[Arm-netbook] Keyboard

[Luke Kenneth Casson Leighton]

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


On Mon, Aug 29, 2016 at 6:04 PM, Albert ARIBAUD <albert.aribaud at free.fr> wrote:

>> - Main power status: ON/OFF/suspended (to know whether the card has
>> been completely shutdown or not)
>> - Battery status: charging/discharging/low power
>> - Disk IO LED: blinking when the disk/sd card is being read/written to
>> - Num lock, caps lock and scroll lock status LEDs: ON/OFF
>> - Wireless and/or bluetooth status LED: ON/OFF (some USB adapters do
>> have a led but they won't be visible if they are plugged in the
>> internal USB)
>
> All this can be realized some way or other through the touchpad
> which is actually a TS+LCD. At least for those features for which the
> main CPU is on, there is no problem: Wireless, BT, key lock status can
> be shown there. Complex displays will be a bit trickier with the A20 off
> and only the STM32 powered, but we can still manage some simple display
> of e.g. the battery charging status.

 yep.  it's all going to have to be managed through the STM32F072.
the plan is to use /dev/ttyACM0 endpoint (or similar) and a simple
serial protocol communicating between EOMA68 1st USB port and the
STM32F072.

l.