Thursday, July 24, 2014

wifi monitor to troubleshoot Yun wifi

My Yun's wifi seems to be very unstable.

I created a python script to monitor the Yun's wifi connection.

This script can be downloaded here.

The main script is wifiMonitor.py

There are 4 things that are supposed to be configured (see wifiMonitor.py):

LOGFILE="/tmp/wifiMonitor"
LOGFILESD="/mnt/sda1/arduino/wifiMonitor_"
RESTART_WIFI_WHEN_LOST = True
TO_PING = "192.168.1.1"

The first 2 give the location of where the logs are stored: LOGFILE is the main destination, with now and then a backup to LOGFILESD.
When it sees the wifi coonection is lost, it will either:
- do nothing (just wait and hope it gets restored)
- restart the Yun's wifi
This is configured by the RESTART_WIFI_WHEN_LOST option.
To determine if the Wifi is ok, it will ping a particular site or IP address. This is set by the TO_PING option. In my case I just ping my router.

In short the script will now and then ping to TO_PING site to determine if Wifi is ok and do the appropriate action if not. It logs the ratio of ok/not_ok and the current uptime.



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4 comments:

  1. UnknownMarch 14, 2016 at 3:04 PM

    hi
    please can you guide in detail on how to install this on arduino yun
    regards

    ReplyDelete
  2. UnknownMarch 14, 2016 at 5:37 PM

    That depends on where you can start. The first thing to do is to download the script and put it on your arduino Yun somewhere. I assume you know how to do this? If not, maybe this can help: http://myyafa.blogspot.de/2013/11/mounting-yun-sd-card-on-my-linux.html

    Next you need to make sure the script starts when your Yun starts: http://myyafa.blogspot.de/2013/12/starting-script-after-cpu-linino-boot.html

    ReplyDelete
  3. UnknownApril 11, 2016 at 9:13 PM

    Hi Nico, I wonder according to your script what is the fastest recovery time for the wifi to be back up and running again?

    Thanks bro :)

    ReplyDelete
    Replies
    1. UnknownApril 11, 2016 at 9:15 PM

      I'm planning to make my yun to send data to local database every three seconds, and i wonder how many seconds we need to restart the yun wifi once it get disconnected.

      Delete

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