//Termometer y clock

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

#define SCREEN_WIDTH 128 // OLED display width, in pixels
#define SCREEN_HEIGHT 64 // OLED display height, in pixels

// Declaration for an SSD1306 display connected to I2C (SDA, SCL pins)
#define OLED_RESET     4 // Reset pin # (or -1 if sharing Arduino reset pin)
Adafruit_SSD1306 display(SCREEN_WIDTH, SCREEN_HEIGHT, &Wire, OLED_RESET);

int tempRead;
float temp, temp_F;
int tiempo = 1234;
int seg = 0;
int mins = 0;
int hours = 0;
unsigned long prevmillis;
String unit;
String leido = "05:58,C";

void setup() {

  Serial.begin(9600);
  // SSD1306_SWITCHCAPVCC = generate display voltage from 3.3V internally
  if(!display.begin(SSD1306_SWITCHCAPVCC, 0x3D)) { // Address 0x3D for 128x64
    Serial.println(F("SSD1306 allocation failed"));
    for(;;); // Don't proceed, loop forever
  }
  unit = leido.substring(6, 7);
    Serial.println(unit);
    hours = leido.toInt();
    Serial.println(hours);
    leido.remove(0, 3);
    mins = leido.toInt();
    Serial.println(mins);

}

void loop() {

  tempRead = analogRead(A0);
  temp = tempRead * 30 / 1023.0; //Mapear valores leidos de 0 a 15
  temp_F = (temp * 1.8) + 32;
  //Serial.println(temp);

  display.display();
  display.clearDisplay();
  display.setTextSize(2);
  display.setTextColor(WHITE);

  
  if (unit == "C")
  {
    //Mostrar °C
    display.setCursor(25, 36);
    display.println(temp, 2);
    display.drawChar(92, 36, 0xF7, WHITE, BLACK, 1);
    display.setCursor(100, 36);
    display.println("C");
  }
  
  else if (unit == "F")
  {
    //Mostrar °F
    display.setCursor(25,36);
    display.println(temp_F, 2);
    display.drawChar(92, 36, 0xF7, WHITE, BLACK, 1);
    display.setCursor(100, 36);
    display.println("F");
  }

  if (millis() - prevmillis >= 1000)
  {
    prevmillis = millis();
    seg++;
    if (seg == 60) {seg = 0; mins++;}
    if (mins == 60) {mins = 0; hours++;}
    if (hours == 24) {hours = 0;}
  }

  display.setTextSize(2);
  display.setCursor(15,10);
  if (hours < 10) display.print("0");
  display.println(hours);
  display.setCursor(36,10);
  display.print(":");
  display.setCursor(45,10);
  if (mins < 10) display.print("0");
  display.println(mins);
  display.setCursor(66,10);
  display.print(":");
  display.setCursor(75,10);
  if (seg < 10) display.print("0");
  display.println(seg);
  /*display.setCursor(100,10);
  display.println("AM");*/


}


/*//Termometer y clock v1.0
#include <SoftwareSerial.h>
SoftwareSerial BT(6, 7); //RX, TX

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

#define SCREEN_WIDTH 128 // OLED display width, in pixels
#define SCREEN_HEIGHT 64 // OLED display height, in pixels

// Declaration for SSD1306 display connected using software SPI (default case):
#define OLED_MOSI   9
#define OLED_CLK   10
#define OLED_DC    11
#define OLED_CS    12
#define OLED_RESET 13
Adafruit_SSD1306 display(SCREEN_WIDTH, SCREEN_HEIGHT,
  OLED_MOSI, OLED_CLK, OLED_DC, OLED_RESET, OLED_CS);
  

int read;
int hours = 0;
int mins = 0;
int seg = 0;
float temp, temp_F, mV;
String leido;
String unit;
unsigned long prevmillis;

void setup() {

 Serial.begin(9600);  
  // SSD1306_SWITCHCAPVCC = generate display voltage from 3.3V internally
  if(!display.begin(SSD1306_SWITCHCAPVCC)) 
  {
    Serial.println(F("SSD1306 allocation failed"));
    for(;;); // Don't proceed, loop forever
  }
  BT.begin(9600);
  display.display();
  display.clearDisplay();
}

void loop() {

  read = analogRead(A0);
  mV = read * 5000.0 / 1023;
  temp = mV / 10;
  temp_F = (temp * 1.8) + 32;

  display.display();
  display.setTextSize(2);
  display.setTextColor(WHITE);

  if (BT.available())
  {
    leido = BT.readString();
    unit = leido.substring(6, 7);
    hours = leido.toInt();
    leido.remove(0, 3);
    mins = leido.toInt();
  }
  
  if (millis() - prevmillis >= 1000)
  {
  prevmillis = millis();
  display.clearDisplay();
  //Clock    
   seg++;
   if (seg == 60) {seg = 0; mins++;}
   if (mins == 60) {mins = 0; hours++;}
   if (hours == 24) {hours = 0;}

  if (unit == "C")
    {
    //Mostrar °C
    display.setCursor(25, 36);
    display.println(temp, 2);
    display.drawChar(92, 36, 0xF7, WHITE, BLACK, 1);
    display.setCursor(100, 36);
    display.println("C");
    }
  else if (unit == "F")
    {
    //Mostrar °F
    display.setCursor(25,36);
    display.println(temp_F, 2);
    display.drawChar(92, 36, 0xF7, WHITE, BLACK, 1);
    display.setCursor(100, 36);
    display.println("F");
    }
  }
  //Mostrar Clock
  display.setTextSize(2);
  //Horas
  display.setCursor(15,10);
  if (hours < 10) display.print("0");
  display.println(hours);
  display.setCursor(36,10);
  display.print(":");
  //Minutos
  display.setCursor(45,10);
  if (mins < 10) display.print("0");
  display.println(mins);
  display.setCursor(66,10);
  display.print(":");
  //Segundos
  display.setCursor(75,10);
  if (seg < 10) display.print("0");
  display.println(seg);
}*/