--- crowd-funded eco-conscious hardware: https://www.crowdsupply.com/eoma68
On Thu, Nov 24, 2016 at 4:43 PM, Adam Van Ymeren adam.vany@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.