cc3200 power saving mode

Hi All,

I just started using cc3200 launch pad. I could get a external LED blink from webserver running on cc3200. I used SimpleWebServerWifi example to achieve it. 

Now I wanted to power the launch pad using 2 AA batteries. I could power it as per instructions, but it is not lasting more than 1 hour. 

Can someone tell me how to enable power saving mode? I want to wakeup only GPIO pins after webserver receives any request. Please help me.

Thanks

Venu