bea9c6e88d
Put the kernel overview at the top level of the kernel documentation and make it visible immediatly when browsing the kernel docs. Signed-off-by: Anas Nashif <anas.nashif@intel.com>
35 lines
1.3 KiB
ReStructuredText
35 lines
1.3 KiB
ReStructuredText
.. _kernel:
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Kernel Services
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###############
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The Zephyr kernel lies at the heart of every Zephyr application. It provides
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a low footprint, high performance, multi-threaded execution environment
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with a rich set of available features. The rest of the Zephyr ecosystem,
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including device drivers, networking stack, and application-specific code,
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uses the kernel's features to create a complete application.
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The configurable nature of the kernel allows you to incorporate only those
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features needed by your application, making it ideal for systems with limited
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amounts of memory (as little as 2 KB!) or with simple multi-threading
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requirements (such as a set of interrupt handlers and a single background task).
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Examples of such systems include: embedded sensor hubs, environmental sensors,
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simple LED wearable, and store inventory tags.
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Applications requiring more memory (50 to 900 KB), multiple communication
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devices (like WiFi and Bluetooth Low Energy), and complex multi-threading,
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can also be developed using the Zephyr kernel. Examples of such systems
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include: fitness wearables, smart watches, and IoT wireless gateways.
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.. toctree::
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:maxdepth: 2
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threads/threads.rst
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timing/timing.rst
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memory/memory.rst
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synchronization/synchronization.rst
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data_passing/data_passing.rst
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usermode/usermode.rst
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other/other.rst
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