Introduction

CircuitPython library for the BMP580 / BMP581 / BMP585 / etc barometric pressure sensors.

Please note: This driver currently only supports I2C communication. If you have a need for SPI support in the CircuitPython driver please file an issue.

Dependencies

This driver depends on:

• Adafruit CircuitPython

• Bus Device

• Register

Please ensure all dependencies are available on the CircuitPython filesystem. This is easily achieved by downloading the Adafruit library and driver bundle or individual libraries can be installed using circup.

• Purchase BMP580 from the Adafruit shop

• Purchase BMP581 from the Adafruit shop

• Purchase BMP585 from the Adafruit shop

Installing from PyPI

On supported GNU/Linux systems like the Raspberry Pi, you can install the driver locally from PyPI. To install for current user:

pip3 install adafruit-circuitpython-bmp5xx

To install system-wide (this may be required in some cases):

sudo pip3 install adafruit-circuitpython-bmp5xx

To install in a virtual environment in your current project:

mkdir project-name && cd project-name
python3 -m venv .venv
source .env/bin/activate
pip3 install adafruit-circuitpython-bmp5xx

Installing to a Connected CircuitPython Device with Circup

Make sure that you have circup installed in your Python environment. Install it with the following command if necessary:

pip3 install circup

With circup installed and your CircuitPython device connected use the following command to install:

circup install adafruit_bmp5xx

Or the following command to update an existing version:

circup update

Usage Example

import time

import board

from adafruit_bmp5xx import BMP5XX

SEALEVELPRESSURE_HPA = 1013.25

# I2C setup
i2c = board.I2C()  # uses board.SCL and board.SDA
# i2c = board.STEMMA_I2C()  # For using the built-in STEMMA QT connector on a microcontroller

bmp = BMP5XX(i2c)

bmp.sea_level_pressure = SEALEVELPRESSURE_HPA

while True:
    if bmp.data_ready:
        print(
            f"temp F: {bmp.temperature * (9 / 5) + 32} "
            f"pressure: {bmp.pressure} hPa "
            f"Approx altitude: {bmp.altitude} m"
        )
        time.sleep(1)

Documentation

API documentation for this library can be found on Read the Docs.

For information on building library documentation, please check out this guide.

Contributing

Contributions are welcome! Please read our Code of Conduct before contributing to help this project stay welcoming.