initial commit

.gitignore

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+.idea

Readme.md

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+
+# Introduction
+
+Expose BME680 sensor readings to Apple Homekit.
+
+## Installing
+
+Ensure you are the `pi` user. Clone the repo in home and then install requirements. 
+
+```bash
+cd /home/pi && git clone git@github.com:dnutiu/bme680-homekit.git && cd bme680-homekit
+sudo apt-get install libavahi-compat-libdnssd-dev
+pip3 install -r requirements.txt
+```
+
+Run the program once to pair it with your ios. ex:
+
+```bash
+python3 main.py 
+Setup payload: X-HM://0023K50QET2YB
+Scan this code with your HomeKit app on your iOS device:
+
+Or enter this code in your HomeKit app on your iOS device: 053-86-998
+
+```
+
+Copy the systemd service.
+
+```bash
+sudo cp bme680-homekit.service /etc/systemd/system
+sudo systemctl status bme680-homekit
+```
+
+```
+● bme680-homekit.service - Bme680 Homekit service
+     Loaded: loaded (/etc/systemd/system/bme680-homekit.service; disabled; vendor preset: enabled)
+     Active: inactive (dead)
+```
+
+Start the service
+```bash
+sudo systemctl start bme680-homekit
+sudo systemctl status bme680-homekit
+```
+
+```
+● bme680-homekit.service - Bme680 Homekit service
+     Loaded: loaded (/etc/systemd/system/bme680-homekit.service; disabled; vendor preset: enabled)
+     Active: active (running) since Mon 2022-02-21 20:10:30 GMT; 935ms ago
+   Main PID: 1722 (python3)
+      Tasks: 1 (limit: 780)
+        CPU: 895ms
+     CGroup: /system.slice/bme680-homekit.service
+             └─1722 /usr/bin/python3 /home/pi/bme680-homekit/main.py
+
+Feb 21 20:10:30 raspberrypi systemd[1]: Started Bme680 Homekit service.
+```

bme680-homekit.service

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+[Unit]
+Description=Bme680 Homekit service
+After=local-fs.target network-online.target
+
+[Service]
+User=pi
+ExecStart=/usr/bin/python3 /home/pi/bme680-homekit/main.py
+
+[Install]
+WantedBy=multi-user.target

main.py

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+import signal
+from pyhap.accessory import Accessory, Bridge
+import bme680
+from pyhap.accessory_driver import AccessoryDriver
+from pyhap.const import CATEGORY_SENSOR
+
+
+class Bme680Sensor(Accessory):
+    """Implementation of a mock temperature sensor accessory."""
+
+    category = CATEGORY_SENSOR  # This is for the icon in the iOS Home app.
+
+    def __init__(self, *args, **kwargs):
+        """Here, we just store a reference to the current temperature characteristic and
+        add a method that will be executed every time its value changes.
+        """
+        # If overriding this method, be sure to call the super's implementation first.
+        super().__init__(*args, **kwargs)
+
+        self.sensor = bme680.BME680(bme680.I2C_ADDR_PRIMARY)
+
+        self.sensor.set_humidity_oversample(bme680.OS_2X)
+        self.sensor.set_pressure_oversample(bme680.OS_4X)
+        self.sensor.set_temperature_oversample(bme680.OS_8X)
+        self.sensor.set_filter(bme680.FILTER_SIZE_3)
+
+        # Add the services that this Accessory will support with add_preload_service here
+        temp_service = self.add_preload_service('TemperatureSensor')
+        humidity_service = self.add_preload_service('HumiditySensor')
+
+        self.temp_value = temp_service.get_characteristic('CurrentTemperature')
+        self.humidity_value = humidity_service.get_characteristic("CurrentRelativeHumidity")
+
+    @Accessory.run_at_interval(3)
+    def run(self):
+        """We override this method to implement what the accessory will do when it is
+        started.
+
+        We set the current temperature to a random number. The decorator runs this method
+        every 3 seconds.
+        """
+        if self.sensor.get_sensor_data():
+            self.temp_value.set_value(self.sensor.data.temperature)
+            self.humidity_value.set_value(self.sensor.data.humidity)
+
+    def stop(self):
+        """We override this method to clean up any resources or perform final actions, as
+        this is called by the AccessoryDriver when the Accessory is being stopped.
+        """
+        print('Stopping accessory.')
+
+
+def get_bridge(accessory_driver):
+    bridge = Bridge(accessory_driver, 'Bridge')
+    bridge.add_accessory(Bme680Sensor(accessory_driver, 'Sensor'))
+    return bridge
+
+
+if __name__ == '__main__':
+    driver = AccessoryDriver(port=51826, persist_file="/home/pi/bme680-homekit/accessory.state")
+    driver.add_accessory(accessory=get_bridge(driver))
+    signal.signal(signal.SIGTERM, driver.signal_handler)
+    driver.start()

requirements.txt

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+bme680==1.1.1
+HAP-python==4.4.0