User's Manual

13
3. Configuration
3.1. Operation Modes
In addition to the serial port configurations, the IW05 requires also includes some settings for
Bluetooth. For getting the most out of IW05, 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.
IW05 has 4 operation modes as follows:
Table 3-1 The IW05 Operation Modes
Mode
Description
Mode0
In this mode, there is no response when power on or software reset, and IW05 is just waiting
for AT command input. Neither master nor slave is assigned to IW05 in mode0. User can
change the configuration parameters of IW05 in this mode.
IW05 must be in Mode0, when it is directly controlled by AT commands.
The factory default is set to Mode0.
Mode1
IW05 tries to connect the last connected Bluetooth device.
IW05 in Mode1 is to be a master and tries to connect the last connected Bluetooth device.
IW05 always stores the BD address of the Bluetooth device to which IW05 has connected last.
When IW05 is initially used or after hardware reset, there is no BD address stored in IW05. In
this case, Mode1 will not be able to work properly. The mode change to Mode1 can be made
after IW05 succeeds to connect to one other Bluetooth device. Once changed to Mode1, IW05
will try to connect automatically the last connected Bluetooth device whenever the unit is
powered on or software reset.
IW05 in Mode1 cannot be discovered or connected by other Bluetooth devices.
Mode2
IW05 is waits for a connection from the last connected Bluetooth device.
IW05 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 IW05, the mode change
from other operation modes to Mode2 is not work properly. Once changed to Mode2, IW05 will
wait for the connection from the last connected Bluetooth device whenever the unit is powered
on or software reset.
IW05 in Mode2 cannot be discovered or connected to Bluetooth devices other than the last
connected device.
Mode3
IW05 is waiting for the connection from any other Bluetooth devices. In Mode 3 the IW05 is
discoverable and can be connected to by other Bluetooth devices.