Using The 2 Mbit And Le Coded Phy; Connection Setup Using Le Coded Phy - We PROTEUS-III User Manual

WIRELESS CONNECTIVITY & SENSORS
User manual Proteus-III
During the time the reception and transmission tests were running 5374 data packets have
been received by module B, which were transmitted by module A.

5.11. Using the 2 MBit and LE Coded phy

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Bluetooth 5 allows to transmit data with 2 MBit data rate as well as in LE Coded mode. The LE
Coded mode is the so called "Long range mode" that has been invented with Bluetooth
. It uses the Direct Sequence Spread Spectrum (DSSS) technique that spreads the signal
and thus generates redundant informations. On the receiver side, it uses the Forward Error
Correction (FEC) technique to use the redundancy to correct a received perturbed signal. The
combination of both, the DSSS and FEC, enable higher ranges in data transmission.
To be backward compatible to Bluetooth
be setup using the 1 MBit phy. As soon as a connection has been setup, the connection can
be updated to the 2 MBit or LE Coded mode. To switch the phy after the connection has been
setup the Proteus-III offers the command CMD_PHYUPDATE_REQ . As response to this request a
CMD_PHYUPDATE_IND is returned from the Proteus-III, that gives feedback if the connection was
switched to the new phy, or if the connection partner rejected the request.
Please note that the 2 MBit and LE Coded phy is an optional feature of
Bluetooth

5.12. Connection setup using LE Coded phy

Due to backward compatibility reasons the Bluetooth
connection in the 1 MBit legacy mode and then to update the connection to long range mode,
if requested. Thus, at connection setup time the distance between the two Bluetooth
vices must be within the standard range.
To avoid this situation, the Proteus-III allows to setup a connection directly in long range mode.
To enable this feature, set the corresponding bit in the user setting CFG_Flags .
As soon as this feature is enabled, the Proteus-III sends only advertising packets in long range
mode. Furthermore, when scanning, only advertising packets in long range mode are received.
Thus only devices using this special mode can be found on the radio.
The Proteus-III advertises and scans in long range mode and thus is radio
incompatible to Bluetooth
feature, all Bluetooth
Proteus-III on radio as they are scanning in legacy 1 Mbit mode, by default.
Example: Configure the device for long range connection setup
The goal of this example is to demonstrate how to configure two Proteus-III radio module
to be able to setup connections in long range mode. Further, a connection setup and data
transmission is shown.
Order code 2611011024000
Version 1.8 , July 2022
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LE 4.x devices, Bluetooth
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5 devices and therefore must not be supported.
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LE devices acting in legacy 1 Mbit mode. Using this
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LE enabled devices, like smart phones, do not find the
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LE connections must still
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LE standard expects to setup a Bluetooth
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5.0
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LE de-
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