User:Magick777/Opportunistic Power Saving

/usr/bin/set2g

<script lang="text">

  1. !/bin/sh
  1. This script is intended to be run indirectly from dbus-scripts and to be triggered on
  2. phone lock. It will then attempt to determine whether it makes sense to change the radio
  3. mode to GSM in order to save battery life.
  1. Test the current radio mode and abort if we're in GSM mode already

TEST=`dbus-send --system --type=method_call --print-reply --dest=com.nokia.phone.net /com/nokia/phone/net Phone.Net.get_selected_radio_access_technology | g$ if [ ! -z "$TEST" ] then echo "Phone is already in 2G mode, aborting." exit 1 fi

  1. If we're on charge, we don't need to save battery so don't downgrade.

TEST=`grep 1 /tmp/oncharge` if [ ! -z "$TEST" ] then

  1. it's a non-zero value so we're on charge, abort gracefully

echo "Phone is on charge, no need to set 2G mode, aborting." exit 1 fi

  1. Test whether the phone is on a call, if it is don't mess with it

TEST=`dbus-send --system --type=method_call --print-reply --dest=com.nokia.csd.Call /com/nokia/csd/call/1 com.nokia.csd.Call.Instance.GetStatus | grep "uint$

  1. if phone is on call, grep filters out any call status but 0/idle, so we get a zero length output

if [ -z "$TEST" ] then echo "Phone is making or receiving a call, aborting." exit 1 fi

    1. Adding a 30 cooling off period means that if the device gets unlocked again within 30 seconds, we can
    2. kill this script whilst it's sleeping and leave 3G intact.

echo "Scheduling switch to 2G in 30 seconds..." sleep 30


  1. Make the actual change to 2G radio mode

run-standalone.sh dbus-send --system --type=method_call --dest=com.nokia.phone.net /com/nokia/phone/net Phone.Net.set_selected_radio_access_technology byte:1 echo "Phone set to 2G mode." exit 0

</script>

Retrieved from "http://wiki.maemo.org/User:Magick777/Opportunistic_Power_Saving"