Re: PCI-DIO-96 problems

On Mon, Jun 03, 2002 at 03:34:08PM -0400, Patrick Allison wrote:
> Hello -
> 
> We're working on setting up a small data acquistion system using Comedi,
> and we've run into problems that we could use some help with. (comedi
> v.0.7.64 and comedilib v0.7.18)
> 
> We've purchased two data acquisition cards: a Nat. Inst. PCI-6025E multi
> I/O card which (so far) works fine, and a Nat. Inst. PCI-DIO-96 which is
> misbehaving quite badly.
> 
> Any code that outputs to the PCI-DIO-96 doesn't appear to do anything
> physical. All of the bits are stuck high (5V). However, if I write
> values to the board, and then switch the channel to an 'input', and read
> back, the values read back are the values that were written. It's just
> that we don't see that on the actual output of the board.

Since the 8255 is working on the PCI-6025E, the likely cause of the
problem is either nidio96_8255_cb() in ni_pcidio.c, or the
initialization code for the board.  nidio96_8255_cb() appears
to be doing the correct thing according to the manual.

Are driven inputs read correctly?

Otherwise, everything appears to be ok.



dave...

Received on 2002-06-03Z19:14:32