ARM与DSP的SPI通信设计实现

Communication Between ARM and DSP Through SPI Bus

提出一种测量仪器的多处理机分布式控制方案,并对DSP与移植了Linux操作系统的ARM之间SPI通信设计进行了着重阐述。对于这样的特定系统,首先要完成Linux下的SPI驱动程序开发,然后才能进行ARM和DSP下的应用程序开发。对这几个方面进行了详细介绍,给出了一种ARM与DSP通信的通信协议,并基于此协议实现了ARM与DSP的SPI通信。

This paper brings up a distributed control method based on multiple processors of surveying instruments,and puts the emphasis on discussing the communication between DSP and ARM with a Linux OS.For the specific system,to design the SPI device driver of embedded Linux is the first step,then complicate the applicated program in both ARM and DSP.All these parts are described in detail in this paper,and a communication protocol between ARM and DSP is given,based which the ARM and DSP communicate through SPI bus is accomplished.