Crate bmp390 

The BMP390 is a digital sensor with pressure and temperature measurement based on proven sensing principles. The sensor is more accurate than its predecessor BMP380, covering a wider measurement range. It offers new interrupt functionality, lower power consumption, and a new FIFO functionality. The integrated 512 byte FIFO buffer supports low power applications and prevents data loss in non-real-time systems.

Bmp390 is a driver for the BMP390 sensor. It provides methods to read the temperature and pressure from the sensor over I2C. It is built on top of the embedded_hal_async::i2c traits to be compatible with a wide range of embedded platforms. Measurements utilize the uom crate to provide automatic, type-safe, and zero-cost units of measurement for Measurement.

Example

use bmp390::Bmp390;
let config = bmp390::Configuration::default();
let mut sensor = Bmp390::try_new(i2c, bmp390::Address::Up, delay, &config).await?;
let measurement = sensor.measure().await?;
defmt::info!("Measurement: {}", measurement);

Datasheet

The BMP390 Datasheet contains detailed information about the sensor’s features, electrical characteristics, and registers. This package implements the functionality described in the datasheet and references the relevant sections in the documentation.

Synchronous API

The synchronous API is available behind the sync feature flag. It’s driver is sync::Bmp390 and functions similarly to the asynchronous driver, but with synchronous methods.

By default, the synchronous API is disabled.

Modules

syncsync

This module provides a synchronous verison of the Bmp390 driver, built on top of embedded_hal::i2c.

Structs

Bmp390

A driver for the BMP390 pressure sensor over any I2c implementation.

Cmd

Register::CMD issues commands to the BMP390.

Config

Register::CONFIG controls the IIR filter coefficients.

Configuration

Configuration for the BMP390 barometer.

ErrReg

Register::ERR_REG contains sensor error conditions.

Event

Register::EVENT contains status flags for certain events. These flags are cleared on read.

IntControl

Register::INT_CTRL configures the interrupt settings and affects Register::INT_STATUS and the INT pin.

IntStatus

Register::INT_STATUS shows interrupt statuses and is cleared on read.

Measurement

A single measurement from the Bmp390 barometer.

Odr

Register::ODR sets the configuration of the output data rates by means of setting the subdivision/subsampling.

Osr

Register::OSR controls the oversampling settings for pressure and temperature measurements.

PowerControl

Register::PWR_CTRL enables or disables pressure and temperature measurements and sets the PowerMode.

Status

Register::STATUS contains sensor status flags.

Enums

Address

The BMP390 barometer’s I2C addresses, either 0x76 or 0x77.

Command

Available commands that can be written to Register::CMD.

Error

Errors that can occur when communicating with the BMP390 barometer.

IirFilter

The IIR filter can suppress short-term pressure disturbances by filtering internally.

IntLevel

The interrupt level for the INT pin.

IntOd

The interrupt output type for the INT pin.

OdrSel

The output data rate (ODR) is the rate at which the sensor provides new data.

Oversampling

Oversampling settings for pressure and temperature measurements.

PowerMode

The BMP390 offers three power modes: sleep mode, forced mode and normal mode.

Register

The BMP390 has a number of registers to provide access to the sensor’s data and control various settings.