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January 26, 2020 at 9:24 am #14177
johnsom
Participant
“More than 100 frame errors, UART RX was disabled” is usually caused by the serial port echoing data back, which is the default (at least on Ubuntu).
Try: /usr/bin/stty -F /dev/serial0 -echo
After a bit those messages should stop.
I have set this up as a udev rule: https://github.com/johnsom/rasp-gps-ntp/blob/master/udev/09.ttyAMA0.rules