Is there a way over a USB/MSC connection to signal the USB/MSC device to switch to a different USB protocol such as CDC?
In this case, the USB/MSC device is actually a microprocessor which can already switch from USB/CDC to USB/MSC for a prescribed period of time. The trick/problem is to correctly guess at the required period of time. The preferred method would be to stop guessing and simply tell the USB/MSC device it is time to switch to USB/CDC.