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文章提出了一种基于NiosII处理器的以太网口显示屏系统的软硬件实现方案,以取代常见的串口显示屏系统。该方案以一片FPGA为核心,其中设计了NiosII处理器、LCD显示控制器、以太网接口模块等模块,配合外围的SDRAM存储器、以太网接口芯片、显示屏构成整个硬件设计。软件上,接收上位机发送的以太网协议数据包,在显示屏上显示相应图形。该以太网口显示屏系统,克服了与上位机的连接距离限制,具有较高显示分辨率、显示数据更新较快的特点,有较高应用价值。
The article presents a hardware and software implementation of the Ethernet port display system based on the NiosII processor to replace the common serial port display system. The program to a FPGA as the core, which designed a NiosII processor, LCD display controller, Ethernet interface module module, with the external SDRAM memory, Ethernet interface chip, the display constitutes the entire hardware design. Software, receive the host computer to send Ethernet protocol packets, the corresponding graphics on the display. The Ethernet port display system overcomes the limitation of the connection distance with the host computer, has a higher display resolution, and has faster display data update and has higher application value.