# Functions Source: [https://docs.qualcomm.com/doc/80-58740-4/topic/functions.html](https://docs.qualcomm.com/doc/80-58740-4/topic/functions.html) BLE stack uses Zephyr BLE stack. For API, please refer to [zephyr bluetooth api](https://docs.zephyrproject.org/2.1.0/). **Parent Topic:** [BLE](https://docs.qualcomm.com/doc/80-58740-4/topic/ble.html) Last Published: Feb 10, 2025 [Previous Topic CLI commands](https://docs.qualcomm.com/bundle/publicresource/80-58740-4/topics/cli-commands.md) [Next Topic BLE\_MESH](https://docs.qualcomm.com/bundle/publicresource/80-58740-4/topics/ble-mesh.md)