====== WiFi fail safe solution ======

===== About =====

This article describes how to have ability to select AP or STA with jumper.

===== Hardware =====

Put jumper between GND and GPIO7 to activate AP mode. Remove to leave in STA mode.

===== Configuring =====

  * Create script ''/usr/bin/wifi_mode.sh'' and fill with content

  #!/bin/sh
  
  EXPORT='echo 7 > /sys/class/gpio/export'
  DIRECTION='echo in > /sys/devices/virtual/gpio/gpio7/direction'
  
  BODY=`cat /sys/devices/virtual/gpio/gpio7/value`;
  
  if [ "$BODY" == 1 ];
  then
          echo "AP mode"
          cp /etc/config/wireless_ap /etc/config/wireless
  else
          echo "STA mode"
          cp /etc/config/wireless_sta /etc/config/wireless
  fi


  * Create two versions of wireless configuration file. ''/etc/config/wireless_ap'' and ''/etc/config/wireless_sta''. Add "option auto 0" to interface configuration.

===== Run on boot =====

  * Edit ''/etc/rc.local'' file to be like this:

  /usr/bin/wifi_mode.sh
  wifi
  exit 0