Convert TCP on RS232 interface on WP76

I would like to prepare the WP76 demonstration SW using mangOH green board.
WP7605 (mangOH) convert from text (ASCII code) data on RS232C to TCP packet.
Could you please let us know good sample SW?

Note:
I bought IoT slot for RS232C and detect WP76 module for this slot.

Please see this application note: