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sl811 SCSI INQUIRY 命令超时?
我用 89C52+SL811,SL811 作为HOST,U盘枚举通过,配置U盘的EP1为输出,EP2为输入,均为BULK方式,设置U盘地址为2,过EP2发出INQUIRY命令后,读取SL811 ep0status 为 0x0C 传输超时
SL811设置: ep0address = 0x10 ep0xferLen = 0x1f ep0status = 0x12 ;OUT + EP2 ep0counter = 0x02 ;addr ep0control = 0x23 ; 发出去的代码: 55H,53H,42H,43H,88H,0C5H,90H,0FFH 24H,00H,00H,00H,80H,00H,06H,12H 00H,00H,00H,20H,00H,00H,00H,00H 00H,00H,00H,00H,00H,00H,00H 那位做过的高手解答一下? |
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沙发#
发布于:2003-10-11 20:58
你的问题有点乱枚举结束后为什么还要读ep0?
可以和我联系我有详细的源码wangzzdd@netease.com |
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