摘要
介绍了基于Nios Ⅱ的多功能数码相框的实现。系统基于Nios Ⅱ处理器,设计用户自定义模块,构建了灵活性高、可重配置的SoPC系统。设计自定义模块控制LCM显示;采用流水线方式设计JPEG解码自定义模块以提高解码效率;根据SD协议设计SD卡控制器扩展SD卡。实现了FAT16文件系统,便于对SD卡进行文件管理及多平台上的数据交换,并使用μC/OS-Ⅱ操作系统简化软件设计复杂度、提高系统稳定性。最终实现可播放音频并能显示、缩放、旋转图像且带有图像切换特效的多功能数码相框。
The muhifunction digital photo frame introduced in this paper is based on the technique of Nios II. The system, based on Nios II CPU,the SoPC system with reconfigurability and high flexibility has been customized by taking advantages of the softcore features of Nios II CPU and custom modules. Custom modules have been designed for display controlling, JPEG decoder with pipeline have been designed for higher decoding efficiency, and the SD card controller based on SD protocol has been designed for supporting SD cards. FAT16 file system has been achieved for file managing and convenience to change data with other platforms, μC/OS-II operating system has been embedded for simplifying system software design and improving stability of the system. A multifunction digital photo frame with function of audio playing, and displaying, zooming, rotating and switching effects of photos has been achieved.
出处
《电子技术应用》
北大核心
2012年第3期16-19,共4页
Application of Electronic Technique
基金
"211工程"三期创新人才培养计划建设项目(No.S-09102)
重庆大学研究生创新团队(QGSS2011065)
