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trouble shooting #40

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trouble shooting #40

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FAQ
christianrauch Apr 28, 2024
28c73bb
v4l2-ctl
christianrauch Dec 11, 2024
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16 changes: 16 additions & 0 deletions README.md
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Expand Up @@ -159,3 +159,19 @@ and then run the node with libcamera and ROS debug information in `gdb`:
```sh
LIBCAMERA_LOG_LEVELS=*:DEBUG ros2 run --prefix 'gdb -ex run --args' camera_ros camera_node --ros-args --log-level debug -p width:=640 -p height:=480
```


### Q&A

Q1: The node exits with `no cameras available`.
> A1: Check your camera connection and test with the libcamera examples that the camera is supported and accessible.

For the OV5647 (Camera Module v1) `v4l2-ctl --list-devices` should list the `unicam`
```
unicam (platform:3f801000.csi):
/dev/video0
/dev/media0
```

Q2: The node exits with `Failed to allocate buffers`.
> A2: The requested image size and pixel format may be too large. Set `width` and `height` to a lower resolution or chose a compressed pixel format.