F767 and LTDC DCMI

[Sebastian Gniazdowski]

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

[Amel NASRI]

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

[Sebastian Gniazdowski]

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