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为解决LED显示屏视频控制卡不能脱离PC机独立工作的局限性,设计了一种交通诱导屏脱机控制卡.系统以ARM7芯片S3C44B0X为控制核心,完成与PC机的100M UDP网络通信及显示信息的存储和更新;在FPGA的辅助下,采用双体RAM显示控制实现显示屏的动态扫描和刷新.该系统在实际的应用中得到验证,取得了良好的效果.
In order to solve the limitation that the LED display video control card can not work independently from the PC, a traffic inducing screen offline control card is designed. The system takes ARM7 chip S3C44B0X as the control core to complete communication with the 100M UDP network of PC and display The storage and update of information, and the dual-body RAM display control is used to realize the dynamic scanning and refreshing of the display with the aid of FPGA.The system has been verified in practical application and has achieved good results.