USB 장치용 C++를 사용하여 프로그램을 작성하고 포트 번호를 표시하겠습니다. 터미널에 입력하면 root@raminfp# usb-device출력에 표시됩니다.
T: Bus=02 Lev=01 Prnt=01 Port=00 Cnt=02 Dev#= 3 Spd=12 MxCh= 7
Port:00아니면 무슨 뜻인가요 Port:01?
답변1
https://www.mjmwired.net/kernel/Documentation/usb/proc_usb_info.txt
T: Bus=dd Lev=dd Prnt=dd Port=dd Cnt=dd Dev#=ddd Spd=dddd MxCh=dd
118 | | | | | | | | |__MaxChildren
119 | | | | | | | |__Device Speed in Mbps
120 | | | | | | |__DeviceNumber
121 | | | | | |__Count of devices at this level
122 | | | | |__Connector/Port on Parent for this device
123 | | | |__Parent DeviceNumber
124 | | |__Level in topology for this bus
125 | |__Bus number
126 |__Topology info tag