> Is there a message an app can intercept when the Omnigo wakes up from its
> shutdown mode (via the ON key). I have a terminal-type application that
This is what the SDK FAQ (from www.geoworks.com, Developer Relations -
recommended!) has to say about this...
ciao marcus
===
Q. How can my application detect when the user has turned the power
on or off on the OmniGo 100?
A. First of all, unless your application is affected by external events
(such as serial input) or for some other reason needs to know when
the OmniGo powers on or off, you should not worry about power
notifications.
If your application does require this information, then it can
register a notification routine with the power driver. There is
only a limited number of vectors available, so your registration
is not guaranteed to be successful.
During device power down, there is nothing you can do to prevent the
powerdown.
On powerup, your routine can @send a message to let your application
know that unit is powering back on. The notification routine should
be small to prevent power on/off from becoming sluggish.
Here is how you register for notification:
#define DR_POWER_ON_OFF_NOTIFY (26)
GeodeHandle powerDriverHandle;
DriverPassParams passParams;
DriverReturnParams returnParams;
powerDriverHandle = GeodeGetDefaultDriver(GDDT_POWER_MANAGEMENT);
...
DriverCallEntryPoint (powerDriverHandle,
DR_POWER_ON_OFF_NOTIFY,
&passParams,
&returnParams);
In passParams, dx:cx = fptr to call back routine.
returnParams will have carry set if you could not register for the
notification (because too many routines are already registered).
The callback routine must be written in assembly because the ax
register will contain either ax = 0 (PNC_POWER_SHUTTING_OFF) or
ax = 1 (PNC_POWER_TURNING_ON).