147 lines
3.0 KiB
C++
147 lines
3.0 KiB
C++
/*
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* Send temperature via HTTP GET requests to $host service.
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* Measure temperature with interval given bye the server.
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* Version 1.1.0
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*/
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#include <ESP8266WiFi.h>
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#include <OneWire.h>
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#include <DallasTemperature.h>
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//----------------------------------------------------
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const char* ssid = "TNCAP3F2E03";
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const char* password = "73ABCCAA87";
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const char* host = "datahouse.kingpenguin.tk";
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const int httpPort = 80;
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const int DEFAULT_INTERVAL = 3600;
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//----------------------------------------------------
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String MAC = "";
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// broche data du DS18B20
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#define ONE_WIRE_BUS 2
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OneWire oneWire(ONE_WIRE_BUS);
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DallasTemperature DS18B20(&oneWire);
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// Wait for x second.
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void sleepSec(int sec) {
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for (int i=0; i<1000; i++) {
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delay(sec);
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}
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}
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// Get the MAC address of the device.
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String getMacAddress() {
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String macReturn = "";
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unsigned char mac[6];
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if(WiFi.macAddress(mac) != 0) {
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for(int i=0; i<6; i++) {
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if(mac[i]<16) {
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macReturn = "0";
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}
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macReturn += String(mac[i], HEX);
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macReturn += (i < 5) ? ":" : "";
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}
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}
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return macReturn;
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}
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// Get the temperature.
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float getTemp() {
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float t;
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do {
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DS18B20.requestTemperatures();
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t = DS18B20.getTempCByIndex(0);
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} while (t == 85.0 || t == (-127.0));
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return t;
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}
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void setup() {
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Serial.begin(115200);
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delay(10);
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// WiFi.macAddress(mac);
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MAC = getMacAddress();
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Serial.print("MAC address: ");
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Serial.println(MAC);
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// We start by connecting to a WiFi network
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Serial.println();
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Serial.println();
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Serial.print("Connecting to ");
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Serial.println(ssid);
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WiFi.begin(ssid, password);
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while (WiFi.status() != WL_CONNECTED) {
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delay(500);
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Serial.print(".");
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}
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Serial.println("");
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Serial.println("WiFi connected");
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Serial.println("IP address: ");
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Serial.println(WiFi.localIP());
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}
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float temp;
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int nextInterval;
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void loop() {
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// On mesure la température
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temp = getTemp();
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temp += 0.5;
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int temperature = (int) temp;
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// Use WiFiClient class to create TCP connections
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WiFiClient client;
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if (!client.connect(host, httpPort)) {
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Serial.print("connection failed on host ");
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Serial.print(host);
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Serial.print(":");
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Serial.println(host);
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return;
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}
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// We now create a URI for the request
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String url = "/add/temp/"+MAC+"/"+temperature;
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Serial.print("Requesting URL: ");
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Serial.println(url);
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// This will send the request to the server
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client.println("GET "+url+" HTTP/1.1");
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client.println("Host: "+String(host));
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client.println("Connection: keep-alive");
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// client.println("Connection: close");
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client.println();
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delay(10);
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Serial.println();
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String line = "";
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while (client.available()) {
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char c = client.read();
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line += c;
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}
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Serial.println(line);
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nextInterval = line.toInt();
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if (nextInterval == 0) {
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nextInterval = DEFAULT_INTERVAL;
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}
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Serial.print("Temperature sent: ");
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Serial.print(temperature);
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Serial.println("°C");
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sleepSec(nextInterval);
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}
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