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IAR Embedded Workbench for Arm 9.70.x

Timeline window—Power graph

In this section:

What do you want to do?

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The power graph in the Timeline window is available from the C-SPY driver menu during a debug session.

TimelinePowerLogGraph_Mym80_03.png

The power graph displays a graphical view of power measurement samples generated by the debug probe or associated hardware in relation to a common time axis.

Note

There is a limit on the number of saved logs. When this limit is exceeded, the oldest entries in the buffer are erased.

Requirements

A debug probe with support for power debugging and one of these alternatives:

  • The C-SPY I-jet driver

  • The C-SPY J-Link/J-Trace driver

  • The C-SPY ST-LINK driver

  • The C-SPY TI MSP-FET driver

  • The C-SPY TI XDS driver

Display area

Where:

  • The label area at the left end of the graph displays the name of the measurement channel.

  • The Voltage and the Current graphs show power measurement samples generated by the debug probe or associated hardware. The Energy graph shows accumulated energy since the last time the CPU was stopped.

  • The graph can be displayed as a thin line between consecutive logs, as a rectangle for every log (optionally color-filled), or as columns.

  • The resolution of the graph can be changed. Note that if you change the setting to a very coarse resolution ("zooming out"), the same point in the graph can come to represent two or more values. In that case two values will be shown for that point on the X axis. The darker one is the lowest value for that point and the lighter one is the highest value for that point.

  • A red vertical line indicates overflow, which means that the communication channel failed to transmit all interrupt logs from the target system.

At the bottom of the window, there is a common time axis that uses seconds as the time unit.