114 lines
3.4 KiB
PHP
114 lines
3.4 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\GpioMapper;
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use NoccyLabs\Gpio\GpioMapperInterface;
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class WiringPiMapper implements GpioMapperInterface
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{
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protected $version;
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public function __construct($version=1)
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{
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$this->version = (int)$version;
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}
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/** {@inheritdoc} */
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public function mapGpioToLogicalPin($gpio)
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{
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switch ($gpio) {
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case 17: return 0;
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case 18: return 1;
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case 22: return 3;
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case 23: return 4;
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case 24: return 5;
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case 25: return 6;
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case 11: return 7;
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case 8: return 10;
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case 7: return 11;
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case 10: return 12;
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case 9: return 13;
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case 11: return 14;
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case 14: return 15;
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case 15: return 16;
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case 28: return 17;
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case 29: return 18;
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case 30: return 19;
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case 31: return 20;
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}
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if ($this->version == 2) {
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switch ($gpio) {
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case 27: return 2;
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case 2: return 8;
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case 3: return 9;
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}
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} elseif ($this->version == 1) {
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switch ($gpio) {
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case 21: return 2;
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case 9: return 8;
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case 1: return 9;
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}
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}
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throw new GpioException("Unable to map GPIO{$gpio} to logical pin");
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}
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/** {@inheritdoc} */
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public function mapLogicalToGpioPin($logical)
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{
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switch ($logical) {
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case 0: return 17;
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case 1: return 18;
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case 2:
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if ($this->version == 2) {
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return 27;
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}
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return 21;
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case 3: return 22;
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case 4: return 23;
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case 5: return 24;
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case 6: return 25;
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case 7: return 11;
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case 8:
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if ($this->version == 2) {
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return 2;
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}
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return 0;
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case 9:
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if ($this->version == 2) {
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return 3;
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}
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return 1;
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case 10: return 8;
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case 11: return 7;
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case 12: return 10;
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case 13: return 9;
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case 14: return 11;
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case 15: return 14;
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case 16: return 15;
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case 17: return 28;
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case 18: return 29;
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case 19: return 30;
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case 20: return 31;
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}
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throw new GpioException("Unable to map logicak {$logical} to GPIO pin");
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}
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}
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