range Pi 用户手册 深圳市迅龙软件有限公司版权所有
www.orangepi.cn 58 www.xunlong.tv
64 bytes from 14.215.177.38 (14.215.177.38): icmp_seq=3 ttl=56 time=6.26 ms
64 bytes from 14.215.177.38 (14.215.177.38): icmp_seq=4 ttl=56 time=7.27 ms
^C
--- www.a.shifen.com ping statistics ---
4 packets transmitted, 4 received, 0% packet loss, time 3002ms
rtt min/avg/max/mdev = 6.260/6.770/7.275/0.373 ms
3.16.
USB camera test
1) First insert the USB camera into the USB port of the Orange Pi development board
2) Use lsmod to check whether the system has automatically loaded the uvcvideo kernel
module
root@orangepi:~# lsmod
Module Size Used by
uvcvideo 106496 0
3) Then use v4l2-ctl (note that l in v4l2 is a lowercase letter l, not a number 1) command
to view the device node of the USB camera. From the output below, you can see that the
device node corresponding to the USB camera is /dev/video2. If you look The
USB-related video node is not found, indicating that the USB camera cannot be
recognized
root@orangepi:~# apt update
root@orangepi:~# apt install v4l-utils
root@orangepi:~# v4l2-ctl --list-devices
sun6i-csi (platform:camera):
/dev/video1
cedrus (platform:cedrus):
/dev/video0
USB 2.0 Camera: HD USB Camera (usb-1c1c000.usb-1):
/dev/video2
/dev/video3
To Next Page
Loading...
