Re: pci-das6031 board

From: <nzoji_at_portugalmail.pt> · Date: Mon, 19 Apr 2004 11:44:44 +0100

Hello Frank!

I've tried the patch and the behaviour is now different.
Now for every range/gain it reads 32000, more or less, when the input voltages
changes from -10V to +10V.
The problem seems to be in configurations bits.

Where can I find information for configuring the bits of this card (PCI-DAS6031)?

Thanks for the tip.

Citando Frank Mori Hess <fmhess_at_users.sourceforge.net>:

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 Nzoji,

 Would you try the following patch and see if it helps?

 - --- comedi/drivers/cb_pcidas64.c        30 Oct 2003 23:00:26 -0000     
 1.113
 +++ comedi/drivers/cb_pcidas64.c        18 Apr 2004 17:07:30 -0000
 _at__at_ -1485,7 +1485,7 _at__at_
         comedi_spin_lock_irqsave( &dev->spinlock, flags );

         // bit should be set for 6025, although docs say boards with <= 16
 chans should be cleared XXX
 - -       if( 1 )
 +       if(board(dev)->ai_se_chans <= 16)
                 priv(dev)->adc_control1_bits |= ADC_QUEUE_CONFIG_BIT;
         writew( priv(dev)->adc_control1_bits, priv(dev)->main_iobase +
 ADC_CONTROL1_REG );

 On Wednesday 14 April 2004 12:22 pm, nzoji_at_portugalmail.pt wrote:
 > Hello,
 >
 > I have a PCI-DAS6031 board from Measurement Computing and I'm working
 > with the comedi driver module cb_pcidas64.
 >
 > The problem is that I only can read input voltages between -0.1 and
 > 0.1V. Below this range I read 0 and above this range I read 65535 for
 > any range (0 to 13) I choose.
 >
 > Has anyone worked successfully with this board and comedi drivers?
 >
 > Thanks in advance.
 >
 >
 > Nzoji Hipolito
 > Electronics Eng. / PhD Student
 > Universidade do Minho - Portugal
 > __________________________________________________________
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 > _______________________________________________
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 > comedi_at_comedi.org
 > https://cvs.comedi.org/cgi-bin/mailman/listinfo/comedi

 - --
 Frank

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