add initial sensor software

Software/WeatherSensor_D1mini/README.md

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+# WeatherSensor for Wemos D1mini
+
+## Required Arduino Components
+
+### Libraries
+
+ * WifiManager - ESP8266 WiFi Connection Manager `v0.14.0`
+ * PubSubClient - Client library for MQTT messaging `v2.7.0`
+ * Adafruit Unified Sensor Driver `v1.0.3`
+ * Adafruit BME280 Library `v1.0.9`
+
+### Board Support Package
+
+ * esp8266 `v2.5.2`
+
+
+# TODO
+ * Implement initial configuration via own wifi network with web configuration page
+ * measure battery voltage
+

Software/WeatherSensor_D1mini/WeatherSensor_D1mini.ino

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+/*
+ Basic ESP8266 MQTT example
+
+ This sketch demonstrates the capabilities of the pubsub library in combination
+ with the ESP8266 board/library.
+
+ It connects to an MQTT server then:
+  - publishes "hello world" to the topic "outTopic" every two seconds
+  - subscribes to the topic "inTopic", printing out any messages
+    it receives. NB - it assumes the received payloads are strings not binary
+  - If the first character of the topic "inTopic" is an 1, switch ON the ESP Led,
+    else switch it off
+
+ It will reconnect to the server if the connection is lost using a blocking
+ reconnect function. See the 'mqtt_reconnect_nonblocking' example for how to
+ achieve the same result without blocking the main loop.
+
+ To install the ESP8266 board, (using Arduino 1.6.4+):
+  - Add the following 3rd party board manager under "File -> Preferences -> Additional Boards Manager URLs":
+       http://arduino.esp8266.com/stable/package_esp8266com_index.json
+  - Open the "Tools -> Board -> Board Manager" and click install for the ESP8266"
+  - Select your ESP8266 in "Tools -> Board"
+
+*/
+
+#include <ESP8266WiFi.h>
+#include <PubSubClient.h>
+
+// Update these with values suitable for your network.
+
+const char *ssid = "AcS";
+const char *password = "67993776724373201548";
+const char* mqtt_server = "192.168.1.98";
+const String mqtt_client = "home/S000";
+const String mqtt_topic_t = mqtt_client + String("/temperatur");
+const String mqtt_topic_h = mqtt_client + String("/humidity");
+const String mqtt_topic_p = mqtt_client + String("/pressure");
+const String mqtt_topic_l = mqtt_client + String("/lux");
+const String mqtt_topic_led_state = mqtt_client + String("/led_state");
+const String mqtt_topic_led = mqtt_client + String("/led");
+
+WiFiClient espClient;
+PubSubClient client(espClient);
+long lastMsg = 0;
+char msg[50];
+int value = 0;
+unsigned long t0;
+
+
+#include <Wire.h>
+#include <SPI.h>
+#include <Adafruit_Sensor.h>
+#include <Adafruit_BME280.h>
+
+#define BME_SCK 13
+#define BME_MISO 12p
+#define BME_MOSI 11
+#define BME_CS 10
+
+#define SEALEVELPRESSURE_HPA (1013.25)
+
+Adafruit_BME280 bme; // I2C
+
+#include <Adafruit_TSL2561_U.h>
+Adafruit_TSL2561_Unified tsl = Adafruit_TSL2561_Unified(TSL2561_ADDR_FLOAT, 12345);
+
+unsigned long delayTime;
+
+
+void setup() {
+  //pinMode(BUILTIN_LED, OUTPUT);     // Initialize the BUILTIN_LED pin as an output
+  //digitalWrite(BUILTIN_LED, HIGH);
+  Serial.begin(115200);
+  setup_wifi();
+  setup_sensor();
+  client.setServer(mqtt_server, 1883);
+  //client.setCallback(callback);
+
+  if (!client.connected()) {
+    reconnect();
+  }
+  delay(500);
+  client.loop();
+  delay(500);
+  process_sensor();
+  delay(500);
+  client.loop();
+  delay(500);
+  ESP.deepSleep(300e6);
+}
+
+ 
+
+void setup_wifi() {
+  delay(10);
+  // We start by connecting to a WiFi network
+  Serial.println();
+  Serial.print("Connecting to ");
+  Serial.println(ssid);
+
+  WiFi.begin(ssid, password);
+
+  while (WiFi.status() != WL_CONNECTED) {
+    delay(500);
+    Serial.print(".");
+  }
+
+  Serial.println("");
+  Serial.println("WiFi connected");
+  Serial.println("IP address: ");
+  Serial.println(WiFi.localIP());
+}
+
+
+
+void setup_sensor() {
+    Serial.print(F("BME280 setup... "));
+
+    bool status;
+    // default settings
+    // (you can also pass in a Wire library object like &Wire2)
+    status = bme.begin();  
+    if (!status) {
+        while(1) {
+          Serial.println("Could not find a valid BME280 sensor, check wiring!");
+          //while (1);
+          delay(2000);
+        }
+    }
+
+    tsl.enableAutoRange(true); 
+    tsl.setIntegrationTime(TSL2561_INTEGRATIONTIME_101MS);
+    delayTime = 1000;
+    Serial.println("done.");
+}
+
+
+
+void callback(char* topic, byte* payload, unsigned int length) {
+  Serial.print("Message arrived [");
+  Serial.print(topic);
+  Serial.print("] ");
+  for (int i = 0; i < length; i++) {
+    Serial.print((char)payload[i]);
+  }
+  Serial.println();
+
+  // Switch on the LED if an 1 was received as first character
+  if ((char)payload[0] == '1') {
+    digitalWrite(BUILTIN_LED, LOW);   // Turn the LED on (Note that LOW is the voltage level
+    // but actually the LED is on; this is because
+    // it is acive low on the ESP-01)
+  } else {
+    digitalWrite(BUILTIN_LED, HIGH);  // Turn the LED off by making the voltage HIGH
+  }
+
+}
+
+
+
+void reconnect() {
+  // Loop until we're reconnected
+  const String start_topic = mqtt_client + String("/client");
+  while (!client.connected()) {
+    Serial.print("Attempting MQTT connection...");
+    // Attempt to connect
+    if (client.connect(mqtt_client.c_str())) {
+      Serial.println("connected");
+      // Once connected, publish an announcement...
+      client.publish(start_topic.c_str(), "hello world");
+      // ... and resubscribe
+      client.subscribe(mqtt_topic_led.c_str());
+    } else {
+      Serial.print("failed, rc=");
+      Serial.print(client.state());
+      Serial.println(" try again in 5 seconds");
+      // Wait 5 seconds before retrying
+      delay(5000);
+    }
+  }
+}
+
+
+
+void process_sensor() {
+  unsigned long t1 = millis();
+  Serial.print("ReadSensor: ");
+  Serial.println(t1-t0);
+  t0 = t1;
+  auto temperatur = bme.readTemperature();
+  auto humidity =  bme.readHumidity();
+  auto pressure = bme.readPressure() / 100.0F;
+  
+  int led = !digitalRead(BUILTIN_LED);
+
+  sensors_event_t event;
+  tsl.getEvent(&event);
+  float light = 0.0;
+  if (event.light) {
+    light = event.light;
+  }
+  
+  snprintf(msg, 75, "T: %0.2f *C, P: %0.2f hPa, H: %0.2f, L: %0.0f LED: %d", 
+                    temperatur, pressure, humidity, light, led);
+  client.publish(mqtt_topic_t.c_str(), String(temperatur).c_str());
+  client.publish(mqtt_topic_h.c_str(), String(humidity).c_str());
+  client.publish(mqtt_topic_p.c_str(), String(pressure).c_str());
+  client.publish(mqtt_topic_l.c_str(), String(light).c_str());
+  client.publish(mqtt_topic_led_state.c_str(), String(led).c_str());
+  Serial.println(msg);  
+}
+
+
+
+void loop() {
+  delay(500);
+}