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JPark.28
Associate II
November 28, 2021
Solved

Conflict on STM32H745i-DISCO between ADC-IN10 (PC0) and ethernet MII?

  • November 28, 2021
  • 5 replies
  • 1583 views

In STM32CubeIDE 1.7.0, when I enable ethernet MII, I get a conflict on several ADC inputs, but in particular on IN10 (PC0) which is hardwired to the Arduino connector ARD_A0 and does not go anywhere near the ethernet interface.

Any ideas how this can be corrected?

Thanks

John

This topic has been closed for replies.
Best answer by TDK

The warning is letting you know that the IN11 pin is used by MII so IN10 can't be enabled in differential mode. You can enable it in single-ended mode without issue.

5 replies

JPark.28
JPark.28Author
Associate II
November 28, 2021

Oh, and some more details - the ethernet interface is mapped to the M7 and the ADCs are mapped only to the M4 core.

The code generation runs without error and the code looks like it will work.

I'm just curious why the conflict is being generated!

MM..1
Super User
November 28, 2021

How conflict you mean red or yellow?

JPark.28
JPark.28Author
Associate II
November 28, 2021

Hi MM

Yellow and a message "IN10 Conflict with ETH:Mode MII"

TDK
TDKBest answer
November 28, 2021

The warning is letting you know that the IN11 pin is used by MII so IN10 can't be enabled in differential mode. You can enable it in single-ended mode without issue.

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JPark.28
JPark.28Author
Associate II
November 28, 2021

Aha!

Thanks TDK - slightly more verbose warnings would be useful!

Kind regards

John