Arduino Sketch

esp_ws2812_2dwelt.ino

+/*************************************
+ * Quelltext um die Anzahl von Besuchern
+ * in der 2D Welt auf RGB LEDs zu signalisieren
+ * 
+ * https://edugit.org/eshszg/arduino_2dwelt_usercount
+ * GNU GENERAL PUBLIC LICENSE Version 3
+ * ************************************/
+
+// ESP32 oder ESP8266?
+#define ESP32
+
+// Boardverwaltung:
+// ESP8266: NodeMCU 1.0 (ESP-12E Module)
+// ESP32:   NodeMCU-32S
+//
+// Werkzeuge --> Bibliotheksverwaltung: HTTPClient, NeoPixel
+
+
+#include <Adafruit_NeoPixel.h>
+#include <HTTPClient.h>
+
+// Pin an dem die WS2812 RGB LEDs hängen
+#define PIN 15
+
+
+// #### Links die irgendwie zum Stricken des Quelltextes geholfen haben
+// https://tttapa.github.io/ESP8266/Chap13%20-%20OTA.html
+// https://polluxlabs.net/arduino-tutorials/json-abrufen-dekodieren-mit-arduinojson/
+// https://polluxlabs.net/esp8266-projekte/ein-newsticker-per-api-call-json-und-esp32/
+//https://polluxlabs.net/arduino-tutorials/json-abrufen-dekodieren-mit-arduinojson/
+
+// Beispiel URLs zum abrufen
+// https://pusher.kraut.world/metrics.json
+// https://wak-lab.org/krautworld_space_user_counter/?s=wak-lab.json
+
+// https://wak-lab.org/krautworld_space_user_counter/?s=main.json
+// https://wak-lab.org/krautworld_space_user_counter/?s=sachsen.json
+// https://wak-lab.org/krautworld_space_user_counter/?s=zittau.json
+// https://wak-lab.org/krautworld_space_user_counter/?s=werkraum.json
+
+// When we setup the NeoPixel library, we tell it how many pixels, and which pin to use to send signals.
+// Note that for older NeoPixel strips you might need to change the third parameter--see the strandtest
+Adafruit_NeoPixel pixels = Adafruit_NeoPixel(3, PIN, NEO_GRB + NEO_KHZ800);
+
+
+
+#ifdef ESP32
+#include <WiFi.h>
+#include <WiFiMulti.h>
+WiFiMulti wifiMulti;
+#else
+#include <ESP8266WiFi.h>
+#include <ESP8266WiFiMulti.h>
+ESP8266WiFiMulti wifiMulti;     // Create an instance of the ESP8266WiFiMulti class, called 'wifiMulti'
+#endif
+
+
+
+#if __has_include ("passworte.h")
+#include "passworte.h"
+#else
+// define here your WLAN credentials for later use,
+// or put them in the file "passworte.h" in the same directory
+
+// add all yout WLAN credentials in one line
+#define PASSWORTE_Wifi   wifiMulti.addAP("WLAN-SSID", "password"); wifiMulti.addAP("FreeInet", "");
+#endif
+
+
+WiFiClient client;
+
+const byte led = 2;
+
+unsigned long previousTime_json = millis();
+unsigned long interval_json = 5 * 1000;
+
+unsigned long previousTime_neopixel = millis();
+unsigned long interval_neopixel = 100;
+
+unsigned int neopixel_count = 0, neo_r = 20, neo_g = 0, neo_b = 0;
+
+unsigned int room_count0, room_count1, room_count2, room_count3;
+
+
+void setup() {
+  Serial.begin(115200);         // Start the Serial communication to send messages to the computer
+  delay(10);
+  Serial.println('\n');
+
+
+
+
+  //wifiMulti.addAP("wlan ssid", "password");   // add Wi-Fi networks you want to connect to
+  //wifiMulti.addAP("Freifunk", "");
+  // inlcude wifi credentials from #define
+  PASSWORTE_Wifi
+
+  Serial.println("Connecting ...");
+  int i = 0;
+  while (wifiMulti.run() != WL_CONNECTED) { // Wait for the Wi-Fi to connect
+    delay(250);
+    Serial.print('.');
+  }
+  Serial.println('\n');
+  Serial.print("Connected to ");
+  Serial.println(WiFi.SSID());              // Tell us what network we're connected to
+  Serial.print("IP address:\t");
+  Serial.println(WiFi.localIP());           // Send the IP address of the ESP to the computer
+
+  pinMode(led, OUTPUT);
+  digitalWrite(led, 1); // LED off
+  pinMode(12, INPUT_PULLUP);
+  pinMode(13, INPUT_PULLUP);
+  pinMode(14, INPUT_PULLUP);
+  pinMode(15, INPUT_PULLUP);
+
+
+
+  pixels.begin(); // This initializes the NeoPixel library.
+
+}
+
+void loop() {
+  //ArduinoOTA.handle();
+
+
+
+
+  // periodisch aller x Sekunden versuchen die Server zu erreichen
+  unsigned long diff = millis() - previousTime_json;
+  if (wifiMulti.run() == WL_CONNECTED && \
+      diff > interval_json) { // Only if the Wi-Fi is connected
+
+
+    Serial.print("JSON: ");
+
+    Serial.println(digitalRead(13));
+
+    room_count0 = count_2d(0);
+    room_count1 = count_2d(1);
+    room_count2 = count_2d(2);
+    room_count3 = count_2d(3);
+
+
+    // Thingspeak Code Ende
+    Serial.println('\n');
+    Serial.print("Connected to ");
+    Serial.println(WiFi.SSID());              // Tell us what network we're connected to
+    Serial.print("IP address:\t");
+    Serial.println(WiFi.localIP());           // Send the IP address of the ESP8266/ESP32 to the computer
+
+    previousTime_json += diff;
+  }
+
+  diff = millis() - previousTime_neopixel;
+  if (wifiMulti.run() == WL_CONNECTED && \
+      diff > interval_neopixel) {
+    neopixel_count++; // ungenutzt
+
+    // Hier irgendwie eine Zuordnung von Anzahl an Besuchern und Farben machen :-)
+    pixels.setPixelColor(0, pixels.Color( room_count0 * 10, room_count1 * 10,  0));
+    pixels.setPixelColor(1, pixels.Color( 0, room_count2 * 10, 0));
+    pixels.setPixelColor(2, pixels.Color( 0, 0, room_count3 * 20));
+    pixels.show();
+    previousTime_neopixel += diff;
+  }
+}
+
+
+unsigned int count_2d(int parameter) {
+  if ((WiFi.status() == WL_CONNECTED)) {
+    HTTPClient http;
+    String url = "";
+    switch (parameter) {
+      case 0:
+        url = "https://wak-lab.org/krautworld_space_user_counter/?s=main.json";
+        break;
+      case 1:
+        url = "https://wak-lab.org/krautworld_space_user_counter/?s=sachsen.json";
+        break;
+      case 2:
+        url = "https://wak-lab.org/krautworld_space_user_counter/?s=zittau.json";
+        break;
+      case 3:
+        url = "https://wak-lab.org/krautworld_space_user_counter/?s=werkraum.json";
+        break;
+      default:
+        url = "https://wak-lab.org/krautworld_space_user_counter/?s=main.json";
+
+    }
+
+    Serial.print("Param=");
+    Serial.print(parameter);
+    Serial.print(" httpCode=");
+
+    http.begin(url);
+    int httpCode = http.GET();
+
+    if (httpCode == 200) {
+      Serial.print(httpCode);
+
+    }
+    String payload = http.getString();
+    Serial.print(" payload=");
+    Serial.print(payload);
+    Serial.print(" payload.toInt=");
+    Serial.println(payload.toInt());
+    return payload.toInt();
+  } else {
+    Serial.println("Wifi not connected...");
+  }
+  return 0;
+}