modified: platformio.ini

new file:   src/DHT.h
	new file:   src/DHT_U.h
	modified:   src/main.cpp

platformio.ini

@@ -12,3 +12,5 @@
 platform = espressif8266
 board = nodemcu
 framework = arduino
+lib_deps =
+  adafruit/DHT sensor library

src/DHT.h

@@ -0,0 +1,109 @@
+/*!
+ *  @file DHT.h
+ *
+ *  This is a library for DHT series of low cost temperature/humidity sensors.
+ *
+ *  You must have Adafruit Unified Sensor Library library installed to use this
+ * class.
+ *
+ *  Adafruit invests time and resources providing this open source code,
+ *  please support Adafruit andopen-source hardware by purchasing products
+ *  from Adafruit!
+ *
+ *  Written by Adafruit Industries.
+ *
+ *  MIT license, all text above must be included in any redistribution
+ */
+
+#ifndef DHT_H
+#define DHT_H
+
+#include "Arduino.h"
+
+/* Uncomment to enable printing out nice debug messages. */
+//#define DHT_DEBUG
+
+#define DEBUG_PRINTER                                                          \
+  Serial /**< Define where debug output will be printed.                       \
+          */
+
+/* Setup debug printing macros. */
+#ifdef DHT_DEBUG
+#define DEBUG_PRINT(...)                                                       \
+  { DEBUG_PRINTER.print(__VA_ARGS__); }
+#define DEBUG_PRINTLN(...)                                                     \
+  { DEBUG_PRINTER.println(__VA_ARGS__); }
+#else
+#define DEBUG_PRINT(...)                                                       \
+  {} /**< Debug Print Placeholder if Debug is disabled */
+#define DEBUG_PRINTLN(...)                                                     \
+  {} /**< Debug Print Line Placeholder if Debug is disabled */
+#endif
+
+/* Define types of sensors. */
+static const uint8_t DHT11{11};  /**< DHT TYPE 11 */
+static const uint8_t DHT12{12};  /**< DHY TYPE 12 */
+static const uint8_t DHT21{21};  /**< DHT TYPE 21 */
+static const uint8_t DHT22{22};  /**< DHT TYPE 22 */
+static const uint8_t AM2301{21}; /**< AM2301 */
+
+#if defined(TARGET_NAME) && (TARGET_NAME == ARDUINO_NANO33BLE)
+#ifndef microsecondsToClockCycles
+/*!
+ * As of 7 Sep 2020 the Arduino Nano 33 BLE boards do not have
+ * microsecondsToClockCycles defined.
+ */
+#define microsecondsToClockCycles(a) ((a) * (SystemCoreClock / 1000000L))
+#endif
+#endif
+
+/*!
+ *  @brief  Class that stores state and functions for DHT
+ */
+class DHT {
+public:
+  DHT(uint8_t pin, uint8_t type, uint8_t count = 6);
+  void begin(uint8_t usec = 55);
+  float readTemperature(bool S = false, bool force = false);
+  float convertCtoF(float);
+  float convertFtoC(float);
+  float computeHeatIndex(bool isFahrenheit = true);
+  float computeHeatIndex(float temperature, float percentHumidity,
+                         bool isFahrenheit = true);
+  float readHumidity(bool force = false);
+  bool read(bool force = false);
+
+private:
+  uint8_t data[5];
+  uint8_t _pin, _type;
+#ifdef __AVR
+  // Use direct GPIO access on an 8-bit AVR so keep track of the port and
+  // bitmask for the digital pin connected to the DHT.  Other platforms will use
+  // digitalRead.
+  uint8_t _bit, _port;
+#endif
+  uint32_t _lastreadtime, _maxcycles;
+  bool _lastresult;
+  uint8_t pullTime; // Time (in usec) to pull up data line before reading
+
+  uint32_t expectPulse(bool level);
+};
+
+/*!
+ *  @brief  Class that defines Interrupt Lock Avaiability
+ */
+class InterruptLock {
+public:
+  InterruptLock() {
+#if !defined(ARDUINO_ARCH_NRF52)
+    noInterrupts();
+#endif
+  }
+  ~InterruptLock() {
+#if !defined(ARDUINO_ARCH_NRF52)
+    interrupts();
+#endif
+  }
+};
+
+#endif

src/DHT_U.h

@@ -0,0 +1,101 @@
+/*!
+ *  @file DHT_U.h
+ *
+ *  DHT Temperature & Humidity Unified Sensor Library<Paste>
+ *
+ *  Adafruit invests time and resources providing this open source code,
+ *  please support Adafruit andopen-source hardware by purchasing products
+ *  from Adafruit!
+ *
+ *  Written by Tony DiCola (Adafruit Industries) 2014.
+ *
+ *  MIT license, all text above must be included in any redistribution
+ *
+ *  Permission is hereby granted, free of charge, to any person obtaining a copy
+ *  of this software and associated documentation files (the "Software"), to
+ * deal in the Software without restriction, including without limitation the
+ * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+ * sell copies of the Software, and to permit persons to whom the Software is
+ *  furnished to do so, subject to the following conditions:
+ *
+ *  The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ *  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ *  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ *  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ *  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ */
+
+#ifndef DHT_U_H
+#define DHT_U_H
+
+#include <Adafruit_Sensor.h>
+#include <DHT.h>
+
+#define DHT_SENSOR_VERSION 1 /**< Sensor Version */
+
+/*!
+ *  @brief  Class that stores state and functions for interacting with
+ * DHT_Unified.
+ */
+class DHT_Unified {
+public:
+  DHT_Unified(uint8_t pin, uint8_t type, uint8_t count = 6,
+              int32_t tempSensorId = -1, int32_t humiditySensorId = -1);
+  void begin();
+
+  /*!
+   *  @brief  Class that stores state and functions about Temperature
+   */
+  class Temperature : public Adafruit_Sensor {
+  public:
+    Temperature(DHT_Unified *parent, int32_t id);
+    bool getEvent(sensors_event_t *event);
+    void getSensor(sensor_t *sensor);
+
+  private:
+    DHT_Unified *_parent;
+    int32_t _id;
+  };
+
+  /*!
+   *  @brief  Class that stores state and functions about Humidity
+   */
+  class Humidity : public Adafruit_Sensor {
+  public:
+    Humidity(DHT_Unified *parent, int32_t id);
+    bool getEvent(sensors_event_t *event);
+    void getSensor(sensor_t *sensor);
+
+  private:
+    DHT_Unified *_parent;
+    int32_t _id;
+  };
+
+  /*!
+   *  @brief  Returns temperature stored in _temp
+   *  @return Temperature value
+   */
+  Temperature temperature() { return _temp; }
+
+  /*!
+   *  @brief  Returns humidity stored in _humidity
+   *  @return Humidity value
+   */
+  Humidity humidity() { return _humidity; }
+
+private:
+  DHT _dht;
+  uint8_t _type;
+  Temperature _temp;
+  Humidity _humidity;
+
+  void setName(sensor_t *sensor);
+  void setMinDelay(sensor_t *sensor);
+};
+
+#endif

src/main.cpp

@@ -3,7 +3,11 @@
 #include <ESP8266WiFi.h>
 #include <ESP8266WebServer.h>
 #include <EEPROM.h>
+#include <DHT.h>
 
+#define DHTPIN 0
+#define DHTTYPE DHT22
+DHT dht22(DHTPIN, DHTTYPE); // <-- Global object
 #define ledPin 2
 int wifiConnectStatus = 0; //WiFi connection status
 
@@ -82,6 +86,7 @@ void setup() {
   Serial.println("Developed by Madobi Nanami");
   Serial.println("Personal site: https://nanami.tech");
   Serial.println("Tech support & Feedback: yzt114@yeah.net");
+  dht22.begin();
   EEPROM.begin(64);
   pinMode(ledPin, OUTPUT);
   digitalWrite(ledPin, LOW);
@@ -118,10 +123,49 @@ void setup() {
     Serial.println(ssid);
     Serial.print("Loaded WiFi Password: ");
     Serial.println(password);
+    if (connectWiFi(ssid, password) == 1){
+      Serial.println("Connected to WiFi successfully.");
+      Serial.print("IP Address: ");
+      Serial.println(WiFi.localIP());
+      server.begin();
+      digitalWrite(ledPin, LOW); // Turn on LED after connection
+    } //Connect to WiFi with loaded settings
   }
-
 }
 
 void loop() {
-  // put your main code here, to run repeatedly:
+  String user_command;
+  WiFiClient client; // Declare client at the start
+  if(server.hasClient()) { // Check if there is a client connected
+    Serial.println("A new client connected to web server.");
+    server.setNoDelay(true);
+    client = server.available(); // Assign client here
+    if(client) {
+      Serial.println("New client connected.");
+      String currentLine = "";
+      while(client.connected()) {
+        if(client.available()) {
+          char c = client.read();
+          Serial.write(c);
+          if(c == '\n') {
+            currentLine.trim(); // Remove whitespace
+            user_command = currentLine;
+            Serial.printf("Received command: %s\n", user_command.c_str());
+          }
+        }
+      }
+    }
+  }
+  if (user_command == "temp.read") {
+    float temperature = dht22.readTemperature();
+    client.println(temperature);
+    Serial.printf("Temperature: %.2f °C\n", temperature);
+    user_command = ""; // Clear command after processing
+  }
+  if (user_command == "hum.read") {
+    float humidity = dht22.readHumidity();
+    client.println(humidity);
+    Serial.printf("Humidity: %.2f %%\n", humidity);
+    user_command = ""; // Clear command after processing
+  }
 }