managed wifi with a sketch

Official Hardware Classic Yún
1

Hi everyone, i'm new on arduino (and unfortunately not native english speaker :s )

I'm doing a project on witch i have an arduino yun used as a weather station powered by a solar panel.

To save the energy i wanted to turn the wifi off.

The algorithm i wanted to use on the loop function is :

data<-getData(captors);

turnWifiOn()

connect<-connectToWifi(SSID)

if connect(Fail)

    insertInLocalBDD(data)

else

    getDataFromLocalBDD()

    insertAllDataInDistanteBDD()//i use the httpClient library to send the data by a webservice

    deleteDataFromLocalBDD()

turnWifiOff()

delay(600000)//wait 15 min

I tried to used the bridge functions

Process.runShellCommand("ifdown -a");

but it doesn't work, i know runShellCommand works because i use it to get the date but ifdown/ifup don't.

Anyone know how could i do to switch the wifi off and on?

thank you for answers!

2

Have a look at this thread, I know it's about permanently disabling Wifi but the build in auto reboot (have never heard this before, just read it in the linked posting) should be a problem for your goal also:
http://forum.arduino.cc/index.php?topic=189105.0

3 
nano /mnt/sda1/disablewifi.sh

#!/bin/sh
/sbin/uci set wireless.radio0.disabled=1
/sbin/uci commit wireless; /sbin/wifi
#/etc/init.d/network  restart

chmod 755 /mnt/sda1/disablewifi.sh

nano /mnt/sda1/enablewifi.sh

#!/bin/sh
/sbin/uci set wireless.radio0.disabled=0
/sbin/uci commit wireless; /sbin/wifi
#/etc/init.d/network  restart

chmod 755 /mnt/sda1/enablewifi.sh

Testing:

ifconfig wlan0

/mnt/sda1/disablewifi.sh

ifconfig wlan0

/mnt/sda1/enablewifi.sh

ifconfig wlan0
4

Arduino code:

#include <Process.h>
void setup() {
 Bridge.begin();  // Initialize Bridge
}
void loop() {
 Process p;              
 p.begin("/mnt/sda1/disablewifi.sh");      
 p.run();
 delay(5000); 
}
5

thank you for the fast answer! you are all awesome! i'm going to test your solution sonnyyu and let you know the result!

6

Sorry for this late answer but my arduino yun was toasted and the sdcard reader dead so i had to order a new one, with the new one everything is working properly thank you guys!