Created
March 11, 2014 17:33
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Espruino Garduino
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| var wlan, dht, interval, failTimeout; | |
| var debug = true; | |
| var pastValues = { | |
| temperature: [], | |
| air_humidity: [], | |
| soil_humidity: [], | |
| light: [], | |
| vref: [] | |
| }; | |
| function onInit() { | |
| dht = require("DHT11").connect(C0); | |
| setTimeout(function () { | |
| wlan = require("CC3000").connect(); | |
| if (interval !== undefined) | |
| clearInterval(interval); | |
| interval = setInterval(sendData, 20000); | |
| }, 500); | |
| } | |
| function sendData() { | |
| failTimeout = setTimeout(function () { | |
| console.log("Timed out, disconnecting..."); | |
| wlan.disconnect(); | |
| }, 30000); | |
| //if cc3000 dies it will the timeout around it, leaving the 60 sec timeout working | |
| setTimeout(function () { | |
| wlan.connect("xxx", "xxx", function (s) { | |
| if (s == "dhcp") { | |
| if (debug) | |
| console.log("Connected."); | |
| dht.read(function (a) { | |
| var current = { | |
| temperature: a.temp - 1, | |
| air_humidity: a.rh, | |
| soil_humidity: readSoilSync(), | |
| light: Math.round(analogRead(C3) * 100), | |
| vref: E.getAnalogVRef() | |
| }; | |
| if (debug) | |
| console.log(current); | |
| for (var prop in current) { | |
| var pastData = pastValues[prop]; | |
| var total = E.sum(pastData); | |
| var average = total / pastData.length; | |
| var tolerance = average / 100 * 20; //20% | |
| var upper = average + tolerance; | |
| var lower = average - tolerance; | |
| if (current[prop] > upper || current[prop] < lower) { | |
| if (debug) | |
| console.log(prop + " value set to average, was: " + current[prop]); | |
| //set to average if value is 20% higher or lower | |
| current[prop] = average; | |
| } | |
| pastData[pastData.length] = current[prop]; | |
| if (pastData.length > 10) { //store max 10 past values | |
| pastData = pastData.slice(1); | |
| } | |
| pastValues[prop] = pastData; | |
| } | |
| var data = [{ | |
| id: "air_humidity", | |
| current_value: current.air_humidity.toString() | |
| }, { | |
| id: "soil_humidity", | |
| current_value: current.soil_humidity.toString() | |
| }, { | |
| id: "temperature", | |
| current_value: current.temperature.toString() | |
| }, { | |
| id: "vref", | |
| current_value: current.vref | |
| }, { | |
| id: "light", | |
| current_value: current.light | |
| }]; | |
| putXively(data); | |
| }); | |
| } | |
| }); | |
| }, 10); | |
| } | |
| function putXively(data) { | |
| content = JSON.stringify({ | |
| version: "1.0.0", | |
| datastreams: data | |
| }); | |
| var options = { | |
| host: 'api.xively.com', | |
| port: '80', | |
| path: '/v2/feeds/1848857974', | |
| method: 'PUT', | |
| headers: { | |
| "X-ApiKey": "xxx", | |
| "Content-Length": content.length | |
| } | |
| }; | |
| var req = require("http").request(options, function (res) { | |
| res.on('data', function (data) { | |
| if (debug) | |
| console.log("-->" + data); | |
| }); | |
| res.on('close', function (data) { | |
| if (debug) | |
| console.log("==> Closed."); | |
| // finished, disconnect anyway | |
| setTimeout(function () { | |
| clearTimeout(failTimeout); | |
| if (debug) | |
| console.log("Complete, disconnecting..."); | |
| wlan.disconnect(); | |
| }, 1000); | |
| }); | |
| }); | |
| req.end(content); | |
| } | |
| //0.45 seems to be the absolute low value | |
| function readSoilSync() { | |
| var direction = (Math.random() > 0.5); | |
| var outPin, inPin; | |
| if (direction) { | |
| outPin = C1; | |
| inPin = C2; | |
| } else { | |
| outPin = C2; | |
| inPin = C1; | |
| } | |
| pinMode(outPin, 'output'); | |
| pinMode(inPin, 'input_pulldown'); | |
| digitalWrite(outPin, true); | |
| var total = 0; | |
| for (var i = 0; i < 20; i++) { | |
| total += analogRead(inPin); | |
| } | |
| var average = total / 20; | |
| //if (debug) | |
| // console.log("Humidity val: " + average); | |
| digitalWrite(outPin, false); | |
| return Math.round(average * 100); | |
| } |
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