This is a Free Pascal driver for the BME280 sensor that measures temperature, humidity, and air pressure. The driver supports both default and user-configured settings and includes accurate dewpoint calculation.

This driver provides functions for interacting with the BME280 sensor via I2C on the Raspberry Pi. It offers two initialization methods: one with default settings and one for user-defined configurations.

• Supports both I2C addresses $76 and $77.
• Two initialization functions: one with default settings and one for custom configuration.
• All parameters are defined as constants for ease of use.
• Simple integration with Raspberry Pi (requires I2C enabled).

• Unterstützt sowohl die I2C-Adressen $76 als auch $77.
• Zwei Initialisierungsfunktionen: eine mit Standardeinstellungen und eine für benutzerdefinierte Konfiguration.
• Alle Parameter sind als Konstanten definiert, um die Verwendung zu erleichtern.
• Einfache Integration mit Raspberry Pi (erfordert aktiviertes I2C).

1. Enable I2C on your Raspberry Pi (run sudo raspi-config, then navigate to Interfacing Options → I2C and enable it).
2. Clone this repository:

git clone https://github.com/RaspberryFpc/BME280-FreePascal-Driver.git

3. Add the bme280.pas file to your project.

Initializes the BME280 sensor with user-defined configurations.

function Initbme280(HumidityOversampling, PressureOversampling, TemperatureOversampling, mode, Repeattime, filter: byte): integer;

Initializes the BME280 sensor with default settings.

function Initbme280_WithDefaults: integer;

MIT License
Copyright (c) 2025 [Your Name]

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
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