Accessing the extension ports


Please suggest the connector part number for interfacing the extension ports.
Also what is port name for the UART? /dev/tty**?
The UART is running at 1.8V. I assume to interface with an arduino, a logic level shifter such as
will do, right?

Kind Regards,


still not connecting. I have tried /dev/ttyTHS1. still not working with the extension UART. This is the correct one?


It seems from the link and, the extension UART is the UART3 in TK1, which should be named /dev/ttyTHS2 in the Linux.

But /dev/ttyTHS2 never exist in the linux. Anyone can help?


Here is all the device listed after running find /dev/tty*

what can I do to enable /dev/ttyTHS2?