摘 要:以EZ2USB FX2為基礎(chǔ)設(shè)計(jì)了一種單片機(jī)的USB接口方式.該設(shè)計(jì)應(yīng)用EZ2USB FX2芯片構(gòu)建單片機(jī)和主機(jī)的數(shù)據(jù)管道,接口符合USB2.0協(xié)議.EZ2USBFX2芯片工作在從屬FIFO方式下,通過適當(dāng)?shù)呐渲门c單片機(jī)方便地進(jìn)行連接,單片機(jī)可以象訪問外部存儲器一樣訪問FX2的端點(diǎn).主機(jī)應(yīng)用程序通過USB接口向單片機(jī)發(fā)送相應(yīng)的命令,并能夠接收單片機(jī)上傳的數(shù)據(jù).該設(shè)計(jì)硬件連接方便、編程簡單.文中詳細(xì)介紹了該設(shè)計(jì)的硬件組成和軟件設(shè)計(jì),包括FX2的固件程序和主機(jī)用戶程序.關(guān)鍵詞:FX2;Slave FIFO;USB;接口
標(biāo)簽： C68013 68013 2.0 CY7
上傳時(shí)間： 2013-12-26
上傳用戶：swz13842860183
基于HT46RB50在USB充電器中的應(yīng)用 HT46RB50是一個(gè)八位高性能精簡指令集微控制器，它內(nèi)部嵌入的USB SIE兼容USB1.1全速模式。
上傳時(shí)間： 2013-10-17
上傳用戶：cxl274287265
USB-1620A工業(yè)多串口卡采用的是最新的USB2.0接口技術(shù)，兼容的USB2.0以下接口?？梢詰?yīng)用于傳統(tǒng)的RS-232串行通訊領(lǐng)域，擴(kuò)充PC機(jī)標(biāo)準(zhǔn)RS-232通訊端口的數(shù)量，如工業(yè)自動化制作、POS系統(tǒng)和ATM的應(yīng)用。
上傳時(shí)間： 2013-10-16
上傳用戶：diets
本文針對在蘋果園中監(jiān)測測量控制等系統(tǒng)中無法方便的把數(shù)據(jù)傳輸給移動設(shè)備的情況,在此介紹了一種以USB接口芯片沁恒CH375和MCS51單片機(jī)為核心,U盤、移動硬盤等為存儲介質(zhì)的數(shù)據(jù)存儲方案。本模塊給出了硬件電路的設(shè)計(jì)和U盤的讀寫程序,并指出了易出錯(cuò)的調(diào)試細(xì)節(jié)。實(shí)驗(yàn)結(jié)果證明,該方法具有成本低,可靠性高,通用性強(qiáng),可以簡便地集成到各種監(jiān)測、測控系統(tǒng)中。
標(biāo)簽： 375 USB CH 數(shù)據(jù)傳輸
上傳時(shí)間： 2013-10-16
上傳用戶：zhqzal1014
51單片機(jī)擴(kuò)展USB接口的方法 討論了在P89C51RD 單片機(jī)上擴(kuò)展USB 接口的方法. 介紹了USB 的相關(guān)技術(shù)標(biāo)準(zhǔn). 詳細(xì)描述了P89C51RD 單片機(jī)與USBN9603 的接口原理,給出了硬件原理圖并介紹了固件程序與設(shè)備驅(qū)動程序軟件的編制過程. 廉價(jià)的51 單片機(jī)具備了USB 接口,其應(yīng)用范圍將更加廣泛.
標(biāo)簽： USB 51單片機(jī) 擴(kuò)展 接口
上傳時(shí)間： 2014-01-16
上傳用戶：alibabamama
STM32F10xxx USB開發(fā)工具包
上傳時(shí)間： 2013-10-23
上傳用戶：qunquan
usb調(diào)試助手:推薦的工具。
標(biāo)簽： usb 調(diào)試助手
上傳時(shí)間： 2013-11-07
上傳用戶：lyy1234
本文設(shè)計(jì)一種以C8051F020 單片機(jī)為處理器，雙模式USB 為接口的比色計(jì)儀器。該儀器可以工作在USB 設(shè)備和主機(jī)兩種模式。在設(shè)備模式下，能直接與計(jì)算機(jī)進(jìn)行數(shù)據(jù)通信；在主機(jī)模式下，能讀寫Ｕ盤，通過U 盤進(jìn)行數(shù)據(jù)的傳輸。儀器采用雙USB 插座，由單片機(jī)判斷確定設(shè)備的工作方式。
上傳時(shí)間： 2013-11-01
上傳用戶：ZZJ886
1、 支持USB 1.1通訊協(xié)議；2、 支持高速（Full Speed、12Mbps ）和低速（Low Speed、1.5Mbps ）傳輸；3、 6MHz晶體，鎖相環(huán)PLL振蕩器提供高速、低速所需時(shí)鐘源；4、 支持3個(gè)端口（endpoint），可獨(dú)立編程為IN 或 OUT端口。5、 PS/2：支持PS/2協(xié)議（eg.鼠標(biāo)），與USB復(fù)用。
上傳時(shí)間： 2013-11-03
上傳用戶：hbsunhui
The μPSD32xx family, from ST, consists of Flash programmable system devices with a 8032 MicrocontrollerCore. Of these, the μPSD3234A and μPSD3254A are notable for having a complete implementationof the USB hardware directly on the chip, complying with the Universal Serial Bus Specification, Revision1.1.This application note describes a demonstration program that has been written for the DK3200 hardwaredemonstration kit (incorporating a μPSD3234A device). It gives the user an idea of how simple it is to workwith the device, using the HID class as a ready-made device driver for the USB connection.IN-APPLICATION-PROGRAMMING (IAP) AND IN-SYSTEM-PROGRAMMING (ISP)Since the μPSD contains two independent Flash memory arrays, the Micro Controller Unit (MCU) can executecode from one memory while erasing and programming the other. Product firmware updates in thefield can be reliably performed over any communication channel (such as CAN, Ethernet, UART, J1850)using this unique architecture. For In-Application-Programming (IAP), all code is updated through theMCU. The main advantage for the user is that the firmware can be updated remotely. The target applicationruns and takes care on its own program code and data memory.IAP is not the only method to program the firmware in μPSD devices. They can also be programmed usingIn-System-Programming (ISP). A IEEE1149.1-compliant JTAG interface is included on the μPSD. Withthis, the entire device can be rapidly programmed while soldered to the circuit board (Main Flash memory,Secondary Boot Flash memory, the PLD, and all configuration areas). This requires no MCU participation.The MCU is completely bypassed. So, the μPSD can be programmed or reprogrammed any time, anywhere, even when completely uncommitted.Both methods take place with the device in its normal hardware environment, soldered to a printed circuitboard. The IAP method cannot be used without previous use of ISP, because IAP utilizes a small amountof resident code to receive the service commands, and to perform the desired operations.
標(biāo)簽： Demonstration 3200 USB for
上傳時(shí)間： 2014-02-27
上傳用戶：zhangzhenyu
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