lps22hh-rs

This crate provides a platform-agnostic driver for the ST LPS22HH pressure and temperature sensor, supporting both I2C and SPI communication interfaces.

Sensor Overview

The LPS22HH is an ultra-compact piezoresistive absolute pressure sensor which functions as a digital output barometer. The device comprises a sensing element and an IC interface which communicates through I²C, MIPI I3CSM or SPI from the sensing element to the application.

The sensing element, which detects absolute pressure, consists of a suspended membrane manufactured using a dedicated process developed by ST.

The LPS22HH is available in a full-mold, holed LGA package (HLGA). It is guaranteed to operate over a temperature range extending from -40 °C to +85 °C. The package is holed to allow external pressure to reach the sensing element

For more info, please visit the device page at https://www.st.com/en/mems-and-sensors/lps22hh.html

Installation

Add the driver to your Cargo.toml dependencies:

[dependencies]
lps22hh-rs = "0.1.0"

Or, add it directly from the terminal:

cargo add lps22hh-rs

Usage

Include the crate and its prelude

use lps22hh_rs as lps22hh;
use lps22hh::*;
use lps22hh::prelude::*;

Create an instance

Create an instance of the driver with the new_<bus> associated function, by passing an I2C (embedded_hal::i2c::I2c) instance and I2C address, or an SPI (embedded_hal::spi::SpiDevice) instance.

An example with I2C:

let mut sensor = Lps22hh::new_i2c(i2c, I2CAddress::AddressH);

Check "Who Am I" Register

This step ensures correct communication with the sensor. It returns a unique ID to verify the sensor's identity.

let whoami = sensor.device_id_get().unwrap();
if whoami != ID {
    panic!("Invalid sensor ID");
}

Configure

See details in specific examples; the following are common api calls:

// Restore default configuration
sensor.reset_set(1).unwrap();
loop {
    if sensor.reset_get().unwrap() == 0 {
        break;
    }
}

// Enable Block Data Update
sensor.block_data_update_set(1).unwrap();

// Set Output Data Rate
sensor.data_rate_set(Odr::_10hzLowNoise).unwrap();

License

Distributed under the BSD-3 Clause license.

More Information: http://www.st.com.

Copyright (C) 2025 STMicroelectronics