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)計和U盤的讀寫程序,并指出了易出錯的調(diào)試細節(jié)。實驗結(jié)果證明,該方法具有成本低,可靠性高,通用性強,可以簡便地集成到各種監(jiān)測、測控系統(tǒng)中。
標簽： 375 USB CH 數(shù)據(jù)傳輸
上傳時間： 2013-10-16
上傳用戶：zhqzal1014
51單片機擴展USB接口的方法 討論了在P89C51RD 單片機上擴展USB 接口的方法. 介紹了USB 的相關(guān)技術(shù)標準. 詳細描述了P89C51RD 單片機與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. 廉價的51 單片機具備了USB 接口,其應用范圍將更加廣泛.
上傳時間： 2014-01-16
上傳用戶：alibabamama
STM32F10xxx USB開發(fā)工具包
上傳時間： 2013-10-23
上傳用戶：qunquan
usb調(diào)試助手:推薦的工具。
標簽： usb 調(diào)試助手
上傳時間： 2013-11-07
上傳用戶：lyy1234
本文設(shè)計一種以C8051F020 單片機為處理器，雙模式USB 為接口的比色計儀器。該儀器可以工作在USB 設(shè)備和主機兩種模式。在設(shè)備模式下，能直接與計算機進行數(shù)據(jù)通信；在主機模式下，能讀寫Ｕ盤，通過U 盤進行數(shù)據(jù)的傳輸。儀器采用雙USB 插座，由單片機判斷確定設(shè)備的工作方式。
上傳時間： 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、低速所需時鐘源；4、 支持3個端口（endpoint），可獨立編程為IN 或 OUT端口。5、 PS/2：支持PS/2協(xié)議（eg.鼠標），與USB復用。
上傳時間： 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.
標簽： Demonstration 3200 USB for
上傳時間： 2014-02-27
上傳用戶：zhangzhenyu
The μPSD32xx family, from ST, consists of Flash programmable system devices with a 8032 Microcontroller Core. Of these, the μPSD3234A and μPSD3254A are notable for having a complete implementation of the USB hardware directly on the chip, complying with the Universal Serial Bus Specification, Revision 1.1.This application note describes a demonstration program that has been written for the DK3200 hardware demonstration kit (incorporating a μPSD3234A device). It gives the user an idea of how simple it is to work with the device, using the HID class as a ready-made device driver for the USB connection.
上傳時間： 2014-04-03
上傳用戶：lizhizheng88
簡要介紹了CAN總線技術(shù)與USB總線技術(shù)的特點，給出了通過將兩特點相結(jié)合，并選用微控制器AT89C52堯USB控制芯片CH372和獨立CAN控制芯片SJA1000實現(xiàn)USB-CAN數(shù)據(jù)傳輸系統(tǒng)的設(shè)計方案遙該系統(tǒng)不但能實現(xiàn)CAN總線與USB總線之間的數(shù)據(jù)轉(zhuǎn)化，并可在兩臺主機配合下完成兩個節(jié)點之間數(shù)據(jù)的透明傳輸。關(guān)鍵詞 通用串行總線USB CAN總線 數(shù)據(jù)通信
標簽： CAN USB 總線 轉(zhuǎn)接技術(shù)
上傳時間： 2013-10-15
上傳用戶：plsee
摘要：TUSB3200 是由德州儀器日本公司推出的一款用于USB 接口連接的音頻數(shù)據(jù)控制芯片，該芯片內(nèi)置8052MCU 微處理器，能實現(xiàn)多聲道的錄音和播放功能。文中介紹了TUSB3200 的內(nèi)部工作原理、框圖及功能，并給出了用TUSB3200 設(shè)計的雙聲道輸入/輸出播錄的應用電路。關(guān)鍵詞：USB 音頻接口 單片機 TUBS3200 USB 音頻接口電路是帶USB 接口的音響設(shè)備和電腦多媒體外圍設(shè)備的必需器件。德州儀器公司推出的TUSB3200 是一款最適合于音響和電腦周邊設(shè)備的USB 接口用的音頻數(shù)據(jù)控制芯片。它采用52 腳扁平封裝，帶有內(nèi)置微處理器，價格低，可實現(xiàn)多聲道播放和錄音等功能，因而具有廣泛的用途。
上傳時間： 2013-11-23
上傳用戶：dumplin9
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