單片機與計算機串行通行的設計

 摘 要

   本課題是 “虛擬電子實驗環(huán)境建設及實驗教學方法的研究”立項的課題。為了便于實驗教學中原理與應用相結合，避免實驗裝置的分散和重復，降低實驗成本，我們設計了具有一定通用性的開放式的微機與單片機實驗平臺”，可以很好的滿足微機化、自動化等方面課程實驗的需要，也可在該實驗平臺上開設出獨立的實驗課程和綜合應用實驗。在總體功能上，對該實驗平臺的控制采用兩種方式：PC 機控制和單片機控制。實驗平臺能夠通過增強型并行接口（EPP，Enhanced Parallel Port）與 PC 機連接，在 PC 機上通過匯編語言、C 語言、LabVIEW 或 LabWindows/CVI 虛擬儀器開發(fā)平臺等，實現(xiàn)對實驗平臺上通用實驗電路的操作；也能夠通過單片機控制通用實驗電路；另外，為了試驗方便，實驗平臺還包含了一個單片機仿真器，在 PC 機上配備有相應的仿真開發(fā)調試環(huán)境。另外在該實驗平臺上還配備有 STD總線插槽，可以方便地實現(xiàn)實驗功能的擴充。

關鍵詞： 實驗平臺；實驗教學；微機接口；單片機；虛擬儀器；STD 總線,EPP

Abstract

 Based on the practical requirements of electronic experimenting education oncampus, this article brings forward the design and implementation of computer &MCU based experimenting platform developed by ourselves. Experiments can be implemented on this device not only by means of EPP port but also through the embedded simplified MCU emulator. In this article, the principle of each part of the experimenting platform is specially introduced by which this device is built. At present, the experimenting platform of this kind is still not reported to be designed in China.

Keywords: Experimenting Platform; Experimenting Education; Computer ports;EPP (Enhanced Parallel Port); MCU; Virtual Instrumentation; STD bus