Posted on December 04, 2015 at 19:22Hi,
In a goal of a personal project, i am trying to profile energy consumption of an ARM MCU board, so i take the ''stm32F407 discovery kit'' as an experiment example.
In my power measurement experiment i always get a really weird current curve pattern, for which i have no exact explanation and perhaps a member of this forum could answer.
As you can see it on the joined image(
http://www.noelshack.com/2015-49-1449253117-figure-1.png
), this pattern have a moutain-like form. between the highest and lowest peak we have almost ''2mA difference''.
Some notes about the measurement:
- For Power measurement i use an Agilent Power Analyzer
- it's not a default with my board. I test on multiple STM32F4 and it's always the same.
- I find also the same weird pattern on a SAM-Atmel Cortex M0 Board or a Nucleo board (with a Stm32F4 MCU)
- I don't think the problem come from my power analyzer : I performed measurement with simple resistors and i don't get this weird pastern, however i don't exclude this possibility.
Thanks in advance for every answer or indication on my problem.
Nadir,
#stm32f4 #stm32 #measure #discovery
