The Embedded Communication System group (ECS Group) dispose on its own developed Execution Framework (XF). This actual version is not adapted for a real- time operating system (OS) such as Free RTOS, Zephir-OS or similar. This Bachelor thesis has for purpose to develop, test and document an XF than can be put on the top of an OS or RTOS. The interface of the XF should not depend on the used OS it must therefore implement an operating system abstraction layer (OSAL) This document presents the specifications of the project, a brief description of the actual execution framework, an analysis of the Free RTOS primitives and a first solution to mix them. Then will come the development of the project and the tests realized
