#include <SPI.h>
#include <Wire.h>
#include <Adafruit_GFX.h>
#include <Adafruit_SSD1306.h>
#include "EEPROM.h"
#define EEPROM_SIZE 1000
#define screenW 128
#define screenH 64
#define l1 32
#define l2 33
#define l3 25
#define l4 26
#define l5 27
#define l6 14
#define sw1 5
#define sw2 18
char tmp[100];
int secs = 0;
int mode = 1;
int minus = 0;
Adafruit_SSD1306 display(screenW, screenH, &Wire);

const int freq = 5000;
const int ledChannel = 0;
const int resolution = 8;
void setup() {
  // put your setup code here, to run once:
  Serial.begin(115200);
  if (!display.begin(SSD1306_SWITCHCAPVCC, 0x3C)) {
    Serial.println(F("SSD1306 allocation failed"));
  }
  if (!EEPROM.begin(EEPROM_SIZE)) {
    Serial.println("Failed init EEPROM");
    delay(1000);
    ESP.restart();
  }
  Serial.println("Success init EEPROM");

  pinMode(sw1, INPUT_PULLUP);
  pinMode(sw2, INPUT_PULLUP);
  display.display();
  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(500);
  if ((digitalRead(sw1) == LOW) && (digitalRead(sw2) == LOW)) {
    mode = 0;
    pinMode(l1, OUTPUT);
    pinMode(l2, OUTPUT);
    pinMode(l3, OUTPUT);
    pinMode(l4, OUTPUT);
    pinMode(l5, OUTPUT);
    pinMode(l6, OUTPUT);
  } else {
    ledcSetup(ledChannel, freq, resolution);
    ledcAttachPin(l1, ledChannel);
    ledcAttachPin(l2, ledChannel);
    ledcAttachPin(l3, ledChannel);
    ledcAttachPin(l4, ledChannel);
    ledcAttachPin(l5, ledChannel);
    ledcAttachPin(l6, ledChannel);
  }
}
int potvalue = 0;
long last1000 = 0;
long last500 = 0;

bool x = false;
void loop() {
  if (millis() - last1000 >= 1000) {
    last1000 = millis();
    secs++;
    if (secs >= 60) {
      secs = 0;
      minus++;
      if (minus >= 60) {
        minus = 0;
      }
    }
    Serial.printf("Time : %02d:%02d\nadc : %d\n", minus, secs,potvalue);
  }

  if (millis() - last500 >= 500) {
    potvalue = analogRead(35);
    if ((digitalRead(sw1) == LOW) && (digitalRead(sw2) == LOW)) {
      if (mode == 1) {
        pinMode(l1, OUTPUT);
        pinMode(l2, OUTPUT);
        pinMode(l3, OUTPUT);
        pinMode(l4, OUTPUT);
        pinMode(l5, OUTPUT);
        pinMode(l6, OUTPUT);
        mode = 0;
      }
      if (x) {
        digitalWrite(l1, HIGH);
        digitalWrite(l2, HIGH);
        digitalWrite(l3, HIGH);
        digitalWrite(l4, HIGH);
        digitalWrite(l5, HIGH);
        digitalWrite(l6, HIGH);
        EEPROM.writeUInt(0,HIGH);
        EEPROM.commit();
        EEPROM.writeUInt(1,mode);
        EEPROM.commit();
      } else {
        digitalWrite(l1, LOW);
        digitalWrite(l2, LOW);
        digitalWrite(l3, LOW);
        digitalWrite(l4, LOW);
        digitalWrite(l5, LOW);
        digitalWrite(l6, LOW);
        EEPROM.writeUInt(0,LOW);
        EEPROM.commit();
        EEPROM.writeUInt(1,mode);
        EEPROM.commit();
      }
      x=!x;
    } else {
      if (mode == 0) {
        ledcSetup(ledChannel, freq, resolution);
        ledcAttachPin(l1, ledChannel);
        ledcAttachPin(l2, ledChannel);
        ledcAttachPin(l3, ledChannel);
        ledcAttachPin(l4, ledChannel);
        ledcAttachPin(l5, ledChannel);
        ledcAttachPin(l6, ledChannel);
        mode = 1;
      }
      ledcWrite(ledChannel,   potvalue * 255 / 4095);
      EEPROM.writeUInt(0,potvalue * 255 / 4095);
      EEPROM.commit();
      EEPROM.writeUInt(1,mode);
      EEPROM.commit();
    }
    last500 = millis();
    display.clearDisplay();
    display.setTextSize(1);
    display.setCursor(0, 0);
    sprintf(tmp, "Time : %02d:%02d ", minus, secs);
    display.print(tmp);
    display.setCursor(0, 10);
    sprintf(tmp, "ADC : %04d ", potvalue);
    display.print(tmp);
  }
  display.display();
}