--- In Jim Jackson <> wrote:
>
>
>
>
> On Thu, 11 Jun 2009, j.chitte wrote:
>
> > For the moment it's segfaulting off the bat.
> >
> > I have not really got into debugging what's wrong yet but the obvious
> > part to look at is the MMAP macro that creates a mapping to the IO ports
> > on the board.
> >
> > The other doubt I had was I have the max197 driver in the kernel. Is that
> > going to lock acces to those ports and prevent adc_logger from mapping
> > them.
>
> Err... not sure about locking access - it might do.
>
> In general it is not a good idea to have 2 programs accessing the same
> hardware, unless they co-operate.
>
> Modify the user space program to just use the ADC kernel module
>
Well happily it just compiled straight up and works. Since I'm not touching the
kernel driver it seems not to raise any problems.
I will migrate it later. The first objective is to port what I have to eabi.
That is nearly completed.
However the speed increase I'm getting running gnuplot on eabi is nowhere near
what some benchmarks had suggested.
It's nearer 2x faster than 18x faster. That's still worth having but a bit of a
disappointment.
I guess gnuplot must be doing a lot of non FP work as well.
Thanks for the reply.
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