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2.12.1 Basic specifications
(1) Basic communication procedures
This section explains the basic procedures for using Bluetooth for communication.
ⅰ Bluetooth initialization
When the Bluetooth tool is started or an initialization function is executed in the library, it will turn on
the power to the Bluetooth module and initialize the Bluetooth protocol stack. The time required for
initialization varies between models.
ⅱ Search for devices
When the Bluetooth tool is operated or a device search function is executed in the library, a device
search signal is sent out, and device information is acquired for nearby usable Bluetooth devices.
ⅲ Acquiring service information
After the Bluetooth device to communicate with is selected, and the Bluetooth tool is operated or a
service acquisition function is executed in the library, information on the currently usable services
(profile) of the destination Bluetooth equipment is acquired through communication.
ⅳ Security authentication with PassKey exchange
The partner Bluetooth device may request a PassKey at a time of acquiring service information and
establishing Bluetooth connection. In case the Bluetooth tool is used, an input screen is displayed
when the PassKey is requested, so input the same PassKey for both Bluetooth devices. If the library
is used, the PassKey must be set in advance by running the PassKey setup function before the
partner requests the PassKey.
ⅴ Bluetooth connection
After the Bluetooth device to communicate with is selected, use the Bluetooth tool or execute a
connection function in the library, to make the Bluetooth connection. After the connection has been
established, communication via Bluetooth can be continued using the selected profile until the
Bluetooth connection is terminated.
ⅵ Terminating the Bluetooth connection
Use the Bluetooth tool or execute a connection function in the library, to terminate the Bluetooth
connection.
ⅶ Closing Bluetooth
Close the Bluetooth tool or execute a closure function in the library to execute the Bluetooth protocol
stack termination process, and turn off power to the Bluetooth module.
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