虚拟串口出了点问题，一直显示未知的设备符，bushound抓取的数据如下
Bus Hound 6.01 capture on Windows Vista (x64). Complements of www.perisoft.net
Device - Device ID (followed by the endpoint for USB devices)
(12) Unknown USB Device (Device Descriptor Request Failed)
Address - FireWire async address or channel number
Length - Total transfer length
Phase - Phase Type
IRP I/O request packet
STAK IRP stack location
Data - Hex dump of the data transferred
Descr - Description of the phase
Cmd... - Position in the captured data
Device Address Length Phase Data Description Cmd.Phase.Ofs(rep)
------ ------------------- -------- ----- -------------------------------------------------- ---------------- ------------------
12 IRP 06 00 78 04 01 00 00 00 00 00 00 00 00 00 00 00 1.1.0
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 1.1.16
b0 56 8d 1f 03 b6 ff ff b0 56 8d 1f 03 b6 ff ff 1.1.32
00 00 00 00 00 00 00 00 80 c3 c4 4a 05 a5 ff ff 1.1.48
12 STAK 1b 13 00 00 00 00 00 00 01 00 00 00 00 00 00 00 QUERY ID 1.2.0
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 1.2.16
00 00 00 00 00 00 00 00 20 a5 fa 27 03 b6 ff ff 1.2.32
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 1.2.48
12 IRP 06 00 78 04 01 00 00 00 00 00 00 00 00 00 00 00 2.1.0
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 2.1.16
b0 56 8d 1f 03 b6 ff ff b0 56 8d 1f 03 b6 ff ff 2.1.32
00 00 00 00 00 00 00 00 70 c4 c4 4a 05 a5 ff ff 2.1.48
12 STAK 1b 13 00 00 00 00 00 00 02 00 00 00 00 00 00 00 QUERY ID 2.2.0
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 2.2.16
00 00 00 00 00 00 00 00 20 a5 fa 27 03 b6 ff ff 2.2.32
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 2.2.48
12 IRP 06 00 78 04 01 00 00 00 00 00 00 00 00 00 00 00 3.1.0
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 3.1.16
b0 56 8d 1f 03 b6 ff ff b0 56 8d 1f 03 b6 ff ff 3.1.32
bb 00 00 c0 00 00 00 00 00 00 00 00 00 00 00 00 3.1.48
12 STAK 1b 13 00 00 00 00 00 00 05 00 00 00 00 00 00 00 QUERY ID 3.2.0
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 3.2.16
00 00 00 00 00 00 00 00 20 a5 fa 27 03 b6 ff ff 3.2.32
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 3.2.48
12 IRP 06 00 78 04 01 00 00 00 00 00 00 00 00 00 00 00 4.1.0
00 00 06 00 00 00 00 00 00 00 00 00 00 00 00 00 4.1.16
b0 56 8d 1f 03 b6 ff ff b0 56 8d 1f 03 b6 ff ff 4.1.32
bb 00 00 c0 00 00 00 00 00 00 00 00 00 00 00 00 4.1.48
12 STAK 1b 08 00 e0 00 00 00 00 68 cb 40 4a 05 f8 ff ff QUERY INTERFACE 4.2.0
28 00 01 00 00 00 00 00 40 97 cf 9b 04 c9 ff ff 4.2.16
00 00 00 00 00 00 00 00 20 a5 fa 27 03 b6 ff ff 4.2.32
00 00 00 00 00 00 00 00 e0 2b 04 99 06 f8 ff ff 4.2.48
12 IRP 06 00 78 04 01 00 00 00 00 00 00 00 00 00 00 00 5.1.0
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 5.1.16
b0 56 8d 1f 03 b6 ff ff b0 56 8d 1f 03 b6 ff ff 5.1.32
00 00 00 00 00 00 00 00 30 37 d1 4b 05 a5 ff ff 5.1.48
12 STAK 1b 15 00 00 00 00 00 00 00 00 00 00 00 00 00 00 QUERY BUS INFO 5.2.0
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 5.2.16
00 00 00 00 00 00 00 00 20 a5 fa 27 03 b6 ff ff 5.2.32
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 5.2.48
12 IRP 06 00 78 04 01 00 00 00 00 00 00 00 00 00 00 00 6.1.0
00 00 06 00 00 00 00 00 00 00 00 00 00 00 00 00 6.1.16
b0 56 8d 1f 03 b6 ff ff b0 56 8d 1f 03 b6 ff ff 6.1.32
bb 00 00 c0 00 00 00 00 00 00 00 00 00 00 00 00 6.1.48
12 STAK 1b 08 00 e0 00 00 00 00 58 cb 40 4a 05 f8 ff ff QUERY INTERFACE 6.2.0
48 00 01 00 00 00 00 00 60 97 cf 9b 04 c9 ff ff 6.2.16
00 00 00 00 00 00 00 00 20 a5 fa 27 03 b6 ff ff 6.2.32
00 00 00 00 00 00 00 00 e0 2b 04 99 06 f8 ff ff 6.2.48
12 IRP 06 00 78 04 01 00 00 00 00 00 00 00 00 00 00 00 7.1.0
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 7.1.16
b0 56 8d 1f 03 b6 ff ff b0 56 8d 1f 03 b6 ff ff 7.1.32
bb 00 00 c0 00 00 00 00 00 00 00 00 00 00 00 00 7.1.48
12 STAK 1b 0b 00 00 00 00 00 00 00 00 00 00 00 00 00 00 QUERY RES REQ 7.2.0
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 7.2.16
00 00 00 00 00 00 00 00 20 a5 fa 27 03 b6 ff ff 7.2.32
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 7.2.48
12 IRP 06 00 78 04 01 00 00 00 00 00 00 00 00 00 00 00 8.1.0
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 8.1.16
b0 56 8d 1f 03 b6 ff ff b0 56 8d 1f 03 b6 ff ff 8.1.32
bb 00 00 c0 00 00 00 00 00 00 00 00 00 00 00 00 8.1.48
12 STAK 1b 0a 00 00 00 00 00 00 00 00 00 00 00 00 00 00 QUERY RESOURCES 8.2.0
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 8.2.16
00 00 00 00 00 00 00 00 20 a5 fa 27 03 b6 ff ff 8.2.32
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 8.2.48
12 IRP 06 00 78 04 01 00 00 00 00 00 00 00 00 00 00 00 9.1.0
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 9.1.16
40 6b 2b 29 03 b6 ff ff 40 6b 2b 29 03 b6 ff ff 9.1.32
00 00 00 00 00 00 00 00 50 37 bf 4a 05 a5 ff ff 9.1.48
12 STAK 1b 07 00 e0 00 00 00 00 04 00 00 00 00 00 00 00 QUERY RELATIONS 9.2.0
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 9.2.16
00 00 00 00 00 00 00 00 20 a5 fa 27 03 b6 ff ff 9.2.32
00 00 00 00 00 00 00 00 e0 2b 04 99 06 f8 ff ff 9.2.48
12 IRP 06 00 78 04 01 00 00 00 00 00 00 00 00 00 00 00 10.1.0
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 10.1.16
40 6b 2b 29 03 b6 ff ff 40 6b 2b 29 03 b6 ff ff 10.1.32
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 10.1.48
12 STAK 1b 08 00 e0 00 00 00 00 88 56 42 52 05 f8 ff ff QUERY INTERFACE 10.2.0
48 00 01 00 00 00 00 00 a0 92 cf 9b 04 c9 ff ff 10.2.16
10 03 1f 26 03 b6 ff ff 20 a5 fa 27 03 b6 ff ff 10.2.32
00 00 00 00 00 00 00 00 40 74 ee 98 06 f8 ff ff 10.2.48
12 IRP 06 00 78 04 01 00 00 00 00 00 00 00 00 00 00 00 11.1.0
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 11.1.16
b0 56 8d 1f 03 b6 ff ff b0 56 8d 1f 03 b6 ff ff 11.1.32
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 11.1.48
12 STAK 1b 19 00 00 00 00 00 00 00 00 00 00 00 00 00 00 PNP 11.2.0
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 11.2.16
00 00 00 00 00 00 00 00 20 a5 fa 27 03 b6 ff ff 11.2.32
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 11.2.48
12 IRP 06 00 78 04 01 00 00 00 00 00 00 00 00 00 00 00 12.1.0
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 12.1.16
b0 56 8d 1f 03 b6 ff ff b0 56 8d 1f 03 b6 ff ff 12.1.32
bb 00 00 c0 00 00 00 00 00 00 00 00 00 00 00 00 12.1.48
12 STAK 1b 18 00 00 00 00 00 00 00 00 00 00 00 00 00 00 QUERY LEGACY 12.2.0
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 12.2.16
00 00 00 00 00 00 00 00 20 a5 fa 27 03 b6 ff ff 12.2.32
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 12.2.48
12 IRP 06 00 78 04 01 00 00 00 00 00 00 00 00 00 00 00 13.1.0
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 13.1.16
b0 56 8d 1f 03 b6 ff ff b0 56 8d 1f 03 b6 ff ff 13.1.32
bb 00 00 c0 00 00 00 00 00 00 00 00 00 00 00 00 13.1.48
12 STAK 1b 0b 00 00 00 00 00 00 00 00 00 00 00 00 00 00 QUERY RES REQ 13.2.0
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 13.2.16
00 00 00 00 00 00 00 00 20 a5 fa 27 03 b6 ff ff 13.2.32
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 13.2.48
12 IRP 06 00 78 04 01 00 00 00 00 00 00 00 00 00 00 00 14.1.0
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 14.1.16
b0 56 8d 1f 03 b6 ff ff b0 56 8d 1f 03 b6 ff ff 14.1.32
bb 00 00 c0 00 00 00 00 00 00 00 00 00 00 00 00 14.1.48
12 STAK 1b 0d 00 e0 00 00 00 00 00 00 00 00 00 00 00 00 FILTER RES REQ 14.2.0
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 14.2.16
00 00 00 00 00 00 00 00 20 a5 fa 27 03 b6 ff ff 14.2.32
00 00 00 00 00 00 00 00 e0 2b 04 99 06 f8 ff ff 14.2.48
12 IRP 06 00 78 04 02 00 00 00 00 00 00 00 00 00 00 00 15.1.0
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 15.1.16
40 bb 0a 26 03 b6 ff ff 40 bb 0a 26 03 b6 ff ff 15.1.32
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 15.1.48
12 STAK 1b 09 00 e0 00 00 00 00 80 25 0f 9c 04 c9 ff ff QUERY CAPS 15.2.0
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 15.2.16
00 00 00 00 00 00 00 00 20 a5 fa 27 03 b6 ff ff 15.2.32
00 00 00 00 00 00 00 00 30 e3 04 99 06 f8 ff ff 15.2.48
12 IRP 06 00 78 04 01 00 00 00 00 00 00 00 00 00 00 00 16.1.0
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 16.1.16
00 f5 9d 28 03 b6 ff ff 00 f5 9d 28 03 b6 ff ff 16.1.32
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 16.1.48
12 STAK 1b 00 00 e0 00 00 00 00 00 00 00 00 00 00 00 00 START DEVICE 16.2.0
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 16.2.16
00 00 00 00 00 00 00 00 20 a5 fa 27 03 b6 ff ff 16.2.32
00 00 00 00 00 00 00 00 e0 2b 04 99 06 f8 ff ff 16.2.48
12 IRP 06 00 78 04 02 00 00 00 00 00 00 00 00 00 00 00 17.1.0
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 17.1.16
b0 56 8d 1f 03 b6 ff ff b0 56 8d 1f 03 b6 ff ff 17.1.32
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 17.1.48
12 STAK 1b 09 00 e0 00 00 00 00 60 98 cf 9b 04 c9 ff ff QUERY CAPS 17.2.0
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 17.2.16
00 00 00 00 00 00 00 00 20 a5 fa 27 03 b6 ff ff 17.2.32
00 00 00 00 00 00 00 00 30 e3 04 99 06 f8 ff ff 17.2.48
12 IRP 06 00 78 04 02 00 00 00 00 00 00 00 00 00 00 00 18.1.0
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 18.1.16
b0 56 8d 1f 03 b6 ff ff b0 56 8d 1f 03 b6 ff ff 18.1.32
00 00 00 00 00 00 00 00 04 00 00 00 00 00 00 00 18.1.48
12 STAK 1b 14 00 e0 00 00 00 00 00 00 00 00 00 00 00 00 QUERY DEV STATE 18.2.0
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 18.2.16
00 00 00 00 00 00 00 00 20 a5 fa 27 03 b6 ff ff 18.2.32
00 00 00 00 00 00 00 00 30 e3 04 99 06 f8 ff ff 18.2.48
12 IRP 06 00 78 04 02 00 00 00 00 00 00 00 00 00 00 00 19.1.0
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 19.1.16
b0 7c 91 24 03 b6 ff ff b0 7c 91 24 03 b6 ff ff 19.1.32
bb 00 00 c0 00 00 00 00 00 00 00 00 00 00 00 00 19.1.48
12 STAK 1b 07 00 e0 00 00 00 00 03 00 00 00 00 00 00 00 QUERY RELATIONS 19.2.0
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 19.2.16
00 00 00 00 00 00 00 00 20 a5 fa 27 03 b6 ff ff 19.2.32
00 00 00 00 00 00 00 00 e0 2b 04 99 06 f8 ff ff 19.2.48
12 IRP 06 00 78 04 02 00 00 00 00 00 00 00 00 00 00 00 20.1.0
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 20.1.16
b0 7c 91 24 03 b6 ff ff b0 7c 91 24 03 b6 ff ff 20.1.32
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 20.1.48
12 STAK 1b 17 00 e0 00 00 00 00 00 00 00 00 00 00 00 00 SURPRISE REMOVAL 20.2.0
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 20.2.16
00 00 00 00 00 00 00 00 20 a5 fa 27 03 b6 ff ff 20.2.32
00 00 00 00 00 00 00 00 10 3a 09 99 06 f8 ff ff 20.2.48
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