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    Topics created by xingzhan2012

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      PC 端 ADB 连接到 Cool Pi 4B rknn_server失败
      AI Algorithm • • xingzhan2012

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      @大法师 先支持HQ Camera吧，视觉应用是大头

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      ubuntu22.04 的VNC不及树莓派4B的流畅
      Ubuntu • • xingzhan2012

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      @ccjjww1222 V11版本是板载天线。V10是外置天线，你的是哪个版本

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      官网源码不支持树莓派官方最新摄像头IMX477R和IMX708
      Peripheral • • xingzhan2012

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      @大法师 建议尽快支持一下树莓派的HQ Camera，传感器型号是IMX477R，现在这款摄像头很火，可以匹配各种不同的镜头。IMX708支持自动对焦，是新出的产品。

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      官方Github上的代码居然编译通不过？
      Ubuntu • • xingzhan2012

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      可以通过了，就因为文件路径存在空格

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      ubuntu22.04 启动后SD卡文件管理打不开
      Ubuntu • • xingzhan2012

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      @大法师 是权限问题，修改/media/coolpi文件夹的用户为coolpi就可以了

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      mini DP 诱骗器无效
      Pi 4B • • xingzhan2012

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      @jack_admin 已经成功

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      Cool Pi 4B 如何使用GPIO啊，树莓派的HQ Camera如何使用呢？
      Ubuntu • • xingzhan2012

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      @george 试了不能用

      gst-launch-1.0 v4l2src device=/dev/video11 ! image/jpeg, width=1920, height=1080, framerate=25/1 ! jpegparse ! mppjpegdec ! kmssink plane-id=88
      Setting pipeline to PAUSED ...
      ERROR: from element /GstPipeline:pipeline0/GstKMSSink:kmssink0: Could not get allowed GstCaps of device
      Additional debug info:
      ../sys/kms/gstkmssink.c(1183): gst_kms_sink_start (): /GstPipeline:pipeline0/GstKMSSink:kmssink0:
      driver does not provide mode settings configuration
      ERROR: pipeline doesn't want to preroll.
      ERROR: from element /GstPipeline:pipeline0/GstKMSSink:kmssink0: GStreamer error: state change failed and some element failed to post a proper error message with the reason for the failure.
      Additional debug info:
      ../libs/gst/base/gstbasesink.c(5878): gst_base_sink_change_state (): /GstPipeline:pipeline0/GstKMSSink:kmssink0:
      Failed to start
      ERROR: pipeline doesn't want to preroll.
      Failed to set pipeline to PAUSED.
      Setting pipeline to NULL ...
      Freeing pipeline ...

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      ubuntu22.04 连接蓝牙音箱，播放网页视频，断断续续卡顿
      Pi 4B • • xingzhan2012

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      @george fc2f87b3-499a-4776-870a-a2561f6f19d9-image.png

      原因找到了，是configuration 那里要设置选择HFP

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      如果同时给emmc和sd卡刷系统，如何指定系统从emmc或sd卡启动
      Pi 4B • • xingzhan2012

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      @jack_admin 那就没有问题了，只要优先从tf卡启动就行，我已经通过tf卡启动ubuntu22.04，然后通过dd命令将img写入到emmc中，并且启动成功。这样就再也不用把emmc从板子上取下来了，yeah！谢谢

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      EMMC 读卡失败，可以直接插板子上，SD卡启动系统后识别出来吗
      Pi 4B • • xingzhan2012

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      大法师

      @xingzhan2012 可以用cool pi ubuntu系统，直接dd 刷系统到其他存储介质，比如emmc

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