STM32F7 DCMI support for output mode?

[arne]

Posted on July 02, 2015 at 12:21

Reading the reference manual RM0385 (DocID026670 Rev 1) in the introduction to the DCMI on p. 478 I encountered this:

''[...] This interface is also able to transmit a parallel data flow, allowing it to emulate a camera module interfacing with another camera interface.

It may also be used as a generic synchronous parallel inteface ensuring a high data rate

transfer, in receive or in transmit mode.[...]''

However, I find no mention of the transmit mode in the remainder of the chapter. Can someone please clarify?

#stm32f7 #dcmi

[Amel NASRI]

Posted on July 10, 2015 at 13:10

Hello krueger.arne,

The STM32F7 DCMI doesn't support the output mode.

So, we shouldn't speak about transmission for DCMI interface.

This will be fixed in next revision of RM085.

Thanks for reporting this error.

-Mayla-

[MasterT]

Hi,

I see, that RM0385 is fixed now.

I have the same confusion with stm32F446, doc. RM0390:

"This interface is also able to transmit a parallel data flow, allowing it to emulate a camera module interfacing with another camera interface."

Paragraph 15.1, page 423.

My understanding, that is also misleading info and should be corrected as well.

[Tesla DeLorean]

It's a pity, because you'd have thought that would have been useful functionality.

For output you can drive GPIO (BSRR) from a pattern buffer via TIM+DMA(2)