Summary

This blog post walks through enabling Bluetooth Low Energy (BLE) support in a Zephyr application, covering the required Kconfig settings and Zephyr Bluetooth APIs. The author demonstrates how to create a custom GATT service and characteristic and how to use Zephyr's macros and helper functions to manage advertising, connections, and attribute permissions.

Key Takeaways

• Enable BLE in Zephyr by selecting and verifying the correct Kconfig options (CONFIG_BT_*) for your board and build.
• Create a custom GATT service and characteristic using Zephyr's bt_gatt APIs and UUID macros.
• Use Zephyr helper macros and callback patterns to handle advertising, connections, and attribute read/write operations.
• Build and flash the BLE application using west/CMake and apply appropriate Device Tree overlays for Bluetooth-enabled hardware.

Who Should Read This

Embedded firmware engineers and developers with some RTOS or Zephyr exposure who want to add BLE peripheral functionality and custom GATT services to MCU-based products.

Still RelevantIntermediate

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