STM32L496AE DCMI Confusion about camera capability

[Atilla Mete Turedi]

Posted on October 18, 2017 at 15:55

Dear community,

I got the following statement from the reference manual for STM32L496 (RM0351) and it confuses me;

This interface is for use with black & white cameras, X24 and X5 cameras, and it is assumed that all preprocessing like resizing is performed in the camera module.

So does this mean this interface was not meant for color cameras? I mean it supports RGB and YCbCr, why does it have this statement?

Can someone please clarify this for me?

ps: I was planning to use an OV5640.

Best Regards,

Mete

#stm32l4 #stm32l496ae #stm32l496 #dcmi #camera

[Imen.D · Accepted solution]

Posted on October 18, 2017 at 16:50

Hello,

This is confused line!

I confirm the STM32L496 interface supports RGB and YCbCr and color cameras.

Have a look to this application note

http://www.st.com/content/ccc/resource/technical/document/application_note/group0/c0/ef/15/38/d1/d6/49/88/DM00373474/files/DM00373474.pdf/jcr:content/translations/en.DM00373474.pdf

: Digital Camera Interface (DCMI) on STM32 MCUs.

Best Regards

Imen

[Tesla DeLorean]

Posted on October 18, 2017 at 17:00

It is a high bandwidth data pipe, what the data actually represents is irrelevant.

The camera controls the bit and data formatting, along with the framing. You'll have to process the data in memory based on your understanding of how the camera delivers it.

[AV V.1]

Hi,

I saw the discussion.

In our current project we are also using  STM32L4A6 processor and Digital Camera through DCMI Interface.

Instead of OV5640, we are using MT9D111 camera module. We integrated and tested, hardware part working fine.

Getting some data but not a valid image. After our assessment some issues are there in DCMI &DMA configaration for STM32L4A6.

So let me know anyone previously tried this combination and succeeded. If yes, could you please share the details (Driver/Firmware).

Looking forward to hear from you.

Regards,

Ameesh