initial commit

.ruby-version

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+2.7.4

Gemfile

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+# frozen_string_literal: true
+
+source 'https://rubygems.org'
+
+gem 'mqtt'
+gem 'rubocop'

Gemfile.lock

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+GEM
+  remote: https://rubygems.org/
+  specs:
+    ast (2.4.2)
+    mqtt (0.5.0)
+    parallel (1.21.0)
+    parser (3.0.2.0)
+      ast (~> 2.4.1)
+    rainbow (3.0.0)
+    regexp_parser (2.1.1)
+    rexml (3.2.5)
+    rubocop (1.22.1)
+      parallel (~> 1.10)
+      parser (>= 3.0.0.0)
+      rainbow (>= 2.2.2, < 4.0)
+      regexp_parser (>= 1.8, < 3.0)
+      rexml
+      rubocop-ast (>= 1.12.0, < 2.0)
+      ruby-progressbar (~> 1.7)
+      unicode-display_width (>= 1.4.0, < 3.0)
+    rubocop-ast (1.12.0)
+      parser (>= 3.0.1.1)
+    ruby-progressbar (1.11.0)
+    unicode-display_width (2.1.0)
+
+PLATFORMS
+  ruby
+
+DEPENDENCIES
+  mqtt
+  rubocop
+
+BUNDLED WITH
+   2.1.4

data.csv

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+2021-10-19 22:22:08 +0200,Test Sensor,62.97,26.99,972,100,3195,46

logger.rb

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+# frozen_string_literal: true
+
+require 'rubygems'
+require 'mqtt'
+require 'json'
+require 'CSV'
+
+# MQTT Server configuration
+SERVER = '192.168.178.48'
+
+# Sensor configuration
+sensors = {
+  'zigbee2mqtt/0x00158d00073a7ba8': {
+    'name': 'Test Sensor',
+    'min_humidity': 61,
+    'max_humidity': 64
+  }
+}
+
+# Connect to the MQTT broker
+MQTT::Client.connect(SERVER) do |client|
+  # For each sensor
+  sensors.each_key do |sensor_topic|
+    sensor = sensors[sensor_topic]
+    # Subscribe its topic
+    client.get(sensor_topic.to_s) do |topic, message|
+      # Log the output
+      puts "#{sensor[:name]}: #{message}"
+
+      payload = JSON.parse(message)
+
+      # Log payload in a csv file
+      CSV.open('data.csv', 'wb') do |csv|
+        csv << [Time.now,
+                sensor[:name],
+                topic,
+                payload['humidity'],
+                payload['temperature'],
+                payload['pressure'],
+                payload['battery'],
+                payload['voltage'],
+                payload['linkquality']]
+      end
+    end
+  end
+end