[ help ] [ MC7430 ] USB ioctl open error: Permission denied

IoT Modules MC/EM Series
4

So just to be clear on the procedure.

  1. Unit plugged in working with the SDK no isses.
  2. Unplug the unit, /dev/ttyUSB and /dev/qcqmi interfaces disappear from the system.
  3. When the interfaces disappear you see what on your system? There are API’s designed to notify you of the loss of a device.
  4. Plug the unit back in, /dev/ttyUSB and /dev/qcqmi interfaces re enumerate back to the device numbers they previously had.
  5. At this point what are you seeing expecting the SDK to do?

Regards

Matt