A Method of Subsection Receiving with Frame Synchronization Based on DMA

2013 Third International Conference on Instrumentation, Measurement, Computer, Communication and Control Pub Date : 2013-09-21 DOI:10.1109/IMCCC.2013.57

Ye Weidong, Li Keyi

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Abstract

This paper analyzes some traditional design ideas about serial receiving program. For their shortcomings, a method of subsection receiving with frame synchronization(SRFS) based on DMA is proposed. The main idea of this method is to encapsulate the communication data into a frame with the specified structure, then divide a data frame receiving into several specified segments and make receiving process of every segment to match a certain execution state of receiving algorithm. Meanwhile, this method utilizes the software queue to separate data receiving from data processing. Finally, this paper conducts a compared experiment on a hardware platform of STM32F103RBT6, and the result indicates that the proposed method has prominent performance on suitability, real-time, reliability and so on. Besides, it solves the problem faced by receiving variable-length data with DMA. In a word, the method in this paper can be applied to embedded system with serial communication which demands large amounts of data transmission volume, high-speed communication, strong real-time and reliability.

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基于DMA的帧同步分段接收方法

本文分析了串行接收程序的一些传统设计思想。针对它们的不足，提出了一种基于DMA的分段帧同步接收(SRFS)方法。该方法的主要思想是将通信数据封装成具有指定结构的帧，然后将接收数据帧划分为几个指定的段，并使每个段的接收过程与接收算法的某个执行状态相匹配。同时，该方法利用软件队列实现数据接收与处理的分离。最后，在STM32F103RBT6硬件平台上进行了对比实验，结果表明，本文提出的方法在适用性、实时性、可靠性等方面具有突出的性能。此外，它还解决了DMA接收变长数据的问题。总之，本文的方法可以应用于对数据传输量大、通信速度快、实时性和可靠性要求高的串行通信嵌入式系统。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

2013 Third International Conference on Instrumentation, Measurement, Computer, Communication and Control

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