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To implement automatic reconnection when WiFi is disconnected, the principle is to use Python to monitor whether the network is disconnected, and restart the network service if it is disconnected. Next, I will share the implementation code with you. Friends who need it can refer to it
1.Python code autowifi.py, placed in the /home/pi directory:
#!/usr/bin/python import os, time while True: if '192' not in os.popen('ifconfig | grep 192').read(): print '\n****** wifi is down, restart... ******\n' os.system('sudo /etc/init.d/networking restart') time.sleep(5*60) #5 minutes
2.Shell script autowifi.sh , also placed in the /home/pi directory:
#!/bin/sh python /home/pi/autowifi.py &
3. Automatically start the above script when booting: execute the following command in the terminal window
sudo cp -f /home/pi/autowifi.sh /etc/init.d/ sudo chmod +x /etc/init.d/autowifi.sh sudo chown root:root /etc/init.d/autowifi.sh sudo update-rc.d autowifi.sh default
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