Re: [ECOS] odd serial input bug in redboot 095308 20010607 on iP

[David Bliss <david at ytterby dot dbsi dot org>]

On Fri, Jun 08, 2001 at 09:02:51AM -0600, Gary Thomas wrote:
> 
> I've never seen this and I _have_ put RedBoot on a number of iPAQ units.
> Which is not to say, "I don't believe you".
> 
> What happens if you press the reset button (small indent on the bottom 
> of the unit)?

Same behaviour as 'reset'.  If it was previously working, it continues to
work.  If it was previously not working it continues to not work.

> The most likely cause is that when powered on cold, on your unit, the keypad
> or the touch screen are presenting some events.  This will be interpreted by
> RedBoot as an attempt to use the keypad/touchscreen for input and activity
> on the serial port will cease.  Remember that RedBoot tries to use any available
> I/O device when first booted and then "settles" for the first one that actually
> gets any input.

Possible, but on first touchscreen input, the screen 'blinks' in the same
way that it did when settling on an input device (whether screen or touchpad)
when running from WinCE.

> As an experiment, you could try installing a version which subverts this
> behaviour.  We could also try to learn what's coming in from where (keypad
> or touch screen) to see what's up here.

I'd be glad to do so if you'll assist me in locating/preparing such an image
:)

Thanks,
david