STM32F7 DCMI_DR always zero

[ferhatyol-23]

Posted on February 10, 2016 at 12:21The original post was too long to process during our migration. Please click on the attachment to read the original post.

[ferhatyol-23]

Posted on February 11, 2016 at 10:53

hi all

Do you have any idea? What could be the problem?

[Avner Gidron]

Posted on June 18, 2017 at 07:14

Hi,

I have the same problem in my STM32F769 eval. Have you figured it out? in my case I see that the DMA gets FIFO error. Is that the case tou have?

Thanks,

Avner

[wang dobby]

Posted on March 07, 2018 at 09:28

Hi,

I think you may have fixed the issue, right?

Unfortunately, I am using ov9655 and STM32H743Zi Nucleo board and trying to capture pictures. But I have the similar issue now, I can get only 0x00 data from DCMI_DR, even if Vsync, Hsync, frame interrupts works, and it seems data with 

logic analyzer on D0~D7.

Can you please help to introduce how did you fix it in your side? Thanks in advance and hope your feedback soon.

Regarsds

Dobby

[Roberto Fratta]

Posted on June 29, 2018 at 10:14

Hi all,

Same issue for me, someone has solved?

[Imen.D]

Posted on June 29, 2018 at 12:52

Hello All,

I recommend to check the GPIO configuration, as well as the DCMI.

Also, check all control signals: PIXCLK, HSYNC and VSYNC.

With Regards,

Imen