66 lines
2.3 KiB
JavaScript
66 lines
2.3 KiB
JavaScript
/**
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* Copyright 2015 IBM Corp.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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**/
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module.exports = function(RED) {
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var m = require('mraa');
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//console.log("BOARD :",m.getPlatformName());
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function gpioDin(n) {
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RED.nodes.createNode(this,n);
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this.pin = n.pin;
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this.interrupt = n.interrupt;
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this.x = new m.Gpio(parseInt(this.pin));
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this.board = m.getPlatformName();
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var node = this;
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node.x.mode(m.PIN_GPIO);
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node.x.dir(m.DIR_IN);
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node.x.isr(m.EDGE_BOTH, function() {
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var g = node.x.read();
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var msg = { payload:g, topic:node.board+"/D"+node.pin };
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switch (g) {
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case 0:
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node.status({fill:"green",shape:"ring",text:"low"});
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if (node.interrupt=== "f" || node.interrupt === "b") {
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node.send(msg);
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}
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break;
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case 1:
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node.status({fill:"green",shape:"dot",text:"high"});
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if (node.interrupt=== "r" || node.interrupt === "b") {
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node.send(msg);
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}
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break;
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default:
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node.status({fill:"grey",shape:"ring",text:"unknown"});
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}
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});
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switch (node.x.read()) {
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case 0:
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node.status({fill:"green",shape:"ring",text:"low"});
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break;
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case 1:
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node.status({fill:"green",shape:"dot",text:"high"});
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break;
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default:
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node.status({});
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}
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this.on('close', function() {
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node.x.isr(m.EDGE_BOTH, null);
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});
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}
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RED.nodes.registerType("mraa-gpio-din", gpioDin);
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}
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