mirror of https://github.com/node-red/node-red.git
52 lines
1.3 KiB
JavaScript
52 lines
1.3 KiB
JavaScript
/**
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* Copyright 2013 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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var RED = require("../../red/red");
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var gpio = require("pi-gpio");
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function GPIOOutNode(n) {
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RED.nodes.createNode(this,n);
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this.pin = n.pin;
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var node = this;
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if (this.pin) {
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gpio.open(this.pin,"output",function(err) {
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if (err) {
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node.error(err);
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} else {
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node.on("input",function(msg) {
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gpio.write(node.pin,msg.payload,function(err) {
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if (err) node.error(err);
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});
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});
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}
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});
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} else {
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this.error("Invalid GPIO pin: "+this.pin);
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}
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}
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RED.nodes.registerType("rpi-gpio out",GPIOOutNode);
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GPIOOutNode.prototype.close = function() {
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gpio.close(this.pin);
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}
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