Bluegiga IWIP3G - IWRAP - IPHONE 3G, Руководство пользователя

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Initial mode Target mode Requirements for
state transition
Command Mode
(no Bluetooth connections)
In this mode, ASCII commands
can be given to iWRAP.
Data Mode A connection is successfully
created by using the
CALL
command and CONNECT event
that indicates a successful
connection is received.
A remote device opens a
Bluetooth connection to iWRAP.
A RING event that indicates a
received connection is received.
Data Mode
In this mode, all data is sent
transparently from UART
interface to Bluetooth
connection.
Command Mode The user switches mode by
sending an escape sequence to
iWRAP firmware or by toggling
the DTR pin.
A link is terminated (closed by
the remote device or by link
loss) and
NO CARRIER event is
received.
Command Mode
(active connection)
In this mode, ASCII commands
can be given to iWRAP.
Data Mode User switches the mode either by
sending the escape sequence or
command SELECT command.
Table 1: iWRAP modes transitions explained
The escape sequence:
The escape sequence causes the iWRAP firmware to go to the command mode from the
data mode or vice versa. The escape sequence consists of three (3) escape characters that
are defined by
SET CONTROL ESCAPE command. By default the escape character is ‘+’.
Do not enter any character before and/or after the escape sequence for a guard time
which is 1 second. Also send the escape characters individually, not as a string.
With default settings the escape sequence is:
< 1 second sleep> +++ < 1 second sleep>
When a successful state transition from data mode to command mode is made, iWRAP
sends a “ READY. ” event to indicate that it’s ready to receive commands.
The same escape sequence or the SELECT command can be used to return to data mode.