On Mon, 10 Apr 2000, Derek Bouius wrote:
> I am developing a parallel port peripheral that supports the 1284.3
> daisy chaining standard. I thought I could use the user space driver
> (ppdev) to do some quick development, but I don't seem to be able to
> select the dasiy chained device I want to talk to on the parport0. (Ie
> there is no IOCTL call from ppdev to do "parport_daisy_select"). Am I
> not getting something or is there a way to select the daisy device you
> want? I could write a kernel module but I would rather just have user
> space communication for now.
Ppdev doesn't export this functionality I'm afraid. You could always do
the selection yourself -- it's just a couple of writes to the data port
AFAIR.
I once toyed with the idea of having /dev/parport0daisy0 etc, but quickly
decided it was quite icky. The original idea was to encode the daisy
chain address in the device minor (the top two bits or
something). *shiver*
Tim.
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This archive was generated by hypermail 2b29 : Mon Apr 10 2000 - 10:37:17 EDT