User's Manual

Table Of Contents

CATC MERLIN MOBILE 1.00 CHAPTER 7

User’s Manual Decoding Trace Data

DRAFT

The Trace will update to reflect the new assignments.

Note: Manual channel assignments can be removed all at once using the Remove

All User assignments command on the Assigned to menu, which is described

below.

Assigned to Menu

The Assigned to menu both shows the current channel assignment and is used to change

assignments for decoding L2CAP messages.

Access this menu by left-clicking on an A (Assignment) field in an L2CAP row in the Trace.

Note: This menu can be accessed only if there are decoded L2CAP messages in the Trace. Additionally,

L2CAP messages with CIDs from 0x000-0x003F do not contain the A field.

The top line of the menu shows the current assignment.

• To change the assignment, select a different protocol from the menu.

• Select Remove All User assignments to return all user-defined protocol assignments to

their default settings.

7.3.2 L2CAP Channel Connection Assignments

This dialog lists the current L2CAP master/slave channel connection assignments for the

active Trace file, and is also used to manually configure L2CAP channel connection

assignments for decoding L2CAP messages.

Manual assignments are saved with the Trace, so they will be used the next time the Trace

is opened and L2CAP messages are decoded.

The columns of data in the Master and Slave lists contain this information:

• From message #: The L2CAP message # for each master or slave transmission in the

Trace that first uses the particular CID.

• CID = #: The channel identifier (CID).

• Protocol: The currently assigned Protocol/Service Multiplexor (PSM) for the device.

• cntd: Indicates that the device is configured as connected for decoding.

To access the dialog and configure channel assignments:

Step 1 Decode L2CAP messages in a Trace by selecting View > Levels > L2CAP

Message Level from the menu bar, or by pressing the L2CAP button on the

toolbar.

L2CAP messages will be decoded by Merlin Mobile.

Step 2 Open the Connections dialog by selecting View > L2CAP connections from

the menu bar, or by right-clicking anywhere in the Trace and selecting

L2CAP connections from the Trace View pop-up menu.

The dialog will open.