Is it possible to make a connection to a certain Wi Fi network as a condition?

Fabian Nydegger 0

@CAP-33 said in Is it possible to make a connection to a certain Wi Fi network as a condition?:

What is <device>?

type ifconfig then you see all your devices.
what you look for is apcli0

iwinfo apcli0 info

CAP 33

@Fabian-Nydegger-0
Thank you. I wrote like this:

import subprocess
from time import sleep

ssid = subprocess.call(["uci","get","wireless.@wifi-iface[0].ApCliSsid"])

while True:
	if ssid == 'myssid':
		print("Connect")
		print(ssid)
	else:
		print("No nonnection")
		print(ssid)
	sleep(1)

But instead of myssid was output 1

Fabian Nydegger 0

my fault
you need subprocess.check_ouput()

import subprocess
from time import sleep

ssid = subprocess.check_output(["uci","get","wireless.@wifi-iface[0].ApCliSsid"])

while True:
	if ssid == 'myssid' + '\n':
		print("Connect")
		print(ssid)
	else:
		print("No nonnection")
		print(ssid)
	sleep(1)

CAP 33

@Fabian-Nydegger-0
Sorry, an error occurs.

uci: Entry not found
Traceback (most recent call last):
  File "/root/Wi-fi.py", line 5, in <module>
 ssid = subprocess.check_output(["uci","get","wireless.@wifi-iface[0].ApCliSsid"])
  File "/usr/lib/python3.6/subprocess.py", line 336, in check_output
    **kwargs).stdout
  File "/usr/lib/python3.6/subprocess.py", line 418, in run
    output=stdout, stderr=stderr)
subprocess.CalledProcessError: Command '['uci', 'get', 'wireless.@wifi-iface[0].ApCliSsid']' returned non-zero exit status 1.

Fabian Nydegger 0

@CAP-33 said in Is it possible to make a connection to a certain Wi Fi network as a condition?:

uci: Entry not found

That means uci dind't find the enrty in the config file
try

uci show wireless

look for the entry that shows your ssid, it'll have a .ApCliSsid at the end.
copy that path and use it.

CAP 33

@Fabian-Nydegger-0
I found the line:
wireless.@wifi-config[0].ssid='myssid'
But I did not find a single line that ends in .ApCliSsid

Lazar Demin

It looks like @Fabian-Nydegger-0 's code is meant for firmware b160 and older.
As of b174, the wifi configuration syntax has changed, that's likely why you're running into issues, @CAP-33

CAP 33

@Lazar-Demin
I'm using b183

Lazar Demin

@CAP-33 ya, so you're on the the new wifi config syntax as well as on the new wifi warp core.
The warp core works differently than the previous wifi, and actually does what you're looking for, if I've understood your posts correctly.

An Omega with warp core works more like how your laptop or smartphone work with wifi networks:

stores configuration data for networks you've previously configured
attempts to automatically connect to configured networks that are in range

All the details can be found here: https://onion.io/2bt-brand-new-os-release/

CAP 33

This post is deleted!

William Scott

@CAP-33 I know better than to not spell out acronyms or abbreviations on first use - my bad!

Firmware (f/w)
Software (s/w)
Hardware (h/w)

take care!
Bill

CAP 33

@Lazar-Demin
When I upgraded the firmware I encountered some problems. I had to reset the firmware to the factory settings and set everything up again. And finally, I updated my Omega to the latest version, as described in the link left by you, but still the code written above does not work for me.

Lazar Demin

@CAP-33
It looks like your script is meant for a system that must be explicitly told which network to connect to. You don't need to worry about that on the Omega.
As I mentioned above, in the new firmware (b176 and up) the wifi driver actually automatically does what you're trying to do with a script.

It stores configuration data for networks you've previously configured, and automatically connects to available networks. If there's multiple configured networks in range, it will connect to the network that is listed higher in the /etc/config/wireless configuration file. So the list of configured networks works like a preference list (kind of like how Mac OS does their Wifi networking).

If you want to manually trigger a network reconnect, just run the wifi command.

CAP 33

@Lazar-Demin
Perhaps you misunderstood what I'm trying to achieve. I'm trying to achieve that when Omega connects to a particular network, it performs the specified action.

Lazar Demin

@CAP-33 Lol yeah, you're right.
You can use iwinfo to grab the name of the network to which you're currently connected:

root@Omega-66FF:~# iwinfo apcli0 info
apcli0    ESSID: "MyNetworkName"
....

If you don't feel like doing multi-line text manipulation in Python, you can isolate the network name as well:

root@Omega-66FF:~# iwinfo apcli0 info | grep ESSID | awk '{print $3}' | sed -e 's/"//g'
MyNetworkName

CAP 33

@Lazar-Demin
Thank you. That's what I need.