Specifications

Comedi
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ranges:
all chans: [0,1]
command:
not supported
This board has four subdevices. Devices are separated into subdevices that each have a distinct purpose; e.g., analog input, analog
output, digital input/output.
Here’s the information from Comedi’s /proc/comedi file, which indicates what drivers are loaded and which boards are
configured:
cat /proc/comedi
comedi version 0.7.76
format string: "%2d: %-20s %-20s %4d",i,driver_name,board_name,n_subdevices
0: usbduxsigma usbduxsigma 4
usbduxfast:
usbduxfast
usbduxsigma:
usbduxsigma
This documentation feature currently returns the driver name, the device name, and the number of subdevices. Following those
lines are a list of the Comedi kernel driver modules currently loaded, each followed by a list of the board names it recognizes
(names that can be used with comedi_config).
3 Writing Comedi programs
This section describes how Comedi can be used in an application, to communicate data with a set of Comedi devices. Section 4
gives more details about the various acquisition functions with which the application programmer can perform data acquisition
in Comedi.
Also don’t forget to take a good look at the demo directory of the Comedilib source code. It contains lots of examples for the
basic functionalities of Comedi.
3.1 Your first Comedi program
This example requires a card that has analog or digital input. This progam opens the device, gets the data, and prints it out:
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Tutorial example #1
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Part of Comedilib
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Copyright (c) 1999,2000 David A. Schleef <[e-mail]>
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This file may be freely modified, distributed, and combined with
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other software, as long as proper attribution is given in the
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source code.
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#include <stdio.h> /
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for printf()
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#include <comedilib.h>
int subdev = 0; /
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change this to your input subdevice
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int chan = 0; /
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change this to your channel
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int range = 0; /
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more on this later
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int aref = AREF_GROUND; /
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more on this later
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/
int main(int argc,char
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argv[])