| The application of the embedded system is very extensive. As a powerful tool, it's used to upgrade technology in kinds of realm. Thanks to great real time and network power of the embedded system, people could improve the performance of MAC system, and solve a lot of problems by applying it. Wireless communication is convenient to be employed without any wire , so it's fit for mobile measuring and controlling object, as well as the situation that difficult or impossible to lay line. So, an embedded MAC system based on real-time and multi-task is designed to realize multi SCM wireless measuring and controlling.In this system, real-time MAC OS μC/OS-II is replanted to single-chip SPCE061 A, with the SCM build an embedded flat form. The system is composed of industrial computer, SPCE061A single-chips and radio modem modules BH-1. Among them, SPCE061A sample data, receive instruction from host-computer and control implement. Industrial computer works as control centre and communicates with single-chip by MSComm. It needs to program in single-chip to establish APP tasks.In addition an analysis of task-switch arithmetic and system designing, there are some new ideas about ameliorating the system. At the same time, the paper provides a minimum system based on SPCE061A. The system has simple and practical circuit, and it's convenient for using in practical situation. |
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