tools/ec_list.pl
author Florian Pose <fp@igh-essen.com>
Tue, 09 May 2006 10:13:53 +0000
changeset 219 7572c5bf7bb3
parent 197 b9a6e2c22745
child 246 0bf7c769de06
permissions -rw-r--r--
EoE documentation updates.
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#!/usr/bin/perl
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#------------------------------------------------------------------------------
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#
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#  e c _ l i s t . p l
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#
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#  Userspace tool for listing EtherCAT slaves.
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#
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#  $Id: slave.c 340 2006-04-11 10:17:30Z fp $
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#
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#  Copyright (C) 2006  Florian Pose, Ingenieurgemeinschaft IgH
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#
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#  This file is part of the IgH EtherCAT Master.
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#
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#  The IgH EtherCAT Master is free software; you can redistribute it
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#  and/or modify it under the terms of the GNU General Public License
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#  as published by the Free Software Foundation; version 2 of the License.
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#
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#  The IgH EtherCAT Master is distributed in the hope that it will be
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#  useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
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#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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#  GNU General Public License for more details.
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#
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#  You should have received a copy of the GNU General Public License
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#  along with the IgH EtherCAT Master; if not, write to the Free Software
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#  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
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#
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#------------------------------------------------------------------------------
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use strict;
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use Getopt::Std;
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my $master_index;
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my $master_dir;
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#------------------------------------------------------------------------------
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&get_options;
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&query_master;
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exit 0;
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#------------------------------------------------------------------------------
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sub query_master
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{
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    $master_dir = "/sys/ethercat" . $master_index;
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    &query_slaves;
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}
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#------------------------------------------------------------------------------
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sub query_slaves
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{
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    my $dirhandle;
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    my $slave_dir;
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    my $entry;
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    my $slave_index;
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    my $file_name;
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    my $vendor_name;
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    my @slaves;
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    my $slave;
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    my $abs;
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    unless (opendir $dirhandle, $master_dir) {
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	print "Failed to open directory \"$master_dir\".\n";
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	exit 1;
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    }
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    while ($entry = readdir $dirhandle) {
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        next unless $entry =~ /^slave(\d+)$/;
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	$slave_dir = $master_dir . "/" . $entry;
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	$slave = {};
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	$slave->{'ring_position'} =
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	    &read_integer("$slave_dir/ring_position");
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	$slave->{'coupler_address'} =
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	    &read_string("$slave_dir/coupler_address");
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	$slave->{'vendor_name'} =
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	    &read_string("$slave_dir/vendor_name");
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	$slave->{'product_name'} =
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	    &read_string("$slave_dir/product_name");
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	$slave->{'product_desc'} =
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	    &read_string("$slave_dir/product_desc");
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	$slave->{'type'} =
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	    &read_string("$slave_dir/type");
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	push @slaves, $slave;
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    }
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    closedir $dirhandle;
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    @slaves = sort { $a->{'ring_position'} <=> $b->{'ring_position'} } @slaves;
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    print "EtherCAT bus listing for master $master_index:\n";
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    for $slave (@slaves) {
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	if ($slave->{'type'} eq "coupler") {
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	    print "--------------------------------------------------------\n";
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	}
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	$abs = sprintf "%i", $slave->{'ring_position'};
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	printf(" %3s %8s   %-12s %-10s %s\n", $abs,
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	       $slave->{'coupler_address'}, $slave->{'vendor_name'},
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	       $slave->{'product_name'}, $slave->{'product_desc'});
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    }
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}
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#------------------------------------------------------------------------------
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sub read_string
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{
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    (my $file_name) = @_;
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    my $data;
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    $data = `cat $file_name 2>/dev/null`;
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    if ($?) {
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	print "ERROR: Unable to read string $file_name!\n";
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	exit 1;
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    }
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    chomp $data;
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    return $data;
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}
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#------------------------------------------------------------------------------
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sub read_integer
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{
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    (my $file_name) = @_;
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    if (`cat $file_name 2>/dev/null` !~ /^(\d+)$/) {
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	print "ERROR: Unable to read integer $file_name!\n";
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	exit 1;
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    }
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    return int $1;
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}
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#------------------------------------------------------------------------------
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sub get_options
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{
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    my %opt;
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    my $optret;
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    $optret = getopts "m:h", \%opt;
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    &print_usage if defined $opt{'h'} or $#ARGV > -1;
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    if (defined $opt{'m'}) {
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	$master_index = $opt{'m'};
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    }
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    else {
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	$master_index = 0;
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    }
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}
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#------------------------------------------------------------------------------
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sub print_usage
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{
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    print "Usage: ec_list [OPTIONS]\n";
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    print "        -m <IDX>    Query master IDX.\n";
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    print "        -h          Show this help.\n";
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    exit 0;
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}
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#------------------------------------------------------------------------------