单片机读写U盘的模块 USB118 _不用电脑也能读写U盘中的文件！ ■ 型 号: USB118AD USB118A 关键词：U盘、单片机、USB2.0、USB Host、USB主设备、设备黑匣子、数据记录 ■ 简 介 目前，基于USB2.0接口的移动存储设备已经被广泛使用，尤其是采用USB-FLASH技术的U盘产品的容量由几年前的16M增加到现在的4G以上。我们知道，U盘通常是作为计算机的外部存储设备，能否脱离计算机直接向U盘读写文件呢？答案是肯定的。USB118系列嵌入式U盘读写模块提供了通过串口或SPI口读写U盘的简单途径，由此结合单片机的RS232串口或高速SPI总线就可以实现对U盘上的文件读写。 USB118AD型高速U盘读写模块是对USB118A模块的性能进行改进后的USB2.0接口的高速模块，具有与USB118A模块完全兼容的串口，同时增加了高速的SPI接口，主要应用于便携仪器或者嵌入式数据采集系统的外挂式海量存储。 ■ 特 征 ◆ 不必了解USB协议，直接嵌入用户系统 ◆ 兼容1G以上U盘、移动硬盘 ◆ USB2.0接口，提供USB HOST接口 ◆ RS232串口波特率：57600/115200/9600bps ◆ 高速SPI接口文件传输速度：150KByte/Sec ◆ 支持文件系统：FAT16/FAT32 ◆ 创建Word、 Excel、二进制等各种类型文件 ◆ 提供单片机编程实例C51源代码 ◆ 提供模块测试板及电脑串口测试软件 ◆ 直流5V供电，电流100mA(不含U盘) ◆ 模块只有火柴盒大小：51.6×43×12mm ■ 应 用 ◆ 海量数据采集存储 ◆ 设备黑箱子 ◆ 考勤机数据记录 ◆ 石油仪器仪表 ◆ 纺织机械 ◆ 水文监测 ◆ 无纸记录仪
上传时间： 2013-06-03
上传用户：1234567890qqq
The LTC®4099 high effi ciency USB power manager andLi-Ion/Polymer battery charger seamlessly managespower distribution from multiple sources in portableapplications. It is differentiated from other USB powermanagers by its bidirectional I2C port that allows the hostmicroprocessor to control and monitor all aspects of theUSB power management and battery charging processes.In addition, a programmable interrupt generation functionalerts the host microprocessor to changes in device statusand provides unprecedented control of power managementfunctions. This high degree of confi gurability allowspost-layout changes in operation, even changes in thefi eld, and it allows a single qualifi ed device to be usedin a variety of products, thus reducing design time andeasing inventory management.
上传时间： 2013-10-22
上传用户：18602424091
以AVR单片机ATmega8和USB接口器件PDIUSBD12为核心，基于标准的USB1.1协议，设计一种通用USB接口模块，以满足嵌入式系统中对USB接口的需求。对模块的硬件电路或单片机固件程序的硬件接口层稍加修改即可用于其他各种微处理器。该模块可为各种嵌入式系统增加USB接口,实现与USB主机系统通信。 Abstract: Based on AVR microcontroller ATmega8 and USB interface chip PDIUSBD12, a general USB interface module is designed according to USB1.1 protocol for various requirements of embedded systems. Only with few modifications in circuit or hardware abstract layer of firmware, the module can be used on many types of microprocessors. All kinds of embedded systems can realize high speed and stable communication with USB host systems, owing to the facility of this module.
上传时间： 2014-01-08
上传用户：赵云兴
The PL2303 USB to Serial adapter is your smart and convenient accessory forconnecting RS-232 serial devices to your USB-equipped Windows host computer. Itprovides a bridge connection with a standard DB 9-pin male serial port connector inone end and a standard Type-A USB plug connector on the other end. You simplyattach the serial device onto the serial port of the cable and plug the USB connectorinto your PC USB port. It allows a simple and easy way of adding serial connectionsto your PC without having to go thru inserting a serial card and traditional portconfiguration.This USB to Serial adapter is ideal for connecting modems, cellular phones, PDAs,digital cameras, card readers and other serial devices to your computer. It providesserial connections up to 1Mbps of data transfer rate. And since USB does not requireany IRQ resource, more devices can be attached to the system without the previoushassles of device and resource conflicts.Finally, the PL-2303 USB to Serial adapter is a fully USB Specification compliantdevice and therefore supports advanced power management such as suspend andresume operations as well as remote wakeup. The PL-2303 USB Serial cable adapteris designed to work on all Windows operating systems.
上传时间： 2013-11-01
上传用户：ghostparker
设计并实现了一个嵌入式USB主机系统的硬件和软件，用于解决USB设备不能脱离PC主机的问题。并在设计的硬件和软件基础上利用嵌入式C语言编制了具有USB Host功能通用固件库。并利用这个固件库实现一个具有并口到USB接口的打印转换器。
上传时间： 2013-10-19
上传用户：yczrl
USB U 盘 开发的源代码， HOST USB2.0
上传时间： 2014-01-19
上传用户：aa54
CH375 是一个USB总线的通用接口芯片，支持USB-HOST主机方式和USB-DEVICE/SLAVE设备方式。在本地端，CH375具有8位数据总线和读、写、片选控制线以及中断输出，可以方便地挂接到单片机/DSP/MCU/MPU等控制器的系统总线上。在USB主机方式下CH375还提供了串行通讯方式，通过串行输入、串行输出和中断输出与单片机/DSP/MCU/MPU 等相连接。 CH375 的USB 设备方式与CH372 芯片完全兼容，CH375 包含了CH372 的全部功能。本手册中没有提供CH375 在USB 设备方式下的说明，相关资料可以参考CH372 手册。 CH375的USB 主机方式支持常用的USB 全速设备，外部单片机可以通过CH375 按照相应的USB 协议与USB 设备通讯。CH375 还内置了处理Mass-Storage 海量存储设备的专用通讯协议的固件，外部单片机可以直接以扇区为基本单位读写常用的USB 存储设备（包括USB 硬盘/USB 闪存盘/U 盘）。
上传时间： 2013-12-18
上传用户：fhzm5658
This firmware translates a PS/2 mouse to a USB mouse. The translator firmware is entirely interrupt driven (with the exception of sending the data via USB to the host.) An interrupt is generated when the PS/2 start bit is received, at which time the firmware will begin its receive routine. In addition to this interrupt, every 168ms a timer overflow interrupts the main program and implements one state of the mouse state machine. This state machine handles sending bytes to and translating bytes received from the PS/2 mouse automatically. All of this is done in the background while the main program runs in the foreground. The only operation that the main program implements is sending mouse data to the PC via USB.
标签： firmware mouse translates translator
上传时间： 2015-04-26
上传用户：cuiyashuo
软件中包含了Cypress的SL811 USB接口芯片的固件程序以及如何51单片机进行操作的例子，并且有Linux下的驱动程序，阅读并借鉴这个程序就可以做出支持USB HOST的系统了。
上传时间： 2015-07-23
上传用户：cazjing
使用avr软件模拟usb，并实现cdc cla
上传时间： 2015-09-05
上传用户：a3318966
