From 300aeb72d6a3a2655e1b0ddd1b1880714a1c15b0 Mon Sep 17 00:00:00 2001
From: Stefan <stefan@unhb.de>
Date: Mon, 19 Dec 2022 12:02:11 +0100
Subject: [PATCH] Erste Version

---
 Credentials-sample.h   |  7 ++++
 Spacestatus-Taster.ino | 88 ++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 95 insertions(+)
 create mode 100644 Credentials-sample.h
 create mode 100644 Spacestatus-Taster.ino

diff --git a/Credentials-sample.h b/Credentials-sample.h
new file mode 100644
index 0000000..507d30a
--- /dev/null
+++ b/Credentials-sample.h
@@ -0,0 +1,7 @@
+#define SSID   "YOUR-WIFI-SSID"
+#define PASSWD "YOUR-WIFI-KEY"
+
+#define MQTT_HOST  "YOUR-MQTT-BROKER"
+#define MQTT_TOPIC "YOUR-MQTT-TOPIC"
+
+#define LED_BRIGHTNESS 10
diff --git a/Spacestatus-Taster.ino b/Spacestatus-Taster.ino
new file mode 100644
index 0000000..eb89610
--- /dev/null
+++ b/Spacestatus-Taster.ino
@@ -0,0 +1,88 @@
+#include <Bounce2.h>
+#include <Adafruit_NeoPixel.h>
+#include <ESP8266WiFi.h>
+#include <MQTTPubSubClient.h>
+#include "Credentials.h"
+
+#define BUTTON_PIN  D7   //  Button at D8 / GPIO-15
+#define    LED_PIN  D2   // WS2812b at D2 / GPIO-4
+#define NUMPIXELS    1
+#define CLOSE 0
+#define  OPEN 1
+#define    NA 2
+
+Adafruit_NeoPixel pixel = Adafruit_NeoPixel(NUMPIXELS, LED_PIN, NEO_GRB + NEO_KHZ800);
+Bounce button = Bounce(); // Instantiate a Bounce object
+WiFiClient client;
+MQTTPubSubClient mqtt;
+
+int currentState;
+char* ssid = SSID;
+char* pass = PASSWD;
+
+char* mqttHost = MQTT_HOST;
+
+void setup() {
+
+  Serial.begin(115200);
+  Serial.print("\n\nSetup starting...\n");
+
+  pixel.begin();
+
+  button.attach(BUTTON_PIN, INPUT_PULLUP); // Attach the debouncer to a pin with INPUT_PULLUP mode
+  button.interval(25); // Use a debounce interval of 25 milliseconds
+
+  currentState=NA;
+  pixel.setPixelColor(0, pixel.Color(0,0,LED_BRIGHTNESS)); pixel.show();
+
+  Serial.print("Connecting to wifi...");
+  WiFi.begin(ssid, pass);
+  while (WiFi.status() != WL_CONNECTED) {
+    Serial.print("."); delay(100);
+  }
+  Serial.println(" Wifi connected!");
+
+  Serial.print("Connecting to MQTT-Broker - Host connection...");
+  while (!client.connect(MQTT_HOST, 1883)) {
+    Serial.print("."); delay(100);
+  }
+  Serial.println(" MQTT-Host connected!");
+
+  // initialize mqtt client
+  mqtt.begin(client);
+
+  Serial.print("Connecting to MQTT-Broker - MQTT...");
+  while (!mqtt.connect("arduino", "public", "public")) {
+    Serial.print("."); delay(100);
+  }
+  Serial.println(" MQTT fully connected!");
+
+  Serial.print("\nSetup done.\n");
+}
+
+void openSpace() {
+  currentState=OPEN;
+  Serial.println("Space is now open");
+  pixel.setPixelColor(0, pixel.Color(0,LED_BRIGHTNESS,0)); pixel.show();
+  mqtt.publish(MQTT_TOPIC, "OPEN");
+}
+
+void closeSpace() {
+  currentState=CLOSE;
+  Serial.println("Space is now closed");
+  pixel.setPixelColor(0, pixel.Color(LED_BRIGHTNESS,0,0)); pixel.show();
+  mqtt.publish("UHB/Door", "CLOSE");
+}
+
+void loop() {
+
+  button.update(); // Update the Bounce instance
+  
+  if ( button.fell() ) {  // Call code if button transitions from HIGH to LOW
+    switch(currentState) {
+    case    NA:
+    case CLOSE:  openSpace(); break;
+    case  OPEN: closeSpace(); break;
+    }
+  }
+}