Allwinner A20 GPIO Interruption

sinovoip · March 12, 2018, 2:28am

http://developer.ridgerun.com/wiki/index.php?title=Gpio-int-test.c

PacktPublishing/GNU-Linux-Rapid-Embedded-Programming/blob/master/Chapter06/gpio-poll.php

#!/usr/bin/php
<?php
        define("gpio24", "/sys/class/gpio/gpio24/value");
        define("gpio91", "/sys/class/gpio/gpio91/value");

	# Get the GPIOs streams
	$stream24 = fopen(gpio24, 'r');
	$stream91 = fopen(gpio91, 'r');

	while (true) {
		# Set up stream sets for the select()
		$read = NULL;
		$write = NULL;
		$exept = array($stream24, $stream91);

		# Wait for IRQs (without timeout)...
		$ret = stream_select($read, $write, $exept, NULL);
		if ($ret < 0)
			die("stream_select: error");

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