Just curious if this works.
cd /tmp
wget https://github.com/blackfuel/asuswrt-merlin-addon/raw/master/staging/bin/ntpd
opkg update
opkg install coreutils-sha256sum
[ "$(sha256sum ntpd | cut -d' ' -f1)" == "885f0ab1f7885cf8772be02a81a9ad724bf48ae2acce23377496c076b3f27693" ] && echo good || echo bad
# ./ntpd --versionJul 26 15:22:01 ntpd[1113]: ntpd 4.2.8p9-win@1.3728 Sat Mar 18 09:20:25 UTC 2017 (2): Starting
Jul 26 15:22:01 ntpd[1113]: Command line: ntpd -c /jffs/etc/ntp.conf
Jul 26 15:22:01 ntpd[1119]: proto: precision = 1.652 usec (-19)
Jul 26 15:22:01 ntpd[1119]: Listen normally on 0 lo 127.0.0.1:123
Jul 26 15:22:01 ntpd[1119]: Listen normally on 1 br0 192.168.1.1:123
Jul 26 15:22:01 ntpd[1119]: Listening on routing socket on fd #18 for interface updates
Jul 26 15:22:01 ntpd[1119]: refclock 127.127.20.0 isn't supported. ntpd was compiled without refclock support.
Jul 26 15:22:01 ntpd[1119]: 127.127.20.0 local addr 127.0.0.1 -> <null>
Jul 26 15:22:01 ntpd[1119]: refclock 127.127.28.0 isn't supported. ntpd was compiled without refclock support.
Jul 26 15:22:01 ntpd[1119]: 127.127.28.0 local addr 127.0.0.1 -> <null>
Jul 26 15:22:02 GoNz0: Started ntpd from .
Try my script to set your router clock, here: https://www.snbforums.com/threads/usb-gps-instead-of-ntp.39806Also wondering what that scripts meant to do?
opkg update
opkg install coreutils-stty
stty -F /dev/ttyACM0 9600 raw -clocal -echo icrnl
cat /dev/ttyACM0I tried your script yesterday and it still failed to see the GPS?
I fixed the GPS script today. No more $GPTXT messages. And, it's all in one script now.
Not had the chance (or will power) to do this yet, I need a few days not staring at router console windows to regain my sanity
I'm starting over using a Raspberry Pi with Arch Linux. It has fast startup because there is no graphical window environment. It boots in under 10 seconds.Not had the chance (or will power) to do this yet, I need a few days not staring at router console windows to regain my sanity
If this fails I may look into doing it on my windows server instead or sack it off as a bad idea
ACTION=="add", KERNEL=="ttyACM*", SUBSYSTEM=="tty", ATTRS{idProduct}=="01a7", ATTRS{idVendor}=="1546", RUN+="/bin/bash /lib/udev/usbgps-start /dev/ttyACM%n"
ACTION=="add", KERNEL=="rtc*", RUN+="/bin/hwclock --hctosys --rtc /dev/rtc%n"#!/bin/bash
GPS_DEVICE="$1"
# NTP server Generic NMEA driver
rm -rf /dev/gps0
ln -s $GPS_DEVICE /dev/gps0
# configure the u-blox7 GPS to report only $GPZDA
stty -F $GPS_DEVICE 9600 raw -clocal -echo icrnl
ubx_write() {
local cmdline=" $@"
local fmtline="${cmdline// /\\x}"
printf $fmtline >$GPS_DEVICE
}
ubx_write "B5 62 06 02 0A 00 01 00 00 00 00 00 00 00 00 87 9A 77" # Turn off info messages
ubx_write "B5 62 06 01 08 00 F0 00 00 00 00 00 00 00 FF 23" # Disable: NMEA GxGGA
ubx_write "B5 62 06 01 08 00 F0 01 00 00 00 00 00 00 00 2A" # Disable: NMEA GxGLL
ubx_write "B5 62 06 01 08 00 F0 02 00 00 00 00 00 00 01 31" # Disable: NMEA GxGSA
ubx_write "B5 62 06 01 08 00 F0 03 00 00 00 00 00 00 02 38" # Disable: NMEA GxGSV
ubx_write "B5 62 06 01 08 00 F0 04 00 00 00 00 00 00 03 3F" # Disable: NMEA GxRMC
ubx_write "B5 62 06 01 08 00 F0 05 00 00 00 00 00 00 04 46" # Disable: NMEA GxVTG
ubx_write "B5 62 06 01 08 00 F0 06 00 00 00 00 00 00 05 4D" # Disable: NMEA GxGRS
ubx_write "B5 62 06 01 08 00 F0 07 00 00 00 00 00 00 06 54" # Disable: NMEA GxGST
ubx_write "B5 62 06 01 08 00 F0 08 01 01 01 01 01 00 0C 6F" # Enable: NMEA GxZDA
ubx_write "B5 62 06 01 08 00 F0 09 00 00 00 00 00 00 08 62" # Disable: NMEA GxGBS
ubx_write "B5 62 06 01 08 00 F0 0A 00 00 00 00 00 00 09 69" # Disable: NMEA GxDTM
ubx_write "B5 62 06 01 08 00 F0 0D 00 00 00 00 00 00 0C 7E" # Disable: NMEA GxGNS
ubx_write "B5 62 06 01 08 00 F0 0E 00 00 00 00 00 00 0D 85" # Disable: NMEA GxTHS
ubx_write "B5 62 06 01 08 00 F0 0F 00 00 00 00 00 00 0E 8C" # Disable: NMEA GxVLW
#ubx_write "B5 62 06 09 0D 00 00 00 00 00 FF FF 00 00 00 00 00 00 01 1B A9" # Save settings to BBR (battery-backed RAM)
ubx_write "B5 62 06 09 0D 00 00 00 00 00 FF FF 00 00 00 00 00 00 03 1D AB" # Save settings to BBR,Flash
#sleep 1
systemctl restart ntpd# By default, the server allows:
# - all queries from the local host
# - only time queries from remote hosts, protected by rate limiting and kod
restrict default kod limited nomodify nopeer noquery notrap
restrict 127.0.0.1
restrict ::1
# Location of drift file
driftfile /var/lib/ntp/ntp.drift
logfile /var/log/ntp.log
# Configure orphan mode to be stratum 14
# https://www.eecis.udel.edu/~mills/ntp/html/orphan.html
# https://www.eecis.udel.edu/~mills/ntp/html/miscopt.html#tos
tos orphan 14 orphanwait 120
# Generic NMEA GPS Receiver
# mode is 9600 baud + only $GPZDA
# /dev/gps0 for NMEA
# https://www.eecis.udel.edu/~mills/ntp/html/drivers/driver20.html
# https://www.eecis.udel.edu/~mills/ntp/html/clockopt.html
server 127.127.20.0 mode 24 minpoll 4 prefer
fudge 127.127.20.0 flag1 0 # Disable PPS signal processing
fudge 127.127.20.0 flag4 1 # Obscures location in timecode
# Undisciplined Local Clock
# https://www.eecis.udel.edu/~mills/ntp/html/drivers/driver1.html
# https://www.eecis.udel.edu/~mills/ntp/html/clockopt.html
server 127.127.1.0
fudge 127.127.1.0 stratum 15
# Please consider joining the pool:
#
# http://www.pool.ntp.org/join.html
#
# For additional information see:
# - https://wiki.archlinux.org/index.php/Network_Time_Protocol_daemon
# - http://support.ntp.org/bin/view/Support/GettingStarted
# - the ntp.conf man page
# Associate to Arch's NTP pool
#server 0.arch.pool.ntp.org
#server 1.arch.pool.ntp.org
#server 2.arch.pool.ntp.org
#server 3.arch.pool.ntp.org# ntpq -p
remote refid st t when poll reach delay offset jitter
==============================================================================
GPS_NMEA(0) .GPS. 0 l - 16 0 0.000 0.000 0.000
LOCAL(0) .LOCL. 15 l 28 64 377 0.000 0.000 0.002
The DS3231 real-time clock has a temperature compensated oscillator, and goes for weeks without significant drift. Almost don't need a GPS, except now it's real easy to set the RTC from the GPS by typing, hwclock -w.
I did try, the problem is it doesn't detect the GPS like it does on yours, the best I can get is the stock ntpd install will work but only with the PPS output, it never shows the GPS being active like yours.
My router where I use GPS+PPS requires a Linux kernel change to AsusWRT (my brother Jon did it), and I'm using an RY835AI GPS receiver, inside a homemade weatherproof enclosure, mounted up on the roof of the building. However, you don't need to be within microseconds of standard time. Your u-blox7 USB GPS hanging in a side window is good enough to give millisecond accuracy without PPS. So I bought this little u-blox7 USB GPS that you had asked about, and I got it working with only the stock AsusWRT firmware.
So I can only expect PPS output on it?
U-blox7 USB GPS is no PPS. If PPS is something you need, I would build it myself from scratch. Maybe ask someone in your local area if you don't know how.
Even more confused now, when I did ntpq -p the GPS was nowhere in sight just PPSt (I named it PPStest but assume it got truncated)
A few posts back I show my ntp.conf. And my ntpq -p shows only GPS_NMEA(0) and LOCAL(0). I use Orphan Mode to fail over to Local Clock when the GPS loses it's satellite fix or if it's unplugged. Also uploaded a picture of me.
I get the feeling it is to do with the USB modem driver it loads under as I can't get the GPS to show even with your conf file.A few posts back I show my ntp.conf. And my ntpq -p shows only GPS_NMEA(0) and LOCAL(0). I use Orphan Mode to fail over to Local Clock when the GPS loses it's satellite fix or if it's unplugged. Also uploaded a picture of me.
https://www.snbforums.com/threads/ntp-daemon-for-asuswrt-merlin.28041/page-16#post-338179
Kvic hasn't been on for a couple of months, I sent him a message last week but no answer, someone who can code may want to take it on if we are lucky.
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