388 lines
16 KiB
JavaScript
388 lines
16 KiB
JavaScript
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module.exports = function(RED) {
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"use strict";
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var execSync = require('child_process').execSync;
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var exec = require('child_process').exec;
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var spawn = require('child_process').spawn;
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var testCommand = __dirname+'/testgpio'
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var gpioCommand = __dirname+'/nrgpio';
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var allOK = true;
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try {
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execSync(testCommand);
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} catch(err) {
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allOK = false;
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RED.log.warn("rpi-gpio : "+RED._("rpi-gpio.errors.ignorenode"));
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}
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// the magic to make python print stuff immediately
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process.env.PYTHONUNBUFFERED = 1;
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var pinsInUse = {};
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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")};
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var pin2bcm = { '3':'2', '5':'3', '7':'4', '8':'14', '10':'15', '11':'17', '12':'18', '13':'27',
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'15':'22', '16':'23', '18':'24', '19':'10', '21':'9', '22':'25', '23':'11', '24':'8', '26':'7',
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'29':'5', '31':'6', '32':'12', '33':'13', '35':'19', '36':'16', '37':'26', '38':'20', '40':'21'
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}
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function GPIOInNode(n) {
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RED.nodes.createNode(this,n);
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this.buttonState = -1;
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this.pin = (n.bcm === true) ? n.pin : pin2bcm[n.pin];
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this.intype = n.intype;
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this.read = n.read || false;
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this.debounce = Number(n.debounce || 25);
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if (this.read) { this.buttonState = -2; }
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var node = this;
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if (!pinsInUse.hasOwnProperty(this.pin)) {
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pinsInUse[this.pin] = this.intype;
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}
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else {
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if ((pinsInUse[this.pin] !== this.intype)||(pinsInUse[this.pin] === "pwm")) {
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node.warn(RED._("rpi-gpio.errors.alreadyset",{pin:this.pin,type:pinTypes[pinsInUse[this.pin]]}));
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}
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}
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var startPin = function() {
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node.child = spawn(gpioCommand, ["in",node.pin,node.intype,node.debounce]);
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node.running = true;
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node.status({fill:"yellow",shape:"dot",text:"rpi-gpio.status.ok"});
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node.child.stdout.on('data', function (data) {
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var d = data.toString().trim().split("\n");
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for (var i = 0; i < d.length; i++) {
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if (d[i] === '') { return; }
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if (node.running && node.buttonState !== -1 && !isNaN(Number(d[i])) && node.buttonState !== d[i]) {
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node.send({ topic:"gpio/"+node.pin, payload:Number(d[i]) });
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}
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node.buttonState = d[i];
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node.status({fill:"green",shape:"dot",text:d[i]});
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if (RED.settings.verbose) { node.log("out: "+d[i]+" :"); }
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}
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});
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node.child.stderr.on('data', function (data) {
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if (RED.settings.verbose) { node.log("err: "+data+" :"); }
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});
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node.child.on('close', function (code) {
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node.running = false;
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node.child.removeAllListeners();
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delete node.child;
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if (RED.settings.verbose) { node.log(RED._("rpi-gpio.status.closed")); }
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if (!node.finished && code === 1) {
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setTimeout(function() {startPin()}, 250);
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}
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else if (node.finished) {
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node.status({fill:"grey",shape:"ring",text:"rpi-gpio.status.closed"});
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node.finished();
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}
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else { node.status({fill:"red",shape:"ring",text:"rpi-gpio.status.stopped"}); }
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});
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node.child.on('error', function (err) {
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if (err.code === "ENOENT") { node.error(RED._("rpi-gpio.errors.commandnotfound")+err.path,err); }
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else if (err.code === "EACCES") { node.error(RED._("rpi-gpio.errors.commandnotexecutable")+err.path,err); }
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else { node.error(RED._("rpi-gpio.errors.error",{error:err.code}),err) }
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});
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node.child.stdin.on('error', function (err) {
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if (!node.finished) {
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node.error(RED._("rpi-gpio.errors.error",{error:err.code}),err);
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}
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});
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}
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if (allOK === true) {
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if (node.pin !== undefined) {
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startPin();
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}
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else {
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node.warn(RED._("rpi-gpio.errors.invalidpin")+": "+node.pin);
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}
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}
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else {
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node.status({fill:"grey",shape:"dot",text:"rpi-gpio.status.not-available"});
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if (node.read === true) {
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var val;
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if (node.intype == "up") { val = 1; }
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if (node.intype == "down") { val = 0; }
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setTimeout(function() {
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node.send({ topic:"gpio/"+node.pin, payload:val });
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node.status({fill:"grey",shape:"dot",text:RED._("rpi-gpio.status.na",{value:val})});
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},250);
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}
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}
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node.on("close", function(done) {
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node.status({fill:"grey",shape:"ring",text:"rpi-gpio.status.closed"});
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delete pinsInUse[node.pin];
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if (node.child != null) {
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node.finished = done;
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node.child.stdin.write("close "+node.pin, () => {
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if (node.child) {
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node.child.kill('SIGKILL');
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}
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});
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}
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else { if (done) { done(); } }
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});
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}
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RED.nodes.registerType("rpi-gpio in",GPIOInNode);
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function GPIOOutNode(n) {
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RED.nodes.createNode(this,n);
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this.pin = (n.bcm === true) ? n.pin : pin2bcm[n.pin];
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this.set = n.set || false;
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this.level = n.level || 0;
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this.freq = n.freq || 100;
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this.out = n.out || "out";
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var node = this;
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if (!pinsInUse.hasOwnProperty(this.pin)) {
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pinsInUse[this.pin] = this.out;
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}
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else {
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if ((pinsInUse[this.pin] !== this.out)||(pinsInUse[this.pin] === "pwm")) {
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node.warn(RED._("rpi-gpio.errors.alreadyset",{pin:this.pin,type:pinTypes[pinsInUse[this.pin]]}));
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}
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}
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function inputlistener(msg, send, done) {
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if (msg.payload === "true") { msg.payload = true; }
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if (msg.payload === "false") { msg.payload = false; }
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var out = Number(msg.payload);
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var limit = 1;
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if (node.out === "pwm") { limit = 100; }
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if ((out >= 0) && (out <= limit)) {
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if (RED.settings.verbose) { node.log("out: "+out); }
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if (node.child !== null) {
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node.child.stdin.write(out+"\n", () => {
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if (done) { done(); }
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});
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node.status({fill:"green",shape:"dot",text:msg.payload.toString()});
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}
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else {
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node.error(RED._("rpi-gpio.errors.pythoncommandnotfound"),msg);
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node.status({fill:"red",shape:"ring",text:"rpi-gpio.status.not-running"});
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}
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}
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else { node.warn(RED._("rpi-gpio.errors.invalidinput")+": "+out); }
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}
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if (allOK === true) {
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if (node.pin !== undefined) {
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if (node.set && (node.out === "out")) {
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node.child = spawn(gpioCommand, [node.out,node.pin,node.level]);
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node.status({fill:"green",shape:"dot",text:node.level});
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} else {
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node.child = spawn(gpioCommand, [node.out,node.pin,node.freq]);
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node.status({fill:"yellow",shape:"dot",text:"rpi-gpio.status.ok"});
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}
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node.running = true;
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node.on("input", inputlistener);
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node.child.stdout.on('data', function (data) {
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if (RED.settings.verbose) { node.log("out: "+data+" :"); }
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});
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node.child.stderr.on('data', function (data) {
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if (RED.settings.verbose) { node.log("err: "+data+" :"); }
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});
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node.child.on('close', function (code) {
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node.child = null;
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node.running = false;
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if (RED.settings.verbose) { node.log(RED._("rpi-gpio.status.closed")); }
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if (node.finished) {
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node.status({fill:"grey",shape:"ring",text:"rpi-gpio.status.closed"});
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node.finished();
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}
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else { node.status({fill:"red",shape:"ring",text:"rpi-gpio.status.stopped"}); }
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});
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node.child.on('error', function (err) {
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if (err.code === "ENOENT") { node.error(RED._("rpi-gpio.errors.commandnotfound")+err.path,err); }
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else if (err.code === "EACCES") { node.error(RED._("rpi-gpio.errors.commandnotexecutable")+err.path,err); }
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else { node.error(RED._("rpi-gpio.errors.error",{error:err.code}),err) }
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});
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node.child.stdin.on('error', function (err) {
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if (!node.finished) {
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node.error(RED._("rpi-gpio.errors.error",{error:err.code}),err);
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}
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});
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}
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else {
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node.warn(RED._("rpi-gpio.errors.invalidpin")+": "+node.pin);
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}
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}
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else {
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node.status({fill:"grey",shape:"dot",text:"rpi-gpio.status.not-available"});
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node.on("input", function(msg) {
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node.status({fill:"grey",shape:"dot",text:RED._("rpi-gpio.status.na",{value:msg.payload.toString()})});
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});
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}
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node.on("close", function(done) {
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node.status({fill:"grey",shape:"ring",text:"rpi-gpio.status.closed"});
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delete pinsInUse[node.pin];
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if (node.child != null) {
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node.finished = done;
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node.child.stdin.write("close "+node.pin, () => {
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node.child.kill('SIGKILL');
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setTimeout(function() { if (done) { done(); } }, 50);
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});
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}
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else { if (done) { done(); } }
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});
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}
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RED.nodes.registerType("rpi-gpio out",GPIOOutNode);
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function PiMouseNode(n) {
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RED.nodes.createNode(this,n);
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this.butt = n.butt || 7;
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var node = this;
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if (allOK === true) {
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node.child = spawn(gpioCommand, ["mouse",node.butt]);
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node.status({fill:"green",shape:"dot",text:"rpi-gpio.status.ok"});
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node.child.stdout.on('data', function (data) {
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data = Number(data);
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if (data !== 0) { node.send({ topic:"pi/mouse", button:data, payload:1 }); }
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else { node.send({ topic:"pi/mouse", button:data, payload:0 }); }
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});
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node.child.stderr.on('data', function (data) {
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if (RED.settings.verbose) { node.log("err: "+data+" :"); }
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});
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node.child.on('close', function (code) {
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node.child = null;
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node.running = false;
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if (RED.settings.verbose) { node.log(RED._("rpi-gpio.status.closed")); }
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if (node.finished) {
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node.status({fill:"grey",shape:"ring",text:"rpi-gpio.status.closed"});
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node.finished();
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}
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else { node.status({fill:"red",shape:"ring",text:"rpi-gpio.status.stopped"}); }
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});
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node.child.on('error', function (err) {
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if (err.errno === "ENOENT") { node.error(RED._("rpi-gpio.errors.commandnotfound")); }
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else if (err.errno === "EACCES") { node.error(RED._("rpi-gpio.errors.commandnotexecutable")); }
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else { node.error(RED._("rpi-gpio.errors.error")+': ' + err.errno); }
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});
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node.on("close", function(done) {
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node.status({fill:"grey",shape:"ring",text:"rpi-gpio.status.closed"});
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if (node.child != null) {
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node.finished = done;
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node.child.kill('SIGINT');
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node.child = null;
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}
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else { done(); }
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});
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}
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else {
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node.status({fill:"grey",shape:"dot",text:"rpi-gpio.status.not-available"});
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}
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}
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RED.nodes.registerType("rpi-mouse",PiMouseNode);
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function PiKeyboardNode(n) {
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RED.nodes.createNode(this,n);
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var node = this;
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var doConnect = function() {
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node.child = spawn(gpioCommand, ["kbd","0"]);
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node.status({fill:"green",shape:"dot",text:"rpi-gpio.status.ok"});
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node.child.stdout.on('data', function (data) {
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var d = data.toString().trim().split("\n");
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for (var i = 0; i < d.length; i++) {
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if (d[i] !== '') {
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var b = d[i].trim().split(",");
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var act = "up";
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if (b[1] === "1") { act = "down"; }
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if (b[1] === "2") { act = "repeat"; }
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node.send({ topic:"pi/key", payload:Number(b[0]), action:act });
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}
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}
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});
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node.child.stderr.on('data', function (data) {
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if (RED.settings.verbose) { node.log("err: "+data+" :"); }
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});
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node.child.on('close', function (code) {
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node.running = false;
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node.child = null;
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if (RED.settings.verbose) { node.log(RED._("rpi-gpio.status.closed")); }
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if (node.finished) {
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node.status({fill:"grey",shape:"ring",text:"rpi-gpio.status.closed"});
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node.finished();
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}
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else {
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node.status({fill:"red",shape:"ring",text:"rpi-gpio.status.stopped"});
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setTimeout(function() { doConnect(); },2000)
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}
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});
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node.child.on('error', function (err) {
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if (err.errno === "ENOENT") { node.error(RED._("rpi-gpio.errors.commandnotfound")); }
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else if (err.errno === "EACCES") { node.error(RED._("rpi-gpio.errors.commandnotexecutable")); }
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else { node.error(RED._("rpi-gpio.errors.error")+': ' + err.errno); }
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});
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}
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if (allOK === true) {
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doConnect();
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node.on("close", function(done) {
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node.status({});
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if (node.child != null) {
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node.finished = done;
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node.child.kill('SIGINT');
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node.child = null;
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}
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else { done(); }
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});
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}
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else {
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node.status({fill:"grey",shape:"dot",text:"rpi-gpio.status.not-available"});
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}
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}
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RED.nodes.registerType("rpi-keyboard",PiKeyboardNode);
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var pitype = { type:"" };
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if (allOK === true) {
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exec(gpioCommand+" info", function(err,stdout,stderr) {
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if (err) {
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RED.log.info(RED._("rpi-gpio.errors.version"));
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}
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else {
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try {
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var info = JSON.parse( stdout.trim().replace(/\'/g,"\"") );
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pitype.type = info["TYPE"];
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}
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catch(e) {
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RED.log.info(RED._("rpi-gpio.errors.sawpitype"),stdout.trim());
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}
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}
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});
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}
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RED.httpAdmin.get('/rpi-gpio/:id', RED.auth.needsPermission('rpi-gpio.read'), function(req,res) {
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res.json(pitype);
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});
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RED.httpAdmin.get('/rpi-pins/:id', RED.auth.needsPermission('rpi-gpio.read'), function(req,res) {
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res.json(pinsInUse);
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});
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}
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