script/lsec
author Florian Pose <fp@igh-essen.com>
Mon, 28 Jul 2008 08:30:44 +0000
branchstable-1.3
changeset 1757 c5757cebfaea
parent 1751 b6cfd85db58e
child 1760 036f19bde00b
permissions -rwxr-xr-x
merge -c1374 trunk: Missing spin_lock_irqrestore() protection.
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#!/usr/bin/perl
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#------------------------------------------------------------------------------
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#
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#  l s e c  -  List EtherCAT
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#
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#  Userspace tool for listing EtherCAT slaves.
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#
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#  $Id$
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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; either version 2 of the
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#  License, or (at your option) any later version.
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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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#  The right to use EtherCAT Technology is granted and comes free of
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#  charge under condition of compatibility of product made by
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#  Licensee. People intending to distribute/sell products based on the
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#  code, have to sign an agreement to guarantee that products using
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#  software based on IgH EtherCAT master stay compatible with the actual
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#  EtherCAT specification (which are released themselves as an open
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#  standard) as the (only) precondition to have the right to use EtherCAT
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#  Technology, IP and trade marks.
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#
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#------------------------------------------------------------------------------
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require 'sys/ioctl.ph';
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use strict;
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use Getopt::Std;
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my %opt;
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my $master_index;
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my $term_width;
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#------------------------------------------------------------------------------
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$term_width = &get_terminal_width;
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&get_options;
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&query;
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exit 0;
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#------------------------------------------------------------------------------
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sub query
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{
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    my $master_dir;
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    my $dirhandle;
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    my $entry;
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    my $slave_info_file;
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    my @slaves;
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    my $slave;
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    my $line;
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    my $ring_col_width;
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    my $alias_col_width;
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    my $fmt;
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    my $width;
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    my $last_alias;
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    my $alias_index;
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    my $category;
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    $master_dir = "/sys/ethercat/master" . $master_index;
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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 = {};
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        $slave_info_file = "$master_dir/$entry/info"; 
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        open INFO, $slave_info_file or die
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            "ERROR: Failed to open $slave_info_file.";
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        $category = "";
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        while ($line = <INFO>) {
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            # remember category
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            if ($line =~ /^([^\s][^:]*):$/) {
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                $category = $1;
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            } elsif ($line =~ /^\s*$/) {
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                $category = "";
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            }
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            if ($category eq "") {
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                if ($line =~ /^Ring position: (\d+)$/) {
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                    $slave->{'ring_position'} = $1;
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                } elsif ($line =~ /^State: (.+) /) {
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                    $slave->{'state'} = $1;
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                } elsif ($line =~ /^Configured station alias: .* \((\d+)\)$/) {
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                    $slave->{'alias'} = $1;
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                } elsif ($line =~ /^Current consumption: (-?\d+) mA$/) {
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                    $slave->{'current'} = $1;
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                }
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            } elsif ($category eq "Identity") {
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                if ($line =~ /Vendor ID: .* \((\d+)\)$/) {
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                    $slave->{'vendor'} = $1;
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                } elsif ($line =~ /Product code: .* \((\d+)\)$/) {
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                    $slave->{'product'} = $1;
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   114
                }
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   115
            } elsif ($category eq "General") {
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   116
                if ($line =~ /Name: (.*)$/) {
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                    $slave->{'name'} = $1;
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   118
                }
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   119
            }
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   120
        }
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   121
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        close INFO;
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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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    # create field addresses and calculate column widths
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    $ring_col_width = 0;
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    $alias_col_width = 0;
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    $last_alias = "";
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    for $slave (@slaves) {
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        if ($slave->{'alias'}) {
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            $last_alias = $slave->{'alias'};
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            $alias_index = 0;
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   137
        }
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   138
        if ($last_alias) {
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   139
            $slave->{'field_address'} = "#" . $last_alias . ":" . $alias_index;
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            $width = length $slave->{'field_address'};
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   141
            $alias_col_width = $width if ($width > $alias_col_width);
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   142
        }
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   143
        $width = length $slave->{'ring_position'};
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        $ring_col_width = $width if ($width > $ring_col_width);
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   145
        $alias_index++;
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   146
    }
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   147
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   148
    # replace empty name with vendor id and product code
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   149
    for $slave (@slaves) {
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   150
        unless (defined $slave->{'name'}) {
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   151
            $slave->{'name'} = sprintf("0x%08X:0x%08X", $slave->{'vendor'},
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   152
                    $slave->{'product'});
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   153
        }
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   154
    }
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   155
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   156
    if (defined $opt{'c'}) { # display power consumtion
1744
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   157
        $fmt = sprintf " %%%is  %%%is  %%6i  %%6i  %%s\n",
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   158
            $ring_col_width, $alias_col_width;
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   159
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        my $current_sum = 0;
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   161
        for $slave (@slaves) {
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   162
            &print_line if $slave->{'alias'} and !defined $opt{n};
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   163
            $current_sum = 0 if $slave->{'current'} < 0;
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   164
            $current_sum -= $slave->{'current'};
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   165
            printf($fmt, $slave->{'ring_position'}, $slave->{'field_address'},
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   166
                    $slave->{'current'}, $current_sum, $slave->{'name'});
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   167
        }
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   168
    }
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   169
    else { # normal display
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   170
        $fmt = sprintf " %%%is  %%%is  %%-6s  %%s\n",
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   171
            $ring_col_width, $alias_col_width;
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   172
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   173
        for $slave (@slaves) {
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   174
            &print_line if $slave->{'alias'} and !defined $opt{n};
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   175
            printf($fmt, $slave->{'ring_position'}, $slave->{'field_address'},
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   176
                    $slave->{'state'}, $slave->{'name'});
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   177
        }
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   178
    }
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   179
}
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   180
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   181
#------------------------------------------------------------------------------
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   182
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   183
sub get_options
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   184
{
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   185
    my $optret = getopts "m:cnh", \%opt;
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   186
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   187
    &print_usage if defined $opt{h} or $#ARGV > -1 or !$optret;
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   188
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   189
    if (defined $opt{m}) {
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   190
        $master_index = $opt{m};
1740
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diff changeset
   191
    }
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   192
    else {
1744
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   193
        $master_index = 0;
1740
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   194
    }
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   195
}
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   196
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   197
#------------------------------------------------------------------------------
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   198
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   199
sub print_usage
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   200
{
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   201
    my $cmd = `basename $0`;
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   202
    chomp $cmd;
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   203
    print "Usage: $cmd [OPTIONS]\n";
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diff changeset
   204
    print "        -m <IDX>    Query master <IDX>.\n";
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   205
    print "        -c          Display current [mA] ";
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diff changeset
   206
    print "(3: consumption, 4: remaining).\n";
1751
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diff changeset
   207
    print "        -n          Do not display lines before aliased slaves.\n";
1740
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   208
    print "        -h          Show this help.\n";
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   209
    exit 0;
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diff changeset
   210
}
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   211
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   212
#------------------------------------------------------------------------------
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   213
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   214
sub get_terminal_width
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   215
{
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   216
    my $winsize;
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   217
    die "no TIOCGWINSZ " unless defined &TIOCGWINSZ;
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   218
    open(TTY, "+</dev/tty") or die "No tty: $!";
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diff changeset
   219
    unless (ioctl(TTY, &TIOCGWINSZ, $winsize='')) {
1744
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   220
        die sprintf "$0: ioctl TIOCGWINSZ (%08x: $!)\n", &TIOCGWINSZ;
1740
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diff changeset
   221
    }
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   222
    (my $row, my $col, my $xpixel, my $ypixel) = unpack('S4', $winsize);
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   223
    return $col;
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diff changeset
   224
}
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   225
#------------------------------------------------------------------------------
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   226
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sub print_line
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{
1744
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    for (my $i = 0; $i < $term_width; $i++) {
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        print "-";
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    }
1740
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    print "\n";
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}
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#------------------------------------------------------------------------------