I have a Raspberry Pi Model 2 running Raspbian Jessie. Attached to the Raspberry Pi is a GPS HAT from Adafruit. I think I have all the libs installed to get this to work, but for some reason I am getting question marks "?" when I run chronyc sources.
The goal is to get accurate time with no internet connection. The only time source is the GPS HAT.
Status printouts below.
Any hints/suggestions on getting this to work are greatly appreciated.
Thank you.
chronyc sources
210 Number of sources = 2
MS Name/IP address Stratum Poll Reach LastRx Last sample
===============================================================================
#? GPS 0 4 0 - +0ns[ +0ns] +/- 0ns
#? PPS 0 4 0 - +0ns[ +0ns] +/- 0ns
chronyc tracking
Reference ID : 7F7F0101 ()
Stratum : 8
Ref time (UTC) : Fri Feb 02 17:23:28 2018
System time : 0.000000004 seconds fast of NTP time
Last offset : +0.000000000 seconds
RMS offset : 0.000000000 seconds
Frequency : 7.218 ppm fast
Residual freq : +0.000 ppm
Skew : 0.000 ppm
Root delay : 0.000000000 seconds
Root dispersion : 0.000000000 seconds
Update interval : 0.0 seconds
Leap status : Normal
systemctl status chronyd
● chronyd.service - NTP client/server
Loaded: loaded (/lib/systemd/system/chronyd.service; enabled)
Active: active (running) since Fri 2018-02-02 00:18:07 UTC; 17h ago
Docs: man:chronyd(8)
man:chrony.conf(5)
Main PID: 961 (chronyd)
CGroup: /system.slice/chronyd.service
└─961 /usr/local/sbin/chronyd