//github.com/adafruit/Adafruit-BMP085-Library/tree/master =скетч(BMP085test.ino),looksГУТ
//github.com/adafruit/Adafruit-BMP085-Library/blob/master/examples/BMP085test/BMP085test.ino
// атм.Pressure,T'C        bme280=bmp280+Humid            I2c
//BMP280 newer BMP180: greater resolution (of 0.16 Pa)
#include <Wire.h>
#include <Adafruit_BMP085.h>  
/* BMP085 Barometric Pressure & Temp Sensor   adafruit.com/products/391
   by Limor Fried/Ladyada for Adafruit Industries, BSD license */
//  VCC of the BMP085 sensor to 3.3V (NOT 5.0V!).     SCL -> A5,    SDA -> A4
// reset pin XCLR not used.   EOC pin not used
Adafruit_BMP085 bmp;
void setup()              { Serial.begin(9600);
/*  if (!bmp.begin()) {
	Serial.println("Could not find a valid BMP085 sensor, check wiring!");
	while (1) {}      } */  }
void loop() {
    Serial.print("Pressure = ");
    Serial.print(bmp.readPressure());           Serial.println(" Pa");

    Serial.print("Temperature = ");
    Serial.print(bmp.readTemperature());        Serial.println(" *C");
        
    // Calculate altitude assuming 'standard' barometric
    // pressure of 1013.25 millibar = 101325 Pascal
    Serial.print("Altitude = ");
    Serial.print(bmp.readAltitude());           Serial.println(" meters");

    Serial.print("Pressure at sealevel (calculated) = ");
    Serial.print(bmp.readSealevelPressure());   Serial.println(" Pa");

  // you can get a more precise measurement of altitude
  // if you know the current sea level pressure which will
  // vary with weather and such. If it is 1015 millibars
  // that is equal to 101500 Pascals.
    Serial.print("Real altitude = ");
    Serial.print(bmp.readAltitude(120000));    Serial.println(" meters");
    
    Serial.println();
    delay(5000);
}
BMP180Breakout