#include "HX711.h"
#include <HX711_ADC.h>
#include <Wire.h>
#include <LiquidCrystal_I2C.h>
#include <EEPROM.h>
#include "Ubidots.h"   //Incluir librería Ubidots
#define EEPROM_SIZE 12

const char* UBIDOTS_TOKEN = "BBFF-Em2zlmR8XKaMMUYcdiQmnTbkSYkJlP" ; //TOKEN de Ubidots
const char* WIFI_SSID = "" ;   //SSID Wi-Fi
const char* WIFI_PASS = "" ;   //Contraseña de Wi-Fi
Ubidots ubidots(UBIDOTS_TOKEN, UBI_HTTP);

const int LOADCELL_DOUT_PIN = 19;
const int LOADCELL_SCK_PIN = 18;
const int calVal_eepromAdress = 0;
long t;
int lcdColumns = 16;
int lcdRows = 2;


//HX711 balanza;
LiquidCrystal_I2C lcd(0x27, lcdColumns, lcdRows);  
HX711_ADC LoadCell(LOADCELL_DOUT_PIN, LOADCELL_SCK_PIN);


//WiFiClient client;


void setup() {
  Serial.begin(115200);
  lcd.init();                  
  lcd.backlight();

  if (!lcd.begin(SSD1306_SWITCHCAPVCC, 0x3C)) { // Address 0x3D for 128x64
    Serial.println(F("SSD1306 allocation failed"));
    for (;;); // Don't proceed, loop forever
  }

  ubidots.wifiConnect(WIFI_SSID, WIFI_PASS);
  ubidots.setDebug(true); // Descomenta esta línea para imprimir mensajes de depuración
  
  LoadCell.begin();
  float calibrationValue;// calibration value (see example file "Calibration.ino")
  
#if defined(ESP8266)|| defined(ESP32)
  EEPROM.begin(EEPROM_SIZE);      // uncomment this if you use ESP8266/ESP32 and want to fetch the calibration value from eeprom
#endif
  EEPROM.write(calVal_eepromAdress, calibrationValue); // uncomment this if you want to fetch the calibration value from eeprom
  long stabilizingtime = 2000; // preciscion right after power-up can be improved by adding a few seconds of stabilizing time
  boolean _tare = true; //set this to false if you don't want tare to be performed in the next step
  LoadCell.start(stabilizingtime, _tare);
  
  if (LoadCell.getTareTimeoutFlag()) {
    Serial.println("Timeout, check MCU>HX711 wiring and pin designations");
    while (1);
  }
  else {
    LoadCell.setCalFactor(420); // set calibration value (float)
    Serial.println("Startup is complete");
  }
}

void loop() {
  static boolean newDataReady = 0;
  const int serialPrintInterval = 0; //increase value to slow down serial print activity
  // check for new data/start next conversion:
  if (LoadCell.update()) newDataReady = true;
  // get smoothed value from the dataset:
  if (newDataReady) {
    if (millis() > t + serialPrintInterval) {
      float i = LoadCell.getData();
      Serial.print("Load_cell output val: ");
      Serial.println(i);
      float w = 0.1; //peso de una sola pieza
      lcd.clear(); //display.clearDisplay();
      lcd.setCursor(1, 0);  //display.setCursor(5, 0);
      lcd.print("TOTAL: ");  //display.print("TOTAL WEIGHT ");
      lcd.setCursor(8, 0);   //display.setCursor(10, 15);
      lcd.print(i);    //display.print(i);
      lcd.print(" kg");  //display.print("gm");
      lcd.display();

      int k = i / w;
      lcd.setCursor(1, 1);   //display.setCursor(0, 30);
      lcd.print("PIEZAS: ");  //display.print("PIECES LEFT ");
      lcd.setCursor(12, 1);   //display.setCursor(30, 45);
      lcd.print(k);   // display.print(k);
      //lcd.print(" Nos");  //display.print(" Nos");
      lcd.display();

      ubidots.add("Peso total", i);
      ubidots.add("Piezas totales", k);
      
      bool bufferSent = false;
      bufferSent = ubidots.send(); // Se envian datos a ubidots (false/true)
      
      if (bufferSent) {
        //Do something if values were sent properly
        Serial.println("Valores enviados al dispositivo");
      }
      delay(1000);
      newDataReady = 0;
      t = millis();
    }
  }
}