On Dec 18, 2006, at 17:35 , Jordan Crouse wrote:
On 17/12/06 20:50 +0000, Chris Ball wrote:
On Sun, 17 Dec 2006 13:05:52, Dan Williams <[EMAIL PROTECTED]> said:
I can't remember if I ever got a straight answer on this. Is there
a switch somewhere that we can access that indicates whether or not
the laptop has been swiveled into ebook mode?
This is <http://dev.laptop.org/ticket/467>.
Ideally, the switch would generate an interrupt which we could
receive and automatically rotate the X display and switch to B&W
mode when the keyboard is hidden [1]. It's not a great experience
to have to expose a toggle somewhere if we can't figure out when
we're in ebook mode, especially if we had to rely on activities to
provide that toggle in their own UI.
Yeah, it looks like we have the bit, but we don't want to poll it and
Quanta are blocking on us working out an interface for interrupts,
as in
<http://dev.laptop.org/ticket/224>. Could we get someone to own
that?
This reminds me - I've been meaning to ask how the switches
actually work.
There are two of them - one with the output marked PWR_BUT_in and
the other
with the output marked EB_MODE. I understand from the product
datasheets
that these are Hall Effect sensors, which in effect detect the
presence
of a magnetic field nearby. Sensor one (PWR_BUT_in) is located on the
LCD side of the board at the top right near the notch. Sensor two
(EB_MODE) is located on the processor side in the same location. From
the position of sensor 1, I am assuming that it detects a lid
opening, and
the magnetic field is located in the base. I can't at all figure
out where
the magnet is for sensor 2, nor how it detects EB mode.
So - long story short, where the heck are the magnets? :)
When you turn the display around, wouldn't the second sensor then
come to rest near the same magnet? So you only need one magnet for both?
- Bert -
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