基于双口存储器的双机通信软件设计与实现  

Design and Implementation of a Dual-machine Communication SoftwareBased on Dual-port Memory

作　　者：朱守园 ZHU Shouyuan(AVICAS Generic Technology CO,LTD,Yangzhou,225000,China)

机构地区：[1]中航机载系统共性技术有限公司,江苏扬州225000

出　　处：《长江信息通信》2022年第4期57-59,共3页Changjiang Information & Communications

摘　　要：设计了一种双机通信软件,采用PowerPC作为计算单元,负责系统的控制和数据的计算,DSP作为总线数据采集单元,负责总线数据的采集和传输,PowerPC和DSP之间通过双口存储器进行通信。该软件包括命令通信和数据通信,命令通信部分由PowerPC作为控制方,向DSP发送命令,DSP接收并响应命令;数据通信部分由DSP负责将PowerPC的数据通过总线发送给外部设备,并且将外部设备的总线数据接收回来发送给PowerPC。该双机通信软件设计简单,功能明确,满足双机通信要求。A dual-machine communication software is designed and demonstrated in this paper.As the computation module,the PowerPC carries out the system-controlling and data-computing functions,while the DSP part,served as the data-acquisition module,takes charge of the data sampling and transmitting on the Bus.The communication between PowerPC and DSP is realized by the dual-port memory.The designed software contains two communication parts.One is the command communication,which is transmitted to the DSP module from the PowerPC controller,and the DSP module responses the received command.The other is the data communication part,in which the data from PowerPC is sent to the external device by DSP through Bus.Meanwhile the received bus-data from the external device is sent to PowerPC by DSP.The proposed dual-machine communication software owns simple design and definite functions,and can meet the dual-machine communication requirement.

关 键 词：POWERPC DSP 双口存储器 RS422 ARINC429 

分 类 号：TP311[自动化与计算机技术—计算机软件与理论]