60 lines
1.6 KiB
PHP
60 lines
1.6 KiB
PHP
<?php
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require_once __DIR__."/../vendor/autoload.php";
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/*
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* This example demonstrates using a 4-button wireless remote control with the
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* GPIO, in this case with the pins mapped against WiringPi for a Rev2 board.
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* If you are using this code with any other hardware, please update the mapper
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* below.
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*
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* It is assumed that Pin 0 is the interrupt pin (VT) to signal when a button
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* press has been received, and Pin 1-4 are connected to the pins for button
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* A to D on the remote control.
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*
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* Note that the Raspberry Pi GPIO is not 5V tolerant, so use an optoisolator
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* or transistors to ensure that you don't zap your preciouos hardware.
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*
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*/
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use NoccyLabs\Gpio\Gpio;
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use NoccyLabs\Gpio\GpioMapper\WiringPiMapper;
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try {
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$gpio = new Gpio(true);
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} catch (Gpio\Exception $e) {
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error_log("Error: {$e}");
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}
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// The mapper translates GPIO to logical pins and vice versa
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$gpio->setMapper( new WiringPiMapper(2) );
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// Access logical pin 0, since we got a mapper assigned. Otherwise this would
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// be the actual GPIO0 pin.
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$led = $gpio[0]
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->export()
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->setDirection("input")
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->setEdge("rising")
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->setHandler(function($e) use($gpio) {
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if ($gpio[1]->getValue()) { echo "A"; }
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elseif ($gpio[2]->getValue()) { echo "B"; }
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elseif ($gpio[3]->getValue()) { echo "C"; }
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elseif ($gpio[4]->getValue()) { echo "D"; }
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else { echo "None"; }
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echo "\n";
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})
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->setLabel("rfint")
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->dumpStatus(true);
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for($n = 1; $n < 5; $n++) {
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$gpio[$n]
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->setDirection("input")
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->setLabel("rfbt{$n}")
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->dumpStatus(true);
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}
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while(true) {
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$gpio->refresh();
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usleep(10000);
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}
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