摘要
为了优化工业显示屏,提出一种利用CAN总线的优势来优化工业显示屏控制器的方法。该控制器创新点在于以CAN总线作为传输,控制键和数字输入键的命令集经CAN总线传输到STM32单片机,STM32单片机运算、转换数据后经内部FSMC接口发送给FPGA,FPGA控制数据发送到SDRAM,显示屏由FPGA控制取读SDRAM内部的数据并显示,最大通信距离可达10km,通信速率可达1 Mbit/s。经实验验证,能提高传输速率并且能支持多个设备和高分辨率显示。
In order to optimize industry display,we proposed a method of taking the advantages of CAN bus to optimize the performance of the industry display controller with high resolution power.The innovation is the controller uses CAN bus to transport data,the commands from the control key and digital input keys are transported to the STM32 microcontroller,then STM32 microcontroller transports data to FPGA by internal FSMC interface after operation and transformation.FPGA sends the data to SDRAM and the display is controlled by the data that FPGA takes and reads from SDRAM.The farthest distance of communication can reach 10 km and the speed can reach 1 Mbit/s.The experiments prove that the controller can improves the transmission speed and supports multiple devices and high-resolution compared with common serial screen.
出处
《电子器件》
CAS
北大核心
2012年第3期361-365,共5页
Chinese Journal of Electron Devices
基金
浙江省大学生科技创新项目(2011R407010)
