BLE-USB, USB to Bluetooth Low Energy Converter (Ver. 1.0, Oct/6/2016) 8
Slave receive connection request from Master. If the illegal Master was connected to the
Slave, and then the Slave will be disconnect from Master. The master identification
mechanism can disable by AT command.
The schematic diagram of broadcast mode was shown in
. It had two Masters
and six Slaves. The Master A will connect to the Slave 1~3, and the Master B will connect
to the Slave 4~6. The Slave 1 is in the commutation range of Master B, but the Master will
not send the connection request to the Slave 1 because the Group ID is different.
Figure 1-3. The schematic diagram of BLE-USB
1.4
Operation Mode
The module will in the initialization mode after power on. If the initialization was success, and
the module will went to the transmission mode. The module can send data or it can receive the
data in the transmission mode. User sends the “+++<CR>” to the module. It will go to the AT
command mode. The module will be in the AT command mode until 50 second without any
commands or send the “ATE<CR>”. The AT command mode can refer to
Figure 1-4. The block diagram of operation mode
1.5
Bluetooth LE Role
The Bluetooth Low Energy (LE) had four roles. The roles are Master (Central), Slave
(Peripheral), Broadcaster and Observer. The Master and slave had used in the connection mode.
5
3
Group ID = 1
Group ID = 2
6
2
1
4
Master
Slave
B
A
initialization
mode
transmission
mode
AT command
mode
“+++<CR>”
“ATE<CR>”
After 50 sec
