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#########################################################################################
# Package HiPi::Device
# Description : Base class for /dev devices
# Copyright : Copyright (c) 2013-2017 Mark Dootson
# License : This is free software; you can redistribute it and/or modify it under
# the same terms as the Perl 5 programming language system itself.
#########################################################################################
package HiPi::Device;
#########################################################################################
use strict;
use warnings;
use parent qw( HiPi::Class );
use HiPi qw( :rpi );
use Time::HiRes qw( usleep );
use Carp;
__PACKAGE__->create_accessors( qw( devicename ) );
our $VERSION ='0.81';
sub new {
my ($class, %params) = @_;
my $self = $class->SUPER::new(%params);
return $self;
}
sub delay {
my($class, $millis) = @_;
usleep( int($millis * 1000));
}
sub delayMicroseconds {
my($class, $micros) = @_;
usleep( int($micros) );
}
*HiPi::Device::sleep_milliseconds = \&delay;
*HiPi::Device::sleep_microseconds = \&delayMicroseconds;
sub modules_are_loaded {
my $class = shift;
my $modulesloaded = 0;
my $moduleoptions = $class->get_required_module_options();
my @lsmod= qx(lsmod);
if( $?) {
carp q(unable to determine if modules are loaded for HiPi::Device);
} else {
my %modules = map { (split(/\s+/, $_))[0..1] } @lsmod;
for my $optionlist ( @$moduleoptions ) {
my $thislistgood = 1;
for my $module ( @$optionlist ) {
unless( exists($modules{$module}) ) {
$thislistgood = 0;
last;
}
}
if( $thislistgood) {
# we found an option where required
# modules are loaded so we are good
$modulesloaded = 1;
}
}
}
return $modulesloaded;
}
sub get_required_module_options {
return [ [ qw( override in derived class with module list ) ] ];
}
sub close { 1; }
sub DESTROY {
my $self = shift;
$self->SUPER::DESTROY;
$self->close;
}
1;
__END__
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