//Air pressure detection w display
#include "Seeed_BMP280.h"
#include <Wire.h>
BMP280 bmp280;

#include <Arduino.h>
#include <U8x8lib.h>
U8X8_SSD1306_128X64_ALT0_HW_I2C u8x8(/* reset=*/ U8X8_PIN_NONE);


void setup() {
 Serial.begin(9600);
 if (!bmp280.init()) {
   Serial.println("Device not connected or broken!");
 }

 u8x8.begin();
 u8x8.setFlipMode(1);
 
}
void loop() {
 float pressure = bmp280.getPressure();
 float temp = bmp280.getTemperature(); 
 float altitude = bmp280.calcAltitude(pressure);

 String output = "Temp: " + String(temp) + "C\n"; 
 output += "P: " + String(pressure) + "Pa\n";
 output += "Alt: " + String(altitude) + "m\n\n";


 //get and print temperatures
 /*
    Serial.print("Temp: ");
    Serial.print(temp);
    Serial.println("C"); // The unit for  Celsius because original arduino don't support speical symbols
    //get and print atmospheric pressure data
    Serial.print("Pressure: ");
    Serial.print(pressure);
    Serial.println("Pa");
    //get and print altitude data
    Serial.print("Altitude: ");
    Serial.print(altitude);
    Serial.println("m");
    Serial.println("\n");//add a line between output of different times.
 
 */ 
 Serial.print(output);

 u8x8.setFont(u8x8_font_chroma48medium8_r);
 u8x8.setCursor(0, 0);
 u8x8.print(output);


 delay(1000);
}