windows causing grief with USB (64-bit only)

[bombasticbob]

windows (specifically 7) is causing grief with the USB. unable to use mega2560 driver with it. shows up as 2 separate devices in device manager. Might be a problem that's windows-specific that does NOT happen when I use FreeBSD or Linux

both FreeBSD and Linux recognize the device as an ACM-class serial port.

the 2nd device entry might be due to the ACM, which has the potential of having a voice audio device attached to a modem.

[bombasticbob]

verified that in windows 7 (32-bit) using the older 1.0.x driver for the mega2560 works. So in the later version of the IDE, the driver has changed somewhat (apparently) and is no longer compatible with what I'm doing. changing title to reflect '64-bit'.

[bombasticbob]

noted similar problems in 32-bit windows 10, but it seems the class driver just doesn't like what I'm doing in the device. debug mode might help determine what's happening (wireshark USB capture not helpful at this time)

[bombasticbob]

USB seems to have trouble with writing to the control channel. If the timing is right, it works. Usually it doesn't. investigating [may be at the core of this]. See #41