jignesh 
Hi, I have mini2440 install qtopia. I want to use USB host as USB dual role. 1. When mini2440 connect to PC through USB to USB cable it work as peripheral means i want to transmit serial data to PC through USB host. 2. When Pendriver or any OTG connected to mini2440 it works as host that is now already working. How can i use USB host as a USB Dual role?