Getting Started with FoBE Breakout LPS22

Introduction

The FoBE Breakout LPS22 integrates the ST LPS22HB digital barometric pressure sensor, supporting data output rates up to 75Hz with 24-bit pressure and 16-bit temperature data output. Multiple connectivity options are provided for easy integration into various applications.

Applications

Altimeters and barometers for portable devices
Weather station equipment

Key Features

LPS22HB
- 260 to 1260 hPa absolute pressure range
- High overpressure capability: 20x full-scale
- Embedded temperature compensation
- 24-bit pressure data output
- 16-bit temperature data output
- ODR from 1 Hz to 75 Hz
- Embedded FIFO
- Interrupt functions: Data Ready, FIFO flags, pressure thresholds
- High shock survivability: 22,000 g
- Small and thin package
- ECOPACK® lead-free compliant
Connectivity
- MFP-IIC interface (JST-SH1.0 4-Pin)
- 5 x 2.54mm Pin Header

Hardware diagram

The following figure illustrates the FoBE Breakout LPS22 hardware diagram.

Mechanical dimensions

FoBE Breakout LPS22 is a single-sided 25.4mm x 25.4mm (1" x 1") 1.6mm thick PCB with two SH1.0 4-pin connectors and a set of 5-pin 2.54mm header holes. Fixing by 4 x 1.6mm Screw holes.

Interfaces

The module provides dual 5-Pin JST SH1.0 connectors, compatible with STEMMA QT / Qwiic.

2.54mm 5-Pin	JST-SH1.0	Features
GND	GND	Ground
3V3	3V3	Power supply, Only 3.3V
SDA	SDA	I2C-Data line
SCL	SCL	I2C-Clock line
INT		Interrupt, Active Low

Advanced

Jumper

The module features two jumper pad:

Interface	Description
LED-JUMPER	Disconnect this jumper to turn off the power LED for further power saving
LPS22-ADDR	I2C address selector: 0x5D `Set JUMPER:H` 0x5C `Set JUMPER:L`

Programming

Running with FoBE Quill ESP32S3 Mesh

Let's get started with the FoBE Quill ESP32S3 Mesh using the MFP interface.

Connect the FoBE Breakout LPS22 to the FoBE Quill ESP32S3 Mesh using the MFP interface.

Create a sketch or PlatformIO project, or follow the FoBE Quill ESP32S3 Programming Guide for pre-configuration.
Install the necessary library in your project:

adafruit/Adafruit LPS2X@^2.0.6

Copy the following code into your sketch or PlatformIO project:

#include <Adafruit_LPS2X.h>

#define I2C_ADDRESS 0x5C        // I2C address definition for LPS22
#define I2C_SDA_PIN PIN_MFP3    // SDA pin for MFP to I2C cable, change if needed
#define I2C_SCL_PIN PIN_MFP4    // SCL pin for MFP to I2C cable, change if needed
#define PERI_EN_PIN PIN_PERI_EN // Peripheral enable pin, change if needed

Adafruit_LPS22 sensor;

void setup()
{
  // Initialize serial communication
  Serial.begin(115200);
  Serial.println("Serial initialized");

  // Initialize peripheral power
  if (PERI_EN_PIN >= 0)
  {
    pinMode(PERI_EN_PIN, OUTPUT);
    digitalWrite(PERI_EN_PIN, HIGH); // Enable peripheral power
    Serial.println("Peripheral power enabled");
  }

  // Initialize sensor
  Wire.begin(I2C_SDA_PIN, I2C_SCL_PIN);
  sensor.begin_I2C(I2C_ADDRESS);
  Serial.println("I2C bus initialized");
  while (!sensor.begin_I2C(I2C_ADDRESS))
  {
    delay(200);
  }
  Serial.println("LPS22 sensor initialized");

  // Start measurement
  // LPS22 is ready for measurements after initialization
}

void loop()
{
  delay(1000); // Wait equivalent to sensor.wait()

  sensors_event_t temp, pressure;
  Adafruit_Sensor *temp_sensor = sensor.getTemperatureSensor();
  Adafruit_Sensor *pressure_sensor = sensor.getPressureSensor();
  
  // Equivalent to sensor.update() == RESULT_OK
  if (temp_sensor && pressure_sensor)
  {
    temp_sensor->getEvent(&temp);
    pressure_sensor->getEvent(&pressure);
    
    // Equivalent to sensor.hasNewData()
    if (temp.temperature != 0.0 || pressure.pressure != 0.0)
    {
      // Display data on screen
      Serial.print("\033[H\033[J");
      Serial.println("> FoBE Breakout LPS22 Monitor");
      Serial.println();
      Serial.print("\033[7m");
      Serial.printf("%-12s%-12s%-12s\n", "INDEX", "VALUE", "UNIT");
      Serial.print("\033[0m");
      Serial.printf("%-12s%-12.2f%-12s\n", "TEMP", temp.temperature, "°C");
      Serial.printf("%-12s%-12.2f%-12s\n", "PRESSURE", pressure.pressure, "hPa");
    }
  }
}

important

This example code uses ANSI output formatting. Your terminal must support ANSI escape codes to display the output correctly.

# platformio.ini
[env:fobe_quill_esp32s3_mesh]
platform = FoBE Espressif 32
board = fobe_quill_esp32s3_mesh
framework = arduino
lib_deps = 
	adafruit/Adafruit LPS2X@^2.0.6
monitor_speed = 115200
monitor_raw = true

Build and upload the project. You should see the FoBE Breakout LPS22 Monitor output in the serial monitor (raw mode).

> FoBE Breakout LPS22 Monitor

INDEX       VALUE       UNIT        
TEMP        27.60       °C         
PRESSURE    1001.28     hPa                    

Resources

[PDF] FoBE Breakout LPS22 Datasheet

[PDF] FoBE Breakout LPS22 Schematic

[PDF] FoBE Breakout LPS22 Dimension

[OBJ] FoBE Breakout LPS22 3D Model

[PDF] LPS22HB Datasheet

Introduction​

Applications​

Key Features​

Hardware diagram​

Mechanical dimensions​

Interfaces​

Advanced​

Jumper​

Programming​

Running with FoBE Quill ESP32S3 Mesh​

Resources​