How can I disable the PSSI in stmCubeIDE?

Maposaagsky · ‎2025-10-07

hello my frends
now i habe a new doubt!
i am traing to enable the DCMI in the STM32H743BGT6 whit the stmcubeIDE (in the cubeMX section)

and as you can see in the image above, the program does not let me enable the DCMI because its resources are used by the "PSSI" (which I NEVER enabled, and I imagine that it is an initial configuration by default)
(with fedora 41 on my PC) with this version:

and according to this tutorial: https://community.st.com/t5/stm32-mcus/how-to-configure-and-use-the-pssi-on-the-stm32h7/ta-p/49811

I should be able to disable the PSSI (which I don't want) in the section you see in the tutorial image
but I can't because that PSSI is NOT in that part, nor can I find where it is to DISABLE it anywhere in my stmcubeIDE (as you can see in the first image I posted)
the question is: where will I be able to disable PSSI to enable DCMI?:crying_face:

Saludos!...

Souhaib MAZHOUD · ‎2025-10-07

Hello @Maposaagsky

I am not sure about the error message that occurred the conflict should not be with PSSI. could you please attach your IOC to investigate further.

KR,

Souhaib

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Maposaagsky · ‎2025-10-07

of course,
I hope this one will serve to you

mƎALLEm · ‎2025-10-07

Hello,

There is no PSSI interface on STM32H743 part number.

I opened your ioc file with the standalone CubeMx and as you can see there is no PSSI in the list.:

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Maposaagsky · ‎2025-10-07

yes i know that the pssi is not in these options like we can see in the imagen, but the cuestion is, why in the program he won't let me put or enable the DCMI, and does he mention that about the PSSI?,
the only thing I want is to be able to enable the DCMI

Souhaib MAZHOUD · ‎2025-10-07

Hello @Maposaagsky

Using your IOC I am not able to reproduce the same behavior, I was able to enable DCMI correctly,

The result is based on Windows, but I'll verify if it's different on Fedora 41.

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mƎALLEm · ‎2025-10-07

1- But in the image you shown at the beginning there is a PSSI in the list! and the question was why there is a conflict between DCMI and PSSI.

2- With your ioc file, I can enable DCMI without any issue as there is no PSSI at all.

Now the question is what CubeIDE version are you using?

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Souhaib MAZHOUD · ‎2025-10-07

Hello @Maposaagsky

Even with Fedora the issue is not reproducible on my side. Otherwise, I suggest that you try to enable the DCMI first and then enable the other peripherals.

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Maposaagsky · ‎2025-10-07

1- But in the image you shown at the beginning there is a PSSI in the list! and the question was why there is a conflict between DCMI and PSSI.
sorry, this is a imagen from this toturial, not from my computer:
https://community.st.com/t5/stm32-mcus/how-to-configure-and-use-the-pssi-on-the-stm32h7/ta-p/49811

2- With your ioc file, I can enable DCMI without any issue as there is no PSSI at all. Now the question is what CubeIDE version are you using?
this version: