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请教个关于枚举的问题，希望各位能不吝赐教
我在做D12的枚举的时候，发现主机不发命令来获取设备描述符，而是一直在发关于复位的命令，我用Bus Hound监控到的数据
Bus Hound 5.00 capture. Complements of www.perisoft.net Device - Device ID (followed by the endpoint for USB devices) (13) Intel(R) 82801G (ICH7 Family) USB Universal Host Controller - 27CA (14) USB Root Hub Phase - Phase Type CTL USB control transfer DI Data in Data - Hex dump of the data transferred Descr - Description of the phase Cmd... - Position in the captured data Device Phase Data Description Cmd.Phase.Ofs(rep) ------ ----- ------------------------------------------------------------------------------------------------------ ---------------- ------------------ 14.0 CTL a3 00 00 00 02 00 04 00 GET STATUS 1.1.0(2) 14.0 DI 01 01 01 00 .... 1.2.0 14.0 CTL 23 01 10 00 02 00 00 00 CLEAR FEATURE 3.1.0 14.0 CTL a3 00 00 00 01 00 04 00 GET STATUS 4.1.0 14.0 DI 00 01 00 00 .... 4.2.0 14.0 CTL a3 00 00 00 02 00 04 00 GET STATUS 5.1.0(2) 14.0 DI 01 01 00 00 .... 5.2.0 14.0 CTL 23 03 04 00 02 00 00 00 SET FEATURE 7.1.0 14.0 CTL a3 00 00 00 02 00 04 00 GET STATUS 8.1.0 14.0 DI 03 01 10 00 .... 8.2.0 14.0 CTL 23 01 14 00 02 00 00 00 CLEAR FEATURE 9.1.0 14.0 CTL a3 00 00 00 02 00 04 00 GET STATUS 10.1.0(2) 14.0 DI 03 01 00 00 .... 10.2.0 14.0 CTL 23 03 04 00 02 00 00 00 SET FEATURE 12.1.0 14.0 CTL a3 00 00 00 02 00 04 00 GET STATUS 13.1.0 14.0 DI 03 01 10 00 .... 13.2.0 14.0 CTL 23 01 14 00 02 00 00 00 CLEAR FEATURE 14.1.0 14.0 CTL a3 00 00 00 02 00 04 00 GET STATUS 15.1.0 14.0 DI 03 01 00 00 .... 15.2.0 14.0 CTL 23 03 04 00 02 00 00 00 SET FEATURE 16.1.0 14.0 CTL a3 00 00 00 02 00 04 00 GET STATUS 17.1.0 14.0 DI 03 01 10 00 .... 17.2.0 14.0 CTL 23 01 14 00 02 00 00 00 CLEAR FEATURE 18.1.0 14.0 CTL a3 00 00 00 02 00 04 00 GET STATUS 19.1.0 14.0 DI 03 01 00 00 .... 19.2.0 14.0 CTL 23 03 04 00 02 00 00 00 SET FEATURE 20.1.0 14.0 CTL a3 00 00 00 02 00 04 00 GET STATUS 21.1.0 14.0 DI 03 01 10 00 .... 21.2.0 14.0 CTL 23 01 14 00 02 00 00 00 CLEAR FEATURE 22.1.0 14.0 CTL 23 01 01 00 02 00 00 00 CLEAR FEATURE 23.1.0 14.0 CTL a3 00 00 00 02 00 04 00 GET STATUS 24.1.0(2) 14.0 DI 00 01 01 00 .... 24.2.0 14.0 CTL 23 01 10 00 02 00 00 00 CLEAR FEATURE 26.1.0 14.0 CTL a3 00 00 00 01 00 04 00 GET STATUS 27.1.0 14.0 DI 00 01 00 00 .... 27.2.0 14.0 CTL a3 00 00 00 02 00 04 00 GET STATUS 28.1.0 14.0 DI 00 01 00 00 .... 28.2.0 想请教一下，这是什么问题啊，是硬件连接上的问题还是其他什么问题？ 谢谢 |
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沙发#
发布于：2010-04-09 09:03
自己顶，希望各位达人能赐教啊
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