Python BMP280

Python library for accessing temperature and pressure measurments of BMP280 chip

All modes of oversampling for temperature and pressure aswell as filter settings are available via this library.

Tested with Adafruit BMP280 temperature pressure sensors: https://www.adafruit.com/products/2651

Code I used as a reference developing this:

https://github.com/vitally/BMP280

https://github.com/gradymorgan/node-BMP280

https://github.com/adafruit/Adafruit_Python_BMP

Installation

To install run the setup.py file.

(e.g. sudo python setup.py install)

You need to have python and python-dev installed!

e.g. usage:

import BMP280.BMP280 as BMP280
sensor=BMP280.BMP280()
sensor.read_temperature_pressure()

Make sure you have chosen the right i2c-address

If you dont use the default i2c-bus 1 you can change this by the Argument busnum=x

See example file placed in ./examples/ for more guidance

Options for Usage

(e.g. sensor=BMP280.BMP280(modep=BMP280_LOWPOWER)

####BMP280 default address
BMP280_I2CADDR 0x77
BMP280_I2CADDR2 0x76

####SETTINGS FOR TEMPERATURE OVERSAMPLING
(OVER x2 SAMPLE NO USE FOR PRESSURE ACCURANCY)
modet=
BMP280_T_O1 x1 Sample
BMP280_T_O2 x2 Sample
BMP280_T_O4 x4 Sample
BMP280_T_O8 x8 Sample
BMP280_T_O16 x16 Sample

####PRESSURE OVERSAMPLING MODES
modep=
BMP280_ULTRALOWPOWER x1 Sample
BMP280_LOWPOWER x2 Sample
BMP280_STANDARD x4 Sample
BMP280_HIGHRES x8 Sample
BMP280_ULTRAHIGHRES x16 Sample

####FILTER SETTINGS >=75% STEP_RESPONCE AFTER SAMPLE
BMP280_FILTER_OFF 1
BMP280_FILTER_2 2
BMP280_FILTER_4 5
BMP280_FILTER_8 11
BMP280_FILTER_16 22

Functions:

_load_calibration(self)
_set_filter(self)
_load_datasheet_calibration(self)
read_raw_temp_pressure(self)
read_temperature_pressure(self)
read_altitude(self, sealevel_pa=101325.0)
read_sealevel_pressure(self, altitude_m=0.0)

#HAVE FUN USING THIS LIBRARY