use v6;
class RPi::Device::PiFace {
  use NativeCall;

  # Setup Functions
  our sub setup-piface(int32) returns int32 is native('wiringPiDev')
                                            is symbol('piFaceSetup') { * };




head

RPi::Device::PiFace - Perl6 module to drive the PiFace 2 GPIO expansion board for
the Raspberry Pi 2.


RPi::Device::PiFace controls the PiFace 2 expansion board for the Raspberry Pi 2
which adds 2 banks of 8 GPIO ports (a total of 16 extra I/O pins/ports).
The RPi 2 uses its SPI interface pins to control the PiFace 2.


This module uses Perl6's NativeCall module to interface the WiringPi C library
and the MCP23S17.c SPI driver from wiringpi.org.


# Setup the PiFace board
# In effect, overlays RPi methods with equivalent methods from WiringPi's PiFace
# C library
my $res = RPi::Device::PiFace::setup-piface(200);


sub blink($pin,$delay) {
  RPi::Wiring::digital-write($pin, 1);# On
  RPi::Wiring::delay($delay);# mS
  RPi::Wiring::digital-write($pin, 0);# Off
  RPi::Wiring::delay($delay);
}


Gary Ashton-Jones <gary@ashton-jones.com.au>


This library is free software; you can redistribute it and/or modify it under
the Artistic License 2.0.


root

README

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PiFace

NAME

SYNOPSIS

DESCRIPTION

USAGE

AUTHOR

COPYRIGHT AND LICENSE