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F767 and LTDC DCMI

Sebastian Gniazdowski
Associate III
Posted on January 14, 2017 at 22:08

In CubeMX, when I select STM767ZITx, and enable DCMI, then LTDC turns red and is said to be in conflict with DCMI. That's very surprising � is there really no way to capture camera output and display it on a LCD? I saw such projects on the internet, they were for STMF4, though. However I doubt that F7 would have more restricted configuration than F4. Is LCD really blocked?

Best regards,

Sebastian

#f767zl #ltdc #dcmi #f7
2 REPLIES 2
Amel NASRI
ST Employee
Posted on January 15, 2017 at 07:57

Hi

Gniazdowski.Sebastia

‌,

Having the LTDC turned red in the CubeMX interface means that there is a conflict between used pins for LTDC and other selected peripherals.

Check the datasheet of your product to look for another pins combination or review the configuration of both LTDC & DCMI to find a more suitable one for your application (that reduces the number of mandatory pins for example...).

If no workaround found, please share your ioc file for farther investigation.

-Amel

To give better visibility on the answered topics, please click on Accept as Solution on the reply which solved your issue or answered your question.

Posted on February 04, 2017 at 10:48

I've read DM00273119 and it turns out I would need larger package than 144 that my Nucleo has. For example DCMI_PIXCLK collides with LTDC_G2, and the possible LTDC_G2 alternative is at PH13, while Nucleo-144 has PH up to PH1 only.

Clicking on pins in CubeMX also reveals their alternate functions.

Best regards,

Sebastian