Instantiating a UART for just read or write only;

[Flipje1955]

In the "issues" domain, a topic popped up addressing:

"RP2 SPI: Instantiating with spi=None does not behave sensibly. #11082"

Translating that to a UART situation, is it "possible" to create a read- or write UART and use the other pin elsewhere?

When feeding None as parameter when instantiating the UART, a None for either Tx or Rx pin is overruled, but not reported as error. Toggling the unused pin appears ok.