
WIRELESS CONNECTIVITY & SENSORS
User manual Proteus-II
⇐
Receiving multiple
02 8C 0C 00 02 00
00 DA 18 00 B5
48
61 6C 6C 6F
B1 02
8C 0C 00
02 00 00
DA 18 00
B1 48 61
6C 6C 6F B5
..
.
..
.
..
.
⇒
Deactivate scanning on module B,
02 0A 00 00 08
⇐
Response
02 4A 01 00 00 49
⇒
Reset module A (disable sending
beacons),
02 00 00 00 02
⇐
Response
02 40 01 00 00 43
⇐
Response
02 41 02 00 01 01 41
5.8. Energy-efficient distance estimation solutions
The Proteus-II advertising packet contains the TX power value of the transmitting device. This
value in combination with the RSSI value of the received advertising packet can be used to es-
timate the distance between the modules. Using a suitable triangulation algorithm and multiple
receivers or transmitters, a position can be approximated.
The advertising packets can be received by performing a passive scan that will not request the
scan response. Thus only one frame, instead of three frames, is transmitted per advertising
interval.
Besides the
of the sending module, the RSSI value and the TX power is output in
format of a
message via UART when an advertising packet of another Proteus-II
has been received.
To enable this function, the corresponding Bit in the
has to be set.
5.9. Configure the module for low power consumption
Depending on the application environment of the Proteus-II, the goal is to find the optimal
trade-off between the module’s performance and its power consumption. Therefore, the main
settings and operation modes that affect the current consumption are listed below:
•
: This command puts the module into
ACTION_SLEEP
mode, where it con-
sumes the lowest current (<1µA). In this case, both the UART and the Bluetooth
®
LE
interface are shut down.
•
: This command disables the UART interface. It is enabled again
as soon as the module is reset/woken or when the module outputs a message e.g. when
a connection request has been received or the
pin of the module was used.
•
: This setting can be used to configure the output power of the module. Re-
ducing the output power saves energy.
Order code 2608011x24010
47
Version 1.11 , July 2022