From 1a99342c5ac249662f8a7c3ba5e1ead089a0aa2e Mon Sep 17 00:00:00 2001
From: Wolfgang Hottgenroth <woho@hottis.de>
Date: Wed, 16 Aug 2017 10:46:59 +0200
Subject: [PATCH] first working version

---
 sketch_aug14a.ino | 150 ++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 150 insertions(+)
 create mode 100644 sketch_aug14a.ino

diff --git a/sketch_aug14a.ino b/sketch_aug14a.ino
new file mode 100644
index 0000000..aa6015c
--- /dev/null
+++ b/sketch_aug14a.ino
@@ -0,0 +1,150 @@
+#include <ESP8266WiFi.h>
+#include <PubSubClient.h>
+
+#include <OneWire.h>
+#include <DallasTemperature.h>
+
+
+// #define DEBUG
+
+const char* ssid = "EG-WLAN";
+const char* password = "shae3sheuthai2oluNgiqueiyahyumeiphughi8jequeil6taethooyeik1joh5";
+const char* mqttServer = "172.16.2.15";
+//const char* ssid = "WLan-KI-Pro";
+//const char* password = "sVAPHCmo";
+//const char* mqttServer = "10.11.184.91";
+
+const uint16_t sleepTime = 300;
+
+
+WiFiClient espClient;
+PubSubClient client(espClient);
+
+
+#define ONE_WIRE_BUS 2
+OneWire oneWire(ONE_WIRE_BUS);
+DallasTemperature sensors(&oneWire);
+
+
+uint32_t startTime = 0;
+
+void setup() {
+  startTime = millis();
+#ifdef DEBUG  
+  Serial.begin(115200);
+  Serial.println("Starting ...");
+#endif
+
+  setup_wifi();
+  client.setServer(mqttServer, 1883);
+  
+  sensors.begin();
+  uint8_t num = sensors.getDeviceCount();
+#ifdef DEBUG  
+  Serial.print("device count: ");
+  Serial.println(num);
+#endif
+
+  sensors.setResolution(12);
+
+#ifdef DEBUG
+  Serial.println("Started.");
+#endif
+
+  mqtt_connect();
+  read_thermometer();
+
+#ifdef DEBUG
+  Serial.println("Sleeping");
+#endif  
+  ESP.deepSleep(sleepTime * 1000000);
+
+}
+
+void setup_wifi() {
+
+  delay(10);
+  // We start by connecting to a WiFi network
+#ifdef DEBUG  
+  Serial.println();
+  Serial.print("Connecting to ");
+  Serial.println(ssid);
+#endif
+
+  WiFi.begin(ssid, password);
+
+  while (WiFi.status() != WL_CONNECTED) {
+    delay(500);
+#ifdef DEBUG    
+    Serial.print(".");
+#endif    
+  }
+
+#ifdef DEBUG
+  Serial.println("");
+  Serial.println("WiFi connected");
+  Serial.println("IP address: ");
+  Serial.println(WiFi.localIP());
+#endif  
+}
+
+void reconnect() {
+  // Loop until we're reconnected
+  while (!client.connected()) {
+#ifdef DEBUG    
+    Serial.print("Attempting MQTT connection...");
+#endif    
+    // Attempt to connect
+    if (client.connect("ESP8266Client2")) {
+#ifdef DEBUG      
+      Serial.println("connected");
+#endif      
+      // Once connected, publish an announcement...
+      //client.publish("IoT/espThermometer/status", "hello world");
+    } else {
+#ifdef DEBUG      
+      Serial.print("failed, rc=");
+      Serial.print(client.state());
+      Serial.println(" try again in 5 seconds");
+#endif      
+      // Wait 5 seconds before retrying
+      delay(5000);
+    }
+  }
+}
+
+
+void mqtt_connect() {
+  if (!client.connected()) {
+    reconnect();
+  }
+  client.loop();
+}
+
+
+void read_thermometer() {
+    sensors.requestTemperatures();
+  
+    float t = sensors.getTempCByIndex(0);
+#ifdef DEBUG    
+    Serial.print(t);
+    Serial.println();  
+#endif
+
+    int16_t t1 = (int)t;
+    int16_t t2 = (int)((t - t1)*100);
+
+    uint32_t duration = millis() - startTime;
+
+    
+    char topic[128];
+    snprintf(topic, 127, "IoT/espThermometer2/%s/measurement", WiFi.macAddress().c_str());
+    char payload[128];
+    snprintf(payload, 127, "%d.%d %ld", t1, t2, duration);
+    client.publish(topic, payload, true);
+    
+  
+}
+
+void loop() {
+}