/*
 * Lesson 96: Using Precision BMP390 Barometric Pressure and Temperature Sensor
 * with Arduino with LCD2004
 * Watch video instruction on YouTube:  https://youtu.be/XevQYG_A5xA
 * 
 * Code updated by Ahmad Shamshiri for Robojax.com
 * on Jan 13, 2022 at 17:10 in Ajax, Ontario, Canada
  
  This video is part of Arduino Step by Step Course which starts here: https://youtu.be/-6qSrDUA5a8
 

If you found this tutorial helpful, please support me so I can continue creating content like this
and make a donation using PayPal http://robojax.com/L/?id=64


  This is a library for the BMP390 temperature & pressure sensor

  Designed specifically to work with the Adafruit BMP388 Breakout
  ----> http://www.adafruit.com/products/3966

  These sensors use I2C or SPI to communicate, 2 or 4 pins are required
  to interface.

  Adafruit invests time and resources providing this open source code,
  please support Adafruit and open-source hardware by purchasing products
  from Adafruit!

  Written by Limor Fried & Kevin Townsend for Adafruit Industries.
  BSD license, all text above must be included in any redistribution
 **************************************************************************
 */
#include <Wire.h>

#include <Adafruit_Sensor.h>
#include "Adafruit_BMP3XX.h"


#define SEALEVELPRESSURE_HPA (1013.25)

Adafruit_BMP3XX bmp;
int bmpVCCPin = 12;
boolean fahrenheit = true;//for Celsius set it to "false"

#include <LiquidCrystal_I2C.h>
// Set the LCD address to 0x27 or 0x3F for a 20 chars and 4  line display
LiquidCrystal_I2C lcd(0x27, 20, 4);


void setup() {
    pinMode(bmpVCCPin, OUTPUT);// set pin as output
    digitalWrite(bmpVCCPin,HIGH);// always keep it high (5V) for BMB390 module
     
  Serial.begin(9600);
  while (!Serial);
  Serial.println("Adafruit BMP388 / BMP390 test");

  if (!bmp.begin_I2C()) {   // hardware I2C mode, can pass in address & alt Wire
    Serial.println("Could not find a valid BMP3 sensor, check wiring!");
    while (1);
  }

  // Set up oversampling and filter initialization
  bmp.setTemperatureOversampling(BMP3_OVERSAMPLING_8X);
  bmp.setPressureOversampling(BMP3_OVERSAMPLING_4X);
  bmp.setIIRFilterCoeff(BMP3_IIR_FILTER_COEFF_3);
  bmp.setOutputDataRate(BMP3_ODR_50_HZ);
  // initialize the LCD, 
  lcd.begin();
  // Turn on the blacklight and print a message.
  lcd.backlight();     
  lcd.print("Robojax Video");
  lcd.setCursor (0,1); // go to start of 2nd line
  lcd.print("BMP390 Test LCD2004");
  lcd.setCursor (0,2); // go to start of 3nd line
  lcd.print("www.Robojax.com");  
  delay(4000);  
}

void loop() {
  if (! bmp.performReading()) {
    Serial.println("Failed to perform reading :(");
    return;
  }

    // Robojax.com BME390 Code
   lcd.clear();// clear previous values from screen  

lcdDisplay(
             // to print Celsius:
             0, // character 0 
             0, // line 0
             "Celsius: ", 

             // to print Celsius value
             12, // character undefined
             0, // line 0
             getBMP('C'),
             'C'
             );  

 lcdDisplay(
             // to print fahrenheit:
             0, // character 0 
             1, // line 2
             "Fahrenheit: ", 

             // to print Fahrenheit value
             12, // character 9
             1, // line 2
             getBMP('F'),
             'F'
             );  
 

lcdDisplay(
             // to print pressure text
             0, // character 0 
             2, // line 3
             "Pressure:", 

             // to print pressure value
             99, // character undefined
             2, // line 3
             getBMP('P'),
             'p' 
             );  
  lcdDisplay(
             // to print altitude text
             0, // character 0 
             3, // line 4
             "Aprx. Alt.:", 

             // to print Altitude value
             12, // character undefined
             3, // line 4
             getBMP('A'),
             'm' 
             );                   
        delay(4000);

     // Robojax.com BMP390 Code                                

  //take action, do something when temperature is greater than 38.0 C
  if(bmp.temperature >38.0)
  {
   digitalWrite(10, HIGH); 

   
  }else{
    digitalWrite(10, LOW);
  }
  delay(2000);
  printRobojax(false);//set to true, or false
  
}//loop ends here

/*
 * @brief returns temperature or relative humidity
 * @param "type" is character
 *     C = Celsius
 *     K = Kelvin
 *     F = Fahrenheit
 *     H = Humidity
 *     P = Pressure
 *     A = Altitude
 * @return returns one of the values above
 * Usage: to get Fahrenheit type: getBMP('F')
 * to print it on serial monitor Serial.println(getBMP('F'));
 * Written by Ahmad Shamshiri on July 13, 2019. Update 13 Jan 2022
 * at 20:56 
 * in Ajax, Ontario, Canada
 * www.Robojax.com 
 */
float getBMP(char type)
{
   // Robojax.com BMP390 Code
  float value;
    float temp = bmp.temperature;
  if(type =='F')
   {
    value = temp *9/5 + 32;//convert to Fahrenheit 
   }else if(type =='K')
   {
    value = temp + 273.15;//convert to Kelvin
   }else if(type =='P')
   {
    value = bmp.pressure / 100.0F; // read pressure
   }else if(type =='A')
   {
    value = bmp.readAltitude(SEALEVELPRESSURE_HPA);// read altitude
   }else{
    value = bmp.temperature;// read temperature
   }
   return value;
    // Robojax.com BME390 Code
}//getBME



/*
 * lcdDisplay(int tc, int tr, String title, int vc, int vr, float value)
 * displays value and title on LCD1602
 * How to use:
 * If you want to display: "Temp.: 340.45K" starting from first character
 * on second row.
 * use:
 * lcdDisplay(0, 1, "Temp.: ", 340.45,'K')
 *   
 *   'C' is degree symbol for C and F
 * tc  is character number  (0)
 * tr is row in the lcd (1)
 * title is the text (Voltage:)
 * vc value for character 
 * vr value for  row or line
 * value is the value (13.56)
 */
void lcdDisplay(int tc, int tr, String title, int vc, int vr, float value,char symbol)
{
   // Robojax.com LCD1602 for BMP390 Demo

   lcd.setCursor (tc,tr); //
   lcd.print(title);
   if(vc !=99)
   {
   lcd.setCursor (vc,vr); //
   }   
   lcd.print(value);
   if(symbol == 'C')
   {
    lcd.print((char)223);
    lcd.print('C');
   }else if(symbol == 'F')
   {
    lcd.print((char)223);
    lcd.print('F');
   }else if(symbol =='k')
   {
    lcd.print("K");
   }else if(symbol =='p')
   {
    lcd.print("hPa");
   }else if(symbol =='m')
   {
    lcd.print("m");
   }
}
 // Robojax.com LCD1602 for BMP390 Demo

/*
 * 
 * this function, if called, will print Robojax stuff
 * */
 void printRobojax( boolean doPrint)
 {
  if (doPrint){
   lcd.clear();// clear previous values from screen  
   lcd.setCursor (0,0); //set to line char 1, line 1
   lcd.print("Robojax  Tutorial"); 

   lcd.setCursor (0,1); //set to line char 1, line 2
   lcd.print("BME390 Demonstration");    

   lcd.setCursor (0,0); //set to line char 1, line 1
   lcd.print("Robojax  Tutorial"); 

   lcd.setCursor (0,2); //set to line char 1, line 3
   lcd.print("Dispaly on LCD2004");  

   lcd.setCursor (0,3); //set to line char 1, line 4
   lcd.print("www.ROBOJAX.com");
   delay(4000);     
  }     
 }