Research On Data Transmission Technology Of Wireless JTAG Programmer

With the rapid development of information and signal processing technology and VLSL technology,programmable logic devices such as CPLDs and FPGAs can solve the problem of full-custom circuits and users can program and configure them according to their application requirements,they are widely used in Communcations networks,high-speed signal processing,instrumentation,industrial control and other fields.AS an important tool for programming and modulation,the development of CPLDs and FPGAs prog rammer more and more get the attention of engineers.At present the market mainstream USB-based programmer is expensive,having single function,and due to the use of cable download,the programming download distance is limited.The design scheme of wireless JTAG programming is put forward based on programming principle analysis of the IEEE1149.1 standard USB-blaster programmer.This paper focuses on the design of data transmission system of wireless program based on WIFI.This paper describes the related technologies of the wireless JTAG programmer data transmission system and achieve the on-line remote control configuration parameters of the programmer design goals based on WIFI programmer combined with embedded decices.In this wireless data transmission system using server-side modules and client modules design,and the two data transmission module use STM32 to make the central processor and integrate Lw IP network protocol and 802.11 wireless LAN protocal to achieve the WI FI connection and establish the TCP server,and realizes the accurate wireless transmission,it designs JTAG protocol stata in the two modules at the same time,and eventually be able to effectively and accurately complete wireless transmission data of JTAG programmer.