WIRELESS CONNECTIVITY & SENSORS
User manual Proteus-II
If one module is no longer within range, the
message is triggered by a
timeout.
For an example on setting up an unsecured connection, see chapter
. See also the Proteus-
II application note ANR002 to get detailed information about the connection setup with foreign
devices.
For an example on setting up an unsecured connection, see chapter
. See also the ap-
plication note ANR005 [3] to get detailed information about the connection setup with foreign
devices.
5.6.1. Further information for a secure connection setup
The
parameter of the module determines the security mode. If a certain security
mode of a Proteus-II peripheral device is set, its security level has to be met by the connecting
central device to be able to exchange data. As soon as the defined security level is not met by
the central device, no access to the peripheral’s profiles will be granted.
When connecting from a Proteus-II to a Proteus-II, you shall not use different
security modes.
To get further information about the secured connection setup, when using a
foreign device (i.e. mobile phone with a custom APP), please refer to the Appli-
cation Note "advanced user guide" (Proteus-I: ANR002, Proteus-II: ANR005).
5.6.1.1. Just works mode
In case of the "Just works" mode, each time a connection is established, a new random key
is exchanged in advance to be used for data encryption. Since no authentication will be per-
formed, also devices without input and output capabilities (like keyboard or display) are able to
connect to each other.
Example: Secured connection with LE Legacy security method "Just Works" without
bonding
1. Power-up the modules and make their UARTs accessible by the host(s) (115200 Baud,
8n1). After the power-up or after reset the following sequence is sent from the module
Info
Module A
Module B
⇐
Response
Module A started in
ACTION_IDLE
mode.
02 41 02 00 01 01 41
⇐
Response
Module B started in
ACTION_IDLE
mode.
02 41 02 00 01 01 41
Order code 2608011x24010
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Version 1.11 , July 2022