摘要
基于嵌入式的测控设备在扩展点阵液晶屏时需要使用液晶显示控制器,汉字字库的组织和各种图形的显示也是必做的工作。结合嵌入式微控制器LPC2148和S1D13305液晶控制器的显示模块,是一种较为实用的方法。设计了相应的接口电路和对比度数字调节等电路,将液晶屏设置为字符、图形和光标3层"逻辑或"叠加的图形方式,将16和24两种点阵字库存储于LPC2148的Flash内,设计了显示驱动程序,字符输出、图形绘制、光标管理及日历时钟管理的子程序库。实现了单色320×240点阵液晶的显示管理。
A LCD controller is needed when a control and measure device based on embedded MCU expands lattice LCD display. It is necessary to arrange Chinese character mask database and draw graph. It should be an available method that combining embedded MCU LPC2148 and LCD display unit which based on LCD controller S1D13305. In this paper,the interface circuit,LCD digital con-trast adjustment circuit,etc. was given. LCD screen was set to 3 graphics layers combining in logic OR mode. Character,graph and cursor pattern...
出处
《微计算机信息》
北大核心
2008年第5期28-30,共3页
Control & Automation
