I am working on a project and I am trying to connect a GPS receiver to the RPi through uart and a TNC-Pi (Terminal Node Controller) Both of the instructions want me to use "ttyAMA0" and move bluetooth to "ttyS0". It is imperative that I do not change the TNC at all, so I will need to change the port for the GPS. How do I do this?
TNC-Pi instructions go to pg 14
Adafruit Ultimate GPS for RPi UART
Edit:
After doing a little research I can use a SPI-to-UART chip, but still have no idea as of yet how that is going to work