Hello gu_dingjie@163.com,
I'm not sure I understand correct, but if you are asking for serial support (COM), S32K14x toolbox has support for Low power UART (serial communication). You can find examples within the S32_Examples folder. You can read more here about the peripherals that we support, how to install our toolbox, how to get a license, etc.
If you have more questions or encounter issues, please let us know.
Kind regards,
Razvan.
