Re: [PARPORT] searching example for ppdev and interupt

From: norman (norman@elbestrom.boerde.de)
Date: Tue Feb 26 2002 - 09:43:50 EST

  • Next message: Tim Waugh: "Re: [PARPORT] searching example for ppdev and interupt"

    > I think there is an example of just that at
    > <http://cyberelk.net/tim/parport/html/>.

    /* Set up the control lines when an interrupt happens. */
    ioctl (fd, PPWCTLONIRQ, &busy);

    /* Now we're ready. */
    ioctl (fd, PPWCONTROL, &ready);

    /* Wait for an interrupt. */
           {
             fd_set rfds;
             FD_ZERO (&rfds);
             FD_SET (fd, &rfds);
             if (!select (fd + 1, &rfds, NULL, NULL, NULL))
               /* Caught a signal? */
               continue;
           }

    so (!select (fd + 1, &rfds, NULL, NULL, NULL) is true if an int was send ?

    and how can i trigger the acc line ? just connect ground with pin 10 ?

    norman.

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