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Sorry but I don't understand why do you want use port 2 instead of 1?
Port1 is the host, isn't it??
About the OTG I know, but I'll not stake one's life on it, that is a kind of standar that is used to have a "computerless" communication between usb devices..
Did you try to built some circuit and connect to port 1, and see what's happen..?
Ciao
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