STM32MX Cube pins are changing without a notice!

[BHell.1]

I'm using STM32MX Cube to assign pins for different features.

I have a lot of communication ports and GPIO:s enabled in my STM32H750.

I have prototype 1 working, I noticed that when I add for instance an extra I2C other pins move without notice. For instance, LTDC RGB pin R0 moves to another pin on STM32.

I have also seen that LTDC is disabled suddenly wihtout any notice.

Quesiton. Is it possible to lock current pins in STM32MX cube?

Else How do I see all pins that changed when I add a new I2C? is there any log file?

This is a bit stupid from my point of view. And it may cause a lot of issues in next revision of this board if I dont tanke my time and check all 240 pins...

Thanks,

[Bob S]

Yes - right-click on the pin and click on "signal pinning". You should then see a thumb tack icon on that pin. This gets tedious on large pin count devices. A possibly easier way is to click on the "\/ Pinout" menu in the light blue bar across the top, then select the "Pins/SIgnals options" menu. This brings up a dialog that lists all the pins. You can then click on each line in the "thumb tack" column to pin each signal. Still tedious but quicker than right-clicking on each pin in the chip view.

[Bob S · Accepted solution]

Hmmm... just saw the "Keep current signals placement" option in the "Pinout" pop-up menu I mentioned above. This does NOT put thumb tacks on all the pins but does claim to prevent Cube from moving all signals. One click and you are done.

[BHell.1]

ok, thanks.

That was the setting I was looking for:-)

Have a great day!