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?o Mouro > Dear Jmouro, > > in message <5bf7b05c1bab.5c1bab5bf7b0 at 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 at denx.de > Overdrawn? But I still have checks left! > > ** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/
