File Coverage

blib/lib/Device/USB/TranceVibrator.pm

Criterion	Covered	Total	%
statement	10	12	83.3
branch			n/a
condition			n/a
subroutine	4	4	100.0
pod			n/a
total	14	16	87.5

package Device::USB::TranceVibrator;

use strict;
use warnings;
use Carp;
use Device::USB;

our $VERSION = '0.01';

my @vibe_command = (
    0x41,   # bmRequestType
    0x00,   # bRequest
    0xFFFF, # value
    0x30F,  # index
    undef,  # bytes
    0,      # size
    1000,   # timeout
   );

my $Debug = undef;

sub _dprint(@) { ## no critic
    return unless $Debug;
    my @m = @_;
    chomp @m;
    print STDERR 'DEBUG: ', @m,"\n";
}

sub new {
    my($class, %args) = @_;
    my $self  = {};
    bless $self, $class;

    $Debug  = delete $args{debug};

    my $vendor    = $args{vendor}  || 0x0B49;
    my $product   = $args{product} || 0x064F;
    my $interface = 0; # interface number
    _dprint "vendor:$vendor product:$product";

    my $usb = Device::USB->new()                  or croak "D::USB new: $!";
    my $dev = $usb->find_device($vendor,$product) or croak "D::USB find: $!";
    $dev->open()                                  or croak "D::USB open $!";

    $dev->set_configuration(1)         >= 0       or croak "D::USB conf: $!";
    $dev->claim_interface($interface)  >= 0       or croak "D::USB claim: $!";
    $dev->set_altinterface($interface) >= 0       or croak "D::USB alt: $!";

    $self->{device} = $dev;
    return $self;
}

sub vibrate {
    my($self, %param) = @_;

    my $speed = delete $param{speed} || 128;
    if ($speed !~ /^\d+$/ || $speed > 255) {
        carp "speed parameter must be between 0 and 255, so force to be 129";
        $speed = 129;
    }
    _dprint "speed:$speed";

    my $speed_value  = $speed + $speed * 256;
    $vibe_command[2] = $speed_value;
    $vibe_command[3] = 0x0300 + ($speed_value & 0x0F);

    return $self->{device}->control_msg(@vibe_command);
}

sub stop {
    my($self) = @_;
    return $self->vibrate(speed => 1);
}

1;

__END__