Wurth Elektronik AMB2621, Руководство пользователя, Страница: 112 / 192

WIRELESS CONNECTIVITY & SENSORS
User manual Proteus-II
• The minimum and maximum connection interval parameters specify the borders of the
connection interval as determined in the negotiation procedure between the central and
the peripheral during connection setup. The connection interval defines the frequency of
communication during connection setup and data transmission. If a Proteus-II module A
(central) connects to a Proteus-II module B (peripheral), the connection interval settings
of the central are used for connection setup. If both modules have different connection
interval settings the peripheral requests the central to accept the peripheral’s settings af-
ter 5s. The central accepts these settings, and thus the peripheral’s connection interval
is used.
If now another Bluetooth
®
LE device (e.g. a smart phone) connects as central to a
Proteus-II module (peripheral) and the connection interval settings do not coincide, the
Proteus-II requests the smart phone to accept its settings after 5s. If the cell phone
does not accept the settings, it will be requested a further 3 times with a delay of 10s.
If the peripheral’s settings request have been rejected in all cases the connection will be
shut down. If the smart phone itself requests to update the connection interval of the
Proteus-II, the module accepts the request. Reversely, if a Proteus-II (central) connects
to another Bluetooth
®
LE device (peripheral) and the connection interval settings do not
coincide, the Proteus-II accepts all requests of the peripheral to update the connection
parameter settings.
• The connection supervision timeout defines the time after which an already established
connection is considered as lost, when no further communication has occurred.
Please ensure that all members (Proteus-II, cell phones and other
Bluetooth
®
LE devices) of a network use the same connection timing parame-
ters to avoid connection problems and changes of the connection interval dur-
ing an opened connection.
Please check the minimum connection interval that is supported by iOS. Former
iOS devices do not support connection intervals shorter than 30ms!
8.16.1. Example 1
Set the connection timing parameter to 0x00 using
CMD_SET_REQ
with settings index 8.
Start signal Command Length Settings index Parameter CS
0x02 0x11 0x02 0x00 0x08 0x00 0x19
Response
CMD_SET_CNF
: Successfully modified the setting.
Order code 2608011x24010
110
Version 1.11 , July 2022 www.we-online.com/wcs