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→Measuring power consumption
Please note that OPP transactions may be prevented at all by manually configuring the governor in order to use a fixed OPP.
For more details please refer to [[Linux_and_interrupt_latency_(Axel) |this page]].
==Processor heating and lifetime==
<ref name="AN4725">Freescale Semiconductor, Inc., ''AN4725 i.MX 6Solo/6DualLite Product Lifetime Usage Estimates''</ref>.
==Measuring power consumption==
[[AxelEVB-Lite|AxelEVB]] integrates a chip (Texas Instruments INA226) that allows to measure the power consumption of the Axel SOM. Following are the instructions to perform basic measurements (tested with the Linux kernel released with [[Axel_Embedded_Linux_Kit_(XELK)|XELK 2.3.0]]).
SOM power consumption measurements are available to be read from userspace via <code>sysfs</code> entries. Following are the entries for:
* Voltage expressed in mV:
<pre>
root@axel-lite:~# cat /sys/class/hwmon/hwmon0/device/in0_input
5
root@axel-lite:~# cat /sys/class/hwmon/hwmon0/device/in1_input
3286
</pre>
* Current expressed in mA:
<pre>
root@axel-lite:~# cat /sys/class/hwmon/hwmon0/device/curr1_input
425
</pre>
* Power expressed in uW:
<pre>
root@axel-lite:~# cat /sys/class/hwmon/hwmon0/device/power1_input
1500000
</pre>
INA225 - referenced as U25 on AxelEVB - is very flexible. For more details about possible please refer to its data sheet (http://www.ti.com/product/INA226).
==Useful links==
*[[FAQs (Axel)]]
*[[Thermal management (Axel)]]
*[[Power consumption (AxelLite)]]
==References==
{{reflist}}
