I just checked your patch. One idea:
Probably the reading/writing of the gpio input generates another interrupt,
which in turn again accesses the gpio register? If I have it right, then the
original software disables the interrupt (GPIOH_INT_CLEAR), before reading
the registers and reenables the irq again at the end of the irq routine.
----- Original Message -----
From: "Michael Sevakis" <[EMAIL PROTECTED]>
To: "Barry Wardell" <[EMAIL PROTECTED]>; "Rockbox development"
<rockbox-dev@cool.haxx.se>
Sent: Wednesday, May 09, 2007 5:33 PM
Subject: Re: Sansa (PP502x?) GPIO interrupts in rockbox software
It doesn't seem to actually enable the GPIO interrupts.
When I do, thinks break badly with rockbox stuck at a black screen when
the
logo should be displayed but GPIO IRQs functional. The firmware doesn't
seem
to actually be running because the buttons themselves are still being
polled
and do work otherwise.
Here the quick tester which I'd expect to have boot, disable the
scrollwheel
and blink when turned. It only does the latter two.
You'll get some warnings but that's irrelevant to this check.
----- Original Message -----
From: "Barry Wardell" <[EMAIL PROTECTED]>
To: "Michael Sevakis" <[EMAIL PROTECTED]>; "Rockbox development"
<rockbox-dev@cool.haxx.se>
Sent: Wednesday, May 09, 2007 4:34 AM
Subject: Re: Sansa (PP502x?) GPIO interrupts in rockbox software
On 5/9/07, Michael Sevakis <[EMAIL PROTECTED]> wrote:
> I would've whipped up a IRQ button driver real quick and committed it
but I
> see I've been beaten to it while fixing playback bugs. :)
Well apparently the one I posted has some problems with it still and I
still don't have my Sansa with me for testing so I can't do much more
with it for now. Feel free to fix it up and commit ;)
One word of caution - it was based on a older version of the button
driver, so some of the newer fixes that were added in the past while
may not be present.
