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ARM7微处理器LPC2132具有高的集成度和高性价比,很适合于嵌入式系统设计,本文设计了LPC2132与LCM的硬件接口,在软件接口中,提出用汇编语言文件存储汉字点阵信息,而在C语言文件中调用汉字点阵信息的混合编程方法,提高了资源利用效率,针对常见液晶显示刷新速度慢的现象,提出了提高液晶显示刷新速度的方法。提出了用时钟寄存器保存系统参数,从而使LPC2132具有数据掉电保存功能,并介绍了I2C总线应用技术等。
ARM7 microprocessor LPC2132 with high integration and cost-effective, it is suitable for embedded system design, this paper designed a LPC2132 and LCM hardware interface, the software interface, the assembly language file is proposed to store Chinese dot-matrix information, The hybrid programming method of calling Chinese dot-matrix information in C language file improves the utilization efficiency of resources. Aiming at the phenomenon that common liquid crystal display refreshing is slow, a method of improving the refreshing speed of liquid crystal display is proposed. Proposed to use the clock register to save the system parameters, so that LPC2132 has a data power-down save function, and introduced the I2C bus application technology.