#include <Wire.h>
#include <Adafruit_SSD1306.h>
#include <Adafruit_GFX.h>


#define Ancho 128     // OLED display width, in pixels
#define Alto 64       // OLED display height, in pixels
#define OLED_RESET 4  // Reset pin # (or -1 if sharing Arduino reset pin)
#define ADDRESS 0x3C  ///< See datasheet for Address; 0x3D for 128x64, 0x3C for 128x32
Adafruit_SSD1306 Oled(Ancho, Alto, &Wire, OLED_RESET);

// 'bateria', 50x30px
const unsigned char Bit_bateria [] PROGMEM = {
	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x7f, 0x80, 0x00, 0xff, 0x80, 0x00, 0x00, 0x40, 
	0x80, 0x00, 0xc1, 0x80, 0x00, 0x01, 0xff, 0xc0, 0x01, 0xff, 0xc0, 0x00, 0x01, 0x80, 0x60, 0x03, 
	0x00, 0xc0, 0x00, 0x7f, 0xf0, 0x3f, 0xff, 0xf0, 0x7f, 0x00, 0x40, 0x00, 0x00, 0x00, 0x00, 0x01, 
	0x00, 0x7f, 0xff, 0xff, 0xff, 0xff, 0xff, 0x00, 0x30, 0x00, 0x00, 0x00, 0x00, 0x06, 0x00, 0x30, 
	0x80, 0x00, 0x03, 0x00, 0x06, 0x00, 0x31, 0xe0, 0x00, 0x0e, 0x01, 0xc6, 0x00, 0x30, 0x00, 0x00, 
	0x3c, 0x00, 0x06, 0x00, 0x30, 0x00, 0x01, 0xf8, 0x00, 0x06, 0x00, 0x30, 0x00, 0x06, 0x30, 0x00, 
	0x06, 0x00, 0x30, 0x00, 0x18, 0x3f, 0x00, 0x06, 0x00, 0x30, 0x00, 0x7e, 0x1c, 0x00, 0x06, 0x00, 
	0x30, 0x00, 0x0e, 0xe0, 0x00, 0x06, 0x00, 0x30, 0x00, 0x1f, 0x80, 0x00, 0x06, 0x00, 0x30, 0x00, 
	0x3c, 0x00, 0x00, 0x06, 0x00, 0x30, 0x00, 0x60, 0x00, 0x00, 0x06, 0x00, 0x30, 0x00, 0x00, 0x00, 
	0x00, 0x06, 0x00, 0x7f, 0xff, 0xff, 0xff, 0xff, 0xfe, 0x00, 0x60, 0x00, 0x00, 0x00, 0x00, 0x01, 
	0x00, 0x60, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x3f, 0xff, 0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 
	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 
	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 
	0x00, 0x00
};

// 'panelBMP', 29x32px
const unsigned char Bit_panelBMP [] PROGMEM = {
	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x1f, 0xff, 0xff, 0xc0, 0x10, 0x30, 0x60, 0x40, 
	0x10, 0x30, 0x60, 0x40, 0x10, 0x30, 0x60, 0x40, 0x1f, 0xff, 0xff, 0xc0, 0x10, 0x20, 0x60, 0x60, 
	0x10, 0x20, 0x60, 0x20, 0x10, 0x20, 0x60, 0x20, 0x10, 0x20, 0x60, 0x20, 0x1f, 0xff, 0xff, 0xe0, 
	0x3f, 0xff, 0xff, 0xf0, 0x20, 0x20, 0x30, 0x10, 0x20, 0x20, 0x30, 0x10, 0x20, 0x20, 0x30, 0x10, 
	0x7f, 0xff, 0xff, 0xf8, 0x7f, 0xff, 0xff, 0xf8, 0x7f, 0xff, 0xff, 0xf8, 0x00, 0x0f, 0x80, 0x00, 
	0x00, 0x0f, 0x80, 0x00, 0x00, 0x0f, 0x80, 0x00, 0x00, 0x0f, 0x80, 0x00, 0x00, 0x0f, 0xc0, 0x00, 
	0x00, 0x3f, 0xf0, 0x00, 0x00, 0x7f, 0xf8, 0x00, 0x01, 0xc0, 0x18, 0x00, 0x01, 0x80, 0x0c, 0x00, 
	0x01, 0x80, 0x0c, 0x00, 0x01, 0xff, 0xfc, 0x00, 0x01, 0xff, 0xfc, 0x00, 0x00, 0x00, 0x00, 0x00
};

// 'focoBMP', 26x36px
const unsigned char Bit_focoBMP [] PROGMEM = {
	0x00, 0x00, 0x00, 0x00, 0x00, 0x0e, 0x00, 0x00, 0x00, 0xff, 0xc0, 0x00, 0x07, 0x00, 0x18, 0x00, 
	0x0c, 0x00, 0x0c, 0x00, 0x08, 0x00, 0x06, 0x00, 0x10, 0x00, 0x03, 0x00, 0x30, 0x00, 0x01, 0x80, 
	0x60, 0x00, 0x01, 0x80, 0x40, 0x20, 0x00, 0x80, 0x40, 0x00, 0x00, 0x80, 0x40, 0x0a, 0x20, 0x80, 
	0x41, 0xff, 0x90, 0x80, 0x41, 0x22, 0x80, 0x80, 0x61, 0x80, 0x20, 0x80, 0x20, 0x00, 0x41, 0x80, 
	0x30, 0x40, 0x81, 0x80, 0x10, 0x09, 0x02, 0x00, 0x08, 0x21, 0x06, 0x00, 0x08, 0x0a, 0x0c, 0x00, 
	0x04, 0x04, 0x0c, 0x00, 0x06, 0x09, 0x18, 0x00, 0x06, 0x1b, 0x10, 0x00, 0x02, 0x09, 0x10, 0x00, 
	0x00, 0x09, 0x00, 0x00, 0x00, 0x09, 0x10, 0x00, 0x01, 0xff, 0xe0, 0x00, 0x01, 0xff, 0xe0, 0x00, 
	0x01, 0xc0, 0xe0, 0x00, 0x01, 0x8e, 0x60, 0x00, 0x01, 0x81, 0xe0, 0x00, 0x01, 0xb8, 0x60, 0x00, 
	0x01, 0x8e, 0x60, 0x00, 0x00, 0xff, 0xc0, 0x00, 0x00, 0x23, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00
};

// Botones
const int but_izq = 11;
const int but_ok = 10;
const int but_der = 9;
const int Led = 13;
const int Venti = 3;

// Variables 
float Vpanel = 0.0;
float Vbat = 0.0;
float Vcor = 0.0;
float Temp = 0.0;
float Pot = 0.0;
int Util = 200;
float Porutil = 0.0;
int cnt_oled = 0 ;
int bitmenu = 0;


void setup() {
  // put your setup code here, to run once:
  Serial.begin(9600);
  Wire.begin();
  // SSD1306_SWITCHCAPVCC = generate display voltage from 3.3V internally
  if (!Oled.begin(SSD1306_SWITCHCAPVCC, ADDRESS)) {
    Serial.println("SSD1306 failed");
  }
  // Show initial display buffer contents on the screen --
  // the library initializes this with an Adafruit splash screen.
  Oled.setTextColor(WHITE);
  //Oled.display();
  //delay(1000);  // Pause for 1 seconds
  Oled.clearDisplay();
  Oled.setCursor(0,16);
  Oled.setTextSize(2);
  Oled.print(" INICIANDO ");
  Oled.setCursor(0,32);
  Oled.print("  SISTEMA  ");
  Oled.display();
  delay(500);  // Pause for 1 seconds
  Oled.clearDisplay();

  pinMode(Led, OUTPUT);
  digitalWrite(Led, LOW);
  pinMode(Venti, OUTPUT);
  digitalWrite(Venti, HIGH);

  pinMode(but_ok, INPUT_PULLUP);   //declara un pin como entrada y activa la resistencia pullup interna para ese pin
  pinMode(but_izq, INPUT_PULLUP);  //declara un pin como entrada y activa la resistencia pullup interna para ese pin
  pinMode(but_der, INPUT_PULLUP);  //declara un pin como entrada y activa la resistencia pullup interna para ese pin
  

}

void loop() {
  // put your main code here, to run repeatedly:
  digitalWrite(Led, !digitalRead(Led));
  Botones();
  Vpanel = 22.325*LeerADC(A0)*1.1/1023;
  Vbat = 13.393*LeerADC(A2)*1.1/1023;
  Vcor = LeerADC(A1)*4.3327;
  Vcor = map(Vcor,0,5000,0,10000);
  Vcor = (Vcor-5000)/1000;
  Temp = LeerADC(A3)/4.65;
  
  
  //Temp = 135.5;
  Pot = Vbat*Vcor;
  Porutil = 0.01*map(Util,0,255,0,10000);

  cnt_oled++;
  if(cnt_oled>=5){
    cnt_oled=0;
    Menu();
  }
  delay(200);
}

void Botones(){
  if(digitalRead(but_izq)==false){
    delay(100);
    if(digitalRead(but_izq)==false){
      bitmenu--;
      if(bitmenu<0){
        bitmenu = 6;
      }
      Menu ();
      delay(100);
    }
  }
  else if(digitalRead(but_ok)==false){
    delay(100);
      if(digitalRead(but_ok)==false){
      bitmenu = 0;
      Menu ();
      delay(100);    
    }
  }
  else if(digitalRead(but_der)==false){
    delay(100);
    if(digitalRead(but_der)==false){
       bitmenu++;
      if(bitmenu>6){
        bitmenu = 0;
      }
      Menu ();
      delay(100);
    }
  }
}

void Menu (){
  Oled.clearDisplay();
    if(Temp>80){
        digitalWrite(Venti, LOW);
        Oled.setTextSize(1);
        Oled.setCursor(55,56);
        Oled.write(126);
        Oled.write(126);
        Oled.write(126);
      }
      else if(Temp<60){
        digitalWrite(Venti, HIGH);
      }
  switch(bitmenu){
    case 0:
      if(Vpanel>14){
        Oled.drawBitmap(0,20,Bit_panelBMP,29,32,WHITE);
      }
      if(Vbat>8){
        Oled.drawBitmap(40,16,Bit_bateria,50,30,WHITE);
      }
      if(Vbat>11.5){
        Oled.drawBitmap(100,16,Bit_focoBMP,26,36,WHITE);
      }
      
      Oled.setCursor(0,5);
      Oled.setTextSize(1);
      Oled.print(Vpanel,2);
      Oled.print("V");
      Oled.setCursor(45,44);
      Oled.print(Vbat,2);
      Oled.print(" V");
      Oled.setCursor(0,56);
      Oled.print(Vcor,2);
      Oled.print("A");
      Oled.setCursor(88,5);
      Oled.print(Temp,1);
      Oled.write(167);
      Oled.setCursor(90,56);
      Oled.print(Pot,2);
      Oled.print("W");
      Oled.setCursor(48,0);
      Oled.print(Porutil,1);
      Oled.print("%");
      Oled.setCursor(20,56);
      Oled.print("Bulk");
      Oled.display();
    break;
    case 1:
      
      Oled.setCursor(32,0);
      Oled.setTextSize(2);
      Oled.print("Panel");
      Oled.setCursor(24,32);
      Oled.print(Vpanel,2);
      Oled.print(" V");
      Oled.display();
    break;
    case 2:
      
      Oled.setCursor(24,0);
      Oled.setTextSize(2);
      Oled.print("Bateria");
      Oled.setCursor(24,32);
      Oled.print(Vbat,2);
      Oled.print(" V");
      Oled.display();
    break;
    case 3:
      
      Oled.setCursor(10,0);
      Oled.setTextSize(2);
      Oled.print("Corriente");
      Oled.setCursor(28,32);
      Oled.print(Vcor,2);
      Oled.print(" A");
      Oled.display();
    break;
    case 4:
      
      Oled.setCursor(0,0);
      Oled.setTextSize(2);
      Oled.print(" Potencia");
      Oled.setCursor(20,32);
      Oled.print(Pot,2);
      Oled.print(" W");
      Oled.display();
    break;
    case 5:
      
      Oled.setCursor(35,0);
      Oled.setTextSize(2);
      Oled.print("Temp");
      Oled.setCursor(16,32);
      Oled.print(Temp,2);
      Oled.write(167);
      Oled.print("C");
      Oled.display();
    break;
    case 6:
      
      Oled.setCursor(35,0);
      Oled.setTextSize(2);
      Oled.print("Util");
      Oled.setCursor(16,32);
      Oled.print(Porutil,2);
      Oled.print(" %");
      Oled.display();
    break;
  }

}

float LeerADC(int pin) {
  float Vol = 0;
  int sensor = 0;
  for (int i = 0;i <=49;i++) { 
    sensor = analogRead(pin);
    Vol = Vol + sensor;
    delayMicroseconds(15);
  }
  //Serial.println("Fin Lectura");
  return Vol/50;
}