190 lines
5.0 KiB
C++
190 lines
5.0 KiB
C++
#include "WiFi.h"
|
|
#include "ESPAsyncWebServer.h"
|
|
#include "main.h"
|
|
|
|
// Replace with your network credentials
|
|
const char *ssid = "wifi";
|
|
const char *password = "password";
|
|
|
|
#define DHTPIN GPIO_NUM_4 // Digital pin connected to the DHT sensor
|
|
|
|
// Uncomment the type of sensor in use:
|
|
#define DHTTYPE DHT_TYPE_DHT11 // DHT 11
|
|
//#define DHTTYPE DHT_TYPE_DHT22 // DHT 22 (AM2302)
|
|
//#define DHTTYPE DHT_TYPE_DHT21 // DHT 21 (AM2301)
|
|
|
|
float DHT::readTemperature(bool f)
|
|
{
|
|
float humidity = 0;
|
|
float temperature = 0;
|
|
esp_err_t result = dht_read_float_data(type_, gpio_, &humidity,
|
|
&temperature);
|
|
if (result == ESP_OK) {
|
|
ESP_LOGI("[DHT::readTemperature]", "Humidity: %.1f%% Temperature: %.1f°C",
|
|
humidity,
|
|
temperature);
|
|
} else {
|
|
ESP_LOGE("[DHT::readTemperature]", "Failed to read sensor data: %s",
|
|
esp_err_to_name(result));
|
|
}
|
|
return f ? (temperature * 1.8f) + 32 : temperature;
|
|
}
|
|
|
|
float DHT::readHumidity()
|
|
{
|
|
float humidity = 0;
|
|
float temperature = 0;
|
|
esp_err_t result = dht_read_float_data(type_, gpio_, &humidity,
|
|
&temperature);
|
|
if (result == ESP_OK) {
|
|
ESP_LOGI("[DHT::readTemperature]", "Humidity: %.1f%% Temperature: %.1f°C",
|
|
humidity,
|
|
temperature);
|
|
} else {
|
|
ESP_LOGE("[DHT::readTemperature]", "Failed to read sensor data: %s",
|
|
esp_err_to_name(result));
|
|
}
|
|
return humidity;
|
|
}
|
|
|
|
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)
|
|
float t = dht.readTemperature();
|
|
// 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 DHT Server</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">°C</sup>
|
|
</p>
|
|
<p>
|
|
<i class="fas fa-tint" style="color:#00add6;"></i>
|
|
<span class="dht-labels">Humidity</span>
|
|
<span id="humidity">%HUMIDITY%</span>
|
|
<sup class="units">%</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);
|
|
|
|
// 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(200, "text/html", index_html, processor);
|
|
});
|
|
server.on("/temperature", HTTP_GET, [ ](AsyncWebServerRequest *request) {
|
|
request->send(200, "text/plain", readDHTTemperature().c_str());
|
|
});
|
|
server.on("/humidity", HTTP_GET, [ ](AsyncWebServerRequest *request) {
|
|
request->send(200, "text/plain", readDHTHumidity().c_str());
|
|
});
|
|
|
|
// Start server
|
|
server.begin();
|
|
}
|
|
|
|
void loop()
|
|
{
|
|
|
|
}
|