在ADS下开发基于XScale PXA255的USB数据通道  

Implement of the USB Data Channels Using ADS Based on XScale PXA255

作　　者：陈达[1] 刘志丽 

机构地区：[1]北京机械工业自动化研究所,北京100120 [2]北京海地人矿业权评估事务所,北京100034

出　　处：《装备制造技术》2009年第9期59-61,64,共4页Equipment Manufacturing Technology

摘　　要：介绍了在ADS(ARM Developer Suite)下为XScale PXA255嵌入式系统开发平台添加了USB数据通道的实现过程;为使PC机能够识别USB设备,首先需要初始化USB控制器,然后将开发平台上的SDRAM格式化为FAT16格式的文件系统,这样在Windows的浏览器下,就可将此SDRAM视作操作系统的一个RAM盘;最后只需执行简单的拷贝与粘贴命令,就可以实现PC机到开发平台的数据下载,向开发板传送数据的速度比串口明显提高。This paper achieved the USB Data Channels using ADS IDE for the PXA255-based embedded system platform. In order to tag USB device to the PC, initializing the USB device controller. Secondly, formatting the SRAM in FAT16 file system, then the SRAM will be recognized as a RAM disk at the browser of the Windows PC. Finally, using copy and stick orders whereby realize the downloading of the data to the embedded platform. As a result, the speed of downloading data to the embedded platform can be increased evidently comparing to the UART.

关 键 词：ADS PXA255 USB固件 海量存储类设备 RAM盘 嵌入式系统 

分 类 号：TP316[自动化与计算机技术—计算机软件与理论]