On Sat, 6 Dec 2008 22:53:04 -0800, "ron minnich" <[EMAIL PROTECTED]>
wrote:
> On Sat, Dec 6, 2008 at 9:52 PM, Joseph Smith <[EMAIL PROTECTED]> wrote:
>
>> cat /proc/sys/dev/parport/parport0/base-addr
>> 888 1912
>> Then turn the first number into hex (888 => 0x378)
>
> boy do I feel dumb! I forgot entirely about that.
>
> But why not use Stefan's idea of /dev/parportX?
>
> Why do all this other work?
>
>From everything I have read, there are two main ways to get control over
the parallel port.
One way is to use /dev/parportX. The /dev/parportX method is a higher level
driver. I'm still looking into this to see if it will be better. I think
Stefan was referring to the parport_find_base() function which wouldn't
work for me. For that you input a base address and it returns the
corresponding parallel port.
The other method is directly controlling the I/O. It is a lower level
driver directly accessing the hardware. It is supposed to be faster, which
will be good for flashing. It is also very simple, using outb and inb. This
is the method I prefer. But it seems in all the examples I have looked at
the the base address is statically defined. That is what I am trying to do
is automate that.
--
Thanks,
Joseph Smith
Set-Top-Linux
www.settoplinux.org
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