智能儀器的USB接口設計

測控文編號:CK106   論文字數(shù):11943,頁數(shù):41

目 錄

摘要…………………………………………………………………………………………………… I
1 緒論………………………………………………………………………………………………… 1
2 總體設計方案……………………………………………………………………………………  2
2.1  系統(tǒng)總體結構………………………………………………………………………………  2
2.2  系統(tǒng)硬件結構………………………………………………………………………………  2
2.3  系統(tǒng)總體軟件流程…………………………………………………………………………  3
3  系統(tǒng)硬件設計…………………………………………………………………………………… 5
 3.1  LPC2103系統(tǒng)硬件概況  …………………………………………………………………  5
  3.2  接口芯片CH375…………………………………………………………………………… 10
4  軟件設計……………………………………………………………………………………… 17
 4.1  主機模式…………………………………………………………………………………… 17
   4.2  設備模式…………………………………………………………………………………… 20
  
5  結論  …………………………………………………………………………………………… 21
致謝 ………………………………………………………………………………………………… 22
參考文獻……………………………………………………………………………………………  23
附錄1 主機模式程序…………………………………………………………………………………25
附錄2 設備模式程序…………………………………………………………………………………34
附錄3 硬件實物圖……………………………………………………………………………………37

摘  要

 隨著計算機技術和移動技術的不斷發(fā)展，不論是計算機還是儀器儀表，都朝著精簡和通用的方向發(fā)展。尤其在接口方面，USB接口憑借其接口簡潔，通訊速率快等特點，迅速成為計算機最常用的外部接口之一。傳統(tǒng)的智能儀器一般多用串口或并口作為其與外部通信的接口，但是目前市場上面的PC機的接口越來越精簡，筆記本電腦上基本已經(jīng)沒有串口和并口，有部分臺式電腦甚至也出現(xiàn)這種趨勢。因此傳統(tǒng)智能儀器的普及正在或即將因為其接口而受到限制。本文設計的智能儀器USB接口將能從微處理器接收數(shù)據(jù)并通過USB接口進行存儲，或?qū)⒅悄軆x器和計算機通過USB接口進行通信。此系統(tǒng)可以擺脫接口多樣化而造成產(chǎn)品使用不方便的困擾，具有普遍的現(xiàn)實意義和實用價值。

關鍵詞：USB接口、智能儀器、通訊接口

Abstract

 With the development of the computer and mobile technology, no matter the instrumentation or computer, their interface are going to become more and more simple and current. Particularly in the area of the interface, the USB interface is rapidly becoming one of the most popular interfaces in the computer because of its simple configuration and fast speed. The traditional intelligent devices usually use the serial or parallel to communicate with others. However, in current market, the PC interface is becoming more and more simplify. There is almost no serial or parallel on the laptops. Some desktops are also reducing their interfaces. So the spreading of the traditional intelligent instrumentation is or will be in trouble because of its interface. This paper offers the way of the MCU sending the data into flash memory and saving data and the MCU communicate with the PC using an interface chip. This design can shack off the trouble of variety of interfaces. So it has universal relevance and applied value. 
 
Keywords：USB interface, intelligent instrumentation, communication interface