Re: PCMCIA polling!?!

[jmouro@iol.pt]

Hi,
in fact the system I'm working in,
uses the PCMCIA input ports as general purpose input ports.
Some signals are used to configure an Altera FPGA device, and 2 signals =
are connected to a power supply unit(PSU). The PSU must signal the PPC =
when a power fail occurs, and this is done by those 2 signals.
Can the system use edge detection and interrupt capability (on those 2 =
lines - IPA6 IPA7) or shall it perform a polling.
Thanks for your attention

Jo=E3o Mouro


> Dear Jmouro,
>
> in message <5bf7b05c1bab.5c1bab5bf7b0@iol.pt> you wrote:
> >
> > I'm working on a embedded system with a  TQM860L, and a I have a
> doubt that perhaps you might answer.
> > I've 2 signals related with system defects (power supply
> defects) connected to PCMCIA channel II (IPBx). Is there a way to
> check if those signals where triggered without polling them? Like
> in interrupt lines? In that way I could
>
> Maybe you can explain what exactly you are  trying  to  do?  Actually
> there are 4 voltage detect lines: CBVS1/2 (Voltage Sense 1 and 2) and
> CBBVD1/2  (Battery  Voltage  Detect 1 and 2). Interrupts can be abled
> individualy for each of the 4 pins in  the  PCMCIA  Interface  Enable
> Register.
>
> But normally you don't have to care about this stuff - if you want to
> use a PCMCIA Card with the system the PCMCIA  Card  Services  package
> will  handle  all  such  events.  PCMCIA Card Service support for the
> TQM8xxL modules / STK8xxL starter kit  is  ready  available  -  don't
> re-invent the wheel.
>
>
>
> Best regards,
>
> Wolfgang Denk
>
> --
> Software Engineering:  Embedded and Realtime Systems,  Embedded Linux
> Phone: (+49)-8142-4596-87  Fax: (+49)-8142-4596-88  Email: wd@denx.de
> Overdrawn?  But I still have checks left!
>
>


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