RPi 4 Serial UART for GPS input

[crocks32]

OK Update, as follows

I edited my config.txt file to include

dtoverlay=uart5,txd1_pin=08,rxd1_pin=10

re-ran 

sudo cat /dev/ttyAMA0

Got illegible GPS data.

Edited the serial device connection to signal K and set the baud to 9600.

Still no throughput to signal K.

hard Set the serial Baud rate to 9600 in terminal using 

stty -F /dev/serial0 raw 9600 cs8 clocal -cstopb

reboot

and...boom!

Problem solved. working like a charm. (5 total signal k throughput deltas/second and 15 signal k paths)

 

[url=https://www.raspberrypi.org/documentation/computers/configuration.html#primary-uart][/url]