嵌入式机器视觉系统中ARM与DSP的数据通信方法  

Data communication method between ARM and DSP in embedded machine vision system

作　　者：毛晓波[1] 刘国栋[1] 陈铁军[1] 黄云峰 

机构地区：[1]郑州大学电气工程学院,河南郑州450001 [2]郑州市供电公司试验所,河南郑州450007

出　　处：《电子设计工程》2010年第10期100-104,共5页Electronic Design Engineering

基　　金：河南省自然科学基金(0611052900);河南省教育厅自然科学研究计划项目(2009A410001);河南省留学人员科技活动择优资助基金(豫人留学函[2007]17号)

摘　　要：为了在嵌入式机器视觉系统中实现ARM处理器S3C2440与DSP处理器TMS320C5402之间的实时数据通信,设计出一种基于主机接口HPI的数据通信方法。阐述了嵌入式机器视觉系统的总体方案,设计了协处理器DSP的HPI接口与ARM主机之间连接的硬件电路,详细描述并分析了HPI的工作原理和各寄存器的作用,给出基于Linux操作系统的驱动程序。实际应用表明,该方法完全能够实现ARM主机实时地读/写DSP处理器内各存储单元的数据,速度可达10 MB/s,满足了嵌入式机器视觉系统的实时性要求。In order to realize real-time data communication between ARM S3C2440 and DSP TMS320C5402, a desigh method, via HPI interface, is proposed. The embedded machine vision system＇s overall scheme is introduced, the circuit of hardware interface is designed, HPI work principle and functions of registers are described in detail, and drivers based on Linux operation system are designed. Practical applications prove that the host computer ARM can access all registers of DSP processor and the maximum transmission rate is 10Mbit/s. It can meet the requirements of embedded machine vision systems in real-time.

关 键 词：嵌入式机器视觉 S3C2440 TMS320C5402 HPI接口 数据通信 

分 类 号：TP242.6[自动化与计算机技术—检测技术与自动化装置]