doc(doc/time):Document time tracking setup

[EVA-2020-02.git] / doc / location / README.org

diff --git a/doc/location/README.org b/doc/location/README.org
index 4bbecfd143b6da020e6729c0ef4c6062c2934a97..3676e3225b0afb712144610b98804a02690da9ad 100644 (file)
--- a/doc/location/README.org
+++ b/doc/location/README.org
@@ -5,7 +5,7 @@
 ** About
 This document was created by Steven Baltakatei Sandoval on
 ~2020-06-29T12:14Z~ under a [[https://creativecommons.org/licenses/by-sa/4.0/][Creative Commons BY-SA 4.0 license]]. It
-was updated by Steven Baltakatei Sandoval on ~2020-10-08T18:14Z~
+was updated by Steven Baltakatei Sandoval on ~2020-10-16T22:33Z~
 
 ** Narrative
 Ninfacyzga-01 records (logs) its position in time and space using a
@@ -27,12 +27,9 @@ file may be compressed by ~gzip~ and encrypted by ~age~. It is an
 executable file contained within this repository at ~exec/bklog~. It
 should be copied to ~$HOME/.local/bin~.
 
-~bkgpslog~ : A legacy bash script similar to ~bklog~ but narrower in
-scope in that it only records output from ~gpspipe~.
-
-~gpsd~ : A background daemon app capable of interfacing with the
-Ozzmaker BerryGPS-IMU's GPS submodule. Installed and initialized by
-~apt~.
+[[https://tracker.debian.org/pkg/gpsd][~gpsd~]] : A background daemon app capable of interfacing with the
+[[https://ozzmaker.com/berrygps-berrygps-imu-quick-start-guide/][Ozzmaker BerryGPS-IMU]]'s GPS submodule. Installed and initialized by
+~apt~. Should be installed along with the ~gpsd-clients~ package.
 
 ~gpspipe~ : A command line app that polls ~gpsd~ and produces a stream
 stdout consisting of GPS data lines in NMEA format. Installed via
@@ -121,20 +118,37 @@ serial?", answer ~No~.
 When prompted "Would you like the serial port hardware to be
 enabled?", answer ~Yes~.
 
-***** Configure ~gpsd~
+***** Setup ~gpsd~
 ~gpsd~ needs to know which serial port to look at for NMEA location
 data generated by the GPS unit. This can be done by modifying the
 ~gpsd~ configuration file at ~/etc/default/gpsd~.
 
 : sudo nano /etc/default/gpsd
 
-Change
+Make sure the following lines are present:
+
+#+BEGIN_EXAMPLE
+START_DAEMON="true"
+USBAUTO="false"
+DEVICES="/dev/ttyAMA0"
+GPSD_OPTIONS="-n"
+#+END_EXAMPLE
+
+NOTE: The ~DEVICES=~ line must be adjusted if the the ~ninfacyzga~
+device is configured to also track time.
+
+NOTE: The ~-n~ option causes ~gpsd~ to begin polling GPS devices
+without waiting for a client to connect. This is important if ~gpsd~
+provides data to other applications (ex: ~gpspipe~, ~ntpsec~,
+~chrony~).
+
+Restart ~gpsd~ via:
 
-: DEVICES=""
+: $ sudo systemctl restart gpsd.service
 
-to
+Run ~gpsmon~ to verify that location data is being recorded.
 
-: DEVICES="/dev/serial0"
+: $ gpsmon
 
 ***** Automatic Start Configuration
 It is recommended to create a daily ~cron~ job that executes a bash