#define FASTLED_ALLOW_INTERRUPTS 0                            // Used for ESP8266.
#include "FastLED.h"                                          // FastLED library.
 
#if FASTLED_VERSION < 3001000
#error "Requires FastLED 3.1 or later; check github for latest code."
#endif
 
// Fixed definitions cannot change on the fly.
#define LED_DT 7                                      
#define COLOR_ORDER GRB                                       // It's GRB for WS2812B and GBR for APA102
#define LED_TYPE WS2812B                                       // What kind of strip are you using (APA102, WS2801 or WS2812B)?
#define NUM_LEDS 6                                           // Number of LED's
#define button 3                                           // pin to the button

int mode=0;
 
// Initialize changeable global variables.
uint8_t max_bright = 100;                                     // Overall brightness definition. It can be changed on the fly.
uint8_t gHue = 0; // rotating "base color" used by many of the patterns
 
struct CRGB leds[NUM_LEDS];                                   // Initialize our LED array.
  
void setup() {
 
  Serial.begin(115200);
   LEDS.addLeds<LED_TYPE, LED_DT, COLOR_ORDER>(leds, NUM_LEDS);         // For WS2812B
 
  FastLED.setBrightness(max_bright);
  FastLED.setMaxPowerInVoltsAndMilliamps(5, 1000);              // FastLED power management set at 5V, 500mA
  FastLED.clear();
  FastLED.show();
 //setup buttons
 pinMode(button, INPUT_PULLUP);
 pinMode(LED_BUILTIN, OUTPUT);
  pinMode(2, OUTPUT);
  pinMode(3, OUTPUT);
  pinMode(4, OUTPUT);
  pinMode(5, OUTPUT);
} // setup()
 
//void fadeall() { for(int i = 0; i < NUM_LEDS; i++) { leds[i].nscale8(250); } }

void loop() { 
  static uint8_t hue = 0;
  Serial.print("x");
  // First slide the led in one direction
  for(int i = 0; i < NUM_LEDS; i++) {
    // Set the i'th led to red 
    leds[i] = CRGB(0, 0, 255);
    // Show the leds
    FastLED.show(); 
    // now that we've shown the leds, reset the i'th led to black
     //leds[i] = CRGB::Black;
    //fadeall();
   // Wait a little bit before we loop around and do it again
    delay(150);
    }

  // Now go in the other direction.  
  for(int i = (NUM_LEDS)-1; i >= 0; i--) {
    leds[i] = CRGB::Black;
    delay(10);
  }
{
    //digitalWrite(LED_BUILTIN, HIGH);   // turn the LED on (HIGH is the voltage level)
  //delay(1000);                       // wait for a second
  //digitalWrite(LED_BUILTIN, LOW);    // turn the LED off by making the voltage LOW
  //delay(1000);                       // wait for a second
  digitalWrite(2, HIGH);   // turn the LED on (HIGH is the voltage level)
  delay(500);                       // wait for a second
  digitalWrite(2, LOW);    // turn the LED off by making the voltage LOW
  delay(500);                       // wait for a second
  digitalWrite(3, HIGH);   // turn the LED on (HIGH is the voltage level)
  delay(500);                       // wait for a second
  digitalWrite(3, LOW);    // turn the LED off by making the voltage LOW
  delay(500);                       // wait for a second
  digitalWrite(4, HIGH);   // turn the LED on (HIGH is the voltage level)
  delay(500);                       // wait for a second
  digitalWrite(4, LOW);    // turn the LED off by making the voltage LOW
  delay(500);                       // wait for a second
  digitalWrite(5, HIGH);   // turn the LED on (HIGH is the voltage level)
  delay(500);                       // wait for a second
  digitalWrite(5, LOW);    // turn the LED off by making the voltage LOW
  delay(500);                       // wait for a second
  }
}