Ok update: I got in the mail today another TNC-pi that I ordered for another project. I put it together and got it on the pi. New install of OS. I am trying to reconfigure to use i2c. When I run getparams I get:
Using Serial port /dev/ttyO1
Com Open Failed: No such file or directory
I can seem to get it to use port /dev/ttyAMA0. Ive been through all the documentation and I cant figure it out.
How to I get getparams to use /dev/ttyAMA0?