基于USB 2.0 的农田数据采集系统固件程序开发

介绍了基于USB2.0的农田数据采集系统中主控芯片EZ-USB FX2利用可编程控制接口GPIF,与外设进行高速数据传输的基本机制和软配置波形描述符的实现原理;详细阐述了EZ-USB FX2固件程序开发框架;最后,给出了据此进行基于GPIF的固件设计基本方法和实例。     

Realization of high speed transmission system of ICT based on USB 2.0

Aiming at solving the problems existing in the traditional data transmission system of Industrial Computerized Tomography (ICT), which usually uses PCI and ISA bus, resulting in high price, poor scalability, low transmission rate, complex fixing and complex routing, and cannot fulfill the demand for research and production, a set of ICT based USB 2.0 high speed data transmission system model is proposed. The system takes a FPGA chip as core logic control module, which controls communications with the USB chipset. The whole hardware designation is described in terms of the performance of reliable data transmission, high speed and stability. Experimental results show that the proposed method improves the system’〖KG*8〗s stability and reliability. It can satisfy the requirements of ICT transmission .