64 lines
1.6 KiB
PHP
64 lines
1.6 KiB
PHP
<?php
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/*
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* Copyright (C) 2014, NoccyLabs
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>
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*/
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namespace NoccyLabs\Gpio\Util;
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use NoccyLabs\Gpio\GpioPin;
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class BitmappedGpio
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{
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protected $gpio = array();
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public function __construct()
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{
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$this->gpio = array_fill(0,7,null);
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}
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public function setGpioPin($bit, GpioPin $gpiopin = null)
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{
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if (($bit >= 0) && ($bit <= 7)) {
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$this->gpio[$bit] = $gpiopin;
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} else {
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throw new \Exception("bit must be 0-7");
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}
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}
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public function read()
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{
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$r = 0;
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foreach($this->gpio as $bit=>$gpio) {
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if ($gpio->getValue()) { $r |= 1<<$bit; }
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}
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return $r;
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}
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public function write($byte)
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{
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$r = 0;
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foreach($this->gpio as $bit=>$gpio) {
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if ($gpio) {
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$gpio->setValue((bool)($byte & (1<<$bit)));
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}
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}
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return $this;
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}
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}
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