S32DS / S32K144: holding low the UART tx pin

[Joao_Roscoe]

I'm using UART to interface with a chip which implements a "safe mode" UART configuration in which the chip runs it's UART port with a standard, known parameters set - this allow recovering from configuration errors.

To trigger such "safe mode" I need to hold UART Tx at low, for a predefined, long time. What would be the best way to accomplish that? Changing the port configuration to GPIO, and than back to UART?

Best regards,

Joao

[lukaszadrapa]

Hi,

one option is to use break character which can be up to 15 bit times long. See the LPUART description for more details.

If it is not enough, then you can reconfigure the pin to GPIO.

Regards,

Lukas