48 lines
842 B
JavaScript
48 lines
842 B
JavaScript
"use strict";
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const assert = require('assert');
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const Gpio = require('../onoff').Gpio;
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const input = new Gpio(7, 'in', 'both');
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const output = new Gpio(8, 'out');
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let toggleCount = 0;
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let falling = 0;
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let rising = 0;
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function toggleOutput() {
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output.writeSync(output.readSync() ^ 1);
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toggleCount += 1;
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}
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function interrupt(err, value) {
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if (err) {
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throw err;
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}
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if (value === 1) {
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rising += 1;
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} else if (value === 0) {
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falling += 1;
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}
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assert(output.readSync() === value);
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if (rising + falling < 2000) {
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toggleOutput();
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} else {
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assert(toggleCount === 2000);
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assert(rising === falling);
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assert(rising + falling === toggleCount);
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input.unexport();
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output.writeSync(0);
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output.unexport();
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console.log('ok - ' + __filename);
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}
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}
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input.watch(interrupt);
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toggleOutput();
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