module.exports = function(RED) { "use strict"; var exec = require('child_process').exec; var spawn = require('child_process').spawn; var fs = require('fs'); var gpioCommand = __dirname+'/nrgpio'; var allOK = true; try { var cpuinfo = fs.readFileSync("/proc/cpuinfo").toString(); if (cpuinfo.indexOf(": BCM") === -1) { allOK = false; RED.log.warn("rpi-gpio : "+RED._("rpi-gpio.errors.ignorenode")); } try { fs.statSync("/usr/share/doc/python-rpi.gpio"); // test on Raspbian // /usr/lib/python2.7/dist-packages/RPi/GPIO } catch(err) { try { fs.statSync("/usr/lib/python2.7/site-packages/RPi/GPIO"); // test on Arch } catch(err) { try { fs.statSync("/usr/lib/python2.7/dist-packages/RPi/GPIO"); // test on Hypriot } catch(err) { try { fs.statSync("/usr/local/lib/python2.7/dist-packages/RPi/GPIO"); // installed with pip } catch(err) { RED.log.warn("rpi-gpio : "+RED._("rpi-gpio.errors.libnotfound")); allOK = false; } } } } if ( !(1 & parseInt((fs.statSync(gpioCommand).mode & parseInt("777", 8)).toString(8)[0]) )) { RED.log.warn("rpi-gpio : "+RED._("rpi-gpio.errors.needtobeexecutable",{command:gpioCommand})); allOK = false; } } catch(err) { allOK = false; RED.log.warn("rpi-gpio : "+RED._("rpi-gpio.errors.ignorenode")); } // the magic to make python print stuff immediately process.env.PYTHONUNBUFFERED = 1; var pinsInUse = {}; var pinTypes = {"out":RED._("rpi-gpio.types.digout"), "tri":RED._("rpi-gpio.types.input"), "up":RED._("rpi-gpio.types.pullup"), "down":RED._("rpi-gpio.types.pulldown"), "pwm":RED._("rpi-gpio.types.pwmout")}; function GPIOInNode(n) { RED.nodes.createNode(this,n); this.buttonState = -1; this.pin = n.pin; this.intype = n.intype; this.read = n.read || false; this.debounce = Number(n.debounce || 25); if (this.read) { this.buttonState = -2; } var node = this; if (!pinsInUse.hasOwnProperty(this.pin)) { pinsInUse[this.pin] = this.intype; } else { if ((pinsInUse[this.pin] !== this.intype)||(pinsInUse[this.pin] === "pwm")) { node.warn(RED._("rpi-gpio.errors.alreadyset",{pin:this.pin,type:pinTypes[pinsInUse[this.pin]]})); } } if (allOK === true) { if (node.pin !== undefined) { node.child = spawn(gpioCommand, ["in",node.pin,node.intype,node.debounce]); node.running = true; node.status({fill:"green",shape:"dot",text:"common.status.ok"}); node.child.stdout.on('data', function (data) { var d = data.toString().trim().split("\n"); for (var i = 0; i < d.length; i++) { if (d[i] === '') { return; } if (node.running && node.buttonState !== -1 && !isNaN(Number(d[i])) && node.buttonState !== d[i]) { node.send({ topic:"pi/"+node.pin, payload:Number(d[i]) }); } node.buttonState = d[i]; node.status({fill:"green",shape:"dot",text:d[i]}); if (RED.settings.verbose) { node.log("out: "+d[i]+" :"); } } }); node.child.stderr.on('data', function (data) { if (RED.settings.verbose) { node.log("err: "+data+" :"); } }); node.child.on('close', function (code) { node.running = false; node.child = null; if (RED.settings.verbose) { node.log(RED._("rpi-gpio.status.closed")); } if (node.done) { node.status({fill:"grey",shape:"ring",text:"rpi-gpio.status.closed"}); node.done(); } else { node.status({fill:"red",shape:"ring",text:"rpi-gpio.status.stopped"}); } }); node.child.on('error', function (err) { if (err.errno === "ENOENT") { node.error(RED._("rpi-gpio.errors.commandnotfound")); } else if (err.errno === "EACCES") { node.error(RED._("rpi-gpio.errors.commandnotexecutable")); } else { node.error(RED._("rpi-gpio.errors.error",{error:err.errno})) } }); } else { node.warn(RED._("rpi-gpio.errors.invalidpin")+": "+node.pin); } } else { node.status({fill:"grey",shape:"dot",text:"node-red:rpi-gpio.status.not-available"}); if (node.read === true) { var val; if (node.intype == "up") { val = 1; } if (node.intype == "down") { val = 0; } setTimeout(function(){ node.send({ topic:"pi/"+node.pin, payload:val }); node.status({fill:"grey",shape:"dot",text:RED._("rpi-gpio.status.na",{value:val})}); },250); } } node.on("close", function(done) { node.status({fill:"grey",shape:"ring",text:"rpi-gpio.status.closed"}); delete pinsInUse[node.pin]; if (node.child != null) { node.done = done; node.child.stdin.write("close "+node.pin); node.child.kill('SIGKILL'); } else { done(); } }); } RED.nodes.registerType("rpi-gpio in",GPIOInNode); function GPIOOutNode(n) { RED.nodes.createNode(this,n); this.pin = n.pin; this.set = n.set || false; this.level = n.level || 0; this.freq = n.freq || 100; this.out = n.out || "out"; var node = this; if (!pinsInUse.hasOwnProperty(this.pin)) { pinsInUse[this.pin] = this.out; } else { if ((pinsInUse[this.pin] !== this.out)||(pinsInUse[this.pin] === "pwm")) { node.warn(RED._("rpi-gpio.errors.alreadyset",{pin:this.pin,type:pinTypes[pinsInUse[this.pin]]})); } } function inputlistener(msg) { if (msg.payload === "true") { msg.payload = true; } if (msg.payload === "false") { msg.payload = false; } var out = Number(msg.payload); var limit = 1; if (node.out === "pwm") { limit = 100; } if ((out >= 0) && (out <= limit)) { if (RED.settings.verbose) { node.log("out: "+out); } if (node.child !== null) { node.child.stdin.write(out+"\n"); node.status({fill:"green",shape:"dot",text:msg.payload.toString()}); } else { node.error(RED._("rpi-gpio.errors.pythoncommandnotfound"),msg); node.status({fill:"red",shape:"ring",text:"rpi-gpio.status.not-running"}); } } else { node.warn(RED._("rpi-gpio.errors.invalidinput")+": "+out); } } if (allOK === true) { if (node.pin !== undefined) { if (node.set && (node.out === "out")) { node.child = spawn(gpioCommand, [node.out,node.pin,node.level]); node.status({fill:"green",shape:"dot",text:node.level}); } else { node.child = spawn(gpioCommand, [node.out,node.pin,node.freq]); node.status({fill:"green",shape:"dot",text:"common.status.ok"}); } node.running = true; node.on("input", inputlistener); node.child.stdout.on('data', function (data) { if (RED.settings.verbose) { node.log("out: "+data+" :"); } }); node.child.stderr.on('data', function (data) { if (RED.settings.verbose) { node.log("err: "+data+" :"); } }); node.child.on('close', function (code) { node.child = null; node.running = false; if (RED.settings.verbose) { node.log(RED._("rpi-gpio.status.closed")); } if (node.done) { node.status({fill:"grey",shape:"ring",text:"rpi-gpio.status.closed"}); node.done(); } else { node.status({fill:"red",shape:"ring",text:"rpi-gpio.status.stopped"}); } }); node.child.on('error', function (err) { if (err.errno === "ENOENT") { node.error(RED._("rpi-gpio.errors.commandnotfound")); } else if (err.errno === "EACCES") { node.error(RED._("rpi-gpio.errors.commandnotexecutable")); } else { node.error(RED._("rpi-gpio.errors.error")+': ' + err.errno); } }); } else { node.warn(RED._("rpi-gpio.errors.invalidpin")+": "+node.pin); } } else { node.status({fill:"grey",shape:"dot",text:"node-red:rpi-gpio.status.not-available"}); node.on("input", function(msg){ node.status({fill:"grey",shape:"dot",text:RED._("rpi-gpio.status.na",{value:msg.payload.toString()})}); }); } node.on("close", function(done) { node.status({fill:"grey",shape:"ring",text:"rpi-gpio.status.closed"}); delete pinsInUse[node.pin]; if (node.child != null) { node.done = done; node.child.stdin.write("close "+node.pin); node.child.kill('SIGKILL'); } else { done(); } }); } RED.nodes.registerType("rpi-gpio out",GPIOOutNode); function PiMouseNode(n) { RED.nodes.createNode(this,n); this.butt = n.butt || 7; var node = this; if (allOK === true) { node.child = spawn(gpioCommand+".py", ["mouse",node.butt]); node.status({fill:"green",shape:"dot",text:"common.status.ok"}); node.child.stdout.on('data', function (data) { data = Number(data); if (data !== 0) { node.send({ topic:"pi/mouse", button:data, payload:1 }); } else { node.send({ topic:"pi/mouse", button:data, payload:0 }); } }); node.child.stderr.on('data', function (data) { if (RED.settings.verbose) { node.log("err: "+data+" :"); } }); node.child.on('close', function (code) { node.child = null; node.running = false; if (RED.settings.verbose) { node.log(RED._("rpi-gpio.status.closed")); } if (node.done) { node.status({fill:"grey",shape:"ring",text:"rpi-gpio.status.closed"}); node.done(); } else { node.status({fill:"red",shape:"ring",text:"rpi-gpio.status.stopped"}); } }); node.child.on('error', function (err) { if (err.errno === "ENOENT") { node.error(RED._("rpi-gpio.errors.commandnotfound")); } else if (err.errno === "EACCES") { node.error(RED._("rpi-gpio.errors.commandnotexecutable")); } else { node.error(RED._("rpi-gpio.errors.error")+': ' + err.errno); } }); node.on("close", function(done) { node.status({fill:"grey",shape:"ring",text:"rpi-gpio.status.closed"}); if (node.child != null) { node.done = done; node.child.kill('SIGINT'); node.child = null; } else { done(); } }); } else { node.status({fill:"grey",shape:"dot",text:"node-red:rpi-gpio.status.not-available"}); } } RED.nodes.registerType("rpi-mouse",PiMouseNode); function PiKeyboardNode(n) { RED.nodes.createNode(this,n); var node = this; if (allOK === true) { node.child = spawn(gpioCommand+".py", ["kbd","0"]); node.status({fill:"green",shape:"dot",text:"common.status.ok"}); node.child.stdout.on('data', function (data) { var b = data.toString().trim().split(","); var act = "up"; if (b[1] === "1") { act = "down"; } if (b[1] === "2") { act = "repeat"; } node.send({ topic:"pi/key", payload:Number(b[0]), action:act }); }); node.child.stderr.on('data', function (data) { if (RED.settings.verbose) { node.log("err: "+data+" :"); } }); node.child.on('close', function (code) { node.running = false; node.child = null; if (RED.settings.verbose) { node.log(RED._("rpi-gpio.status.closed")); } if (node.done) { node.status({fill:"grey",shape:"ring",text:"rpi-gpio.status.closed"}); node.done(); } else { node.status({fill:"red",shape:"ring",text:"rpi-gpio.status.stopped"}); } }); node.child.on('error', function (err) { if (err.errno === "ENOENT") { node.error(RED._("rpi-gpio.errors.commandnotfound")); } else if (err.errno === "EACCES") { node.error(RED._("rpi-gpio.errors.commandnotexecutable")); } else { node.error(RED._("rpi-gpio.errors.error")+': ' + err.errno); } }); node.on("close", function(done) { node.status({}); if (node.child != null) { node.done = done; node.child.kill('SIGINT'); node.child = null; } else { done(); } }); } else { node.status({fill:"grey",shape:"dot",text:"node-red:rpi-gpio.status.not-available"}); } } RED.nodes.registerType("rpi-keyboard",PiKeyboardNode); var pitype = { type:"" }; if (allOK === true) { exec(gpioCommand+" info", function(err,stdout,stderr) { if (err) { RED.log.info(RED._("rpi-gpio.errors.version")); } else { try { var info = JSON.parse( stdout.trim().replace(/\'/g,"\"") ); pitype.type = info["TYPE"]; } catch(e) { RED.log.info(RED._("rpi-gpio.errors.sawpitype"),stdout.trim()); } } }); } RED.httpAdmin.get('/rpi-gpio/:id', RED.auth.needsPermission('rpi-gpio.read'), function(req,res) { res.json(pitype); }); RED.httpAdmin.get('/rpi-pins/:id', RED.auth.needsPermission('rpi-gpio.read'), function(req,res) { res.json(pinsInUse); }); }