Documentation

// BMP280 Pressure & Temperature Sensor - Arduino Example
// Library: Adafruit BMP280 Library (Library Manager)

#include <Wire.h>
#include <Adafruit_BMP280.h>

Adafruit_BMP280 bmp;

void setup() {
  Serial.begin(9600);
  if (!bmp.begin(0x76)) {   // Default address; try 0x77 if 0x76 fails
    Serial.println("BMP280 not found!");
    while (1) {}
  }

  bmp.setSampling(Adafruit_BMP280::MODE_NORMAL,
                  Adafruit_BMP280::SAMPLING_X2,    // temperature
                  Adafruit_BMP280::SAMPLING_X16,   // pressure
                  Adafruit_BMP280::FILTER_X16,
                  Adafruit_BMP280::STANDBY_MS_500);
}

void loop() {
  Serial.print("Temp: ");      Serial.print(bmp.readTemperature()); Serial.println(" C");
  Serial.print("Pressure: ");  Serial.print(bmp.readPressure() / 100.0F); Serial.println(" hPa");
  Serial.print("Altitude: ");  Serial.print(bmp.readAltitude(1013.25)); Serial.println(" m");
  Serial.println();
  delay(1000);
}

#!/usr/bin/env python3
# BMP280 - Raspberry Pi Python Example
# Install: sudo pip3 install adafruit-circuitpython-bmp280

import time
import board
import adafruit_bmp280

i2c = board.I2C()
bmp = adafruit_bmp280.Adafruit_BMP280_I2C(i2c, address=0x76)
bmp.sea_level_pressure = 1013.25

while True:
    print(f"Temp: {bmp.temperature:.2f} C")
    print(f"Pressure: {bmp.pressure:.2f} hPa")
    print(f"Altitude: {bmp.altitude:.2f} m\n")
    time.sleep(1)

# BMP280 - Pico MicroPython Example
# Requires bmp280.py from David Stenwall's micropython-bmp280 library.

from machine import Pin, I2C
from bmp280 import BMP280
import time

i2c = I2C(0, scl=Pin(5), sda=Pin(4), freq=400_000)
bmp = BMP280(i2c, addr=0x76)

while True:
    print("Temp:     {:.2f} C".format(bmp.temperature))
    print("Pressure: {:.2f} hPa".format(bmp.pressure / 100))
    print()
    time.sleep(1)