Hello After trying the usb serial driver on linux-2.4.20, I found the max speed is about 120kbytes/sec, My windows side driver is modified against bulkusb(one sample of Windows DDK), I transfer a 2.2M file from window to smartphone(pxa27x) with usb serial driver. It took about 18seconds.why it is so slow? Is usb serial driver of 2.6 for lubbock behave the same way?
The receiver run on smartphone is open the /dev/usb in raw mode or just cat /dev/usb, and I found if sender application set outbuffer large then 120bytes for example 1024bytes, the receiver lost lots of data received!why ? Another problem I found transfer large binary file with ASCII 0 - 255, the char that ascii from 0-0x1c is not seen by receiver application, but windows side usb sniffer (bushond) could see the them sent!! Thanks for explain for my doubts!! ************************************************* 信息安全声明：本邮件包含信息归ZTE所有， ZTE对该邮件拥有所有权利。请接收者注意 保密，未经发件人书面许可，不得向任何第 三方组织和个人透露本邮件所含信息的全部 或部分。以上声明仅适用于工作邮件。 Information Security Note： * The information contained in this mail belongs to ZTE Corporation. ZTE maintains all rights to the mail. * The receipient shall not disclose any information of the content of the mail to any third party organization or individual without written permission of the mail sender. *********************************************** ------------------------------------------------------- This SF.net email is sponsored by: IT Product Guide on ITManagersJournal Use IT products in your business? Tell us what you think of them. Give us Your Opinions, Get Free ThinkGeek Gift Certificates! Click to find out more http://productguide.itmanagersjournal.com/guidepromo.tmpl _______________________________________________ [EMAIL PROTECTED] To unsubscribe, use the last form field at: https://lists.sourceforge.net/lists/listinfo/linux-usb-devel
