From c7b4795085150eeab83b92c5764d859d32c451f1 Mon Sep 17 00:00:00 2001
From: Mika <kontakt@donau2space.de>
Date: Sun, 5 Jul 2026 02:07:33 +0000
Subject: [PATCH] Add logger_setup/src/logger_setup/core.py

---
 logger_setup/src/logger_setup/core.py | 97 +++++++++++++++++++++++++++
 1 file changed, 97 insertions(+)
 create mode 100644 logger_setup/src/logger_setup/core.py

diff --git a/logger_setup/src/logger_setup/core.py b/logger_setup/src/logger_setup/core.py
new file mode 100644
index 0000000..f43b7e8
--- /dev/null
+++ b/logger_setup/src/logger_setup/core.py
@@ -0,0 +1,97 @@
+import csv
+import time
+import os
+from datetime import datetime
+from pathlib import Path
+from dataclasses import dataclass, asdict
+from typing import List, Dict, Any, Optional
+
+try:
+    import adafruit_dht
+    from adafruit_bmp280 import Adafruit_BMP280_I2C
+    import adafruit_tsl2591
+    import board
+    import busio
+except ImportError:
+    adafruit_dht = None
+    Adafruit_BMP280_I2C = None
+    adafruit_tsl2591 = None
+    board = None
+    busio = None
+
+
+def _get_sensors():
+    if board is None or adafruit_dht is None:
+        return None, None, None
+    
+    i2c = busio.I2C(board.SCL, board.SDA)
+    dht_sensor = adafruit_dht.DHT22(board.D4)
+    bmp_sensor = Adafruit_BMP280_I2C(i2c)
+    tsl_sensor = adafruit_tsl2591.TSL2591(i2c)
+    return dht_sensor, bmp_sensor, tsl_sensor
+
+
+@dataclass
+class SensorReading:
+    timestamp: datetime
+    temperature: float
+    humidity: float
+    pressure: float
+    lux: float
+
+    def to_dict(self) -> Dict[str, Any]:
+        return {
+            'timestamp': self.timestamp.isoformat(),
+            'temperature_c': self.temperature,
+            'humidity_percent': self.humidity,
+            'pressure_hpa': self.pressure,
+            'lux': self.lux
+        }
+
+
+_readings: List[SensorReading] = []
+
+
+def _read_sensors() -> Optional[SensorReading]:
+    try:
+        dht_sensor, bmp_sensor, tsl_sensor = _get_sensors()
+        if not all([dht_sensor, bmp_sensor, tsl_sensor]):
+            return None
+        temp_c = float(dht_sensor.temperature)
+        humidity = float(dht_sensor.humidity)
+        pressure = float(bmp_sensor.pressure)
+        lux = float(tsl_sensor.lux)
+        return SensorReading(
+            timestamp=datetime.now(),
+            temperature=temp_c,
+            humidity=humidity,
+            pressure=pressure,
+            lux=lux
+        )
+    except Exception:
+        return None
+
+
+def start_logging(interval: float) -> None:
+    assert isinstance(interval, (int, float)) and interval > 0, 'Interval must be positive number.'
+    print(f"Starting logging with interval {interval}s. Press Ctrl+C to stop.")
+    while True:
+        reading = _read_sensors()
+        if reading:
+            _readings.append(reading)
+            print(f"Logged at {reading.timestamp.isoformat()} - T={reading.temperature:.2f}C H={reading.humidity:.2f}% P={reading.pressure:.2f}hPa L={reading.lux:.2f}lx")
+        time.sleep(interval)
+
+
+def save_to_csv(filename: str) -> None:
+    assert isinstance(filename, str) and len(filename.strip()) > 0, 'Filename must be non-empty string.'
+    path = Path(filename)
+    os.makedirs(path.parent, exist_ok=True)
+
+    with path.open('w', newline='') as csvfile:
+        fieldnames = ['timestamp', 'temperature_c', 'humidity_percent', 'pressure_hpa', 'lux']
+        writer = csv.DictWriter(csvfile, fieldnames=fieldnames)
+        writer.writeheader()
+        for r in _readings:
+            writer.writerow(r.to_dict())
+    print(f"Saved {_readings.__len__()} readings to {filename}")
\ No newline at end of file