/ 
Device-WebIO-0.022
River stage one • 6 direct dependents • 6 total dependents
/ Device::WebIO::Device::DigitalInputAnyEvent

NAME

Device::WebIO::Device::DigitalInputAnyEvent - Role for event-based digital input

DESCRIPTION

Role for doing event-based input. This does the Device::WebIO::Device::DigitalInput role, as well.

Requires set_anyevent_condvar(). This method takes a pin number to set the interrupt on, and a condvar that will be called.

Provides an input_condvar attribute. This should be set with an AnyEvent::Condvar, and should be triggered any time an input pin changes. The condvar should be set with a callback that takes a pin number and the current setting of that pin.

Example user code:

# Setup condvar
my $condvar = AnyEvent->condvar;
$condvar->cb( sub {
    my ($cv) = @_;
    my ($pin, $setting) = $cv->recv;
    say "Pin number $pin set to $setting";
});

# Setup device
my $dev = Device::WebIO::AnyEventExample->new({});
$dev->set_anyevent_condvar( 3, $condvar );

# Set AnyEvent loop going
my $cv = AE::cv
$cv->recv;

LICENSE

Copyright (c) 2018 Timm Murray All rights reserved.

Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:

* Redistributions of source code must retain the above copyright notice, this list of 
  conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above copyright notice, this list of
  conditions and the following disclaimer in the documentation and/or other materials 
  provided with the distribution.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.