On Mon, 7 Jul 2014, Steve Calfee wrote: > You are right, the device will get 5 volts. However it is still part > of the spec that 2ms without a SOF will force the device into suspend > mode, so it will use less than 2ma. So depending on your definition of > function, there will be power, but no activity. If it uses more than > 2ma, from the bus, problems will ensue.
What you're saying is true, so long as the spliced USB cable isn't plugged into a host. But of course, you wouldn't expect to get any activity on a device when it isn't plugged into a host -- even if you use a normal cable. If the spliced USB cable _is_ plugged into a host then the host will see it, issue a reset, and start sending SOF packets. In that situation your comment doesn't apply. Alan Stern -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
