嵌入式Linux下LCD界面应用程序开发

介绍了MPC823e的LCD控制器。根据10.16cm(4in)STN-LCDLCBA7T211W显示模块的时序要求设计了该LCD显示模块与MPC823eLCD控制器之间的硬件接口电路,并开发了LCBA7T211W在嵌入式Linux下的显示驱动程序。在此基础上,设计了嵌入式Linux下LCD的界面菜单应用程序,采用相应的10.16cm触摸屏对它进行操作。实验结果表明,此LCD显示系统可在该LCD显示模块上显示清晰稳定的画面,所开发的界面应用程序界面友好,操作方便,对界面菜单应用程序进行二次开发后可执行用户自定义的菜单选项功能,便于此LCD显示系统的实际应用。因此,该LCD显示系统可作为多种嵌入式工业控制领域的输入输出设备。

Design of LCD Interface Application Program Based on Embedded Linux

This paper introduces MPC823e LCD controller. According to the timing demand of the 10.16 cm(4 in) STN-LCD LCBA7T211W display module, the hardware interface circuit between LCBA7T211W and MPC823e LCD controller is designed. Embedded Linux display driver program of LCBA7T211W is also developed. On the basis of it, LCD interface menu application program based on embedded Linux is designed. The corresponding 10.16 cm Touch Panel is utilized to operate the application program. The experiment results indicate that the whole LCD display system can display clear and stable pictures on this LCD display module, and the interface application program on the LCD is user-friendly and convenient to manipulate. The interface menu application program can be redesigned and can operate the special functions, and it is easier to take this LCD display system into practical application. Therefore, this LCD display system can be used as the input and output control device in many embedded industrial control fields.