Design Method for the Achievement of Multiple Types Interfaces Data Transmission Based on ARM+FPGA
[Purposes]There are many types of data transmission interfaces between the antenna real-time angle measurement device and the antenna control unit,circulator,signal processing,simulator and other external devices.In order to meet these interfaces,high-speed,accurate and non-delay data transmission is completed in parallel without interference.[Methods]The hardware circuit adopts ARM + FPGA archi-tecture,and the ARM and FPGA are logically connected by bus through pin interface such as address line,data line,read-write permission,chip selection,interrupt signal and so on.The main control program is implemented by ARM processor,developed by Keil software and designed by C language.FPGA uses Quar-tus II development environment,VHDL language design,and uses state machine and FIFO technology to achieve timing,data,signal output design.[Findings]The design method not only meets the requirements of high speed rate and real-time of parallel transmission of multiple types of data interfaces,but also has scalability.[Conclusions]The method has been applied in the measurement and control products,and the application effect is remarkable.
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