ibutra / bmp388

embedded-hal compatible driver for bmp388 pressure sensor

bmp388

no_std driver for the bmp388 (pressure sensor).

Basic usage

Include library as a dependency in your Cargo.toml :

[dependencies.bmp388]
version = "<version>"

Use embedded-hal implementation to get I2C handle and delay then create bmp388 handle:

extern crate bmp388; // or just use bmp388; if 2018 edition is used.

// to create sensor with default configuration:
let mut ps = bmp388::BMP388::new(i2c)?;
// to get pressure:
let pres = ps.sensor_values();
println!("{:?}", pres);

Documentation

API Docs available on docs.rs.

Features

• default: none enabled by default
• defmt-03 - enable [email protected] formatting for structs and enums
• serde - enable serde Deserialize and Serialize implementations on structs and enums
• asynch - enable embedded-hal-async implementation for the Asynchronous API.
• config-builder - enable the typed config builder ConfigBuilder for setting up the sensor and initializing it.

Minimum supported Rust version (MSRV)

For the blocking API the MSRV is 1.65, however, for the asynchronies API, enabled with the feature asynch, the MSRV is 1.75.

ToDo:

• Implement FiFo Buffer support

Origin

Based on the bmp280 crate by Roma Sokolov and Alexander Zhuravlev.

License

• MIT license (LICENSE-MIT or http://opensource.org/licenses/MIT)

bmp388's Issues

Config builder: Pass in Address and Delay to creating new instance from Config

Leftover task from #9

Altitude calculation seems off

Current altitude formula

In #5 altitude methods were introduced for calculating and calibrate abs. difference, however, the current formula calculations (taken from https://www.weather.gov/media/epz/wxcalc/pressureAltitude.pdf) seem wrong when compared to other online tools.

https://www.omnicalculator.com/physics/air-pressure-at-altitude

Logs:

INFO - BMP388 Calibrating at altitude 141.36888383097644 meters
INFO - New Sea level set at: 101328.06208886617 Pa
INFO - (bmp388 sensor_values): Pressure: 99628.1662335411; Temperature: 25.38629681384191; Altitude: 141.36888383097644 m
INFO - (bmp388 sensor_values): Pressure: 99634.87939805973; Temperature: 25.453032821416855; Altitude: 142.54845930816927 m
INFO - (bmp388 sensor_values): Pressure: 99622.3665093767; Temperature: 25.453032821416855; Altitude: 142.11197706159922 m
INFO - (bmp388 sensor_values): Pressure: 99635.88297983391; Temperature: 25.457481851335615; Altitude: 142.28127752284794 m
INFO - (bmp388 sensor_values): Pressure: 99645.22866162275; Temperature: 25.461930876597762; Altitude: 141.76015579386856 m
INFO - (bmp388 sensor_values): Pressure: 99622.3665093767; Temperature: 25.453032821416855; Altitude: 141.59085769020234 m
INFO - (bmp388 sensor_values): Pressure: 99635.88297983391; Temperature: 25.457481851335615; Altitude: 141.76015579386856 m

New formulas

https://www.grc.nasa.gov/WWW/K-12/airplane/atmosmet.html

Config builder: Check Config defaults before calling I2C on initialisation

Leftover task from #9

`embedded-hal-async 1.0.0-rc.1` traits impl

• Should be enabled with a features
• Should be either a separate struct or the api should differ from the current one.

https://docs.rs/embedded-hal-async

`embedded-hal 1.0.0` traits impl

• Should be enabled with a feature It is now stable so we don't need a feature