基于DSP的OLED显示器软硬件设计及实现

Hardware and Software Design and Implementation of OLED Display Based on DSP

给出了一种基于DSP控制的OLED显示屏设计方案。首先针对高速率DSP与慢外设OLED读写数据时序的不匹配,提出了一种更为经济实用的软硬件处理方案。其次针对便携式系统显示信息量大,而CPU内部程序资源有限,提出索引码两级缓存方案。同时有效解决了汉字与字符、常量与变量混合显示的问题。给出了具体的硬件原理图并给出了部分C语言程序。系统实现了多层菜单显示,取得了良好的显示效果,为各种便携式系统显示前端的设计提供参考。

A OLED design proposal based on DSP control was presented. First, a more practical and lowconsuming hardware/software solution was illustrated based on the consideration of time schedule mismatch between the high frequency DSP and the low R/W rate of OLED. Second, because of the huge information volume of the portable system and the limitation of the CPU inner program resource, an index code L2 cache was proposed. Meanwhile, the mixed display of Chinese characters and ASCII, constants and variables were effectively solved. This paper illustrated the specific hardware drawings and parts of the C program. This system has implemented multi-menu with reasonable display effects, providing reference to the front-end designs of various portable systems.