106 lines
2.7 KiB
C++
106 lines
2.7 KiB
C++
#include "DHT.h"
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#include <ESP8266WiFi.h>
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#include "aREST.h"
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//DHT settings:
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#define DHTPIN 14 // what digital pin we're connected to
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// Uncomment whatever type you're using!
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//#define DHTTYPE DHT11 // DHT 11
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#define DHTTYPE DHT22 // DHT 22 (AM2302), AM2321
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//#define DHTTYPE DHT21 // DHT 21 (AM2301)
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// Connect pin 1 (on the left) of the sensor to +5V
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// NOTE: If using a board with 3.3V logic like an Arduino Due connect pin 1
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// to 3.3V instead of 5V!
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// Connect pin 2 of the sensor to whatever your DHTPIN is
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// Connect pin 4 (on the right) of the sensor to GROUND
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// Connect a 10K resistor from pin 2 (data) to pin 1 (power) of the sensor
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// Initialize DHT sensor.
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// Note that older versions of this library took an optional third parameter to
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// tweak the timings for faster processors. This parameter is no longer needed
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// as the current DHT reading algorithm adjusts itself to work on faster procs.
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DHT dht(DHTPIN, DHTTYPE);
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// Create aREST instance
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aREST rest = aREST();
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// WiFi settings:
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const char* ssid = "Signal im Regal";
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const char* password = "42003489";
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#define LISTEN_PORT 80
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// Create an instance of the server
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WiFiServer server(LISTEN_PORT);
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// Variables to be exposed to the API
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float temperature;
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float humidity;
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void setup() {
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Serial.begin(115200);
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Serial.println("Sensornode start");
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//dht driver initialization
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dht.begin();
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//Expose variables to the rest api
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rest.variable("temperature", &temperature);
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rest.variable("humidity", &humidity);
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// Give name & ID to the device (ID should be 6 characters long)
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rest.set_id("1");
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rest.set_name("sensornode");
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// Connect to WiFi
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Serial.println("Connecting to wlan");
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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("\nWiFi connected");
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// Start the server
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server.begin();
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Serial.println("Server started");
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// Print the IP address
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Serial.println(WiFi.localIP());
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}
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void loop() {
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// Wait a few seconds between measurements.
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delay(2000);
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// Reading temperature or humidity takes about 250 milliseconds!
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// Sensor readings may also be up to 2 seconds 'old' (its a very slow sensor)
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float h = dht.readHumidity();
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// Read temperature as Celsius (the default)
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float t = dht.readTemperature();
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// Check if any reads failed and exit early (to try again).
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if (isnan(h) || isnan(t)) {
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Serial.println("Failed to read from DHT sensor!");
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return;
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} else {
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//set the new values
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humidity = h;
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temperature = t;
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}
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// Handle REST calls
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WiFiClient client = server.available();
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if (!client) {
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return;
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}
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while(!client.available()){
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delay(1);
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}
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rest.handle(client);
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}
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