How to disable Serial STDOUT after boot and start Serial CLI

I am using NetOS7.5 and the Digi Connect ME 9210 module. It only has one serial port and I am short on other pins. I would like to still be able to see the boot options as the program starts and any messages my code my display. After getting past a certain point I would like to be able to disable the stdout and re-use the serial port A for serial CLI for local programming and setup. Is this possible? I have tried to just set the CLI serial port to port A but it will not start without an error because of the port already being opened by stdout.

Look at file bsp\customize\dialog.c. IN that file is an API NACloseDialog. I believe that will close out the channel used by the dialog, restore all and put you in a position to reopen the serial channel for your own uses.