73 lines
2.8 KiB
JavaScript
73 lines
2.8 KiB
JavaScript
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module.exports = function(RED) {
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"use strict";
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var hids = require('hidstream');
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function MakeyNode(n) {
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RED.nodes.createNode(this,n);
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this.vid = 0x1b4f; // MakeyMakey vendor ID
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this.pid = 0x2b75; // MakeyMakey product ID
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var node = this;
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var path = null;
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var tout;
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var click = false;
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var keylookup = { "44":"space", "82":"up", "81":"down", "79":"right", "80":"left",
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"26":"w", "4":"a", "22":"s", "7":"d", "9":"f", "10":"g" };
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var findmakey = function() {
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node.log("looking for MakeyMakey");
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var devices = hids.getDevices();
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for (var dev = 0; dev < devices.length; dev++) {
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//node.log("Find:"+devices[dev].vendorId.toString(16)+":"+devices[dev].productId.toString(16));
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if ((devices[dev].vendorId == node.vid) && (devices[dev].productId == node.pid)) {
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path = devices[dev].path;
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node.log("found MakeyMakey at: "+path); //path = "0003:0004:00";
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break; // stop on first match
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}
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}
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if (path === null) {
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tout = setTimeout( function () {
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findmakey();
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},15000);
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}
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}
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findmakey();
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if (path != null) {
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try {
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node.makey = new hids.device(path);
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node.makey.on("data", function(key) {
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var msg = {payload:[]};
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//console.log(key);
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if (key.modKeys[0] === "shift") {
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for (var keys = 0; keys < key.keyCodes.length; keys++) {
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node.log(key.keyCodes[keys]+" : "+keylookup[key.keyCodes[keys].toString()]);
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msg.payload.push(keylookup[key.keyCodes[keys].toString()]);
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}
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msg.payload = msg.payload.join();
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node.send(msg);
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}
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else if (key.modKeys[0] === "ctrl") {
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if (key.charCodes.length === 0) {
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click = !click;
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msg.payload = (click) ? "click" : "clock";
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node.send(msg);
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}
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}
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else { console.log(key); }
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});
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}
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catch(err) { node.warn("can't open MakeyMakey: Do you need root access ?"); }
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}
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else {
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findmakey();
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}
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this.on("close", function() {
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if (tout) { clearTimeout(tout); }
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if (node.makey) { node.makey.device.close(); }
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});
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}
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RED.nodes.registerType("makeymakey",MakeyNode);
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}
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