RTC模块在DSP系统中的应用与实现  

Application and Realization of RTC Module in DSP System

作　　者：张楠 ZHANG Nan(School of Electronic Engineering,Xi’an Petroleum University,Xi’an 710065,China)

机构地区：[1]西安石油大学电子工程学院,陕西西安710065

出　　处：《仪表技术》2020年第10期26-28,共3页Instrumentation Technology

摘　　要：C2000系列DSP被广泛应用在工业控制、航空航天等多个领域。在这些应用中,实时时间的获取显得尤为重要,因为精确的时间可以增强系统整体的实时性,提高系统的工作效率。虽然C2000系列DSP外设较为丰富,但是其片内并没有实时时钟模块。提出了一种基于德州仪器(TI)的TMS320F28335型DSP的实时时钟系统设计方法。以该DSP型作为主控芯片,通过外扩基于I^2C通信模式的实时时钟芯片,并结合DSP最小系统的其他必要组成部分,构建一种基于TMS320F28335的实时时钟系统。经实验测试,该系统的实时时钟部分可以自动行使时钟万年历作用,对CPU提供有效可靠的实时时间,为DSP的后续工作与数据处理奠定时间基础。Series C2000 DSP is widely used in many fields such as industrial control and aerospace.In these applications,the real-time acquisition is particularly important,because accurate time can enhance the overall real-time performance of the system and improve the efficiency of the system.Although the peripherals of the series C2000 DSP are relatively abundant,there is no real-time clock module on the chip.Therefore,this paper proposes a method of designing the real-time clock system based on Texas Instruments(TI)TMS320 F28335 DSP.A real-time clock system based on the TMS320 F28335 chip is constructed by taking this DSP type as the main control chip,expanding the real-time clock chip based on the I^2C communication mode,and combining other necessary components of the DSP minimum system.After experimental tests,the real-time clock part of the system can automatically use the clock perpetual calendar function,provide effective and reliable real-time time to the CPU,and lay a time foundation for the follow-up work and data processing of the DSP.

关 键 词：数字信号处理器 实时时钟 I^2C通信 万年历 

分 类 号：TP216[自动化与计算机技术—检测技术与自动化装置]