Using UART and I2C on the same pins

[kj.obara]

Hi, I'm using Nucleo-L432KC board and I've got quite a few devices plugged in to it already. And I need to add another device using UART, but I'm using UART2 for debug output already and I2C1 (which always shares pins with UART1) for a couple i2C devices.

So my question is - Is it ok to put UART device with I2C devices on the same line (bus)? If I communicate with my I2C devices infrequently enough could occasional UART transmission on the same line make them malfunction? Or maybe that's complete lunacy...

Thank you for any suggestions.

[S.Ma]

you can use sda line for whatever you want as long as scl is low. that's safe. find another pin.

[Tesla DeLorean]

Seems like a bad plan, I2C device likely to get confused, have pattern sensitivity