness(255); //brighteness 0-255
}

void loop() {

  button1State = digitalRead(button1Pin);

  //if button is pressed
  if (button1State == LOW) {
    current_button1State = true; // button has been pressed once

    if (prev_button1State != current_button1State) { //check to see if button is still being pressed

      pattern = pattern + 1;
      if (pattern < 0 || pattern >= 2) { //if out of bounds, start back at 0
        pattern = 0;
      }
    }
    else {
      //do nothing because finger is still on button
    }
    prev_button1State = current_button1State;
  }




  //button has not been pressed, it will be high
  else {
    current_button1State = false;
    prev_button1State = current_button1State;
  }




  switch (pattern) {
    case 1:
      patternOFF();
      break;
    default:
      patternON();
      break;

  }

}//end loop

void patternON() { //all ON
  for (int i = 0; i <= 4; i++) {
    // Turn the LED on, then pause
    leds[i] = CRGB::White;
    FastLED.show();
    delay(5);
  }

}

void patternOFF() { //all off
  for (int i = 0; i <= 4; i++) {
    // Now turn the LED off, then pause
    leds[i] = CRGB::Black;
    FastLED.show();
    delay(5);
  }
}