// Reminder...
// For M5Stamp C3 -> Arduino IDE -> Tools -> USB CDC On Boot: --> "Disable"
// For M5Stamp C3U -> Arduino IDE -> Tools -> USB CDC On Boot: --> "Enable"
//
// For ESP32C3 SuperMini & M5Stamp C3U (using "ESP32C3 Dev Module" board)
//    -> USB off + Left Button pressed -> USB on + Left button pressed -> Release Left button
//    -> After Upload the code, press Right button (reset) 


// NeoPixel inicializations >>>

#include <Adafruit_NeoPixel.h>


// define Neopixel LEDs

//#define PinRGBled       2  // Internal Pin LED SK6812 for M5Stamp C3
#define PinRGBstrip1      2 //3  // WS2812B Strip 1
#define PinRGBstrip2      3 //   // WS2812B Strip 2
#define PinRGBstrip3      0 //5  // WS2812B Strip 3
#define PinRGBstrip4      1 //6  // WS2812B Strip 4

#define NUMPIXELSstrip1   12
#define NUMPIXELSstrip2   16 // 12
#define NUMPIXELSstrip3   16 // 12
#define NUMPIXELSstrip4   16 // 12

Adafruit_NeoPixel pixelsStrip1 = Adafruit_NeoPixel(NUMPIXELSstrip1, PinRGBstrip1, NEO_GRB + NEO_KHZ800);
Adafruit_NeoPixel pixelsStrip2 = Adafruit_NeoPixel(NUMPIXELSstrip2, PinRGBstrip2, NEO_GRB + NEO_KHZ800);
Adafruit_NeoPixel pixelsStrip3 = Adafruit_NeoPixel(NUMPIXELSstrip3, PinRGBstrip3, NEO_GRB + NEO_KHZ800);
Adafruit_NeoPixel pixelsStrip4 = Adafruit_NeoPixel(NUMPIXELSstrip4, PinRGBstrip4, NEO_GRB + NEO_KHZ800);


// OLED display SSD1306 I2C inicialization >>>

#include <Wire.h>
#include <U8g2lib.h>

#define I2C_SDA 4 //21    //I2C_SDA -> Pin 4 for ESP32C3 -> Pin 21 for ESP32 
#define I2C_SCL 5 //22    //I2C_SCL -> Pin 5 for ESP32C3 -> Pin 22 for ESP32

  // OLED display 0.96 128x64 SSD1306 BiColor 0..14 Yellow 15..63 Blue
    // --> u8g2.setFont(u8g2_font_scrum_tr); //https://github.com/olikraus/u8g2/wiki/fntlist8  fuente muy equilibrada, la _tf tambien
    // --> u8g2.setFont(u8g2_font_bpixeldouble_tr); fuente un poco más BOLD (negrita)

//U8G2_SSD1306_128X32_UNIVISION_F_HW_I2C u8g2(U8G2_R0, /* reset=*/ U8X8_PIN_NONE, /* clock=*/ SCL, /* data=*/ SDA);   // 0.91 Display
//U8G2_SSD1306_128X32_UNIVISION_F_HW_I2C u8g2(U8G2_R0, /* reset=*/ U8X8_PIN_NONE);  //M0/ESP32/ESP8266/mega2560/Uno/Leonardo
U8G2_SSD1306_128X64_NONAME_F_HW_I2C u8g2(U8G2_R0, /* reset=*/ U8X8_PIN_NONE);  // 0.91 Display
//U8G2_SH1106_128X64_NONAME_F_HW_I2C u8g2(U8G2_R0);  // 1.3 Display

#define u8g_logo_width 128
#define u8g_logo_height 64

// Bender logo
static unsigned char u8g_logo_bits[] = {
  0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x3f, 0xfe, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 
	0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x1f, 0xfc, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 
	0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x0f, 0xf8, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 
	0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x0f, 0xf8, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 
	0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x1f, 0xf8, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 
	0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x1f, 0xfc, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 
	0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x3f, 0xfe, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 
	0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x3f, 0xfe, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 
	0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x3f, 0xfe, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 
	0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x3f, 0xfe, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 
	0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x3f, 0xfe, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 
	0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x3f, 0xfe, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 
	0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x3f, 0xfe, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 
	0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x3f, 0xfe, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 
	0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x3f, 0xfe, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 
	0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x07, 0xf0, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 
	0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x01, 0x80, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 
	0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x7f, 0x00, 0x00, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 
	0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x3f, 0x00, 0x00, 0xfe, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 
	0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x1f, 0x00, 0x00, 0xfc, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 
	0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x0f, 0x00, 0x00, 0xf8, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 
	0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x07, 0x00, 0x00, 0xf0, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 
	0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x07, 0x00, 0x00, 0xf0, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 
	0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x07, 0x00, 0x00, 0xf0, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 
	0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x03, 0x00, 0x00, 0xe0, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 
	0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x03, 0x00, 0x00, 0xe0, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 
	0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x03, 0x00, 0x00, 0xe0, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 
	0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x03, 0x00, 0x00, 0xe0, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 
	0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x03, 0x00, 0x00, 0xe0, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 
	0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x03, 0x00, 0x00, 0xe0, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 
	0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x03, 0x00, 0x00, 0xe0, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 
	0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x03, 0x00, 0x00, 0xe0, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 
	0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x01, 0x00, 0x00, 0xc0, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 
	0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 
	0xff, 0xff, 0xff, 0xff, 0xff, 0x7f, 0xfe, 0xff, 0xff, 0x3f, 0xfe, 0xff, 0xff, 0xff, 0xff, 0xff, 
	0xff, 0xff, 0xff, 0xff, 0xff, 0x3f, 0xc7, 0x0f, 0xf8, 0x73, 0xfe, 0xff, 0xff, 0xff, 0xff, 0xff, 
	0xff, 0xff, 0xff, 0xff, 0xff, 0x9f, 0xf1, 0x1f, 0xfc, 0xc7, 0xfc, 0xff, 0xff, 0xff, 0xff, 0xff, 
	0xff, 0xff, 0xff, 0xff, 0xff, 0x9f, 0xf1, 0x3f, 0xfe, 0xc7, 0xfc, 0xff, 0xff, 0xff, 0xff, 0xff, 
	0xff, 0xff, 0xff, 0xff, 0xff, 0x9f, 0xf8, 0x3f, 0xfe, 0x8f, 0xfc, 0xff, 0xff, 0xff, 0xff, 0xff, 
	0xff, 0xff, 0xff, 0xff, 0xff, 0x9f, 0x78, 0x7c, 0x1f, 0x8f, 0xfc, 0xff, 0xff, 0xff, 0xff, 0xff, 
	0xff, 0xff, 0xff, 0xff, 0xff, 0x9f, 0x78, 0x7c, 0x1f, 0x8f, 0xfc, 0xff, 0xff, 0xff, 0xff, 0xff, 
	0xff, 0xff, 0xff, 0xff, 0xff, 0x9f, 0x78, 0x7c, 0x1e, 0x8f, 0xfc, 0xff, 0xff, 0xff, 0xff, 0xff, 
	0xff, 0xff, 0xff, 0xff, 0xff, 0x9f, 0xf8, 0x3f, 0xfe, 0x8f, 0xfc, 0xff, 0xff, 0xff, 0xff, 0xff, 
	0xff, 0xff, 0xff, 0xff, 0xff, 0x9f, 0xf1, 0x3f, 0xfe, 0xc7, 0xfc, 0xff, 0xff, 0xff, 0xff, 0xff, 
	0xff, 0xff, 0xff, 0xff, 0xff, 0xbf, 0xe1, 0x1f, 0xfc, 0xc7, 0xfc, 0xff, 0xff, 0xff, 0xff, 0xff, 
	0xff, 0xff, 0xff, 0xff, 0xff, 0x3f, 0xe7, 0x0f, 0xf8, 0x73, 0xfe, 0xff, 0xff, 0xff, 0xff, 0xff, 
	0xff, 0xff, 0xff, 0xff, 0xff, 0x7f, 0xfe, 0xff, 0xff, 0x3f, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 
	0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x80, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 
	0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x03, 0x00, 0x00, 0xc0, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 
	0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x03, 0x00, 0x00, 0xe0, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 
	0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x03, 0x00, 0x00, 0xe0, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 
	0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x73, 0xce, 0x39, 0xe7, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 
	0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x73, 0xce, 0x39, 0xe7, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 
	0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x73, 0xce, 0x39, 0xe7, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 
	0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x03, 0x00, 0x00, 0xe0, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 
	0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x03, 0x00, 0x00, 0xe0, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 
	0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x63, 0xce, 0x39, 0xe3, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 
	0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x03, 0xce, 0x39, 0xe0, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 
	0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x03, 0xcc, 0x19, 0xe0, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 
	0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x03, 0x00, 0x00, 0xe0, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 
	0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x03, 0x00, 0x00, 0xe0, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 
	0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x03, 0x00, 0x00, 0xe0, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 
	0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x0f, 0x00, 0x00, 0xf8, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 
	0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x01, 0xc0, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff
};


byte ScreenLineNum = 0;     // 3 Lines 0 (default values), 1 (User values), 2 (Bars)
byte ScreenColum = 0;       // 4 Columns 0 (Brightness),1 (Red),2 (Green),3 (Blue)

struct ScreenLineValues
{
  const byte BrightnessVal;
  const byte RedVal;
  const byte GreenVal;
  const byte BlueVal;
};

ScreenLineValues ScreenLine1 = {50, 0, 0, 0};
ScreenLineValues ScreenLine2 = {50, 0, 0, 0};
ScreenLineValues ScreenLine3 = {50, 0, 0, 0};



// >> External Interruptions inicializations

  // define a structure for interruption buttons

struct ButtonISR
{
  const uint8_t PIN;
  byte bttnNumberPressed;   // Not used
  bool pressed;
};

  // define the iterruption buttons values  
ButtonISR bttnUP = {21, 0, false};  // Pin 0
ButtonISR bttnDW = {7, 0, false}; // Pin 21
ButtonISR bttnOK = {20, 0, false};  // Pin 1
ButtonISR bttnLF = {19, 0, false}; // Pin 20
ButtonISR bttnRI = {18, 0, false};  // Pin 2

byte bttnNumberPressed;   // 0=No bttn pressed, 1=UP, 2=DW, 3=LF, 4=RI, 5=OK

volatile unsigned long oldtime_ISRbttn = 0;
bool flaganybttnpressed = false;

#define timePressingButton   5  // Wait 5ms pressing button 



// @@@--- INTERRUPTIONS ---@@@ //


void IRAM_ATTR ISR_UPbttn()
{
  f_detachInterrupt_ISRbttns();
  flaganybttnpressed = true;
  oldtime_ISRbttn = millis();
  
  bttnNumberPressed = 1;
}

void IRAM_ATTR ISR_DWbttn()
{
  f_detachInterrupt_ISRbttns();
  flaganybttnpressed = true;
  oldtime_ISRbttn = millis();

  bttnNumberPressed = 2;
}

void IRAM_ATTR ISR_OKbttn()
{
  f_detachInterrupt_ISRbttns();
  flaganybttnpressed = true;
  oldtime_ISRbttn = millis();

  bttnNumberPressed = 5;
}

void IRAM_ATTR ISR_LFbttn()
{
  f_detachInterrupt_ISRbttns();
  flaganybttnpressed = true;
  oldtime_ISRbttn = millis();

  bttnNumberPressed = 3;
}

void IRAM_ATTR ISR_RIbttn()
{
  f_detachInterrupt_ISRbttns();
  flaganybttnpressed = true;
  oldtime_ISRbttn = millis();

  bttnNumberPressed = 4;
}



// @@@--- SETUP ---@@@ //


void setup()
{
  Serial.begin(115200);

  setupSSD1306();

  setup_Neopixel();

  setup_ISRbttns();
}


  void setupSSD1306()
  {
    Wire.setPins(I2C_SDA, I2C_SCL);
    Wire.begin();
    u8g2.begin();
      
    draw_welcome_display();
  }

    void draw_welcome_display()
    {
      u8g2.firstPage();
      do {

        u8g2.drawXBM( 0, 0, u8g_logo_width, u8g_logo_height, u8g_logo_bits);
      
      } while ( u8g2.nextPage() );

      delay(4000);

      u8g2.firstPage();
      do {
        //keep this the same as it pages through the data generating the screen
        //u8g2.setFont(u8g2_font_t0_18_tr);
        //u8g2.setFont(u8g2_font_balthasar_titling_nbp_tr);
        u8g2.setFont(u8g2_font_scrum_tr);
        u8g2.drawStr(0,14,"ADN electronics");
        //u8g2.setFont(u8g2_font_profont22_tr); //https://github.com/olikraus/u8g2/wiki/fntlist8
        u8g2.setFont(u8g2_font_profont15_tr); //https://github.com/olikraus/u8g2/wiki/fntlist8
        u8g2.drawStr(4,40,"ESP32C3");
        u8g2.drawStr(6,60,"U8g2-SSD1306");
        //u8g2.setFont(u8g2_font_profont15_tr); //https://github.com/olikraus/u8g2/wiki/fntlist8
        //u8g2.drawStr(6,60,"NPDC development");
      } while ( u8g2.nextPage() );

      delay(4000);

      u8g2.clear();
    }
       

  void setup_Neopixel()
  {
    pixelsStrip1.begin(); // Inicializamos la librería Neopixel
    pixelsStrip2.begin(); // Inicializamos la librería Neopixel
    pixelsStrip3.begin(); // Inicializamos la librería Neopixel
    pixelsStrip4.begin(); // Inicializamos la librería Neopixel

    pixelsStrip1.setBrightness(200); // Fijamos un nivel de brillo (0 .. 255) moderado al inicio.
    pixelsStrip2.setBrightness(200); // Fijamos un nivel de brillo (0 .. 255) moderado al inicio.
    pixelsStrip3.setBrightness(200); // Fijamos un nivel de brillo (0 .. 255) moderado al inicio.
    pixelsStrip4.setBrightness(200); // Fijamos un nivel de brillo (0 .. 255) moderado al inicio.

    s_Neopixel_start_sequence1();
    s_Neopixel_start_sequence2();
  }

    void s_Neopixel_start_sequence1()
    {
      for (int i=0; i<4; i++)
      {  
        if (i<1)
        {
          pixelsStrip1.setPixelColor(i, pixelsStrip1.Color(0,0,255));   // Ponemos el LED en color AZUL para comprobar que funciona correctamente
        }
        if (i<2)
        {          
          pixelsStrip2.setPixelColor(i, pixelsStrip2.Color(255,0,0));   // Ponemos el LED en color ROJO para comprobar que funciona correctamente
        }
        if (i<3)
        {          
          pixelsStrip3.setPixelColor(i, pixelsStrip3.Color(0,255,0));   // Ponemos el LED en color VERDE para comprobar que funciona correctamente
        }
        if (i<4)
        {          
          pixelsStrip4.setPixelColor(i, pixelsStrip4.Color(255,255,255));   // Ponemos el LED en color BLANCO para comprobar que funciona correctamente
        }
        pixelsStrip1.show();
        pixelsStrip2.show();
        pixelsStrip3.show();
        pixelsStrip4.show();

        delay(250);
      }

      delay (3000);

      //for (int i=3; i>=0; i--)
      for (int i=0; i<4; i++)
      {  
        if (i<1)
        {
          pixelsStrip1.setPixelColor(i, pixelsStrip1.Color(0,0,0));   // Ponemos el LED en color APAGADO
        }
        if (i<2)
        {          
          pixelsStrip2.setPixelColor(i, pixelsStrip2.Color(0,0,0));   // Ponemos el LED en color APAGADO
        }
        if (i<3)
        {          
          pixelsStrip3.setPixelColor(i, pixelsStrip3.Color(0,0,0));   // Ponemos el LED en color APAGADO
        }
        if (i<4)
        {          
          pixelsStrip4.setPixelColor(i, pixelsStrip4.Color(0,0,0));   // Ponemos el LED en color APAGADO
        }
        pixelsStrip1.show();
        pixelsStrip2.show();
        pixelsStrip3.show();
        pixelsStrip4.show();

        delay(250);
      }

      delay (3000);
    }
    
    void s_Neopixel_start_sequence2()
    {
      for (int i=0; i<16; i++)
      {
        if (i<12)
        {
          pixelsStrip1.setPixelColor(i, pixelsStrip1.Color(0,0,255));
        }
        pixelsStrip2.setPixelColor(i, pixelsStrip2.Color(0,0,255));
        pixelsStrip3.setPixelColor(i, pixelsStrip3.Color(0,0,255));
        pixelsStrip4.setPixelColor(i, pixelsStrip4.Color(0,0,255));           
        pixelsStrip1.show();
        pixelsStrip2.show();
        pixelsStrip3.show();
        pixelsStrip4.show();

        delay(100);
      }

      delay(3000);

      //for (int i=15; i>=0; i--)
      for (int i=0; i<16; i++)
      {
        if (i<12)
        {
          pixelsStrip1.setPixelColor(i, pixelsStrip1.Color(0,0,0));
        }
        pixelsStrip2.setPixelColor(i, pixelsStrip2.Color(0,0,0));
        pixelsStrip3.setPixelColor(i, pixelsStrip3.Color(0,0,0));
        pixelsStrip4.setPixelColor(i, pixelsStrip4.Color(0,0,0));           
        pixelsStrip1.show();
        pixelsStrip2.show();
        pixelsStrip3.show();
        pixelsStrip4.show();
        
        delay(100);
      }

      delay (3000);
    }


  void setup_ISRbttns()
  {
    //pinMode(LED, OUTPUT);
    
    pinMode(bttnUP.PIN, INPUT_PULLUP);   // PULLUP --> Switch Pin to GND  // PULLDOWN --> Switch Pin to 5V or 3V3 
    pinMode(bttnDW.PIN, INPUT_PULLUP);   // PULLUP --> Switch Pin to GND  // PULLDOWN --> Switch Pin to 5V or 3V3
    pinMode(bttnOK.PIN, INPUT_PULLUP);   // PULLUP --> Switch Pin to GND  // PULLDOWN --> Switch Pin to 5V or 3V3
    pinMode(bttnLF.PIN, INPUT_PULLUP);   // PULLUP --> Switch Pin to GND  // PULLDOWN --> Switch Pin to 5V or 3V3
    pinMode(bttnRI.PIN, INPUT_PULLUP);   // PULLUP --> Switch Pin to GND  // PULLDOWN --> Switch Pin to 5V or 3V3

    f_attachInterrupt_ISRbttns();
  }

    void f_attachInterrupt_ISRbttns() // atach all ISRs
    {
      attachInterrupt(digitalPinToInterrupt(bttnUP.PIN), ISR_UPbttn, HIGH);  //LOW, HIGH, CHANGE, FALLING, RISING
      attachInterrupt(digitalPinToInterrupt(bttnDW.PIN), ISR_DWbttn, HIGH);  //LOW, HIGH, CHANGE, FALLING, RISING
      attachInterrupt(digitalPinToInterrupt(bttnOK.PIN), ISR_OKbttn, HIGH);  //LOW, HIGH, CHANGE, FALLING, RISING
      attachInterrupt(digitalPinToInterrupt(bttnLF.PIN), ISR_LFbttn, HIGH);  //LOW, HIGH, CHANGE, FALLING, RISING
      attachInterrupt(digitalPinToInterrupt(bttnRI.PIN), ISR_RIbttn, HIGH);  //LOW, HIGH, CHANGE, FALLING, RISING      
    }

    void f_detachInterrupt_ISRbttns() // detach all ISRs 
    {
      detachInterrupt(digitalPinToInterrupt(bttnUP.PIN));
      detachInterrupt(digitalPinToInterrupt(bttnDW.PIN));
      detachInterrupt(digitalPinToInterrupt(bttnOK.PIN));
      detachInterrupt(digitalPinToInterrupt(bttnLF.PIN));
      detachInterrupt(digitalPinToInterrupt(bttnRI.PIN));      
    }



// @@@--- MAIN PROGRAM ---@@@ //


void loop()
{
  if(flaganybttnpressed == true)
  {
    f_evaluateISRbttn();

    f_updatebttnstatus();
  }

  //f_pixelStrips();
  
}


  void f_evaluateISRbttn()
  {
    if(millis()-oldtime_ISRbttn > timePressingButton)
    {
      if(digitalRead(bttnUP.PIN)==LOW)
      {
        bttnUP.pressed = true;
        bttnNumberPressed = 1;
        flaganybttnpressed = false;
      }

      if(digitalRead(bttnDW.PIN)==LOW)
      {
        bttnDW.pressed = true;
        bttnNumberPressed = 2;
        flaganybttnpressed = false;
      }

      if(digitalRead(bttnOK.PIN)==LOW)
      {
        bttnOK.pressed = true;
        bttnNumberPressed = 5;
        flaganybttnpressed = false;
      }

      if(digitalRead(bttnLF.PIN)==LOW)
      {
        bttnLF.pressed = true;
        bttnNumberPressed = 3;
        flaganybttnpressed = false;
      }

      if(digitalRead(bttnRI.PIN)==LOW)
      {
        bttnRI.pressed = true;
        bttnNumberPressed = 4;
        flaganybttnpressed = false;
      }

      // Restrablecemos los flags de los pulsadores en la función "void f_updatebttnstatus()"
      //bttnUP.pressed = false;
      //bttnDW.pressed = false;
      //bttnOK.pressed = false;
      //bttnLF.pressed = false;
      //bttnRI.pressed = false;

      // Restrablecemos las interrupciones en la función "void f_updatebttnstatus()"
      //f_attachInterrupt_ISRbttns();
    }
  }


  void f_updatebttnstatus()
  {
    if (bttnUP.pressed || bttnDW.pressed || bttnOK.pressed || bttnLF.pressed || bttnRI.pressed)
    {  
      /*
      Serial.printf("UP button pressed: %d", bttnUP.pressed);  Serial.println();
      Serial.printf("DOWN button pressed: %d", bttnDW.pressed);  Serial.println();
      Serial.printf("OK button pressed: %d", bttnOK.pressed);  Serial.println();
      Serial.printf("LEFT button pressed: %d", bttnLF.pressed);  Serial.println();
      Serial.printf("RIGHT button pressed: %d", bttnRI.pressed);  Serial.println();
      Serial.println();
      */

      //ff_setLEDcolor();

      ff_ScreenRefresh();

      // restablecemos los flags de las interrupciones
      bttnUP.pressed = false;
      bttnDW.pressed = false;
      bttnOK.pressed = false;
      bttnLF.pressed = false;
      bttnRI.pressed = false;

      f_attachInterrupt_ISRbttns();
    }
  }

    /*
    void ff_setLEDcolor()
    {
      if (bttnUP.pressed)
      {
        pixelsStrip1.setPixelColor(0, pixelsStrip1.Color(255,0,0));
      }
      if (bttnDW.pressed)
      {
        pixelsStrip2.setPixelColor(0, pixelsStrip2.Color(0,0,255));
      }
      if (bttnOK.pressed)
      {
        pixelsStrip1.setPixelColor(0, pixelsStrip1.Color(0,0,0));
        pixelsStrip2.setPixelColor(0, pixelsStrip2.Color(0,0,0));
        pixelsStrip3.setPixelColor(0, pixelsStrip3.Color(0,0,0));
        pixelsStrip4.setPixelColor(0, pixelsStrip4.Color(0,0,0));
      }
      if (bttnLF.pressed)
      {
        pixelsStrip3.setPixelColor(0, pixelsStrip3.Color(255,0,255));
      }
      if (bttnRI.pressed)
      {
        pixelsStrip4.setPixelColor(0, pixelsStrip4.Color(0,255,0));
      }
      pixelsStrip1.show();
      pixelsStrip2.show();
      pixelsStrip3.show();
      pixelsStrip4.show();
    }
    */


    void ff_ScreenRefresh()
    {
      fff_ScreenNavi();
      fff_ScreenLayout();
      fff_ScreenValues();
    }

      void fff_ScreenNavi()
      {
        switch (bttnNumberPressed)
        {
          case 1:

            break;

          case 2:
              
            break;

          case 3:
            
            break;

          case 4:
            
            break;

          case 5:
            
            break;
        }
      } 

      void fff_ScreenLayout()
      {
        u8g2.firstPage();
        do {
          //u8g2.setFont(u8g2_font_scrum_tr);
          //u8g2.setFont(u8g2_font_6x10_tf);
          u8g2.setFont(u8g2_font_t0_18_tr);
          u8g2.userInterfaceSelectionList("LIGHTING MENU", 3, "Brightness\nColor\nAbout\n");
          
          //u8g2.setFont(u8g2_font_6x10_tf);
          //u8g2.setFontRefHeightAll();   /* this will add some extra space for the text inside the buttons */
          //u8g2.userInterfaceMessage("Title1", "Title2", "Title3", " Ok \n Cancel ");
        } while ( u8g2.nextPage() );

        //u8g2.clear();
      }

      void fff_ScreenValues()
      {

      }



  void f_pixelStrips()
  {
    for (int i=0; i<12; i++)
    {
      pixelsStrip1.setPixelColor(i, pixelsStrip1.Color(0,0,255));    
      pixelsStrip1.show();
    }

    for (int i=0; i<12; i++)
    {
      pixelsStrip2.setPixelColor(i, pixelsStrip2.Color(0,0,255));    
      pixelsStrip2.show();
    }

    for (int i=0; i<12; i++)
    {
      pixelsStrip3.setPixelColor(i, pixelsStrip3.Color(0,0,255));    
      pixelsStrip3.show();
    }

    for (int i=0; i<12; i++)
    {
      pixelsStrip4.setPixelColor(i, pixelsStrip4.Color(0,0,255));    
      pixelsStrip4.show();
    }
  }