The interface MCU features a
Mass Storage Device (MSD). This makes the Development Kit (DK) appear as an external drive on
your computer.
This drive can be used for drag-and-drop programming. By copying a HEX file to the drive, the
interface MCU programs the file to the device. However, files cannot be stored on this drive.
Note:
- If Windows tries to defragment the MSD part of the interface MCU, the interface MCU
disconnects and becomes unresponsive.
- Your antivirus software might try to scan the MSD part of the interface MCU. Some antivirus
programs trigger a false positive alert in one of the files and quarantine the unit. If this
happens, the interface MCU becomes unresponsive.
- If the computer is set up to boot from USB, it can try to boot from the DK if the DK is
connected during boot. This can be avoided by unplugging the DK before a computer restart or
changing the boot sequence of the computer.
You can also disable the MSD of the DK by using the msddisable command in
J-Link Commander. To enable, use the msdenable command. These commands take
effect after a power cycle of the DK and stay this way until changed again.