--- crowd-funded eco-conscious hardware: https://www.crowdsupply.com/eoma68
On Mon, Aug 29, 2016 at 6:04 PM, Albert ARIBAUD albert.aribaud@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.