BMP280 pressure sensor

[philip.porhammer]

I am using the BMP280 not BME280 and the drivers from adafruit.

this is the monitor output:
Temperature = 0.00 *C
Pressure = 0.00 Pa
Approx altitude = 44330.00 m

here is the code, I went and used the "Sketch / include lib/ manage lib and it seemed to find the BMP280 and Adafruit_sensor lib.

this is the area in question:
#include <Wire.h> //***********Wire is RED text[/B]
#include <SPI.h> //***********SPI is RED text
#include <Adafruit_Sensor.h> //***********Adafruit_Sensor is normal text
#include <Adafruit_BMP280.h> //***********Adafruit_BMP280 is normal text

does this lib work for the Teency 3.2?
/***************************************************************************
This is a library for the BMP280 humidity, temperature & pressure sensor

Designed specifically to work with the Adafruit BMEP280 Breakout
----> http://www.adafruit.com/products/2651

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 andopen-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> //***********Wire is RED text[/B]
#include <SPI.h> //***********SPI is RED text
#include <Adafruit_Sensor.h> //***********Adafruit_Sensor is normal text
#include <Adafruit_BMP280.h> //***********Adafruit_BMP280 is normal text

#define BMP_SCK 13
#define BMP_MISO 12
#define BMP_MOSI 11
#define BMP_CS 15

//Adafruit_BMP280 bmp; // I2C
//Adafruit_BMP280 bmp(BMP_CS); // hardware SPI
Adafruit_BMP280 bmp(BMP_CS, BMP_MOSI, BMP_MISO, BMP_SCK);

void setup() {
Serial.begin(9600);
Serial.println(F("BMP280 test"));

//if (!bmp.begin()) {
// Serial.println(F("Could not find a valid BMP280 sensor, check wiring!"));
// while (1);
// }
}

void loop() {
Serial.print(F("Temperature = "));
Serial.print(bmp.readTemperature());
Serial.println(" *C");

Serial.print(F("Pressure = "));
Serial.print(bmp.readPressure());
Serial.println(" Pa");

Serial.print(F("Approx altitude = "));
Serial.print(bmp.readAltitude(1013.25)); // this should be adjusted to your local forcase
Serial.println(" m");

Serial.println();
delay(2000);
}

 

[tonton81]

sorry but you absolutely need to run begin(), why you comment it out?

 

[mjs513]

I use the BME280 sensor and the drivers are very similar. tonton81 is absolutely correct you need the bmp.begin() statement in the loop. Its better to uncomment that whole block - the begin function will test to see if the BMP280 is connected correctly and working correctly.