Bluetooth 'eddystone' beacon for RPi
A python3 script to setup a bluetooth "Eddystone" beacon to broadcast your RPi's IP address as a URI of the form http://{host-ip-address}. Can then use a bluetooth beacon app on a smart-phone to find and browse to the RPi. If not running a web server on the RPi then it's ip address may still be of use.
*** Note this code must be run with root priviledges ***
To find the host machine's ip address this code parses the output of ip route and looks for
* dev {interface-name} * scope link * src {ip-addr} *
on a single line so as to build an {interface: ip-addr} dictionary eg {'eth0': '192.168.0.3', 'wlan0': '192.168.0.45'}. If no active interfaces are found BTBeacon uses the machine's hostname. If more than one active interface is found:
choose the alphabetical first eth* interface
but if no eth* interfaces are listed just choose the alphabetical first
Requires:
ip, hostname, hciconfig & hcitool cli utilities on root's path
root status
Based on:
https://hackaday.io/project/10314-raspberry-pi-3-as-an-eddystone-url-beacon
Usage:
sudo ./BTBeacon.py
or use sudo crontab -e to set as a root cron job @reboot and/or every hour.
To do:
Allow command line spec'n of the URI & protocol
Allow cmd line spec'n of the interface who's ip to use
Parse CMD3's error message
Parse apache config file for an IP binding