Hello!

I do not have a question about a specific platform... rather I have a
question about a feature that only one phone I've played with has
supported. Please let me know if I should ask in android-platform
instead... or where else I may find information on the below.

If you have the original Motorola Droid and it is powered off, as soon
as you plug it into a charger or a PC it turns on.

My question is: Is the boot on power feature handled by the hardware,
the boot rom, the boot loader, or the kernel? Is it conceivable to
turn this feature on for any phone that supports it in hardware? Is
there some setting for hboot or in one of the images (nv.img on the
HTC Droid Incredible) or somewhere that would instruct the phone to
boot when plugged in? I've work with single board computers with this
sort of feature and it is usually set in the bootldr or the bios (some
PC's even have something similar).

I suspect it may be possible on other phones besides the original
Motorola Droid. Some other phones I have played with (Droid X, Samsung
Galaxy S) run animations when the phone is powered off but plugged
into a charger/PC, so there is some code running somewhere. What would
it take to make this code boot the phone?

I am asking because I have an application where I would like to leave
a phone unattended with an extra battery, DC-DC converter, solar
charge controller, and solar panel. The setup can last for a few days
with the extra battery and forever when the sun is out most of the
time. If it is cloudy/rainy for too long, the system will loose power
and the phone will shut off. Eventually when the sun comes back the
batteries charge and the system should come back on, but it will not
since the phone will not boot. A SBC is probably more appropriate, but
the price, functionality (wifi, cell, gps, screen, audio, camera), and
power use on all these android phones is absolutely incredible.

I have searched and only found people wanting to turn off this feature
on the Motorola Droid. I want to enable it everywhere if possible.
Where else might I ask this question or search for the answer?

Thank you!

M.

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