=============獲取設備描述符
bRequestType:80
bRequest :06
wValue :0100
wIndex :0000
wLength :0040 期望長度64字節
usb bus Reset總線復位我的usb設備
=============發出為我的usb設備設置地址指令,我的usb地址被設置為0x04
bRequestType:00
bRequest :05
wValue :0004
wIndex :0000
wLength :0000
=============獲取配置描述符
bRequestType:80
bRequest :06
wValue :0200
wIndex :0000
wLength :0009 期望長度9字節
=============嘗試讀取配置描述符0xff長度
bRequestType:80
bRequest :06
wValue :0200
wIndex :0000
wLength :00ff
=============嘗試讀取配置描述符0x12長度,不會超時
bRequestType:80
bRequest :06
wValue :0200
wIndex :0000
wLength :0012
=============嘗試讀取配置描述符0x09長度,正好
bRequestType:80
bRequest :06
wValue :0200
wIndex :0000
wLength :0009
=============讀取配置描述符總長度0x22
bRequestType:80
bRequest :06
wValue :0200
wIndex :0000
wLength :0022
=============設置配置,將配置生效,使能cpu上的endpoint端點
bRequestType:00
bRequest :09
wValue :0001 將配置數值設置為1
wIndex :0000
wLength :0000
=============
bRequestType:00
bRequest :09
wValue :0001
wIndex :0000
wLength :0000
=============
bRequestType:81 讀取接口
bRequest :06 讀取接口描述符
wValue :2200 讀取報告描述符
wIndex :0000
wLength :0072
=============
bRequestType:81
bRequest :06
wValue :2200
wIndex :0000
wLength :0072
============= 讀取配置描述符
bRequestType:80
bRequest :06
wValue :0200
wIndex :0000
wLength :0022