| .. _overview_v2: |
| |
| Overview |
| ######## |
| |
| The Zephyr kernel lies at the heart of every Zephyr application. It provides |
| a low footprint, high performance, multi-threaded execution environment |
| with a rich set of available features. The rest of the Zephyr ecosystem, |
| including device drivers, networking stack, and application-specific code, |
| uses the kernel's features to create a complete application. |
| |
| The configurable nature of the kernel allows you to incorporate only those |
| features needed by your application, making it ideal for systems with limited |
| amounts of memory (as little as 2 KB!) or with simple multi-threading |
| requirements (such as a set of interrupt handlers and a single background task). |
| Examples of such systems include: embedded sensor hubs, environmental sensors, |
| simple LED wearable, and store inventory tags. |
| |
| Applications requiring more memory (50 to 900 KB), multiple communication |
| devices (like WiFi and Bluetooth Low Energy), and complex multi-threading, |
| can also be developed using the Zephyr kernel. Examples of such systems |
| include: fitness wearables, smart watches, and IoT wireless gateways. |
| |
| .. toctree:: |
| :maxdepth: 1 |
| |
| source_tree.rst |
