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我的ISO为何每个microFrame只传了一次?
希望每个microFrame能传3个packet,但发现只传了一个(确认是Host只发送了一个请求/microFrame)
;; Interface Descriptor db DSCR_INTRFC_LEN ;; Descriptor length db DSCR_INTRFC ;; Descriptor type db 0 ;; Zero-based index of this interface db 0 ;; Alternate setting db 1 ;; Number of end points db 0ffH ;; Interface class db 00H ;; Interface sub class db 00H ;; Interface sub sub class db 0 ;; Interface descriptor string index ;; Endpoint Descriptor db DSCR_ENDPNT_LEN ;; Descriptor length db DSCR_ENDPNT ;; Descriptor type db 82H ;; Endpoint number, and direction db ET_ISO ;; Endpoint type db 00H ;; Maximun packet size (LSB) db 14H ;; Max packect size (MSB) db 01H ;; Polling interval bushound 抓到的URB 20 07 0a 00 00 00 00 00 88 e8 8f 84 20 00 00 00 6c 4b f1 85 07 00 00 00 00 28 01 00 00 00 00 00 f8 48 b0 85 00 00 00 00 ff ff ff ff 0d f0 ad de 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 79 87 7c 00 90 00 00 00 00 00 00 00 00 00 00 00 00 04 00 00 00 00 00 00 00 04 00 00 00 04 00 00 00 00 00 00 00 08 00 00 00 04 00 00 00 00 00 00 00 0c 00 00 00 04 00 00 00 00 00 00 analyzer: Time IN transaction 1 2 HS 1.00 kB 0.016 244 033 IN transaction 1 2 HS 1.00 kB 0.016 369 000 IN transaction 1 2 HS 1.00 kB 0.016 493 950 IN transaction 1 2 HS 1.00 kB 0.016 618 883 谢谢! |
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