Design And Implementation Of Display Driver For LCD Screen Based On ARM

With the rapid development of digital information technology and network technology, embedded systems technology has been widely applied to various aspects of our life. Embedded systems have rather strong interactivity and LCD is especially important for Chinese characters as display equipment, but many teaching materials on the development and application of embedded systems only covered the initialization and testing programming about LCD screen without further application programming. Due to above reasons, this paper focuses on design and realized of the display driver for LCD screen in order to improve LCD screen's display efficiency for Chinese characters.Some tasks are completed with the development of the in-depth study as follow:At First, three commonly used embedded operating systems are analyzed and compared, and an opinion is given on whether an operating system is needed during the development of a project. Considering the practical application of this dissertation, bootloader rather than operating system is used.Then, boundary scan technology is selected to be applied into the development of practical system based on the analysis and comparison of traditional debugging methods of SCM with ARM boundary scan technology after the hardware development system is determined.Again, the 44 binit.s'initialization program is analyzed and designed because some necessary initialization code must be added to C language program before its running.At last, the LCD display of Chinese characters is realized respectively by reading fonts database and reading fonts model and good results are achieved.In sum, the procedure of utilizing ARM processor to realize LCD display of Chinese character is illustrated and the process of application development for ARM processor is explained in detail, which are helpful to the study, application and development of ARM processor.