#include <SPI.h>
#include<Wire.h>
#include<Adafruit_GFX.h>
#include<Adafruit_SSD1306.h>
#include"EEPROM.h"
#define EEPROM_SIZE 1000

#define SW1 5
#define SW2 17
#define SW3 16
#define LED 25
#define POT 34
#define OnboardLED 2
#define IDNisit 901

#define SCREEN_WIDTH 128
#define SCREEN_HEIGHT 32

Adafruit_SSD1306 display (SCREEN_WIDTH, SCREEN_HEIGHT,&Wire);

long lasttime1sec =0;
long lasttime500ms =0;
char tempstring[100];
bool toogle = true;
const int ledPin = 25;
const int freq = 5000;
const int ledChannel = 0;
const int resolution = 8;
int adcvalue = 0;
int adcRT = 0;
int mode =0;
int d1;
int address;


char charBuffer[100];
int var0;



void setup() {
  Serial.begin(115200);
  if(!display.begin(SSD1306_SWITCHCAPVCC,0x3c)){
    Serial.println(F("SSD1306 allocation failed"));
  }

  if(!EEPROM.begin(EEPROM_SIZE)){
    Serial.println("Failed EEPROM");
    delay(1000);
    ESP.restart();
  }
  Serial.println("Sucess EEPROM");
 


Serial.println("Write EEPROM Complete");

  pinMode(SW1, INPUT_PULLUP);
  pinMode(SW2, INPUT_PULLUP);
  pinMode(SW3, INPUT_PULLUP);
  pinMode(OnboardLED, OUTPUT);

  delay(2000);
  display.clearDisplay();
  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);

  ledcSetup(ledChannel,freq,resolution);

  ledcAttachPin(ledPin,ledChannel );
  

}

void loop() {
  adcvalue = analogRead(POT);
  adcRT = (adcvalue * 255/4095);

  if((digitalRead(17) == HIGH)){ //SW2
    address = 000;
    
    if(digitalRead(5) == HIGH){
      EEPROM.writeUChar(address,adcRT);
      EEPROM.commit();
    }
  }
  
  if((digitalRead(16) == HIGH)){//SW3
    address = 901;
    if(digitalRead(5) == HIGH){
      EEPROM.writeUChar(address,adcRT);
      EEPROM.commit();
    }
    
  }
   
  d1 = EEPROM.readUChar(address);
  
  ledcWrite(ledChannel, d1);  

  if(millis() - lasttime1sec >= 1000){
    lasttime1sec = millis();

    display.clearDisplay();
    display.setTextSize(1);
    display.setCursor(0,0);
    sprintf(tempstring,"EEPROM  ADC:%d",adcvalue);
    display.print(tempstring);
    display.setCursor(0,10);
    sprintf(tempstring,"Address:0%03d  (0x%s)",address,String(address,HEX));
    display.print(tempstring);
    display.setCursor(0,20);
    sprintf(tempstring,"Data:0%03d ",d1 );
    display.print(tempstring);
    Serial.println(tempstring);
    display.display();
  }

  if(millis() - lasttime500ms >= 500){
     lasttime500ms  = millis();
     digitalWrite(OnboardLED,toogle);
     toogle =!toogle;
  }

}