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

#define SCREEN_WIDTH 128
#define SCREEN_HEIGHT 64
#define POT 34

Adafruit_SSD1306 display(SCREEN_WIDTH, SCREEN_HEIGHT, &Wire);

long lasttime1sec = 0;
long lasttime500ms = 0;
int sectime = 0;
int mintime = 0;
char tempstring[100];
bool toogle = true;
bool modeclock = true;

const int freq = 5000;
const int ledChanel = 0;
const int resolution = 8;

#define EEPROM_SIZE 100
#define Sw14 16
#define Sw15 17
#define Sw10 5

const int ledPin = 25;
int i = 0;
int Value = 0;
int fi = 0;
int fiValue = 0;
int indexs = 0;
int potValue = 0;

char charBuffer[100];
int var0, var1, var2, var3;
void setup() {
  Serial.begin(115200);

  pinMode(Sw14, INPUT);
  pinMode(Sw15, INPUT);
  pinMode(Sw10, INPUT);

  ledcSetup(ledChanel, freq, resolution);
  ledcAttachPin(ledPin, ledChanel);

  if (!display.begin(SSD1306_SWITCHCAPVCC, 0x3C)) {
    Serial.println(F("SSD1306 allocation failed"));
  }

  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);

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

  Serial.println("Success init EEPROM");
  var0 = EEPROM.readUChar(0);
  var1 = EEPROM.readUChar(1);
  ledcWrite(ledChanel, var0);
  sprintf(charBuffer, "EEPROM Data>>> var0 %03d | var1 %03d | var2 %03d | var3 %03d\n", var0, var1, var2, var3);
  Serial.println(charBuffer);
  Serial.println("Read EEPROM Complete");
}
void loop() {
  if (digitalRead(Sw15) == HIGH) {
    indexs = 0 ;
  }
  else if (digitalRead(Sw14) == HIGH) {
    indexs = 48 ;
  }
  if (digitalRead(Sw10) == HIGH) {
    EEPROM.writeUChar(indexs,  fiValue );
    EEPROM.commit();

  }
  potValue = analogRead(POT);
  fiValue = (potValue* 255) / 4095;
  int d = EEPROM.readUChar(indexs);
  ledcWrite(ledChanel, d);
  if (millis() - lasttime500ms >= 500) {
    lasttime500ms = millis();

    display.clearDisplay();
    display.setTextSize(1);
    display.setCursor(0, 0);



    if (toogle == true) {
      sprintf(tempstring, "EEPROM    ADC%04d", potValue);
      display.print(tempstring);
      display.setCursor(0, 20);
      sprintf(tempstring, "Address: %04d", indexs);
      display.print(tempstring);
      display.setCursor(0, 30);
      sprintf(tempstring, "Data: %04d ", d);
      display.print(tempstring);
      display.display();
    } else {
      sprintf(tempstring, "EEPROM    ADC%04d", potValue);
      display.print(tempstring);
      display.setCursor(0, 20);
      sprintf(tempstring, "Address: %04d", indexs);
      display.print(tempstring);
      display.setCursor(0, 30);
      sprintf(tempstring, "Data: %04d ", d);
      display.print(tempstring);
      display.display();
    }
    toogle = !toogle;
  }

}