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HiPi::Device::GPIO::Pin

HiPi::Device::GPIO::Pin provides an implementation of HiPi::Pin for the HiPi::Device::GPIO module.

The module inherits most of its methods from HiPi::Pin.

See Also

Example Usage

use 5.14.0; # for say
use HiPi::Device::GPIO;
use HiPi::Constant qw( :raspberry );

my $dev = HiPi::Device::GPIO->new();
$dev->export_pin( RPI_PAD1_PIN_11 );
.....
my $pin  = $dev->get_pin( RPI_PAD1_PIN_11 );
my $mode = $pin->mode();

if( $mode & RPI_PINMODE_OUTP ) {
    # set high
    $pin->value(1);
} elsif(  $mode & RPI_PINMODE_INPT ) { 
    say q(Current Pin Value is :) . $pin->value();

    # set rising edge interrupt
    $pin->interrupt( RPI_INT_RISE );
}

# As a convenience, the HiPi::Device::GPIO method export_pin also
# returns a HiPi::Device::GPIO::Pin object;

my $dev = HiPi::Device::GPIO->new();
my $pin = $dev->export_pin( RPI_PAD1_PIN_11 );

Custom Methods

As the kernel device driver for the GPIO allows you to reverse the high / low logic for a pin, the module provides a method to control that.
$pin->active_low( [ $onoff ] );
    Returns the current active low setting for the pin.
    Either 1 or 0 for on or off.
    
    If the optional param $onoff is supplied ( 1 or 0 )
    that setting is applied to the pin.




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HiPi Modules Copyright © 2013 Mark Dootson