Can you help me with step by step chrony setup in Raspberry Pi, please?
Firstly, The summery of the problems I am facing:
1.
While commanding chrony from repository (apt-get install chrony) its installing v1.6 and I don’f find ‘chronyd’ anywhere. ‘systemctl status chronyd’ says, not found, inactive, dead. Though I can command ‘chronyc sources’ shows my servers but not GPS PSS servers as following:
===============================================================================
#? GPS 0 4 0 10y +0ns[ +0ns] +/- 0ns
#? PPSS 0 4 0 10y +0ns[ +0ns] +/- 0ns
^* time.campus.qut.edu.au 3 5 377 1 -103us[ -107us] +/- 15ms
(I put ‘timepps.h’ in ‘/user/include’ and my chrony configuration file is in ‘/etc/chrony/chrony.conf’, is that any issue?)
A detailed set up of this attempt is given below.
While trying to manually installing Chrony by downloading v3.1, I see after ./configure, ‘make’ command shows many ‘missing’ like ‘gcc -02 -g missing-prototypes -wall pthread’. Then
My Detailed Setup:
System: Rpi3 and Jessie.
First I have made some initial settings in two stages, are:
Stage:1 In the first stage in a fresh Jessie raspbian I made the following changes:
a) In the boot configuration file (/boot/conf.txt) I stop Linux putting serial console by removing 'console=serial0,115200'
b) I load pps-gpio to kernel module (sudo sh -c "echo pps-gpio >> /etc/modules"
c) Told to use GPIO18 as the PPS input by inputting "dtoverlay=pps-gpio,gpiopin=18" into config.txt file.
d) I added this three additional command to the config.txt file, "core_frequency=300" "force_turbo=1" and "enable_uart=1".
Stage:2 I installed 'picocom' and 'pps-tools' to see whether my GPS and PPS are from the receiver is functioning?
a) 'picocom -b 9600 -f n /dev/ttyS0' commands start to show output from GPS module that essentially starts with $GPRMC
b) 'ppstest /dev/pps0' command also executes successfully showing, 'ok found 1 sources (s) bla bla
-------------means, both GPS and PPS of the receiver are interfaced and active with the system.
[Note: From this point onward, if I install NTP, it get fix with the drivers and works fine.] After the initial set up I tried to follow the instruction given here in this link: http://catb.org/gpsd/gpsd-time-service-howto.html#_feeding_chrony_from_gpsd
Now, I installed chrony and gpsd into my system. And always ensured that Chrony is Running before gpsd.
allow 0/0
refclock SHM 1 refid GPS precision 1e-1 offset 0.9999 delay 0.2 refclock SOCK /tmp/chrony.ttyS0.sock refid PPSS
But I don't get any result. It is sure that chrony does not get feed from GPSD.
chronyc sources results are look likes:
pi@raspberrypi:~ $ chronyc sources
210 Number of sources = 4
MS Name/IP address Stratum Poll Reach LastRx Last sample
===============================================================================
#? GPS 0 4 0 10y +0ns[ +0ns] +/- 0ns
#? PPSS 0 4 0 10y +0ns[ +0ns] +/- 0ns
^* time.campus.qut.edu.au 3 5 377 1 -103us[ -107us] +/- 15ms
What I am missing? Any suggestion please?
