Android USB OTG: programmatically turn off power to the port

Question

Suppose I have a USB-powered LED lamp connected through a USB OTG adapter to a Toshiba Excite 10 tablet running Android 4.0.3, which provides the power.

I want to progra

Answer 1

As I know from here https://askubuntu.com/questions/342061/power-on-off-usb-ports "All of the previous answers talk about a USB suspend mechanism, i.e. a "logical power-off", they will never physically cut the VBUS +5V from the USB port.".

Maybe a hardware solution is bad idea, but I can advise you to use MOSFET transistor with programmed Atmega8U4 chip on PCB, that is programmed to cutoff power to led lamp.