• State Resolved
  • Locked Locked
  • Replies 4 replies
  • Subscribers 80 subscribers
  • Views 1343 views
  • Users 0 members are here
Support feedback
Options
Options
Related

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

MSP432 EnergyTrace+ in Low Power Modes

Michael J Schultis
Mastermind 24995 points
Other Parts Discussed in Thread: ENERGYTRACE

Hello Team,

Is energytrace+ support continued even in some of the very low power modes, or can it only be used in certain sleep/awake states?

If there are only certain states under which it is supported, is there some documentation that you can point me toward to see what states these are?

Best,
Michael

  • 0
    TI__Expert 6760 points

    Hello,

    These documents, SLAU575.pdf (www.ti.com/lit/pdf/slau575) and SLAA602.pdf (www.ti.com/lit/pdf/slaa603), infer that Energy Trace should be available for the currently running low power mode as configured in your application.

    Regards,

    Arthi Bhat 

     

  • 0 in reply to Arthi Bhat1
    TI__Mastermind 24995 points

    Hello Arthi,

    Thank you for the response.
    Just to be clear, it seems that EnergyTrace will be able to measure power consumption under all Awake and Low Power Modes.
    Is this correct?

    Best,
    Michael

  • 0 in reply to Michael J Schultis
    TI__Expert 6760 points

    Hello Michael,

    If you are running EnergyTrace as standalone with no debug connection, then you can measure absolute enery measurement in active and low power modes.  If you have a debug session going and you try to measure energy, then this will have the debug current being accumulated in the measurement.

     

    Regards,

    Arthi

  • 0
    Guru 227245 points
    EnergyTrace simply measures the energy drawn from the FET voltage regulator (by monitoring its switching activity). This includes all current drawn form this regulated voltage, including current needed for running the JTAG interface in the MSP as well as the current needed for the FET-side drivers, as these are supplied by the same regulator. However, this should be a fairly constant offset then.
    To use the extended EnergyTrace+ features, a debug connection is required. But reading the module status does IIRC require accessing the memory bus, so it should work in all LPMs except LPMx.5

**Attention** This is a public forum