app: add fetching data from bme280 sensor

[nmpluta]

Refs: #4

[nmpluta]

This pull request removes the custom example sensor driver and updates the application to use the standard BME280 sensor on the nRF9160 DK board. It also cleans up related configuration and overlay files, and improves logging and error handling in the main application loop.

Switch to BME280 sensor and cleanup of custom sensor:

• Removed the entire custom example sensor driver and its configuration (drivers/sensor/example_sensor/*, drivers/sensor/CMakeLists.txt, drivers/sensor/Kconfig, drivers/sensor/example_sensor/CMakeLists.txt, drivers/sensor/example_sensor/Kconfig, drivers/sensor/example_sensor/example_sensor.c) [1] [2] [3] [4] [5].
• Updated the nRF9160 DK overlay to enable and configure the BME280 sensor on i2c2, and removed the example sensor node (app/boards/nrf9160dk_nrf9160.overlay).
• Removed the overlay file for the nRF54L15 DK, which referenced the example sensor (app/boards/nrf54l15dk_nrf54l15_cpuapp.overlay).

Application logic and logging improvements:

• Updated main.c to use the BME280 sensor, fetch temperature, pressure, and humidity, and log these values. Improved error handling and switched to using LOG_INF/LOG_ERR instead of printk (app/src/main.c) [1] [2].
• Changed the project configuration to enable logging and removed the generic sensor configuration (app/prj.conf).

Driver and build system cleanup:

• Removed references to the example sensor and generic sensor driver from the build system and driver configuration (drivers/CMakeLists.txt, drivers/Kconfig) [1] [2].

Overall, these changes simplify the codebase by removing a custom sensor implementation and switching to a standard, supported sensor, while also improving maintainability and logging.

[Copilot]

Pull Request Overview

This PR refactors the fire detection system to use a BME280 sensor instead of a custom example sensor for environmental monitoring. The change improves the system by integrating a real environmental sensor that can measure temperature, pressure, and humidity.

• Removes custom example sensor driver and infrastructure
• Integrates BME280 sensor with I2C communication
• Updates application to read and log temperature, pressure, and humidity data

Reviewed Changes

Copilot reviewed 11 out of 11 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
drivers/sensor/example_sensor/*	Removes custom example sensor driver files
drivers/Kconfig	Removes sensor driver configuration
drivers/CMakeLists.txt	Removes sensor driver build configuration
app/src/main.c	Updates to use BME280 sensor and read environmental data
app/prj.conf	Adds I2C and BME280 configuration options
app/boards/nrf9160dk_nrf9160.overlay	Configures I2C2 interface and BME280 device
app/boards/nrf54l15dk_nrf54l15_cpuapp.overlay	Removes example sensor configuration

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