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List:       comedi
Subject:    [PATCH][RFC] Implement INSN_CONFIG_DIO_QUERY for PFI pins [WAS:
From:       Jan Gukelberger <g.u.g.i () gmx ! de>
Date:       2005-09-29 17:03:13
Message-ID: 1128013393.4158.50.camel () elessar ! home
[Download RAW message or body]

Hi,

if the PFI pins on the NI 6025 board can be used for generic DIO it
makes sense to implement INSN_CONFIG_DIO_QUERY for those, too.
So I've tried and done the obvious. See attached patch.

Unfortunately, I don't have a very deep understanding of the driver and
ATM even haven't got a piece of hardware to test at hand. Moreover, a
quick glance at the E Series RLP Manual didn't show any examples where
the PFI pins are used for generic DIO.

So could anyone with a better understanding have a quick look and tell
me if these lines are correct or complete bullshit?

Thanks,
Jan


On Thu, 2005-09-15 at 16:02 -0500, Caleb Tennis wrote:
> On Thursday 15 September 2005 03:16 pm, Jan Gukelberger wrote:
> > Can anybody tell me what this subdev is intended for?
>
> It corresponds to the PFI pins on the 6025 board:
> 
> PFI0/TRIG1
> PFI1/TRIG2
> ...
> PFI9/GPCTR0_GATE
> 
> I believe you can use them for either generic digital IO or as the trigger, 
> gate, and source pins for the counter/timers.
> 
> Caleb


["ni_mio_common.c.diff" (ni_mio_common.c.diff)]

--- ni_mio_common.c.orig	2005-09-29 18:13:41.298150256 +0200
+++ ni_mio_common.c	2005-09-29 18:33:34.870699648 +0200
@@ -3700,6 +3700,10 @@
 	case COMEDI_INPUT:
 		ni_set_bits(dev, IO_Bidirection_Pin_Register, 1<<chan, 0);
 		break;
+	case INSN_CONFIG_DIO_QUERY:
+		data[1] = (devpriv->io_bidirection_pin_reg & (1<<chan)) ? COMEDI_OUTPUT : COMEDI_INPUT;
+		return insn->n;
+		break;
 	default:
 		return -EINVAL;
 	}

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