usb摄像头连接失败

• lszz

  Posts: 1

  Joined: 2025-09-28 5:59

  2025-09-28 6:16

  我使用Luckfox Pico Ultra连接usb 摄像头，直接把摄像头连接到板子的usb a口，终端输出

  Code: Select all

  [root@luckfox root]# [  197.083773] usb 1-1: new high-speed USB device number 6 using xhci-hcd
  [  197.233785] usb 1-1: device descriptor read/64, error -71
  [  197.503782] usb 1-1: device descriptor read/64, error -71
  [  197.773766] usb 1-1: new high-speed USB device number 7 using xhci-hcd
  [  197.923793] usb 1-1: device descriptor read/64, error -71
  [  198.193788] usb 1-1: device descriptor read/64, error -71
  [  198.313920] usb usb1-port1: attempt power cycle
  [  198.783771] usb 1-1: new high-speed USB device number 8 using xhci-hcd
  [  198.783895] usb 1-1: Device not responding to setup address.
  [  199.003809] usb 1-1: Device not responding to setup address.
  [  199.223766] usb 1-1: device not accepting address 8, error -71
  [  199.373779] usb 1-1: new high-speed USB device number 9 using xhci-hcd
  [  199.373904] usb 1-1: Device not responding to setup address.
  [  199.593816] usb 1-1: Device not responding to setup address.
  [  199.813759] usb 1-1: device not accepting address 9, error -71
  [  199.813989] usb usb1-port1: unable to enumerate USB device
  

  使用usb hub连接板子的usb a口，终端输出

  Code: Select all

  [root@luckfox root]# [  864.013783] usb 1-1: new high-speed USB device number 11 using xhci-hcd
  [  864.258085] hub 1-1:1.0: USB hub found
  [  864.258627] hub 1-1:1.0: 4 ports detected
  

  等到识别出usb hub后，再把摄像头连接到usb hub上，终端输出

  Code: Select all

  [root@luckfox root]# [  932.723798] usb 1-1.2: new high-speed USB device number 12 using xhci-hcd
  [  932.918027] uvcvideo: Found UVC 1.10 device Camera (0525:a4a6)
  [  932.927553] input: Camera: UVC Camera as /devices/platform/usbdrd/ffb00000.usb/xhci-hcd.0.auto/usb1/1-1/1-1.2/1-1.2:1.0/input/input1
  [  932.939111] udevd[897]: failed to execute '/lib/udev/v4l_id' 'v4l_id /dev/video21': No such file or directory
  [  932.964529] udevd[899]: failed to execute '/lib/udev/v4l_id' 'v4l_id /dev/video22': No such file or directory
  

  为什么需要加个usb hub才能识别到摄像头？
  
  我在板子上并联了两个220uf的电容，用功耗分析仪抓取了板子的电压跌落也没有发现异常

  

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