This application note shows how to write an Inter Integrated Circuit bus driver (I²C) for the Philips P90CL301micro-controller.It is not only an example of writing a driver, but it also includes a set of application interface software routines toquickly implement a complete I²C multi-master system application.For specific applications the user will have to make minimal changes in the driver program. Using the drivermeans linking Modules to your application software and including a header-file into the application sourceprograms. A small example program of how to use the driver is listed.The driver supports i.a. polled or interrupt driven message handling, slave message transfers and multi-mastersystem applications. Furthermore, it is made suitable for use in conjunction with real time operating systems, likepSOS+.
上傳時間： 2013-11-23
上傳用戶：weixiao99
I2C interface, is a very powerful tool for system designers. Theintegrated protocols allow systems to be completely software defined.Software development time of different products can be reduced byassembling a library of reusable software Modules. In addition, themultimaster capability allows rapid testing and alignment ofend-products via external connections to an assembly-line computer.The mask programmable 87LPC76X and its EPROM version, the87LPC76X, can operate as a master or a slave device on the I2Csmall area network. In addition to the efficient interface to thededicated function ICs in the I2C family, the on-board interfacefacilities I/O and RAM expansion, access to EEPROM andprocessor-to-processor communications.
標簽： microcontro Using 76X LPC
上傳時間： 2013-12-30
上傳用戶：Artemis
CAN與RS232轉換節(jié)點的設計與實現(xiàn) 介紹將CAN總線接口與RS232總線接口相互轉換的設計方法和2種總線電平轉換關系，實現(xiàn)CAN總線與各模塊的接口設計，制定了相應的軟硬件設計方案，并給出軟件設計流程圖以及部分硬件設計原理圖。為CAN總線與RS232總線互聯(lián)提供了一種方法，對CAN總線與RS232總線接口設備的互聯(lián)和廣泛應用的實現(xiàn)具有重要意義。關鍵詞：CAN總線；RS-232總線；串行通信Design and Realization of CAN and RS232 Transformation NodeZHOU Wei, CHENG Xiao-hong(Information Institute, Wuhan University of Technology, Wuhan 430070)【Abstract】This paper introduces one design method of the CAN bus interface and the RS232 bus interface interconversion, emphasizes two kindof bus level transformation relations, realizes the CAN bus and various Modules connection design, formulates the design proposal of correspondingsoftware and hardware, and gives the flow chart of software design as well as the partial schematic diagram of hardware design. It providesonemethod for the CAN bus and the RS232 bus interconnection, has the vital significance to widespread application realization of the CAN busand theRS232 bus interface equipment interconnection.【Key words】CAN bus; RS-232 bus; serial communication
上傳時間： 2013-11-04
上傳用戶：leesuper
針對嵌入式機器視覺系統(tǒng)向獨立化、智能化發(fā)展的要求，介紹了一種嵌入式視覺系統(tǒng)--智能相機。基于對智能相機體系結構、組成模塊和圖像采集、傳輸和處理技術的分析，對國內外的幾款智能相機進行比較。綜合技術發(fā)展現(xiàn)狀，提出基于FPGA+DSP模式的硬件平臺，并提出智能相機的發(fā)展方向。分析結果表明，該系統(tǒng)設計可以實現(xiàn)脫離PC運行，完成圖像獲取與分析，并作出相應輸出。 Abstract: This paper introduced an embedded vision system-intelligent camera ，which was for embedded machine vision systems to an independent and intelligent development requirements. Intelligent camera architecture， component Modules and image acquisition， transmission and processing technology were analyzed. After comparing integrated technology development of several intelligent cameras at home and abroad， the paper proposed the hardware platform based on FPGA+DSP models and made clear direction of development of intelligent cameras. On the analysis of the design， the results indicate that the system can run from the PC independently to complete the image acquisition and analysis and give a corresponding output.
上傳時間： 2013-10-24
上傳用戶：bvdragon
A Computer-On-Module, or COM, is a Module with all components necessary for a bootable host computer, packaged as a super component. A COM requires a Carrier Board to bring out I/O and to power up. COMs are used to build single board computer solutions and offer OEMs fast time-to-market with reduced development cost. Like integrated circuits, they provide OEMs with significant freedom in meeting form-fit-function requirements. For all these reasons the COM methodology has gained much popularity with OEMs in the embedded industry. COM Express® is an open industry standard for Computer-On-Modules. It is designed to be future proof and to provide a smooth transition path from legacy parallel interfaces to LVDS (Low Voltage Differential Signaling) interfaces. These include the PCI bus and parallel ATA on the one hand and PCI Express and Serial ATA on the other hand.
上傳時間： 2013-11-05
上傳用戶：Wwill
資料說明介紹 PCB Translator_CAMCAD轉換器3.95版本，里面含CAMCAD_3.9.5a_crack文件，可以對軟件進行破解 （需要安裝PCB Translator后才能進行破解） 針對PCB設計文件的RSI轉換器能夠轉換PCB設計和生產所需要的所有信息。它們包括：庫，布置位置，插入屬性信息，網表，走線，文字和銅箔，以及其它相關的項目。不需要執(zhí)行"導入Gerber"和"交叉參考"就可以完成所有這些工作。事實上，根本不需要定義參考，因為軟件可以從原始文件格式中提取出CAD數(shù)據(jù)，并把它直接輸出到新的文件格式中。只需要注意CAD系統(tǒng)本身的限制就可以了。 CAMCAD PCB 轉換器 CAMCAD PCB 轉換器是一個功能完善的PCB CAD 轉換器，圖形用戶界面也很淺顯易懂。CAMCAD PCB 轉換器支持大多數(shù)流行的CAD格式，比如Cadence Allegro, Orcad, Mentor and Accel EDA,也支持工業(yè)標準格式，比如GenCAM, GenCAD, and IPC-D-356.CAMCAD PCB 轉換器允許導入CAD文件到CAMCAD圖形用戶環(huán)境中，校驗數(shù)據(jù)，修改數(shù)據(jù)，然后可以把數(shù)據(jù)導出為任意格式的文件。這些特性意味著用戶可以完全控制所有的事情，比如層的轉換，也能解決CAD格式之間不兼容的問題。 一個案例,如果要轉換Cadence Allegro文件到PADS,所有必須的設計信息都會包含在新的文件中。不過，Cadence Allegro允許板子上的銅箔重疊，PADS卻不允許。Allegro 文件可以正常導入到CAMCAD。如果要立即把這個文件導出到PADS，程序會有錯誤提示。這時，可以使用CAMCAD的數(shù)據(jù)處理特性來改變有問題的銅箔，解決問題后再導出到PADS。 下面的矩陣表格，列出了CAMCAD PCB 轉換器所支持的當前PCB的轉換組合。Import Modules 一列中列出了可以被導入（讀取）的所有ECAD文件格式。Export Modules一行中列出了可以被導出（寫）的文件格式。在這個矩陣中的任意輸入和輸出模塊組合轉換都是可行的。當然，沒有任何ECAD到ECAD的轉換器是絕對完美的。由于ECAD layout系統(tǒng)有自己獨特的特性，而這些可能不能直接轉換到另一個有自己獨特特性的ECAD系統(tǒng)中。 CAMCAD PCB 轉換器支持的組合 建議配置：Windows 2000 或者 XP Professional，800 MHZ 處理器，512MB RAM 17"顯示器，1024×768分辨率 Copyright 2004 Router Solutions Incorporated RSI Reserves the right to make changes to its specifications and products without prior notice. CAMCAD is a registered trademark of Router Solutions Incorporated. All rights reserved. RSI recognizes other brand and product names as trademarks or registered trademarks of their respective holders.
標簽： Translator_CAMCAD PCB 轉換器
上傳時間： 2014-07-31
上傳用戶：Shaikh
資料說明介紹 PCB Translator_CAMCAD轉換器3.95版本，里面含CAMCAD_3.9.5a_crack文件，可以對軟件進行破解 （需要安裝PCB Translator后才能進行破解） 針對PCB設計文件的RSI轉換器能夠轉換PCB設計和生產所需要的所有信息。它們包括：庫，布置位置，插入屬性信息，網表，走線，文字和銅箔，以及其它相關的項目。不需要執(zhí)行"導入Gerber"和"交叉參考"就可以完成所有這些工作。事實上，根本不需要定義參考，因為軟件可以從原始文件格式中提取出CAD數(shù)據(jù)，并把它直接輸出到新的文件格式中。只需要注意CAD系統(tǒng)本身的限制就可以了。 CAMCAD PCB 轉換器 CAMCAD PCB 轉換器是一個功能完善的PCB CAD 轉換器，圖形用戶界面也很淺顯易懂。CAMCAD PCB 轉換器支持大多數(shù)流行的CAD格式，比如Cadence Allegro, Orcad, Mentor and Accel EDA,也支持工業(yè)標準格式，比如GenCAM, GenCAD, and IPC-D-356.CAMCAD PCB 轉換器允許導入CAD文件到CAMCAD圖形用戶環(huán)境中，校驗數(shù)據(jù)，修改數(shù)據(jù)，然后可以把數(shù)據(jù)導出為任意格式的文件。這些特性意味著用戶可以完全控制所有的事情，比如層的轉換，也能解決CAD格式之間不兼容的問題。 一個案例,如果要轉換Cadence Allegro文件到PADS,所有必須的設計信息都會包含在新的文件中。不過，Cadence Allegro允許板子上的銅箔重疊，PADS卻不允許。Allegro 文件可以正常導入到CAMCAD。如果要立即把這個文件導出到PADS，程序會有錯誤提示。這時，可以使用CAMCAD的數(shù)據(jù)處理特性來改變有問題的銅箔，解決問題后再導出到PADS。 下面的矩陣表格，列出了CAMCAD PCB 轉換器所支持的當前PCB的轉換組合。Import Modules 一列中列出了可以被導入（讀取）的所有ECAD文件格式。Export Modules一行中列出了可以被導出（寫）的文件格式。在這個矩陣中的任意輸入和輸出模塊組合轉換都是可行的。當然，沒有任何ECAD到ECAD的轉換器是絕對完美的。由于ECAD layout系統(tǒng)有自己獨特的特性，而這些可能不能直接轉換到另一個有自己獨特特性的ECAD系統(tǒng)中。 CAMCAD PCB 轉換器支持的組合 建議配置：Windows 2000 或者 XP Professional，800 MHZ 處理器，512MB RAM 17"顯示器，1024×768分辨率 Copyright 2004 Router Solutions Incorporated RSI Reserves the right to make changes to its specifications and products without prior notice. CAMCAD is a registered trademark of Router Solutions Incorporated. All rights reserved. RSI recognizes other brand and product names as trademarks or registered trademarks of their respective holders.
標簽： Translator_CAMCAD PCB 轉換器
上傳時間： 2014-12-31
上傳用戶：wvbxj
This document was developed under the Standard Hardware and Reliability Program (SHARP) TechnologyIndependent Representation of Electronic Products (TIREP) project. It is intended for use by VHSIC HardwareDescription Language (VHDL) design engineers and is offered as guidance for the development of VHDL modelswhich are compliant with the VHDL Data Item Description (DID DI-EGDS-80811) and which can be providedto manufacturing engineering personnel for the development of production data and the subsequent productionof hardware. Most VHDL modeling performed to date has been concentrated at either the component level orat the conceptual system level. The assembly and sub-assembly levels have been largely disregarded. Under theSHARP TIREP project, an attempt has been made to help close this gap. The TIREP models are based upon lowcomplexity Standard Electronic Modules (SEM) of the format A configuration. Although these Modules are quitesimple, it is felt that the lessons learned offer guidance which can readily be applied to a wide range of assemblytypes and complexities.
上傳時間： 2013-11-20
上傳用戶：pzw421125
針對嵌入式機器視覺系統(tǒng)向獨立化、智能化發(fā)展的要求，介紹了一種嵌入式視覺系統(tǒng)--智能相機。基于對智能相機體系結構、組成模塊和圖像采集、傳輸和處理技術的分析，對國內外的幾款智能相機進行比較。綜合技術發(fā)展現(xiàn)狀，提出基于FPGA+DSP模式的硬件平臺，并提出智能相機的發(fā)展方向。分析結果表明，該系統(tǒng)設計可以實現(xiàn)脫離PC運行，完成圖像獲取與分析，并作出相應輸出。 Abstract: This paper introduced an embedded vision system-intelligent camera ，which was for embedded machine vision systems to an independent and intelligent development requirements. Intelligent camera architecture， component Modules and image acquisition， transmission and processing technology were analyzed. After comparing integrated technology development of several intelligent cameras at home and abroad， the paper proposed the hardware platform based on FPGA+DSP models and made clear direction of development of intelligent cameras. On the analysis of the design， the results indicate that the system can run from the PC independently to complete the image acquisition and analysis and give a corresponding output.
上傳時間： 2013-11-14
上傳用戶：無聊來刷下
There are many manufacturers of dot matrix LCD Modules. However, most of these displaysare similar. They all have on-board controllers and drivers capable of displaying alpha numericsand a wide variety of other symbols (including Japanese "Katakana" characters). The internaloperation of LCD controller devices is determined by signals sent from a central processing unit(in this case, a CoolRunner-II CPLD).
標簽： CoolRunner-II XAPP 904 LCD
上傳時間： 2013-12-17
上傳用戶：haiya2000
