Différences

Ci-dessous, les différences entre deux révisions de la page.

--- start:arduino:esp32:temperature [2021/03/16 11:31] – gerardadmin
+++ start:arduino:esp32:temperature [2023/01/27 16:08] (Version actuelle) – modification externe 127.0.0.1
@@ Ligne 27: / Ligne 27: @@
 === Matériel ===
+**ESP32 TTGO LORA 32 V2.0**
+[[https://github.com/LilyGO/TTGO-LORA32|Caracteristiques ESP32 TTGO LORA 32 V2.0]]
+{{ :start:arduino:esp32:htb1v_abbtni8kjjsszbq6z4kfxah.resized.jpg?direct&400 |}}
+** DHT 22 **
+[[https://www.didel.com/DHT22.pdf|Caractéristiques DHT22 PDF FR]]
+{{ :start:arduino:esp32:dht22-pinout-800x800.jpg?direct&300 |}}
+{{ :start:arduino:esp32:capture_du_2021-03-16_12-38-57.png?direct&600 |}}
 === Branchement ===
+ESP32 Lora32 V2 + DHT22
+{{ :start:arduino:esp32:capture_du_2021-03-16_12-21-43.jpg?direct&400 |}}
+=== Librairies à installer===
+** DHT **
+[[https://github.com/adafruit/DHT-sensor-library| DHT-sensor-Library]]
+**ESPAsyncWebServer**
+[[https://github.com/me-no-dev/ESPAsyncWebServer|ESPAsyncWebServer.zip]]
+**AsyncTCP**
+[[https://github.com/me-no-dev/AsyncTCP|AsyncTCP.zip]]
+**Adafruit_Sensor**
+[[https://github.com/adafruit/Adafruit_Sensor|Adafruit_Sensor.zip]]
 === Programmes ===
+<code c ESP32_Temperature_serveur_Web.ino>
+/*********
+  Rui Santos
+  Complete project details at https://randomnerdtutorials.com
+*********/
-==== Broches  ESP32 ====
+// Import required libraries
+#include "WiFi.h"
+#include "ESPAsyncWebServer.h"
+#include <Adafruit_Sensor.h>
+#include <DHT.h>
+// Replace with your network credentials
+const char* ssid = "xxxxxxxxxxxx";
+const char* password = "xxxxxxxxxxxxxx";
+#define DHTPIN 13    // Digital pin connected to the DHT sensor
+// Uncomment the type of sensor in use:
+//#define DHTTYPE    DHT11     // DHT 11
+#define DHTTYPE    DHT22     // DHT 22 (AM2302)
+//#define DHTTYPE    DHT21     // DHT 21 (AM2301)
+DHT dht(DHTPIN, DHTTYPE);
+// Create AsyncWebServer object on port 80
+AsyncWebServer server(80);
+String readDHTTemperature() {
+  // Sensor readings may also be up to 2 seconds 'old' (its a very slow sensor)
+  // Read temperature as Celsius (the default)
+  float t = dht.readTemperature();
+  // Read temperature as Fahrenheit (isFahrenheit = true)
+  //float t = dht.readTemperature(true);
+  // Check if any reads failed and exit early (to try again).
+  if (isnan(t)) {
+    Serial.println("Failed to read from DHT sensor!");
+    return "--";
+  }
+  else {
+    Serial.println(t);
+    return String(t);
+  }
+}
+String readDHTHumidity() {
+  // Sensor readings may also be up to 2 seconds 'old' (its a very slow sensor)
+  float h = dht.readHumidity();
+  if (isnan(h)) {
+    Serial.println("Failed to read from DHT sensor!");
+    return "--";
+  }
+  else {
+    Serial.println(h);
+    return String(h);
+  }
+}
+const char index_html[] PROGMEM = R"rawliteral(
+<!DOCTYPE HTML><html>
+<head>
+  <meta name="viewport" content="width=device-width, initial-scale=1">
+  <link rel="stylesheet" href="https://use.fontawesome.com/releases/v5.7.2/css/all.css" integrity="sha384-fnmOCqbTlWIlj8LyTjo7mOUStjsKC4pOpQbqyi7RrhN7udi9RwhKkMHpvLbHG9Sr" crossorigin="anonymous">
+  <style>
+    html {
+     font-family: Arial;
+     display: inline-block;
+     margin: 0px auto;
+     text-align: center;
+    }
+    h2 { font-size: 3.0rem; }
+    p { font-size: 3.0rem; }
+    .units { font-size: 1.2rem; }
+    .dht-labels{
+      font-size: 1.5rem;
+      vertical-align:middle;
+      padding-bottom: 15px;
+    }
+  </style>
+</head>
+<body>
+  <h2>ESP32 Serveur DHT 22</h2>
+  <p>
+    <i class="fas fa-thermometer-half" style="color:#059e8a;"></i>
+    <span class="dht-labels">Temperature</span>
+    <span id="temperature">%TEMPERATURE%</span>
+    <sup class="units">&deg;C</sup>
+  </p>
+  <p>
+    <i class="fas fa-tint" style="color:#00add6;"></i>
+    <span class="dht-labels">Humidite</span>
+    <span id="humidity">%HUMIDITY%</span>
+    <sup class="units">&percnt;</sup>
+  </p>
+</body>
+<script>
+setInterval(function ( ) {
+  var xhttp = new XMLHttpRequest();
+  xhttp.onreadystatechange = function() {
+    if (this.readyState == 4 && this.status == 200) {
+      document.getElementById("temperature").innerHTML = this.responseText;
+    }
+  };
+  xhttp.open("GET", "/temperature", true);
+  xhttp.send();
+}, 10000 ) ;
+setInterval(function ( ) {
+  var xhttp = new XMLHttpRequest();
+  xhttp.onreadystatechange = function() {
+    if (this.readyState == 4 && this.status == 200) {
+      document.getElementById("humidity").innerHTML = this.responseText;
+    }
+  };
+  xhttp.open("GET", "/humidity", true);
+  xhttp.send();
+}, 10000 ) ;
+</script>
+</html>)rawliteral";
+// Replaces placeholder with DHT values
+String processor(const String& var){
+  //Serial.println(var);
+  if(var == "TEMPERATURE"){
+    return readDHTTemperature();
+  }
+  else if(var == "HUMIDITY"){
+    return readDHTHumidity();
+  }
+  return String();
+}
+void setup(){
+  // Serial port for debugging purposes
+  Serial.begin(115200);
+  dht.begin();
+  // Connect to Wi-Fi
+  WiFi.begin(ssid, password);
+  while (WiFi.status() != WL_CONNECTED) {
+    delay(1000);
+    Serial.println("Connecting to WiFi..");
+  }
+  // Print ESP32 Local IP Address
+  Serial.println(WiFi.localIP());
+  // Route for root / web page
+  server.on("/", HTTP_GET, [](AsyncWebServerRequest *request){
+    request->send_P(200, "text/html", index_html, processor);
+  });
+  server.on("/temperature", HTTP_GET, [](AsyncWebServerRequest *request){
+    request->send_P(200, "text/plain", readDHTTemperature().c_str());
+  });
+  server.on("/humidity", HTTP_GET, [](AsyncWebServerRequest *request){
+    request->send_P(200, "text/plain", readDHTHumidity().c_str());
+  });
+  // Start server
+  server.begin();
+}
+void loop(){
+}
+</code>
+=== Ecran serveur web ===
+{{ :start:arduino:esp32:capture_du_2021-03-16_12-45-05.png?direct&600 |}}
-**ESP32 TTGO LORA 32 V2.0**
-{{ :start:arduino:esp32:htb1v_abbtni8kjjsszbq6z4kfxah.resized.jpg?direct&400 |}}