How to get access to usb device file on Android?

Question

I need to avoid using Android USB API and just get access to USB device file (like /dev/bus/usb/002/002 file) from my android app. Is there any opportunity to do it without rooting?

Now i'm getting permission error (from child process):

W/System.err( 9368): avrdude: ser_open(): can't open device "/dev/bus/usb/002/002": Permission denied
W/System.err( 9368): ioctl("TIOCMGET"): Invalid argument

Answer 1

No access to file directly. Use http://developer.android.com/reference/android/hardware/usb/UsbDeviceConnection.html#getFileDescriptor() instead