| 基于AT91SAM7S128的USB的海量存储 |
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| 引用本文： | 张潇,王永骥.基于AT91SAM7S128的USB的海量存储[J].兵工自动化,2006,25(9):50-52. |
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| 作者姓名： | 张潇 王永骥 |
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| 作者单位： | 华中科技大学,控制科学与工程系,湖北,武汉,430074 |
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| 摘 要： | 基于AT91SAM7S128的USB海量存储设计中,USB_DM与USB_DP信号是UDP双向差分信号.硬件连接包括UDP本身信号线和另外I/O线各2个.输入信号USB_CNX检测来自主机的VBUS是否有效,以检验主机是否连接.当器件准备与主机通信时,输出信号USB_DP_PUP通过其控制线激活DP上拉.其软件包括固件、设备配置、BULK_ONLY、FAT文件系统等程序的设计.
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| 关 键 词： | AT91SAM7S128 通用串行总线 海量存储类 固件 海量存储 Based 存储设计 程序 文件系统 配置 设备 固件 软件包 激活 控制线 输出信号 主机通信 器件 硬件连接 检验 检测 输入信号 信号线 差分信号 |
| 文章编号： | 1006-1576（2006）09-0050-03 |
| 收稿时间： | 2006-05-30 |
| 修稿时间： | 2006-07-24 |
USB Mass Storage Based on AT91SAM7S128 |
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| ZHANG Xiao,WANG Yong-ji.USB Mass Storage Based on AT91SAM7S128[J].Ordnance Industry Automation,2006,25(9):50-52. |
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| Authors: | ZHANG Xiao WANG Yong-ji |
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| Abstract: | In the design of the USB mass storage based on AT91SAM7S128, USB_DM and USB_DM signal was the bidirectional difference signal of UDP. The hardware connection includes two signal lines of UDP and another two I/O lines. In order to check whether the host was connected or not, the input signal USB_CNX was used to measure whether the VBUS from host computer was efficient or not. The output signal USB_DP_PUP made DP pull up by its control line when all parts of the apparatus were ready to communicate with host. The design of software includes firmware, equipment configuration, BULK ONLY protocol and FAT file system. |
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| Keywords: | AT91SAM7S128 USB Mass storage Firmware |
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