STM32CubeMX USART[BUG]: setting GPIO to an open drain mode

[Eugene S.]

Hi,

I'd like to use USART for multiprocessor communication. For this I have to configure the TX pin to an open drain mode. But this option is not available:

MCU: STM32F446ZEH6

STM32CubeMX: 5.1.0

Best regards,

Eugene

[S.Ma]

Go beyond cubeMx and search in the source code GPIO_MODE_AF_OD

Just hack at C HAL level .

[Eugene S.]

Thanks, I know about this. But manual changes will be lost every time when I generate code with CubeMX. Is there any other option?

[S.Ma]

Use user code area in source to override cubemx initialization or wait for cubemx fix?

[Eugene S.]

Yes, but that will cause an unwanted voltage glitch on the pin, because it will be configured 2 times.

Is there a way to modify any CubeMX configuration file to get this option? If not, then, would be good that this bug will be fixed in future release.