116
2.8.5 Process After Communication Interruption
With Bluetooth communication, there is a chance that the communication link may be interrupted
due to radio wave conditions in air. An error occurred during the communication is detected by
carrying out
WriteFile API
function,
ReadFile API
function, etc.
In case where the communication is interrupted, carry out the normal Bluetooth interruption
process using the Bluetooth tool or in application and then retry to establish the same connection
for communication. If the normal Bluetooth interruption process is not made, unconformity in the
Bluetooth stack will occur so that the lower layer is disconnected whereas the upper layer is still
being connected causing the retry of establishing the connection is not possible.
2.8.6 Process During Suspend and Resume
When the terminal goes into suspend mode while Bluetooth is being used, the power to the
Bluetooth module integrated in the terminal will be automatically turned off. After that, when the
terminal resumes operation mode, the power to the Bluetooth module will be also turned on
automatically. Once the power is turned off, all the parameters related to Bluetooth
communication return to their initial states. These parameters must be set again in the Bluetooth
module by initializing the Bluetooth stack. If the Bluetooth tool or the Bluetooth Library is used, it
will automatically detect “suspend” and “resume” modes, and automatically initialize the
Bluetooth stack.
2.8.7 Setting SR Mode Parameter
When carrying out Bluetooth communication, the connection will be established by transmitting
radio waves by master Bluetooth equipment to slave Bluetooth equipment. Note that it may take
time sometime to make the establishment depending on a type of the partner Bluetooth equipment.
Here, by altering the SR mode parameter (used in Bluetooth connection), radio waves sent out
when the master Bluetooth equipment makes the establishment will change, and may reduce the
time required to establish the communication. The SR mode parameter can be set in the following
registry.
[HKEY_CURRENT_USER\SOFTWARE\RXBT\HCI]
Table 2.93
Key Setting
Value
Description
DEFAULT_PAGE_SCAN_REP_MODE dword: 0, 1, or 2
0: R0, 1: R1, 2: R2
Notes:
•
Change the SR mode parameter prior to establishing Bluetooth connection.
•
Even if the SR mode parameter is changed, the time required to establish connection with the
partner Bluetooth equipment may not be reduced.
Содержание IT-800 Series
Страница 15: ...15 2 1 4 Keys Keyboard Layout The following is the keyboard layout employed in the terminal Figure 2 1 ...
Страница 91: ...91 QR Code Enable 0 Min 1 Max 3500 Aztec Enable 0 Min 1 Max 3750 TLCode39 Enable 0 Code 32 Enable 0 ...
Страница 173: ...173 Copyrights Tab This tab is for displaying the OS copyright information Figure 3 19 ...
Страница 179: ...179 Root Tab Figure 3 27 Root certificates authenticate certificates received from other hosts ...
Страница 195: ...195 About Tab This tab displays current version information of the imager setting tool Figure 3 46 ...
Страница 201: ...201 Date Tab This tab is for setting display format of date Figure 3 56 ...
Страница 213: ...213 3 29 Windows Update This applet is used to keep the integrated operating system up to date Figure 3 74 ...
Страница 216: ...216 3 32 Domain Enrollment This applet is used to enroll the terminal to your company network Figure 3 78 ...
Страница 247: ...247 4 2 Games The terminal comes with two games Solitaire and Bubble Breaker Figure 4 2 ...
Страница 248: ...248 4 3 ActiveSync This application is an ActiveSync client program for the terminal to communicate with PC Figure 4 3 ...
Страница 255: ...255 4 5 Calculator The application can be used to operate nine digit calculator Figure 4 11 ...
Страница 261: ...261 2 On the child terminal the following screen appears while the child terminal is receiving data Figure 4 17 ...
Страница 264: ...264 4 11 Getting Started This application displays shortcut menus for setting up the terminal Figure 4 21 ...