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本文利用NiosII软核在现场编程逻辑门阵列(FPGA)芯片中实现用户定制的处理器,以及处理器NiosII与液晶显示模块的接口和图形显示的编程技术;采用了Bresenham画线算法在液晶显示屏上可以显示任意两点间的直线,并且给出了画点和线的NiosII应用程序,实现了嵌入式NiosII软核的可编程单芯片系统(SOPC)和液晶显示模块中图形显示。并以240×128点阵型液晶显示模块MGL240128T为例,研究了嵌入式NiosII软核处理器与液晶显示模块的接口和图形显示技术。经实验表明该系统具有高集成度、高可靠性、较好的可移植性和扩展。
In this paper, NiosII soft core in the field programmable logic gate array (FPGA) chip to achieve user-defined processor, and the processor NiosII and LCD module interface and graphical display programming techniques; using Bresenham line drawing algorithm in the liquid crystal display It can display straight lines between any two points, and gives NiosII applications for drawing points and lines. It realizes the graphical display of embedded NiosII soft-core programmable single-chip system (SOPC) and liquid crystal display module. Taking 240 × 128 dot matrix liquid crystal display module MGL240128T as an example, the interface and graphic display technology of embedded NiosII soft - core processor and liquid crystal display module are studied. The experiment shows that the system has high integration, high reliability, good portability and expansion.