嵌入式系统中TFT液晶软硬件设计

Software and hardware design of TFT-LCD in embedded system

给出S3C2410嵌入式系统上TFT-LCD的工作原理、硬件结构和软件设计。TFT-LCD作为该嵌入式系统的显示设备,在L inux下的驱动程序采用帧缓冲设备来处理与LCD控制器有关的底层命令,程序读取显示缓冲区的数据就可以完成对应用程序图形模式下图形的绘制。通过对系统中软硬件的设计,达到使TFT液晶能够正常显示的目的。详细的软件与硬件设计,可以对嵌入式系统的开发及移植起到一定的指导做用。

The work principle, hardware configuration and software design of the embedded system TFT-LCD are given. TFT-LCD regards as the display device of the embedded system ,its device drivers must be implemented as Linux frame buffer device drivers in addition to those low level operations which only deal with commands provided by LCD controllers. In order to display the graphic which is in the graphic mode of the application software, programmer can get the data from the frame buffer device by receiving. By the design of the software and hardware in embedded system,it can arrive that TFT-LCD can be run normally. Detailed design may supervise explordering and transplant which used in embedded system in future.