diff options
Diffstat (limited to 'dgbuilder/core_nodes/hardware/36-rpi-gpio.js')
| -rw-r--r-- | dgbuilder/core_nodes/hardware/36-rpi-gpio.js | 185 |
1 files changed, 0 insertions, 185 deletions
diff --git a/dgbuilder/core_nodes/hardware/36-rpi-gpio.js b/dgbuilder/core_nodes/hardware/36-rpi-gpio.js deleted file mode 100644 index 93cbc4e0..00000000 --- a/dgbuilder/core_nodes/hardware/36-rpi-gpio.js +++ /dev/null @@ -1,185 +0,0 @@ -/** - * Copyright 2013 IBM Corp. - * - * Licensed under the Apache License, Version 2.0 (the "License"); - * you may not use this file except in compliance with the License. - * You may obtain a copy of the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. - **/ - -module.exports = function(RED) { - "use strict"; - var util = require("util"); - var exec = require('child_process').exec; - var fs = require('fs'); - - var gpioCommand = '/usr/local/bin/gpio'; - - if (!fs.existsSync("/dev/ttyAMA0")) { // unlikely if not on a Pi - throw "Info : Ignoring Raspberry Pi specific node."; - } - - if (!fs.existsSync(gpioCommand)) { // gpio command not installed - throw "Info : Can't find Raspberry Pi wiringPi gpio command."; - } - - // Map physical P1 pins to Gordon's Wiring-Pi Pins (as they should be V1/V2 tolerant) - var pintable = { - // Physical : WiringPi - "11":"0", - "12":"1", - "13":"2", - "15":"3", - "16":"4", - "18":"5", - "22":"6", - "7":"7", - "3":"8", - "5":"9", - "24":"10", - "26":"11", - "19":"12", - "21":"13", - "23":"14", - "8":"15", - "10":"16", - "27":"30", - "28":"31", - "29":"21", - "31":"22", - "32":"26", - "33":"23", - "35":"24", - "36":"27", - "37":"25", - "38":"28", - "40":"29" - } - var tablepin = { - // WiringPi : Physical - "0":"11", - "1":"12", - "2":"13", - "3":"15", - "4":"16", - "5":"18", - "6":"22", - "7":"7", - "8":"3", - "9":"5", - "10":"24", - "11":"26", - "12":"19", - "13":"21", - "14":"23", - "15":"8", - "16":"10", - "30":"27", - "31":"28", - "21":"29", - "22":"31", - "26":"32", - "23":"33", - "24":"35", - "27":"36", - "25":"37", - "28":"38", - "29":"40" - } - - function GPIOInNode(n) { - RED.nodes.createNode(this,n); - this.buttonState = -1; - this.pin = pintable[n.pin]; - this.intype = n.intype; - var node = this; - - if (node.pin !== undefined) { - exec(gpioCommand+" mode "+node.pin+" "+node.intype, function(err,stdout,stderr) { - if (err) { node.error(err); } - else { - node._interval = setInterval( function() { - exec(gpioCommand+" read "+node.pin, function(err,stdout,stderr) { - if (err) { node.error(err); } - else { - if (node.buttonState !== Number(stdout)) { - var previousState = node.buttonState; - node.buttonState = Number(stdout); - if (previousState !== -1) { - var msg = {topic:"pi/"+tablepin[node.pin], payload:node.buttonState}; - node.send(msg); - } - } - } - }); - }, 250); - } - }); - } - else { - node.error("Invalid GPIO pin: "+node.pin); - } - - node.on("close", function() { - clearInterval(node._interval); - }); - } - - function GPIOOutNode(n) { - RED.nodes.createNode(this,n); - this.pin = pintable[n.pin]; - var node = this; - - if (node.pin !== undefined) { - process.nextTick(function() { - exec(gpioCommand+" mode "+node.pin+" out", function(err,stdout,stderr) { - if (err) { node.error(err); } - else { - node.on("input", function(msg) { - if (msg.payload === "true") { msg.payload = true; } - if (msg.payload === "false") { msg.payload = false; } - var out = Number(msg.payload); - if ((out === 0)|(out === 1)) { - exec(gpioCommand+" write "+node.pin+" "+out, function(err,stdout,stderr) { - if (err) { node.error(err); } - }); - } - else { node.warn("Invalid input - not 0 or 1"); } - }); - } - }); - }); - } - else { - node.error("Invalid GPIO pin: "+node.pin); - } - - node.on("close", function() { - exec(gpioCommand+" mode "+node.pin+" in"); - }); - } - - var pitype = { type:"" }; - exec(gpioCommand+" -v | grep Type", function(err,stdout,stderr) { - if (err) { - util.log('[36-rpi-gpio.js] Error: "'+gpioCommand+' -v" command failed for some reason.'); - } - else { - pitype = { type:(stdout.split(","))[0].split(": ")[1], rev:(stdout.split(","))[1].split(": ")[1] }; - } - }); - - RED.nodes.registerType("rpi-gpio in",GPIOInNode); - RED.nodes.registerType("rpi-gpio out",GPIOOutNode); - - RED.httpAdmin.get('/rpi-gpio/:id',function(req,res) { - res.send( JSON.stringify(pitype) ); - }); -} |