[libcamera-devel] How to detect camera after power on the raspberryPi.

[Naushir Patuck]

Dear Nomura-san,

Thank you for the information.   As per the comment on our forums here
<https://www.raspberrypi.org/forums/viewtopic.php?p=1655382#p1655382>, the
Raspberry Pi libcamera software stack will not work with imx477 or imx219
sensors unless you use an official Raspberry Pi camera board with the
crypto chip.  This is most likely why you are not able to get qcam working.

Thanks,
Naush

On Mon, 19 Oct 2020 at 13:32, <tetsuya.nomura at soho-enterprise.com> wrote:
>
> Dear Naush-san
>
> Thank you very much for your prompt reply.
>
> I'll answer in line, below.
>
> Best Regards,
> ================================
>   Tetsuya NOMURA
> ================================
>  Soho Enterprise Ltd.
>  4-11-26 Gent BLDG 2F, Asahi-cho, Atsugi-shi,
>  Kanagawa, Japan  243-0014
>  URL: https://soho-enterprise.com
>  Mail: tetsuya.nomura at soho-enterprise.com
>  Phone: +81-90-1839-1135
> ================================
>
>
> -----Original Message-----
> From: Naushir Patuck <naush at raspberrypi.com>
> Sent: Monday, October 19, 2020 7:09 PM
> To: tetsuya.nomura at soho-enterprise.com
> Cc: David Plowman <david.plowman at raspberrypi.com>;
libcamera-devel at lists.libcamera.org
> Subject: Re: [libcamera-devel] How to detect camera after power on the
raspberryPi.
>
> Dear Nomura-san,
>
> Could you provide more details on this board please?  I could not gather
any information from the website you linked.
>
> (Soho Nomura)Sorry for the lack of information.
> I'm using my own camera board without Raspi official crypt chip.
> And Transceiver chips are TI DS90UB953-Q1/DS90UB954-Q1,
> https://www.ti.com/product/DS90UB953-Q1
> https://www.ti.com/product/DS90UB954-Q1
>
> Connection of the devices:
> IMX219 module <-> original camera board <-> UB953 serializer <-> serial
cable <-> UB954 de-serializer <-> RaspberryPi 4 MIPI CSI port.
>
> UB953/UB954 can pass the I2C communication as if IMX219 sensor were
directly connected to RaspberryPi
> after configuring the transceiver chips.
> I am configuring(programing) them by shell script of i2cset command like
attached.
> But the device tree information as been already finalized before running
the sh script.
>
>
> Firstly, are you using an official Raspberry Pi Camera v2 board on the
other end of this link?  How is the transceiver chip programmed?
> (Soho) Using the original sensor board and run the sh script.
> After run the script, I run the camera application to configure IMX219
and display the image with SW ISP.
>
> Also, what application are you using when you say that you can get RAW
images out of your setup?
> (Soho) We have made the raw capture application based on "dcraw".
>
> Finally, I should note, that this type of questions might possibly be
more suited for the Raspberry Pi Camera forums
> (https://www.raspberrypi.org/forums/viewforum.php?f=43) and not the
libcamera mailing list - assuming it is related to the hardware setup you
are using.
>
> (Soho)
> I understand. I'll do so.
>
> Many thanks,
> Naush
>
> On Mon, 19 Oct 2020 at 10:38, <tetsuya.nomura at soho-enterprise.com> wrote:
> >
> > Dear Sirs.
> >
> > May I have your favor about initialization of the RaspberryPi and the
camera?
> >
> > I'm now evaluating the camera extension board of FPD LINK III
technology to extend the camera cable for 2~3m from the RaspberryPi.
> > https://soho-enterprise.com/2020/10/11/post-866/
> >
> > This board can pass the I2C communication to IMX219 after configuring
> > the transceiver chip, However, after configuration and run the qcam,
> > it seems the qcam program does not detect the IMX219 And I cannot start
the camera even I designate the image sensor name.
> >
> > I can start the IMX219, get the RAW image by our own program and see
the image.
> > Then if qcam can send the necessary command to IMX219 when start
> > running the qcam, I think I can see the image through qcam program.
> >
> > It would be great if you could give us an advice to solve it.
> > I appreciate your kind help in advance.
> >
> > Best Regards,
> >
> > NOMURA
> >
> > ================================
> >   Tetsuya NOMURA
> > ================================
> >  Soho Enterprise Ltd.
> >  4-11-26 Gent BLDG 2F, Asahi-cho, Atsugi-shi,  Kanagawa, Japan
> > 243-0014
> >  URL: https://soho-enterprise.com
> >  Mail: tetsuya.nomura at soho-enterprise.com
> >  Phone: +81-90-1839-1135
> > ================================
> >
> >
> >
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