hdoverobinson

hdoverobinson / ubxconfig.sh

Last active February 11, 2025 20:34

Configure u-blox GPS/GNSS modules with Bash

	#!/bin/bash

	###AUTHOR###
	#Harry Dove-Robinson 5/8/2017
	#[email protected]
	#https://gist.github.com/hdoverobinson
	#https://github.com/hdoverobinson

	###USAGE###
	#This is a script used to configure u-blox GPS/GNSS modules from a text file generated by u-center.

hdoverobinson / iptables-docker.rules

Created May 9, 2017 02:16

Complete ruleset that allows Docker networking behind an iptables firewall with a default drop policy

hdoverobinson / socat-ntp-acts.txt

Created May 9, 2017 02:14

Socat server and client for use with NTP's type 18 ACTS driver.

	#This is currently used by an NTP server to access a V.92 modem over the LAN to dial the NIST ACTS.
	#The options here work using a USR5686G modem over a PL2303 USB to RS232 adapter with NTP 4.2.8p8.
	#NTP expects a device called "acts1" at 19200 baud. You should adjust the port number, character device file, baudrate, and lockfile to suit your environment.
	#NTP will not autobaud after a successful connection using this method. The modem init string in ntpd/refclock_acts.c must be edited to lock the modem to 19200 baud.
	#A ping test was added to the client to limit the number of retries it makes during a network outage.
	#These are placed in startup scripts run by a cronjob.

	#socat-server
	/usr/bin/screen -dmS socat-server-acts1 /bin/bash -c "while true; do /usr/bin/socat -v -d -d -d -t10 tcp-l:54321,reuseaddr,keepalive file:/dev/ttyUSB0,b19200,nonblock,raw,echo=0,cread,cs8,crtscts,min=1,time=0,nl0,cr0,tab0,bs0,vt0,ff0,waitlock=/var/run/ttyUSB0.lock; done"