DSP高速处理系统与PC机并行通信的实现

Realization of Parallel Communication between PC and DSP High-Speed Processing System

TMS320C32具有存储空间大、运算精度高的特点,但文件管理和图形用户界面的实现比较困难。结合该DSP数据的快速处理功能和PC机良好的用户操作性能,能够开发出使用方便、同时又具有高速有效处理数据能力的DSP处理系统。二者之间命令发送和数据的传输通过微机打印口实现。DSP目标板每次以8位数据方式接收微机的数据,以4位数据方式向微机发送数据,并利用应答的方式,决定何时发送数据和通知对方可以发送数据,保证了数据传输的通畅。在文章最后,给出了DSP发送数据的汇编代码和PC机接收数据的C语言代码。

TMS320C32 can process data in high speed and high precision with large memory. But it is difficult to manage files and realize user interface with DSP. Combing the capability of high speed processing of DSP with the characteristic of good maneuverability, can design a DSP processing system, which can process data with high efficiencies and high precision and can be used conveniently. Using Parallel Communication of PC, Using Parallel Communication of PC,can transmit communicate data and command between PC and DSP. DSP receives a 8 bits data from PC every times, and sends a 4 bits data to PC every time. At the same time, they use respondent mode to determine when to send data and inform the other when to send data, which mode can ensure communicate data fluency. The program of C language to receive and compile language to send is given at last.