#include "CQRobotTDS.h"
#include <Adafruit_MPU6050.h>
#include <Adafruit_Sensor.h>
#include "LiquidCrystal_I2C.h"
#include <SoftwareSerial.h> 
//IAM USING HC-05 AND THE APPLICATION IS BLUETERM+ AVELABLE ON GOGLE PLAY FOR FREE

#include <Wire.h>

CQRobotTDS tds(A0);
Adafruit_MPU6050 mpu;
SoftwareSerial bluetoothSerial(10, 11); // RX, TX pins for HC-05
LiquidCrystal_I2C lcd(0x27, 20, 4);

unsigned long timeout = 0;
float BETA = 3950;

void setup() {
  Serial.begin(9600);
  bluetoothSerial.begin(9600); 

  lcd.init();
  lcd.backlight();

  while (!mpu.begin()) {
    Serial.println("MPU6050 not connected!");
    delay(1000);
  }
  Serial.println("MPU6050 ready!");
}

sensors_event_t event;

void loop() {
  int analogValue = analogRead(A2);
  float celsius = 1 / (log(1 / (1023.0 / analogValue - 1)) / BETA + 1.0 / 298.15) - 273.15;
  float tdsValue = tds.update(celsius);
  mpu.getAccelerometerSensor()->getEvent(&event);
  mpu.getGyroSensor()->getEvent(&event);

  if (timeout < millis()) {
    lcd.clear();
    lcd.setCursor(0, 0);
    lcd.print("Temp: ");
    lcd.print(celsius);
    lcd.print(" C");
    lcd.setCursor(0, 1);
    lcd.print("TDS: ");
    lcd.print(tdsValue, 0);
    lcd.print(" ppm");
    lcd.setCursor(0, 2);
    lcd.print("x: ");
    lcd.print(event.acceleration.x * 57.33944954128);
    lcd.print(" y: ");
    lcd.print(event.acceleration.y * 57.33944954128);
    lcd.setCursor(0, 3);
    lcd.print("z: ");
    lcd.print(event.acceleration.z * 57.33944954128);

    Serial.print("Temperature: ");
    Serial.print(celsius);
    Serial.println(" C");
    Serial.print("TDS value: ");
    Serial.print(tdsValue, 0);
    Serial.println(" ppm");
    Serial.print("Accelerometer x: ");
    Serial.print(event.acceleration.x * 57.33944954128);
    Serial.print(" y: ");
    Serial.print(event.acceleration.y * 57.33944954128);
    Serial.print(" z: ");
    Serial.println(event.acceleration.z * 57.33944954128);
    Serial.println("");


    if (bluetoothSerial.available()) {

      char receivedChar = bluetoothSerial.read();
      if (receivedChar == 'D') {

       bluetoothSerial.println("Program started!");

       bluetoothSerial.print("Temperature: ");
       bluetoothSerial.print(celsius);
       bluetoothSerial.println(" C");
       bluetoothSerial.print("TDS value: ");
       bluetoothSerial.print(tdsValue, 0);
       bluetoothSerial.println(" ppm");
       bluetoothSerial.print("Accelerometer x: ");
       bluetoothSerial.print(event.acceleration.x * 57.33944954128);
       bluetoothSerial.print(" y: ");
       bluetoothSerial.print(event.acceleration.y * 57.33944954128);
       bluetoothSerial.print(" z: ");
       bluetoothSerial.println(event.acceleration.z * 57.33944954128);
       bluetoothSerial.println("");
    
      }
      if (receivedChar == 'C') 
      {
        Serial.println(bluetoothSerial.read());
      }

      if (Serial.available()){
       bluetoothSerial.write(Serial.read());
      }
    }


  timeout = millis() + 1000;
} 
}