I understand that this question has been asked before in various forms and apologize to those who think this is a useless question. Go easy on me (first time poster).
I am working on using the BBB in an embedded environment. It has the power I need to do image capture and machine vision processing as well as light control and data logging.
The issue is that I only need to power it on once every 5 minutes (for a very brief time).
I am looking into power management and see that some people have discussed kernel 3.12 as being better than 3.8, others discussing using android. Is there anybody who can definitively point me to how to control sleep or standby states in between readings (with wake up by RTC or interrupt)?
The SoC can do it but has anybody succesfully compiled a distro that takes advantage of power management?
Thank you so much,
ruben
I understand that this question has been asked before in various forms and apologize to those who think this is a useless question. Go easy on me (first time poster).
I am working on using the BBB in an embedded environment. It has the power I need to do image capture and machine vision processing as well as light control and data logging.
The issue is that I only need to power it on once every 5 minutes (for a very brief time).
I am looking into power management and see that some people have discussed kernel 3.12 as being better than 3.8, others discussing using android. Is there anybody who can definitively point me to how to control sleep or standby states in between readings (with wake up by RTC or interrupt)?
The SoC can do it but has anybody succesfully compiled a distro that takes advantage of power management?
I haven’t played with this myself, but a quick search on google will get you the info you need to do what you want. Here is a page for Archlinux and since Robert’s Debian build uses Systemd, some of these concepts might apply.
https://wiki.archlinux.org/index.php/Suspend_and_Hibernate
Regards,
John
Based upon Robert’s recent reply here, I’m going to assume that I am not up to the task of trying to figure out how to build a kernel with sleep state enabled (as a BB newbie). What a pity. Now, he does say hibernate and not simply low power state. Hibernating isn’t as important as suspending or changing frequency. I’ll keep poking around.
Hello,
I’m using the Beaglebone Black with Ubuntu 12.04 (an image based on Robert Nelson’s 3.8 Kernel and downloaded from http://www.armhf.com/index.php/boards/beaglebone-black/#precise). What support is there for power saving features? How can I put the machine into a suspend or a hibernate mode? Get it out of said state? I really appreciate your feedback.
-David
Hi David,
Hibernate support does not currently work in any of the existing mainline based kernels for the TI am335x line. When it does work the standard.
echo mem > /sys/power/state
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Will apply.
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