This is the documentation for the latest (master) development branch of Zephyr. If you are looking for the documentation of previous releases, use the drop-down menu on the left and select the desired version.

OS Abstraction

OS abstraction layers (OSAL) provide wrapper function APIs that encapsulate common system functions offered by any operating system. These APIs make it easier and quicker to develop for, and port code to multiple software and hardware platforms.

These sections describe the software and hardware abstraction layers supported by the Zephyr RTOS.