travisshears/balcony_weather_station
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split code up into modules and add pubsub and timers

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Travis Shears 2023-08-10 08:11:39 +02:00
parent 05c470197f
commit 001f99db7c
Signed by: travisshears
GPG key ID: D4C2E4DFAB8BABF8
7 changed files with 228 additions and 137 deletions
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CIRCUITPY/weather_station/bme280.py Executable file
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import board
import busio
from adafruit_bme280 import basic as adafruit_bme280
class BME280():
mqtt_state_topic = "homeassistant/sensor/balcony_weather_station/bme_280_001/state"
mqtt_config_topic_temperature = "homeassistant/sensor/balcony_weather_station/bme_280_001_temp/config"
mqtt_config_topic_humidity = "homeassistant/sensor/balcony_weather_station/bme_280_001_humi/config"
mqtt_config_topic_pressure = "homeassistant/sensor/balcony_weather_station/bme_280_001_pres/config"
config_msg_temperature = """{
"name": "BEM 280 Temperature",
"device_class": "temperature",
"unit_of_measurement": "°C",
"value_template": "{{ value_json.temperature}}",
"state_topic": "homeassistant/sensor/balcony_weather_station/bme_280_001/state",
"unique_id": "balcony_weather_station_bme_280_001_temperature",
"device": {
"identifiers": "balcony_weather_station_001",
"name": "Balcony Weather Station"
}
}"""
config_msg_pressure = """{
"name": "BEM 280 Pressure",
"device_class": "pressure",
"unit_of_measurement": "hPa",
"value_template": "{{ value_json.pressure}}",
"state_topic": "homeassistant/sensor/balcony_weather_station/bme_280_001/state",
"unique_id": "balcony_weather_station_bme_280_001_pressure",
"device": {
"identifiers": "balcony_weather_station_001",
"name": "Balcony Weather Station"
}
}"""
config_msg_humidity = """{
"name": "BEM 280 Humidity",
"device_class": "humidity",
"unit_of_measurement": "%",
"value_template": "{{ value_json.humidity}}",
"state_topic": "homeassistant/sensor/balcony_weather_station/bme_280_001/state",
"unique_id": "balcony_weather_station_bme_280_001_humidity",
"device": {
"identifiers": "balcony_weather_station_001",
"name": "Balcony Weather Station"
}
}"""
def __init__(self, pubsub):
self.pubsub = pubsub
i2c = busio.I2C(scl=board.GP15, sda=board.GP14)
self.bme280 = adafruit_bme280.Adafruit_BME280_I2C(i2c, 0x76)
self.bme280.sea_level_pressure = 1016 # value from https://metar-taf.com/EDDM
self.pubsub.publish('mqtt_pub', {
'topic': self.mqtt_config_topic_temperature,
'msg': self.config_msg_temperature
})
self.pubsub.publish('mqtt_pub', {
'topic': self.mqtt_config_topic_humidity,
'msg': self.config_msg_humidity
})
self.pubsub.publish('mqtt_pub', {
'topic': self.mqtt_config_topic_pressure,
'msg': self.config_msg_pressure
})
self.pubsub.subscribe('tick 120', self._send)
def _send(self, _):
msg = f"""{{
"temperature": {self.bme280.temperature:.1f},
"humidity": {self.bme280.relative_humidity:.1f},
"pressure": {self.bme280.pressure:.1f}
}}"""
self.pubsub.publish('mqtt_pub', {'topic': self.mqtt_state_topic, 'msg': msg})