#include "EEPROM.h" 
#include <SPI.h>
#include <Wire.h>
#include <Adafruit_GFX.h>
#include <Adafruit_SSD1306.h>

#define SCREEN_WIDTH 128
#define SCREEN_HEIGHT 32
 
#define EEPROM_SIZE 1024

#define sw14 16
#define sw15 17
#define sw10 5
#define potpin 34

Adafruit_SSD1306 display(SCREEN_WIDTH, SCREEN_HEIGHT, &Wire);


int potValue = 0;
int address =0;
int ledPot = 0;
int ledPot14 = 0;
int ledPot15 = 0;
int ledPotformat = 0;
const int ledPin = 25;
const int freq = 5000;
const int ledChannel = 0;
const int resolution = 8;
char tempstring[100];
int onetime =1;
void setup() {
   Serial.begin(115200);   
   if (!display.begin(SSD1306_SWITCHCAPVCC, 0x3C)) {
    Serial.println(F("SSD1306 allocation failed"));
  }
   pinMode(sw14,INPUT_PULLUP);
   pinMode(sw15,INPUT_PULLUP);
   pinMode(sw10,INPUT_PULLUP);
   ledcSetup(ledChannel,freq,resolution);
   ledcAttachPin(ledPin,ledChannel);
   if (!EEPROM.begin(EEPROM_SIZE)) {     
    Serial.println("Failed init EEPROM");     
    delay(1000);     
    ESP.restart();   
    }   
    Serial.println("Success init EEPROM");
   display.display();
   delay(2000);
   display.clearDisplay();
   // Test Draw Char
   display.setTextSize(2);
   display.setTextColor(WHITE);
   display.setCursor(0, 0);
   display.println(F("HELLO"));
   display.setCursor(0, 15);
   display.println(F("ESP32"));
   display.display();
   delay(2000);
   

}

void loop() {
  potValue = analogRead(potpin);
 
    display.clearDisplay();
    display.setTextSize(1);
    display.setCursor(0, 0);
    display.display();
    sprintf(tempstring, "EEPROM     ADC: %d",potValue);
    display.print(tempstring);
    display.setCursor(0, 10);
      
    sprintf(tempstring, "Address:   %d (%x)",address,address);
    display.print(tempstring);
    display.setCursor(0, 20);
  
    sprintf(tempstring, "Data: %d",ledPotformat/16);
    display.print(tempstring);
    display.setCursor(0, 30);
    if(digitalRead(sw15)== LOW){
      ledPotformat=ledPot15;
      }
    if(digitalRead(sw14)== LOW){
      ledPotformat=ledPot14;
      }
   
 
    display.display();
  if(digitalRead(sw15)== LOW){
    address = 0;
    Serial.println(EEPROM.readUChar(0));
    ledcWrite(ledChannel,ledPot15);
    
  }
  else if(digitalRead(sw14)== LOW){
    address = 154;
    Serial.println(EEPROM.readUChar(154));
    ledcWrite(ledChannel,ledPot14);
    
  }
  if (digitalRead(sw10) == LOW){
    EEPROM.writeUChar(address,potValue);
    EEPROM.commit();
    ledPot = potValue;
    if(address==154){
      ledPot14 = potValue;
      }
    if(address==0){
      ledPot15 = potValue;
      }
    
    Serial.println(EEPROM.readUChar(address));
  }

}