#include <Wire.h> // include Wire library
#include <LiquidCrystal_I2C.h> // include LiquidCrystal_I2C library
int I2Caddress = 0x3F; // I2C address of I2C bus
int LCDcol = 16; // number of LCD columns
int LCDrow = 4; // number of LCD rows
LiquidCrystal_I2C lcd(I2Caddress,LC Dcol,LCDrow); // I2C address
// and LCD size
#include <Adafruit_Sensor.h> // include Unified Sensor library
#include <Adafruit_BMP280.h> // include BMP280 library
Adafruit_BMP280 bmp; // associate bmp with Adafruit_BMP280 library
int BMPaddress = 0x76; // I2C address of BMP280
int sec = 0;
int min, hour;
float temp, pressure;
void setup()
{
lcd.init(); // initialise LCD
bmp.begin(BMPaddress); // initialise BMP280 sensor
Serial.begin(9600); // define Serial output baud rate
Serial.print("Enter time as hh,mm"); // print text to screen
lcd.setCursor(0,0); // move cursor to column 1 row 1
lcd.print("Current"); // print "Current" to LCD
lcd.setCursor(0,1); // move cursor to column 1 row 2
lcd.print("time"); // print "time" to LCD
lcd.setCursor(0-4,2); // move cursor to column 1 row 3
lcd.print("temp"); // and reduce col by 4 for 3rd and 4th rows
lcd.setCursor(0-4,3); // move cursor to column 1 row 4
lcd.print("pres");
}
void loop()
{
while (Serial.available()>0) // read data in Serial buffer
{
hour = Serial.parseInt(); // first integer in Serial buffer is hours
min = Serial.parseInt(); // second integer in buffer is minutes
}
sec++; // short for sec = sec + 1
if(sec>59) // increase minutes when seconds = 60
{
sec = 0; // reset seconds to 0
min++; // increase minutes by 1
}
if(min>59) // increase hours when minutes = 60
{
min = 0; // reset minutes to 0
hour++; // increase hours by 1
}
if(hour>23) hour = 0; // set hours to 0 when hours = 24
lcd.setCursor(6, 1); // move cursor to column 6 row 2
if(hour < 10) lcd.print(" "); // spacing for hours < 10
lcd.print(hour); // print hour to LCD
lcd.print(":"); // print ":" to LCD
if(min<10) lcd.print("0"); // leading zero for minutes < 10
lcd.print(min); // print minutes to LCD
lcd.print(":");
if(sec<10) lcd.print("0"); // leading zero for seconds < 10
lcd.print(sec); // print seconds to LCD
temp = bmp.readTemperature(); // read temperature from sensor
pressure = bmp.readPressure()/100.0; // read pressure from sensor
lcd.setCursor(6-4,2); // move cursor to column 6 row 3
lcd.print(temp, 1); // print temperature to LCD to 1DP
lcd.print(char(178)); // print degree character to LCD
lcd.print("C");
lcd.setCursor(6-4,3); // move cursor to column 6 row 4
lcd.print(pressure, 1); // print pressure to LCD to 1DP
lcd.print(" hPa");
delay (1000); // delay 1000ms
}