User Manual
HLK-B40
Terminology&noun interpretation
Name.
Instructions
Transmission
Transparent transmission is to forward data as is between Bluetooth and serial port
Bluetooth
A short-range wireless communication technology
BLE
Bluetooth Low Energy, a new Bluetooth technology specification that consumes
less power and has a higher transmission and communication distance
GATT
Bluetooth Low Energy (BLE) connections are based on the GATT (Generic
Attribute Profile) protocol and are a common specification for sending and
receiving data over Bluetooth connections
Bluetooth host
One of The roles of the device in the Bluetooth connection, the host to scan the device
slave and actively initiate the connection to the device, etc.
in the Bluetooth connection its leading role
Bluetooth from
the machine
One of the roles of the device in a Bluetooth connection, slave to broadcast its own
information, passively waiting for the connection
Bluetooth
broadcast
Bluetooth from the machine device through periodic broadcasting, so that the
surrounding host equipment can scan and identify themselves, the host device
according to the scanned slave information can initiate a connection to the
computer
Broadcast interval
Bluetooth sends broadcasts slave at intervals that are smaller and faster to scan but
the greater the power consumption, the smaller the power consumption
Connection
interval
When two Bluetooth devices are connected, the smaller the beat of the data, the
smaller the transmission speed, the smaller the delay but the greater the power
consumption
Pair the binding
A mechanism of communication security in Bluetooth technology, which realizes
the security of Bluetooth link layer
OTA
Air upgrade, i.e., the firmware of the module is wirelessly upgraded via Bluetooth
Re-connect
Intervals
When the module is the host, when the Bluetooth connection is not connected or
disconnected, the interval is automatically reconnected
Table 1 The term name interpretation table
