Project #11: ESP32 Feather - Push Button - Mk02

// ***** Don Luc Electronics © *****
// Software Version Information
// Project #11: HUZZAH32 ESP32 Feather - Push Button - Mk02
// 08-02
// DL1908Mk02p.ino 11-02
// Adafruit HUZZAH32 ESP32 Feather Board
// SHARP Display
// LED Green
// Push Button

// include Library Code
#include <Adafruit_SharpMem.h>
#include <Adafruit_GFX.h>

// SHARP Memory Display
// any pins can be used
#define SHARP_SCK  13
#define SHARP_MOSI 12
#define SHARP_SS   27
// Set the size of the display here, e.g. 144x168!
Adafruit_SharpMem display(SHARP_SCK, SHARP_MOSI, SHARP_SS, 144, 168);
// The currently-available SHARP Memory Display (144x168 pixels)
// requires > 4K of microcontroller RAM; it WILL NOT WORK on Arduino Uno
// or other <4K "classic" devices!
#define BLACK 0
#define WHITE 1
int minorHalfSize; // 1/2 of lesser of display width or height

// LED Green
int iLEDGreen =  21;                 // LED Green
int stateLEDGreen = LOW;             // stateLEDGreen 

// Button
int iBut1 = 17;                      // Button 1
int ButState1;                       // Variable for reading the button status
int previous = LOW;                  // previous
long lTime = 0;                      // lTime
long debounce = 500;                 // debounce

void loop() {
  
  // Read the state of the button value
  ButState1 = digitalRead(iBut1);
  
  // Check if the button is pressed
  if (ButState1 == HIGH && previous == LOW && millis() - lTime > debounce) 
  {

     if(stateLEDGreen == HIGH)
     {
      
        // stateLEDGreen = LOW
        stateLEDGreen = LOW;
        // SHARP Memory Display Off
        isDisplayOff();
             
     } else 
     {

        // stateLEDGreen = HIGH
        stateLEDGreen = HIGH; 
        // SHARP Memory Display On
        isDisplayOn();
            
    }
    lTime = millis();

  } 

  // iLEDGreen
  digitalWrite(iLEDGreen, stateLEDGreen);
  previous == ButState1;  
 
}