GPIB::ni - Perl-GPIB interface for National Instruments GPIB device drivers
use GPIB; $g = GPIB->new("name"); $g->ibwrt('*IDN?'); print $g->ibrd(1024);
GPIB::ni is an interface module for accessing National Instruments GPIB devices. This XS module builds and has been tested on Linux and Windows NT. This module is normally not used directly, but called by GPIB.pm according to an entry in /etc/pgpib.conf or by calling GPIB->new() and passing GPIB::ni as the first parameter.
A typical /etc/pgpib.conf entry for using GPIB::ni is shown below:
# name Board PAD SAD TMO EOT EOS K2002 GPIB::ni 0 0x10 0 T1s 1 0
The device is used in a Perl program as follows:
use GPIB; $g = GPIB->new("K2002");
In the above example, the K2002 entry provides GPIB::ni with 6 parameters that coorespond to the parameters to ibdev() for opening a device. This is the most common form for configuring a GPIB device. Alternatively, if only 1 parameter is supplied for GPIB::ni ibfind() is called to open the device. Here is an example for opening the GPIB directly on GPIB board 0 in a system:
# /etc/pgpib.conf bus GPIB::ni gpib0 use GPIB; $g = GPIB->new("bus");
The intention is that a Perl GPIB program should run identically on a Windows or Linux platform. This is pretty much true but there are a couple of small differences in the NI driver.
The Linux driver deasserts REN when the application closes the driver and exits. NT4.0 seems to leave REN asserted unless the application specifically opens the bus and manually deasserts REN.
This module is loosely based on a Perl XS module Steve Tell at UNC (tell@cs.unc.edu) wrote for accessing GPIB devices from Perl.
Jeff Mock, jeff@mock.com
perl(1), GPIB(3), GPIB::hpserial(3), GPIB::rmt(3).
To install GPIB, copy and paste the appropriate command in to your terminal.
cpanm
cpanm GPIB
CPAN shell
perl -MCPAN -e shell install GPIB
For more information on module installation, please visit the detailed CPAN module installation guide.