Wemos + Home assistant MQTT

Started by bobis, 24 Aug 2018, 11:59

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bobis

24 Aug 2018, 11:59 Last Edit: 24 Aug 2018, 12:05 by bobis
Wemos, Arduion IDE

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#include <ESP8266WiFi.h>
#include <PubSubClient.h>

#define MQTT_VERSION MQTT_VERSION_3_1_1

// Wifi: SSID and password
const char* WIFI_SSID = "ssid";
const char* WIFI_PASSWORD = "password";

// MQTT: ID, server IP, port, username and password
const PROGMEM char* MQTT_CLIENT_ID = "fasad_light1";
const PROGMEM char* MQTT_SERVER_IP = "192.168.0.114";
const PROGMEM uint16_t MQTT_SERVER_PORT = 1883;
const PROGMEM char* MQTT_USER = "homeassistant";
const PROGMEM char* MQTT_PASSWORD = "password";

// MQTT: topics
const char* MQTT_LIGHT_STATE_TOPIC = "fasad/light1/status";
const char* MQTT_LIGHT_COMMAND_TOPIC = "fasad/light1/switch";

// payloads by default (on/off)
const char* LIGHT_ON = "ON";
const char* LIGHT_OFF = "OFF";

const PROGMEM uint8_t LED_PIN = 5;
boolean m_light_state = false; // light is turned off by default

WiFiClient wifiClient;
PubSubClient client(wifiClient);

// function called to publish the state of the light (on/off)
void publishLightState() {
  if (m_light_state) {
    client.publish(MQTT_LIGHT_STATE_TOPIC, LIGHT_ON, true);
  } else {
    client.publish(MQTT_LIGHT_STATE_TOPIC, LIGHT_OFF, true);
  }
}

// function called to turn on/off the light
void setLightState() {
  if (m_light_state) {
    digitalWrite(LED_PIN, HIGH);
    Serial.println("INFO: Turn light on...");
  } else {
    digitalWrite(LED_PIN, LOW);
    Serial.println("INFO: Turn light off...");
  }
}

// function called when a MQTT message arrived
void callback(char* p_topic, byte* p_payload, unsigned int p_length) {
  // concat the payload into a string
  String payload;
  for (uint8_t i = 0; i < p_length; i++) {
    payload.concat((char)p_payload[i]);
  }
  
  // handle message topic
  if (String(MQTT_LIGHT_COMMAND_TOPIC).equals(p_topic)) {
    // test if the payload is equal to "ON" or "OFF"
    if (payload.equals(String(LIGHT_ON))) {
      if (m_light_state != true) {
        m_light_state = true;
        setLightState();
        publishLightState();
      }
    } else if (payload.equals(String(LIGHT_OFF))) {
      if (m_light_state != false) {
        m_light_state = false;
        setLightState();
        publishLightState();
      }
    }
  }
}

void reconnect() {
  // Loop until we're reconnected
  while (!client.connected()) {
    Serial.println("INFO: Attempting MQTT connection...");
    // Attempt to connect
    if (client.connect(MQTT_CLIENT_ID, MQTT_USER, MQTT_PASSWORD)) {
      Serial.println("INFO: connected");
      // Once connected, publish an announcement...
      publishLightState();
      // ... and resubscribe
      client.subscribe(MQTT_LIGHT_COMMAND_TOPIC);
    } else {
      Serial.print("ERROR: failed, rc=");
      Serial.print(client.state());
      Serial.println("DEBUG: try again in 5 seconds");
      // Wait 5 seconds before retrying
      delay(5000);
    }
  }
}

void setup() {
  // init the serial
  Serial.begin(115200);

  // init the led
  pinMode(LED_PIN, OUTPUT);
  analogWriteRange(255);
  setLightState();

  // init the WiFi connection
  Serial.println();
  Serial.println();
  Serial.print("INFO: Connecting to ");
  WiFi.mode(WIFI_STA);
  Serial.println(WIFI_SSID);
  WiFi.begin(WIFI_SSID, WIFI_PASSWORD);

  while (WiFi.status() != WL_CONNECTED) {
    delay(500);
    Serial.print(".");
  }

  Serial.println("");
  Serial.println("INFO: WiFi connected");
  Serial.print("INFO: IP address: ");
  Serial.println(WiFi.localIP());

  // init the MQTT connection
  client.setServer(MQTT_SERVER_IP, MQTT_SERVER_PORT);
  client.setCallback(callback);
}

void loop() {
  if (!client.connected()) {
    reconnect();
  }
  client.loop();
}



Home Assistant Config


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homeassistant:
  # Name of the location where Home Assistant is running
  name: Name
  # Location required to calculate the time the sun rises and sets
  latitude: 59.4118
  longitude: 17.6167
  # Impacts weather/sunrise data (altitude above sea level in meters)
  elevation: 15
  # metric for Metric, imperial for Imperial
  unit_system: metric
  # Pick yours from here: http://en.wikipedia.org/wiki/List_of_tz_database_time_zones
  time_zone: Europe/Stockholm
  # Customization file
  customize: !include customize.yaml
 
hassio:

# Show links to resources in log and frontend
#introduction:

# Enables the frontend
frontend:

# Enables configuration UI
config:

http:
  # Secrets are defined in the file secrets.yaml
  # api_password: !secret http_password
  # Uncomment this if you are using SSL/TLS, running in Docker container, etc.
  # base_url: example.duckdns.org:8123

# Checks for available updates
# Note: This component will send some information about your system to
# the developers to assist with development of Home Assistant.
# For more information, please see:
# https://home-assistant.io/blog/2016/10/25/explaining-the-updater/
updater:
  # Optional, allows Home Assistant developers to focus on popular components.
  # include_used_components: true

# Discover some devices automatically
# discovery:

# Allows you to issue voice commands from the frontend in enabled browsers
#conversation:

# Enables support for tracking state changes over time
history:

# View all events in a logbook
#logbook:

# Enables a map showing the location of tracked devices
#map:

# Track the sun
sun:

# Weather prediction
sensor:
  - platform: yr
    monitored_conditions:
      - symbol
      - humidity
      - temperature
  - platform: time_date
    display_options:
      - 'time'
      - 'time_utc'

# Text to speech
#tts:
#  - platform: google

# Cloud
#cloud:

group: !include groups.yaml
automation: !include automations.yaml
script: !include scripts.yaml

panel_iframe:
  configurator:
    title: Configurator
    icon: mdi:wrench
    url: http://hassio.local:3218
   
light:
  platform: mqtt
  name: 'OutsideGuest'
  state_topic: 'fasad/light1/status'
  command_topic: 'fasad/light1/switch'
  optimistic: false
 
switch:
  platform: rpi_gpio
  ports:
    11: Fan
    12: Light

scene:
  - name: OutsideOn
    entities:
      light.OutsideGuest: on
      switch.fan: on
  - name: OutsideOff
    entities:
      light.OutsideGuest: off
      switch.fan: off
 
mqtt:
  password: Password


automations.yaml

Code Select


- id: '1534879696217'
  alias: Utomhus T?nd
  trigger:
  - platform: sun
    event: sunset
  - platform: time
    at: '05:10:00'
  action:
    service: scene.turn_on
    entity_id: scene.OutsideOn
- id: '1534879764580'
  alias: Utomhus Sl?ck
  trigger:
  - platform: sun
    event: sunrise
  - platform: time
    at: '23:00:00'
  action:
    service: scene.turn_on
    entity_id: scene.OutsideOff


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