FPGA可重构仪器USB通信接口的设计与实现

Design and Implementation of USB Communication Interface of FPGA Reconstructed Instrument

通过传统设计方法开发USB通信接口实现FPGA与上位机之间的数据传输,需要开发人员熟练掌握USB协议、驱动程序编程以及固件程序编程等多方面的内容,开发难度较大.基于FPGA可重构仪器数据传输的需要,通过对FT245BL芯片工作原理的分析,设计并开发了基于FT245BL的USB通信接口及上位机应用程序,实现了数据传输的功能.相比传统设计方法,采用该设计方案可简化开发过程,从而降低开发难度、加快开发进程.经测试验证,该通信接口在数据传输过程中迅速、准确,对实现FPGA与计算机间的数据传输具有较强的通用性和实用性.

The development of the USB communication interface using the traditional design method which realizes data transmission between FPGA and host computer is complicated for developers,because the traditional way requires the developers to be proficient in many aspects,such as USB protocol,drivers,and firmware program.Based on the needs of FPGA reconstructed instrument data transmission,an FT245BL-based USB communication interface and a host computer application program were developed by analyzing the working principle of the FT245BL chip realized the function of data transmission.Compared with the traditional design method,the design method can simplify the development process,thereby reducing the development difficulty and speeding up the development process.Finally,the test validates that the communication interface is fast and accurate in the process of data transmission and has strong versatility and practicability for data transmission between FPGA and computer.