SN2X-PRIMER STMicroelectronics, SN2X-PRIMER Datasheet - Page 15

• Manufacturer Part Number: SN2X-PRIMER
• Manufacturer: STMicroelectronics

Specifications of SN2X-PRIMER

• Lead Free Status / RoHS Status: Supplier Unconfirmed

UM0450
No preconfigured link key
In this scenario, the Router does not have a preconfigured Link Key and executes a joining
procedure requesting a network key.
The Router initially joins in unauthenticated way and subsequently, during the
authentication, the network key is sent from the Trust Center (Coordinator) to the Router
unencrypted. The authentication phase represents a case where the security is at risk, but
may be acceptable depending the type of application.
Additionally, the Router can also request the Link Key from the Trust Center (Coordinator)
which will be sent encrypted with the network key.
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When the device is joined, the Coordinator board displays the Network ID (0x796E, for
example) and the EUI (0080E100000009BE, for example) as a result of an application-level
message sent by the Router. When the Router board is joined to a network, LED D1 is
active (green).
On the Coordinator board, scroll right to enter the first-level menu.
Scroll left or right to display Form Network and press the joystick to confirm.
Scroll left or right to display Change security Key and press the joystick. Scroll down
to select No preconf. Key and press the joystick to set the key and to allow its
distribution within the network.
Scroll left or right to display Permit Joining and press the joystick to confirm.
Scroll up or down to select the number of seconds (between 0 and 99) to allow joining
and press the joystick to confirm. If set to 0, joining is disabled. The Coordinator is now
ready to accept requests from other devices that wish to join the network. The
Coordinator displays the “Now Permit Joining with no preconf. Key” message.
On the Router board, connect jumper SW4 in 1-2 position or press switch SW3 to reset
the board. The Router starts to scan channels and will send a request to join available
networks. The Coordinator briefly displays the “Attempt to join with preconf. key”
message followed by the EUI address.
Getting started
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