基于NIOSⅡ的全液晶汽车仪表系统设计

针对液晶图形式仪表必将代替传统的步进电机式指针仪表这一未来汽车仪表的发展趋势，介绍了一种基于NIOSⅡ嵌入式软核处理器和LP064V1TFT彩色液晶的全液晶汽车仪表的设计与实现方法．系统利用SOPCBUIDER配置FPGA硬核，在NIOSⅡ软核中编程控制CAN收发器，接收来自各传感器的数据，解析并转化为对应的图形数据，显示在液晶上．说明了系统的总体设计方案，仪表数据格式和指针式仪表到图形仪表映射的设计思想．设计的全液晶汽车仪表结构简单，指示效果直观，灵活性好．

Design of pure liquid crystal motormeter system based on NIOS Ⅱ

Nccording to the development tendency of motormeter that the traditional pointer meters driven by Step Motor will be surely replaced by the graphic meters displaying on the liquid crystal motormeter in the future, this paper introduced a new design of pure liquid crystal automobile meters based on embedded processor NIOS Ⅱ and LP064V1 TFT color liquid crystal. The SOPC BUIDER was used to configurate the FPGA hard core and the NIOSII soft core was used to control CAN transceiver, receive and analyse the data coming from different sensors, then convert these data into corresponding graphic data which were displayed on the liquid crystal motormeter. The specific implementation schemes of every part, data format and design idea of the mapping between pointer meters and graphic meters were given in this paper. The result shows that the pure liquid crystal motormeter has concise struc- ture, intuitive indication effect and good flexibility.