[Arm-netbook] EOMA68 laptop housing battery control

[Luke Kenneth Casson Leighton]

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crowd-funded eco-conscious hardware: https://www.crowdsupply.com/eoma68


On Thu, Nov 24, 2016 at 4:43 PM, Adam Van Ymeren <adam.vany at gmail.com> wrote:

>>  it's actually going to be connected to the STM32F072, which also
>> controls the power and has a RTC, and also controls the 320x240 LCD
>> display so that battery status can be displayed on that whilst the
>> Card is completely powered off.
>
> Oh interesting, sorry for speculating incorrectly.

 nono, i had to think about it myself for a minute, as i've been
focussing on the RK3288, S5P6818 and A20 boards for a while :)

>  That small LCD
> screen is a really cool feature, and a clever idea for the touchpad.

 well it's dead simple, i just can't get hold of touchpads - i mean
you can't even *find* the damn things on the internet (try searching
for a supplier, you'll see what i mean, immediately), and the
ridiculous thing i've learned from being here is, that doesn't change
just because you're in china: the place is too big, and the internet
access is too s**t!

 yeah the split design means i can't expect the Cards to have a
built-in backup battery, so no RTC.  therefore the STM32F072 handles
it.  also i can't rely on the Card being powered up all the time just
to manage "random stuff" (plus for the truly paranoid they will want
to take it out of the Housing).  therefore there *has* to be a
separate EC for charging, power management etc. etc.

 in a monolithic SBC design yes you'd directly wire the battery ICs to
the processor (ok maybe: in a low-cost system definitely).

l.