Research On RTX51 Applied Technology Aiming At Design Of Embedded System

As the increase of complexity and integration during the modem industrial manufacture process, the embedded system has been being progressing rapidly. In combination with the improved design of the embedded hardware system, the introduction of embedded Real-Time Operating System(RTOS) in the embedded software system, can not only facilitate the multi-task, such as measuring, data collecting, telecommunication, control etc., but also meet the real-time, reliability and stability requirements of the embedded system.First of all, the kernel of RTX51--one Embedded Real-Time Operating System(ERTOS) is analyzed. And then, the methods to design the application software and to guarantee real-time and reliability of the system based on RTX51 are studied. Finally, the design process of automatic testing system on the arc duration of temperature switch based on RTX51 is presented.Three principles of task decomposition: to place all the access to one single peripheral in one single task, to partition the task for improvement of real-time, and to apply the "decoupling rules" in software engineer to task decomposition, are given. Practice has proved that these three principles of task decomposition are effective. Based on this, in the perspective of practicality, the programming guideline for application software based on RTX51 real-time operating system(RTOS) is presented.Practical application reveals that, the introduction of RTX51--one Embedded Real-Time Operating System(ERTOS), as one operation and development platform for micro-controller application software, can greatly facilitate developing the application software and satisfy the real-time, reliability and stability requirements of the embedded system.