Keil Logo

Technical Support

On-Line Manuals

µVision User's Guide

About µVision User Interface Creating Applications Debugging Start Debugging Start Energy Measurement without Debug Application Program Execution Debug Windows and Dialogs Breakpoints Window Call Stack and Locals Window Code Coverage Command Window Component Viewer Disassembly Window Editor Window Event Recorder Setup Event Recorder Event Recorder Window Events Filtering Event Statistics Window Post-mortem Analysis Event Viewer Execution Profiler Instruction Trace Window System Analyzer Usage tips Save System Analyzer Contents Statistics Restrictions Logic Analyzer Setup Setup in Detail Restrictions Cortex-M Trace Configuration Memory Map Memory Window Performance Analyzer Registers Window Serial Window Debug (printf) Viewer Symbols Window System Viewer Adding System Viewer Windows System and Thread Viewer Thread States Toolbox Trace Data Window Trace Navigation Trace Exceptions Event Counters ULINKplus Window Watch Window Core Peripherals Cortex-M0 and Cortex-M0+ CM0/M0+: Nested Vector Interrupt Controller CM0/M0+: System Control and Configuration CM0/M0+: System Tick Timer Fault Reports (Cortex-M0+ only) Cortex-M3, Cortex-M4, and Cortex-M7 CM3/M4/M7: Nested Vector Interrupt Controller CM3/M4/M7: System Control and Configuration CM3/M4/M7: System Tick Timer CM3/M4/M7: Fault Reports CM3/M4/M7: Memory Protection Unit Cortex-M23/M33/M35P and Cortex-M55 Armv8-M: Nested Vector Interrupt Controller Armv8-M: System Control and Configuration Armv8-M: System Tick Timer Armv8-M: Fault Reports Armv8-M: Memory Protection Unit Armv8-M: Security Attribution Unit M-Profile Vector Extension (MVE) Debug Scripting Expressions Constants System Variables Peripheral Variables I/O Ports Serial Ports Program Variables (Symbols) Fully Qualified Symbols Non-Qualified Symbols Literal Symbols Using Symbols Line Numbers Bit Addresses Type Specifications Memory Attribution Specifiers Operators Differences between µVision and C Expression Examples Code and Data Trace (Cortex-M) Trace Features Configuring Trace Tracepoint Expressions Tracepoint Intrinsics Tracepoint Limitations Tracepoint Marks Tips and Tricks Review Peripherals and CPU Configuration Simulate I/O Ports Simulate Interrupts and Clock Inputs Simulate external I/O Devices Assign Serial I/O to a PC COM Port Check Illegal Memory Access Command Input from File Preset I/O Ports or Memory Contents Write Debug Output to a File Keyboard Shortcuts TPIU Initialization after RESET (Cortex-M) Prevent Opening Files Show Japanese Messages Debug Commands Debug Functions Simulation Flash Programming Dialogs Utilities Command Line Example Programs Appendix

Start Energy Measurement without Debug

In debug mode, a connection to the target is required, which implies that the CoreSight™ debug logic consumes additional energy. For pure energy measurement (without CoreSight energy consumption), use the Energy Measurement without Debug mode .

Energy Measurement Debug ButtonDebug — Energy Measurement without Debug starts the energy measurement without a debug connection. In this mode, you can safely remove the debug cable.

Click the Run button or press F5 to start the energy measurement

System Analyzer showing energy measurement data

Click the Stop button to stop the energy measurement.

Available debug functionality

In this mode, there is no target debug functionality available. This means that all debug related windows are either empty or show no data (for example Registers, Disassembly, Call Stack + Locals, Memory, Watch, Event Recorder, and Component Viewer).

The following windows are active and accessible:

  • The Command window accepts VTREG commands for ULINKplus. It is possible to change the states of I/O pins, retrieve the current and voltage values, and to enable or disable power measurement. This also works using a debug script.
  • The ULINKplus window shows the values of all ULINKplus VTREGs and will accept changes for the I/O configuration, pin levels, and power measurement enable/disable.
  • The System Analyzer window displays the current and voltage measured.


This option is only available if you have specified the ULINKplus debug adapter in the dialog Options for Target — Debug. Using any other debug adapter, will show the option greyed out:

Energy measurement not available

  Arm logo
Important information

This site uses cookies to store information on your computer. By continuing to use our site, you consent to our cookies.

Change Settings

Privacy Policy Update

Arm’s Privacy Policy has been updated. By continuing to use our site, you consent to Arm’s Privacy Policy. Please review our Privacy Policy to learn more about our collection, use and transfers
of your data.