57 lines
No EOL
1.2 KiB
Python
57 lines
No EOL
1.2 KiB
Python
import time
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import json
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import os
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import board
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import digitalio
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json_file = "ky018_data.json"
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MAX_ENTRIES = 3000
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light_pin = digitalio.DigitalInOut(board.D17)
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light_pin.direction = digitalio.Direction.INPUT
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data_template = {
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"id": "sensor_004",
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"type": "light",
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"unit": "state",
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"reading": []
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}
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def load_data():
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if os.path.exists(json_file):
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with open(json_file, 'r', encoding='utf-8') as f:
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return json.load(f)
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else:
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return data_template.copy()
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def save_data(data):
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with open(json_file, 'w', encoding='utf-8') as f:
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json.dump(data, f, indent=4, ensure_ascii=False)
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def capture_and_store(state):
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timestamp = int(time.time())
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data = load_data()
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data["reading"].append({
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"ts": timestamp,
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"state": state
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})
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if len(data["reading"]) > MAX_ENTRIES:
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data["reading"] = data["reading"][-MAX_ENTRIES:]
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save_data(data)
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try:
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while True:
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if light_pin.value:
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light_state = "hell"
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else:
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light_state = "dunkel"
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print(f"Lichtzustand: {light_state}")
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capture_and_store(light_state)
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time.sleep(2)
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except KeyboardInterrupt:
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print("Programm beendet.") |