Arducam_64mp autofocus via libcamera-still

[Edward]

@dot.dot

I checked and found that the latest libcamera needs to be used with the latest kernel.

We will update our installation script later, the specific reasons I list below.

The new version of libcamera obtains the motor driver node through the following code.

Since there is no MEDIA_LNK_FL_ANCILLARY_LINK media link on version 5.10.92, the motor driver node cannot be obtained. So autofocus cannot be used.

MEDIA_LNK_FL_ANCILLARY_LINK Media Link Submission Record.

media: media.h: Add new media link type

v4l2 driver creates link submission record

media: v4l2-async: Create links during v4l2_async_match_notify()

You can see that the commit is in version 5.15.30 of the Raspberry Pi kernel.

So the current libcamera v0.0.12 version only supports Raspberry Pi kernel 5.15.30 and later.

Way to update:

sudo apt-get update
sudo apt-get upgrade

Then reboot