From dc9027678361f91dde79ed484fa82d04f8acf6e3 Mon Sep 17 00:00:00 2001
From: Julian Kiedaisch <julian.kiedaisch@mdg-hamburg.de>
Date: Tue, 4 Mar 2025 12:12:19 +0000
Subject: [PATCH] server.ino added

---
 sensor.ino | 173 +++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 173 insertions(+)
 create mode 100644 sensor.ino

diff --git a/sensor.ino b/sensor.ino
new file mode 100644
index 0000000..6859b44
--- /dev/null
+++ b/sensor.ino
@@ -0,0 +1,173 @@
+#include <Wire.h>
+#include <SPI.h>
+#include <Adafruit_Sensor.h>
+#include <Adafruit_BMP280.h>
+#include <ESP8266WiFi.h>
+#include <ESP8266HTTPClient.h>
+#include <WiFiClientSecure.h>
+#include "SparkFunCCS811.h"
+#include <AM2302-Sensor.h>
+
+// Set WiFi credentials
+#define WIFI_SSID "mdg-sensor"
+#define WIFI_PASS "" // wird von Lehrkraft ausgefuellt
+
+const char* sender = "NWP-SensorX"; // muss eindeutiger Name sein
+const char* serverName = "https://sensor.hub.mdg-hamburg.de/send";
+
+#define SEALEVELPRESSURE_HPA (1013.25)
+#define BMP_SCK 0//14
+#define BMP_MISO 12
+#define BMP_MOSI 2//0
+#define BMP_CS 14//2
+
+#define CCS811_ADDR 0x5A
+
+
+Adafruit_BMP280 bmp(BMP_CS, BMP_MOSI, BMP_MISO,  BMP_SCK);
+
+CCS811 airSensor(CCS811_ADDR);
+
+float temperature;
+float pressure;
+float temperature_2;
+float humidity;
+
+uint co2;
+uint tvoc;
+
+constexpr unsigned int SENSOR_PIN {13U};
+
+AM2302::AM2302_Sensor am2302{SENSOR_PIN};
+
+
+unsigned long lastTime = 0;  
+unsigned long timerDelay = 60000;  // send readings timer
+
+void getSensorReadings(){
+ 
+  temperature = bmp.readTemperature();
+  pressure = bmp.readPressure() / 100.0F;
+  auto status = am2302.read();
+  temperature_2 = am2302.get_Temperature();
+  humidity = am2302.get_Humidity();
+
+  if (airSensor.dataAvailable())
+    {
+    airSensor.readAlgorithmResults();
+    co2 = airSensor.getCO2();
+    tvoc = airSensor.getTVOC();
+    }
+  airSensor.setEnvironmentalData(humidity, temperature);
+}
+
+
+void setup() {
+  Serial.begin(115200);
+
+  // Begin WiFi
+  WiFi.begin(WIFI_SSID, WIFI_PASS);
+
+  // Connecting to WiFi...
+  Serial.print("Connecting to ");
+  Serial.print(WIFI_SSID);
+  while (WiFi.status() != WL_CONNECTED)
+  {
+    delay(100);
+    Serial.print(".");
+  }
+  
+  // Connected to WiFi
+  Serial.println();
+  Serial.println("Connected!");
+  Serial.print("IP address for network ");
+  Serial.print(WIFI_SSID);
+  Serial.print(" : ");
+  Serial.println(WiFi.localIP());
+
+  bool status;
+  // default settings
+  // (you can also pass in a Wire library object like &Wire2)
+  status = bmp.begin();  
+  if (!status) {
+    Serial.println("Could not detect a BMP280 sensor, Fix wiring Connections!");
+    while (1);
+  }
+   
+   if (am2302.begin()) {
+      // this delay is needed to receive valid data,
+      // when the loop directly read again
+      delay(3000);
+   }
+   else {
+      while (true) {
+      Serial.println("Error: am2302 sensor check. => Please check sensor connection!");
+      delay(10000);
+      }
+   }
+
+  Wire.begin();
+    if (airSensor.begin() == false)
+    {
+      Serial.print("CCS811 error. Please check wiring. Freezing...");
+      while (1)
+        ;
+    }
+}
+
+void loop() {
+  if ((millis() - lastTime) > timerDelay) {
+    //timeClient.update();
+    //Get a time structure
+    //time_t epochTime = timeClient.getEpochTime(); 
+    //struct tm *ptm = gmtime ((time_t *)&epochTime); 
+  
+   //int monthDay = ptm->tm_mday;
+    //int currentMonth = ptm->tm_mon+1;
+    //int currentYear = ptm->tm_year+1900;
+    //String currentDate = String(currentYear) + "-" + String(currentMonth) + "-" + String(monthDay);
+    //Serial.print("Current date: ");
+    //Serial.println(currentDate);
+    //String formattedTime = timeClient.getFormattedTime();
+    //Serial.print("Formatted Time: ");
+    //Serial.println(formattedTime);  
+    getSensorReadings();
+    Serial.printf("Temperature = %.2f ºC \n", temperature);
+    Serial.printf("Temperature2 = %.2f ºC \n", temperature_2);
+    Serial.printf("Pressure = %.2f hPa \n", pressure);
+    Serial.printf("Humidity = %.2f \n", humidity);
+    Serial.printf("CO2 = %d \n", co2);
+    Serial.printf("TVOC = %d \n", tvoc);
+    Serial.println();
+
+  if(WiFi.status()== WL_CONNECTED){
+      WiFiClientSecure client;
+      client.setInsecure();
+      HTTPClient http;
+          // Your Domain name with URL path or IP address with path
+      http.begin(client, serverName);
+      // Specify content-type header
+      http.addHeader("Content-Type", "application/json");
+      // Data to send with HTTP POST
+      String httpRequestData = "{\"sender\":\"" + String(sender) + "\",\"data\":[" + String(temperature) + "," + String(temperature_2) + "," + String(pressure) + "," + String(humidity) + "," + String(co2) + "," + String(tvoc) + "]}";           
+      // Send HTTP POST request
+      Serial.println(httpRequestData);
+      int httpResponseCode = http.POST(httpRequestData);
+      
+      Serial.print("HTTP Response code: ");
+      Serial.println(httpResponseCode);
+        
+      // Free resources
+      http.end();
+    }
+    else {
+      Serial.println("WiFi Disconnected");
+      WiFi.begin(WIFI_SSID, WIFI_PASS);
+    }
+
+
+    lastTime = millis();
+
+
+  }
+}
\ No newline at end of file