Data Transmission And Interaction Technology For Embedded Systems

With the rapid development of embedded information technology,the requirements of data interaction between and within various embedded systems are becoming more and more frequent.This thesis studies the data transmission and interaction technology for embedded system,in order to meet the needs of real-time big data interaction,universality and scalability.This thesis proposes and designs a high-performance embedded data interaction platform based on FPGA,which realizes the high-performance data interaction between the internal processor of the platform and each distributed module,as well as the external high-speed data transmission of the platform.The main tasks are as follows:1.Based on the RocketoIO interface,the external data interaction mode of the platform is designed.The interaction protocol can be customized freely according to different application requirements,and the verification mechanism is developed to make the system flexible and secure.2.Using the AXI protocol,the DDR data storage read-write logic in the module is written.Its good scalability can meet the design requirements of high throughput and large capacity scenarios.3.Based on PCI Express bus,the DMA interaction mechanism between the processor and the distributed module is designed,which realizes the stable and low delay data transmission function.The dynamic register can modify the real-time parameters of the system.4.The interconnection module of the whole system is designed and realized,the data between different clock domains is controlled coordinately,and the data packet function between different protocols is completed.In this thesis,the function of the system is verified by the simulation experiment and the actual hardware platform test:the result shows that the transmission efficiency with verification can approach the theoretical value when the data is exchanged between platforms;the DDR read-write storage bandwidth within the processing module can reach 8GB;when the transmission between the hardware module and the processor,the DMA interaction can complete the transmission of Gilbert level,with lower delay,and can support Continuous and efficient packet data stream transmission of the whole system.The test results verify the correctness of the system function and design scheme.