专用电源嵌入式控制系统DSP端口问题研究  

Research on DSP Port Problem of Special Power Embedded Control System

作　　者：王伟强[1] 赵楠[1] 宋英利 WANG Weiqiang;ZHAO Nan;SONG Yingli(Research Institute of Physical and Chemical Engineering of Nuclear Industry,Tianjin 300180,China)

机构地区：[1]核工业理化工程研究院,天津300180

出　　处：《电气传动》2021年第18期54-58,共5页Electric Drive

摘　　要：针对目前被广泛应用在电力电子和电源控制领域的TMS320F28335 DSP,结合在开发专用电源嵌入式控制系统过程中发现的GPIO端口问题开展研究工作。对产生的问题进行了复现试验,发现在使用同一分组GPIO的情况下,通过GPxDAT寄存器控制程序指令无法控制2个及以上端口产生相应动作的问题。经分析提出导致问题产生的3种假设并进行相应的验证试验,试验结果表明第3种假设情况为产生问题的原因。在此基础上提出了3种基于软件编程的解决方案,并对解决方案进行了验证。最后,对TMS320F28x系列其他5种常用型号的DSP进行拓展试验,均发现了相似的问题。采用提出的3种解决方案进行测试,结果证明提出的解决方案都是有效可行的。Aiming at the TMS320F28335 DSP,which is currently widely used in the field of power electronics and power supply control,the problem of general-purpose input/output(GPIO)port found in the development of embedded control system for special power supply was studied.Through the repetition tests,it was found that the GPxDAT register control program instruction can not control two or more ports to emerge corresponding actions when using the same GPIO packet.Three hypotheses were conjectured after analysis,and the third hypothesis was verified as the cause of the problem through verification tests.Three solutions based on software programming were proposed,and the solutions were verified.Similar problem was found in other five types of TMS320F28x series for DSP,and three solutions proposed were tested.The results show that the solutions proposed are effective and feasible.

关 键 词：数字信号处理器 嵌入式控制系统 通用输入输出端口 串行外设接口 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]