摘 要:以EZ2USB FX2为基础设计了一种单片机的USB接口方式.该设计应用EZ2USB FX2芯片构建单片机和主机的数据管道,接口符合USB2.0协议.EZ2USBFX2芯片工作在从属FIFO方式下,通过适当的配置与单片机方便地进行连接,单片机可以象访问外部存储器一样访问FX2的端点.主机应用程序通过USB接口向单片机发送相应的命令,并能够接收单片机上传的数据.该设计硬件连接方便、编程简单.文中详细介绍了该设计的硬件组成和软件设计,包括FX2的固件程序和主机用户程序.关键词:FX2;Slave FIFO;USB;接口
上传时间: 2013-12-26
上传用户:swz13842860183
基于HT46RB50在USB充电器中的应用 HT46RB50是一个八位高性能精简指令集微控制器,它内部嵌入的USB SIE兼容USB1.1全速模式。
上传时间: 2013-10-17
上传用户:cxl274287265
USB-1620A工业多串口卡采用的是最新的USB2.0接口技术,兼容的USB2.0以下接口。可以应用于传统的RS-232串行通讯领域,扩充PC机标准RS-232通讯端口的数量,如工业自动化制作、POS系统和ATM的应用。
上传时间: 2013-10-16
上传用户:diets
本文针对在苹果园中监测测量控制等系统中无法方便的把数据传输给移动设备的情况,在此介绍了一种以USB接口芯片沁恒CH375和MCS51单片机为核心,U盘、移动硬盘等为存储介质的数据存储方案。本模块给出了硬件电路的设计和U盘的读写程序,并指出了易出错的调试细节。实验结果证明,该方法具有成本低,可靠性高,通用性强,可以简便地集成到各种监测、测控系统中。
上传时间: 2013-10-16
上传用户:zhqzal1014
51单片机扩展USB接口的方法 讨论了在P89C51RD 单片机上扩展USB 接口的方法. 介绍了USB 的相关技术标准. 详细描述了P89C51RD 单片机与USBN9603 的接口原理,给出了硬件原理图并介绍了固件程序与设备驱动程序软件的编制过程. 廉价的51 单片机具备了USB 接口,其应用范围将更加广泛.
上传时间: 2014-01-16
上传用户:alibabamama
STM32F10xxx USB开发工具包
上传时间: 2013-10-23
上传用户:qunquan
usb调试助手:推荐的工具。
上传时间: 2013-11-07
上传用户:lyy1234
本文设计一种以C8051F020 单片机为处理器,双模式USB 为接口的比色计仪器。该仪器可以工作在USB 设备和主机两种模式。在设备模式下,能直接与计算机进行数据通信;在主机模式下,能读写U盘,通过U 盘进行数据的传输。仪器采用双USB 插座,由单片机判断确定设备的工作方式。
上传时间: 2013-11-01
上传用户:ZZJ886
1、 支持USB 1.1通讯协议;2、 支持高速(Full Speed、12Mbps )和低速(Low Speed、1.5Mbps )传输;3、 6MHz晶体,锁相环PLL振荡器提供高速、低速所需时钟源;4、 支持3个端口(endpoint),可独立编程为IN 或 OUT端口。5、 PS/2:支持PS/2协议(eg.鼠标),与USB复用。
上传时间: 2013-11-03
上传用户: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.
标签: Demonstration 3200 USB for
上传时间: 2014-02-27
上传用户:zhangzhenyu