DSP/BIOS下VOIP可视电话的系统调度与控制研究

Schedule and Control of VOIP Video Telephone on DSP/BIOS

在VOIP可视电话系统中,任务、中断及相互间的协调与管理是系统功能实现与可靠性的重要瓶颈。开发板采用TMS320DM642和ARM9构成双处理器结构。首先描述了DSP/BIOS实时操作系统下VOIP可视电话的系统调度设计,然后进一步阐述了利用DSP与ARM9间的HPI接口设计完成对系统控制和数据的操作管理。实践结果表明,该方法解决了系统复杂的调度与控制关系,提高了系统的执行效率。

In VOIP video telephone system, it is very important for the realization and reliability to cooperate and correspond among tasks and interrupts. The system is made up of double processors which are TMS320DM642 and ARM9. Firstly, the schedule of VOIP video telephone on real time operating system DSP/BIOS is described. And then, the control and management of system that is achieved by HPI Interface design between DSP and ARM9 is introduced in detail. In practice, it has solved the complex relations among scheduling and controlling, and it makes the system more efficient.