PCI-1751 DI/DO control

• From: <Vova_at_mouse.berc.rssi.ru>
• Date: Thu, 05 Feb 2004 11:38:42 +0300

I have Advantech PCI-1751, Linux Slackware 9.0 with kernel 2.4.20 and
installed comedi.

Comedi run so:

/sbin/modprobe comedi
/sbin/modprobe pci1751
/usr/sbin/comedi_config /dev/comedi0 pci1751

program "info" shows:
.....
subdevice 2:
   type: 3 (digital input)
   number of channels: 48
   ....
   command:
       non supported
subdevice 3:
   typy: 4 (digital output)
   number of channels: 48
   ....
   command:
       not supported.
....
In my program I succesfully open /dev/comedi0,  and when I do 
rev = comedi_dio_write(device,3, i, 1)
I have rev=1 and output of channel i equals "1" ( i corresponds to PortA0,
Port B0 & PortC0).
But when I do
rev = comedi_dio_read(device, 2, j, &r) (j corresponds PoetA1, PoerB1 &
PortC1)
I have rev=0 and r don't equals to in input signal on connrctor.
When I do
rev=comedi_dio_config(device, 3, i, COMEDI_OUTPUT)
I have rev=-1
rev=comedi_dio_config(device, 2, j,COMEDI_INPUT)
I have rev=-1.
How is it possible to control DI/DO in PCI-1751?

Received on 2004-02-05Z08:38:42