基于嵌入式操作系统的数字音频播放器优化控制  

Digital Audio Player Optimization Control Based on Embedded Operating System

作　　者：肖雪峰[1] 肖伸平[1] 彭琼林[1] 闫林生[1] 

机构地区：[1]湖南工业大学电气与信息工程学院,湖南株洲412000

出　　处：《计算技术与自动化》2013年第1期117-120,共4页Computing Technology and Automation

基　　金：住房和城乡建设部重大专项项目子课题(财建[2010]520-4);湖南省自然科学基金资助项目(10JJ6098)

摘　　要：当前,数字音频技术快速发展,高速性和高性能成为数字音频处理技术面临的一个重要问题,结合ARM处理器和uC/OS-II操作系统能够全方面的提高其处理速度和性能。以32位的STM32处理器作为数字音频播放系统的控制和管理单元,控制文件的读取,芯片的解码以及LCD显示。通过ARM7处理器上移植uC/OS-II操作系统来实现统一的任务调度和外围设备管理,能更加优化控制处理器的处理机制,且任务的优先级的设定,解决了各个任务之间的冲突问题,有效的提高处理速度和性能。At present, digital audio technology have a high--speed development, the high-speed and high performance have becomes a very important problem of digital audio processing technology, combined with the ARM processor and uC/ OS-II operating system can fully improve the processing speed and performance. As the control and management unit of dig- ital audio system, STM32 32--bit processor can control the reads of files, the decoding of chips and LCD display. Task scheduling and peripheral equipment management can be achieved unified through the transplantation of the uC/OS-II operat- ing system in ARM7 processor ,which makes the processing mechanism of the processor more optimal and sets the priority task, so the conflict between each task can be solved and the processing speed and performance can be improve effectively.

关 键 词：ARM UC OS-II 数字音频 移植 

分 类 号：TP316[自动化与计算机技术—计算机软件与理论]