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该文从PC时钟中断,串行中断的关系及中文直接写屏原理入手,分析了串行通讯失败的原因,指出其根源在于中文直接写屏占用了时钟中断。最后,给出了解决的办法。 相似文献
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串行通讯在实际应用中常常需要中断处理,本文介绍了在目前流行的Windows环境下串行通讯后台处理的方法,并给出了实例。 相似文献
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一般在PC机中硬盘的中断优先级最高,访问硬盘的时间又相对较长,如果在访问硬盘时有串行数据发到PC机,PC机就不能及时响应串行通讯口中断。在PC机远程通讯时.通常只用RXD、TXD、GND三报信号线,而不使用联络线。如果串行通讯波特率较高。没着联络线可以阻止外设连续送数据,当硬盘访问结束时,外设可能已发出若干数据,而PC机又无法处理串行通讯接收中断,这样就会造成数据丢失,这在实际中是不允许的,为此本又设计了由8031单片机构成的带有缓冲功能的PC总线串行通讯口。1硬件原理接口板由两大部分组成,一部分是由肌爿单片机… 相似文献
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简述有关IBMPC机异步串行通讯的软,硬件编程特性,以PC机间的串行通讯为例,阐述了中断方式下高速全双工中行通讯TURBOC2.0的实现方法。 相似文献
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该文针对IBMPC及其兼容机的串行通讯口和中断系统结构,提出了在PC上基于RS422口实现时串行远程通讯的技术和解决丢码现象的方法。 相似文献
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林乃强 《自动化与信息工程》1995,(3)
简述有关IBM PC机异步串行通讯的软、硬件编程特性,以PC机间的串行通讯为例,阐述了中断方式下高速全双工串行通讯TURBO G 2.0的实现方法。 相似文献
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本文介绍了MSP430系列FALSH型超低功耗单片机的异步串行通讯,并以土工三轴仪测控系统为例,详细介绍了MSP430系列单片机波特率的计算和中断服务,还给出了串行通讯的硬件电路图。 相似文献
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DSP和PC机的串行通信 总被引:11,自引:2,他引:9
介绍了一种DSP和PC机的串行通信方法,设计了DSP的串行通信接口硬件电路及在此基础上使用中断的方法实现串行通信的工作过程和软件流程,并给出了DSP串行通信接口的程序初始化代码。该通信系统在设备监控系统中得到了成功的应用,取得了满意的效果。 相似文献
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介绍了C Builder 6.0的通信方法和TMS320F2812通信模块,给出了以C Builder 6.0为开发工具的上位机与TMS320F2812之间的通信编程实现。此通信程序已经在电动加载台实验中得到了应用。 相似文献
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比较了实现TMS320x24x系列DSP控制器多机通信的三种方式,分别是通过SCI接口、SPI接口和CAN总线来实现。针对实际课题中六相电机控制平台的多机通信问题,提出了一个能同时处理实时信息和非实时信息的新的DSP多机通信解决方案。 相似文献
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阐述了基于DSP的智能仪表RS232串行通信接口电路设计,采用MAX202芯片,完成智能仪表与计算机的异步串行通信。分析了串行通信接口模块SCI波特率计算方法和串行通信程序设计。实现了RS485通信电路设计。阐述了硬件抗干扰,内电层分割,抑制干扰源和提高敏感元器件的抗干扰性能等方法。 相似文献
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介绍TMS320F2812DSP异步串行通信模块(SCI)功能特征的基础上,针对自行开发的微位移驱动器控制系统结构和通信的要求,从事以PC微机为上位机、DSP为下位机的主从式控制系统串行通信技术的研究,探讨串行通信接口的硬件实现技术,开发相关的串行通讯软件,并通过具体通信实例进行了验证,表明所提出的方法简单有效,满足控制系统的要求. 相似文献
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SCI – Scalable Coherent Interface – is an IEEE standard for specifying communication between multiprocessors in a shared
memory model. In this paper we model part of SCI by a program written in a UNITY-like programming language. This part of SCI
is formally specified in Manna and Pnueli's Linear Time Temporal Logic (LTL). We give a sketch of our proof that the program
satisfies its specification. The proof has been carried out within LTL. It uses history variables. Structuring of the proof
has been achieved by careful formulation of lemmata and the use of auxiliary predicates as an abstraction mechanism.
Received September 1997 / Accepted in revised form November 1999 相似文献
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The Scalable Coherent Interface (SCI) (IEEE P1596), which provides bus services by transmitting packets on a collection of point-to-point unidirectional links, is described. Its protocols support cache coherence in a distributed shared-memory multiprocessor model, with message passing, I/O, and LAN communication taking place over fiber optic or wire links. Several ongoing SCI-related projects that apply the SCI technology to new areas or extend it to more difficult problems are also described. Future plans are sketched 相似文献
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《自动化学报》2014,(11)
This paper deals with the problem of designing robust sequential covariance intersection(SCI) fusion Kalman filter for the clustering multi-agent sensor network system with measurement delays and uncertain noise variances. The sensor network is partitioned into clusters by the nearest neighbor rule. Using the minimax robust estimation principle, based on the worst-case conservative sensor network system with conservative upper bounds of noise variances, and applying the unbiased linear minimum variance(ULMV) optimal estimation rule, we present the two-layer SCI fusion robust steady-state Kalman filter which can reduce communication and computation burdens and save energy sources, and guarantee that the actual filtering error variances have a less-conservative upper-bound. A Lyapunov equation method for robustness analysis is proposed, by which the robustness of the local and fused Kalman filters is proved. The concept of the robust accuracy is presented and the robust accuracy relations of the local and fused robust Kalman filters are proved. It is proved that the robust accuracy of the global SCI fuser is higher than those of the local SCI fusers and the robust accuracies of all SCI fusers are higher than that of each local robust Kalman filter. A simulation example for a tracking system verifies the robustness and robust accuracy relations. 相似文献