摘要
提出了一种EDMA多通道传输链乒乓结构的多路数据传输方法,介绍了EDMA3控制器的控制原理,论述了该方法的实现过程,并在基于TMS320C6455的图像处理系统中实现了3路数据的同步传输。实验与分析结果表明,相对于多个通道分别传输的方法,该方法传输效率提高了18%,CPU资源节省率达到66%,而且数据传输更稳定可靠。
The paper proposes an approach which adopts the technology of multi-channel EDMA transfer chaining with ping- pong buffering for data transmission. Firstly, the configuration of EDMA3 controller is presented. Then the implementation process of the method is discussed. The method is verified by the experiment, in which three-channel image data is transferred synchronously to image processing system based on TMS320C6455 DSP. The result shows that, compared with the mode of respective data trans- mission with multi-channel, the efficiency of the data transmission would be improved by 18%, and 66% CPU resource can be saved. Furthermore, the data transmission via the proposed method is more safe and reliable.
出处
《电子技术应用》
北大核心
2014年第4期25-28,共4页
Application of Electronic Technique
