SENA Parani-SD100-200 - Manual (Page 13)

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3. Configuration
3.1. Operation Modes
In addition to the serial port configurations, the Parani-SD also requires includes some settings for
Bluetooth. For getting the most out of Parani-SD, user should understand the following Bluetooth
connection schemes.
A Bluetooth device can play a role as a master or slave. Master tries to connect itself to other
Bluetooth devices, and slave is waiting to be connected from other Bluetooth devices. A Bluetooth
connection is always made by a pair of master and slave devices. A slave can be in two modes,
Inquiry Scan or Page Scan mode. Inquiry Scan mode is waiting for a packet of inquiry from other
Bluetooth device and Page Scan mode is waiting for a packet of connection from other Bluetooth
device. Every Bluetooth device has its unique address, called BD (Bluetooth Device) address, which is
composed of 12 hexa-decimal numbers.
Parani-SD has 4 operation modes as follows. Each mode can be identified with LED indicators as
illustrated in next section.
Table 3-1 The Parani-SD Operation Modes
Mode Description
Mode0 In this mode, there is no response when power on or software reset, and Parani-SD is just
waiting for AT command input. Neither master nor slave is assigned to Parani-SD in mode0.
User can change the configuration parameters of Parani-SD in this mode.
Parani-SD must be in Mode0, when it is directly controlled by AT commands.
The factory default is set to Mode0.
Mode1 Parani-SD tries to connect the last connected Bluetooth device.
Parani-SD in Mode1 is to be a master and tries to connect the last connected Bluetooth
device. Parani-SD always stores the BD address of the Bluetooth device to which Parani-SD
has connected last. When Parani-SD is initially used or after hardware reset, there is no BD
address stored in Parani-SD. In this case, Mode1 will not be able to work properly. The mode
change to Mode1 can be made after Parani-SD succeeds to connect to one other Bluetooth
device. Once changed to Mode1, Parani-SD will try to connect automatically the last
connected Bluetooth device whenever the unit is powered on or software reset.
Parani-SD in Mode1 cannot be discovered or connected by other Bluetooth devices.
Mode2 Parani-SD is waits for a connection from the last connected Bluetooth device.
Parani-SD in Mode2 is to be a slave and waiting for the connection only from the last
connected Bluetooth device. Just like Mode1, if there is no BD address stored in Parani-SD,
the mode change from other operation modes to Mode2 is not work properly. Once changed to
Mode2, Parani-SD will wait for the connection from the last connected Bluetooth device
whenever the unit is powered on or software reset.
Parani-SD in Mode2 cannot be discovered or connected to Bluetooth devices other than the
last connected device.
Mode3 Parani-SD is waiting for the connection from any other Bluetooth devices. In Mode 3 the
Parani-SD is discoverable and can be connected to by other Bluetooth devices.
3.2. LED Indicators
RS232-Tx and RS232-Rx LED will flash accordingly when data is transmitted. For small data
transmissions, it may be hard to recognize the quick flashing action of the LED.