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.

• POSIX Support
• CMSIS RTOS v1
• CMSIS RTOS v2