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IAR Embedded Workbench for Arm 10.10.x

Data Log Summary window

In this section:

What do you want to do?

YellowStripe.png

The Data Log Summary window is available from the C-SPY driver menu.

DataLogSummary_win_Qt_01.png

This window displays a summary of data accesses to specific memory location or areas.

Requirements

One of these alternatives:

  • The C-SPY simulator. (Not for all cores and devices.)

  • A device and a debug probe that either supports ITM and SWO, or supports delivering ETM and ITM trace concurrently.

Display area

Each row in this area displays the type and the number of accesses to each memory location or area in these columns. Summary information is listed at the bottom of the display area.

Data

The name of the data object you have selected to log accesses to. To specify what data object you want to log accesses to, use the Data Log breakpoint dialog box. See Data Log breakpoints.

Total Accesses

The total number of accesses.

If the sum of read accesses and write accesses is less than the total accesses, the target system for some reason did not provide valid access type information for all accesses.

Read Accesses

The total number of read accesses.

Write Accesses

The total number of write accesses.

Unknown Accesses

The number of unknown accesses, in other words, accesses where the access type is not known.

Approximative time count

The information displayed depends on the C-SPY driver you are using.

For some C-SPY drivers, this information is not displayed or the value is always zero. In this case, all logs have an exact time stamp.

For other C-SPY drivers, a non-zero value is displayed. The value represents the amount of logs with an approximative time stamp. This might happen if the bandwidth in the communication channel is too low compared to the amount of data packets generated by the CPU or if the CPU generated packets with an approximative time stamp.

Overflow count

The information displayed depends on the C-SPY driver you are using.

For some C-SPY drivers, this information is not displayed or the value is always zero.

For other C-SPY drivers, the number represents the amount of overflows in the communication channel which can cause logs to be lost. If this happens, it indicates that logs might be incomplete. To solve this, make sure not to use all C-SPY log features simultaneously or check used bandwidth for the communication channel.

Current time/Current cycles

The information displayed depends on the C-SPY driver you are using.

For some C-SPY drivers, the value is always zero or not visible at all.

For other C-SPY drivers, the number represents the current time or cycles—the number of cycles or the execution time since the start of execution.

Context menu

This context menu is available:

DataLogSummary_winPopup_Qt_01.png

These commands are available:

Enable

Enables the logging system. The system will log information also when the window is closed.

Clear

Deletes the log information. Note that this will also happen when you reset the debugger.

Save to File

Displays a standard file selection dialog box where you can select the destination file for the log information. The entries in the log file are separated by TAB and LF characters. An X in the Approx column indicates that the timestamp is an approximation.

Show Time

Displays the Time column. If the Time column is displayed by default in the C-SPY driver you are using, this menu command is not available.

Show Cycles

Displays the Cycles column. If the Cycles column is not supported in the C-SPY driver you are using, this menu command is not available.