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  PUBLIC "-//OASIS//DTD DITA Concept//EN" "concept.dtd">

<concept id="GUID-3D1A6C0B-A3E1-4E3C-80F1-C3C5CD1E3734" xml:lang="en"><title>GPIO

Implementation</title><shortdesc>Explains the code you must write to allow users of the GPIO SHAI

to access your hardware.</shortdesc><prolog><metadata><keywords/></metadata></prolog><conbody>

<p>This section is provided to assist platform developers using the GPIO standard

for communicating with a particular hardware component. It tells you what

you need to know to produce the hardware specific implementation of the GPIO

SHAI.</p>

<p>You provide support for GPIO hardware by providing an implementation of

the <xref href="GUID-C93C53D3-2BE8-36AE-83B8-4CDB4195649B.dita"><apiname>GPIO</apiname></xref> class which defines methods for pin mode, pin

bias, debouncing, interrupts, getting and setting pin values and all other

GPIO functionality that must be coded below the SHAI interface. </p>

</conbody></concept>