Package details
Several new USB devices (especially high-speed wireless WAN
stuff, they're expensive anyway) have their MS Windows drivers
onboard; when plugged in for the first time they act like a flash storage
and start installing the driver from there. After that (and on every
consecutive plugging) this driver switches the mode internally, the
storage device vanishes (in most cases), and a new device (like an
USB modem) shows up. The WWAN gear maker Option calls that
feature "ZeroCD (TM)".
Fortunately there are things like human reason, USB sniffing
programs and "libusb". It is possible to eavesdrop the communication
of the MS Windows driver, to isolate the command or action that
does the switching, and to reproduce the same thing with Linux.
USB_ModeSwitch makes the last step considerably easier by taking
the important parameters from a configuration file and doing all the
initialization and communication stuff. It does NOT check for success
afterwards as of now. The right approach would be to consult /proc/bus/usb/devices
(or the output of "lsusb") before and after execution to note any changes.
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