ARM Energy Probe

Software is ultimately responsible for energy efficiency

The ARM processor processor technology stands out due to the indisputable energy efficiency. Between the processor itself and the final product shipping, many things can dramatically impact on energy consumption. The software can mke all the difference concerning the power consumption In this respect.

When using DS-5 with the Streamline performance analysis, the ARM Energy probe can assist in the optimization of the software. In this combination Streamline can acquire real power data from your board and correlate it with all the other software and hardware statistics, including DVFS and cpuidle, to show you the true picture of your power management. Alternatively, Streamline can read and display these measurements directly from your Linux hwmon subsystem.

Power measurement in the hands of  software developers

The Energy Probe has been specifically designed with software developers in mind. Its easy setup and low cost make it ideal to be incorporated in the workflow of all software developers. The probe does not require any additional debug or trace hardware to analyze Linux or Android™ systems. Measurement channels acquire the voltage drop across sense resistors on the target board and send to the host via USB 2.0. The synchronization of Energy Probe and target data is done on the PC using DSP algorithms that correlate CPU power consumption with load.

Watch the Energy Probe introduction video

Specifications

ParameterValue
Number of measurement channels3
Voltage measurementyes
Current measurementyes
Power measurementyes
Energy consumption visualizationyes
Maximum voltage15V
Maximum Vsense voltage 165mV
Maximum error (for 20mV < Vsense < 165mV)±5%
ADC resolution10 bit
Sampling rate10kHz
Host connectionUSB 2.0
Required DS-5 version5.9 or newer