## Overview

MicroEJ Architectures are distributed in two different versions:

• Evaluation Architectures, associated with a software license key
• Production Architectures, associated with an hardware license key stored on a USB dongle

Licenses list is available in MicroEJ preferences dialog page in Window > Preferences > MicroEJ

Note that :

• Evaluation licenses will be shown only if architectures requiring an evaluation license are detected in your MicroEJ repository.
• Production licenses will be shown only if architectures requiring a production license are detected in your MicroEJ repository.

## Installation

This section should be considered when using evaluation platforms, which use software license keys.

License keys can be added and removed from MicroEJ preferences main page. License keys are added to MicroEJ repository key-store using the Add… button. A dialog prompts for entering a license key. If an error message appears, the license key could not be installed. (see section License Keys Troubleshooting). A license key can be removed from key-store by selecting it and by clicking on Remove button.

### Generating Machine UID

To activate an evaluation platform, a machine UID needs to be provided to the key server. This information is available from the Window > Preferences > MicroEJ > Architectures or Window > Preferences > MicroEJ > Platforms preferences page. Click on Get UID button to get the generated machine identifier.

Generated Machine Identifier for Evaluation License

Consider this section when an error message appears while adding the license key. Before contacting MicroEJ support, please check the following conditions:

• Key is corrupted (wrong copy/paste, missing characters or extra characters)
• Key has not been generated for the installed environment
• Key has not been generated with the machine UID
• Machine UID has changed since submitting license request and no longer matches license key
• Key has not been generated for one of the installed platforms (no license manager able to load this license)

This section should be considered when using production platforms, which use hardware license keys.

### USB Dongles Update

Dongle This section contains instructions that will allow to flash your hardware dongle with the proper activation key.

You shall ensure that the following prerequisites are met :

• The USB dongle is plugged and recognized by your operating system (see USB Dongles Recognition section)
• No more than one dongle is plugged to the computer while running the update tool
• The update tool is not launched from a Network drive or from a USB key
• The activation key you downloaded is the one for the dongle UID on the sticker attached to the dongle (each activation key is tied to the unique hardware ID of the dongle).

You can then proceed to the dongle update by running the activation key executable. Just press Update (no key is required).

Dongle Update Tool

On success, an Update successfully message shall appear. On failure, an Error key or no proper rockey message may appear.

Successful dongle update

Once you have successfully updated your dongle, from MicroEJ, go to Window > Preferences > MicroEJ > Platforms. You shall see that the license status for the platforms you installed with the License tag matching the one on the sticker attached to your USB dongle has turned from a red cross to a green tick.

### USB Dongles Recognition

This section contains instructions that will allow to check that your hardware dongle is actually recognized by your operating system

#### GNU/Linux Troubleshooting

USB Linux For GNU/Linux Users (Ubuntu at least), by default, the dongle access has not been granted to the user, you have to modify udev rules. Please create a /etc/udev/rules.d/91-usbdongle.rules file with the following contents:

ACTION!="add", GOTO="usbdongle_end"
SUBSYSTEM=="usb", GOTO="usbdongle_start"
SUBSYSTEMS=="usb", GOTO="usbdongle_start"
GOTO="usbdongle_end"

LABEL="usbdongle_start"

ATTRS{idVendor}=="096e" , ATTRS{idProduct}=="0006" , MODE="0666"

LABEL="usbdongle_end"


Then, restart udev: /etc/init.d/udev restart

You can check that the device is recognized by running the lsusb command. The output of the command should contain a line similar to the one below for each dongle : Bus 002 Device 003: ID 096e:0006 Feitian Technologies, Inc.

#### Windows Troubleshooting

For Windows users, each dongle shall be recognized with the following hardware ID :

HID\VID_096E&PID_0006&REV_0109


On Windows 8.1, go to Device Manager > Human Interface Devices and check among the USB Input Device entries that the Details > Hardware Ids property match the ID mentioned before.