13c266d694
Vérif terrain sur pro100 : à 100 kHz le CCS811 renvoie des valeurs corrompues 0x8000 (32768) par clock-stretching, et le modèle oneshot-reset-toutes-les-10s ne donne que le 1er échantillon post-init (garbage). Refonte : - CCS811/daemon.py: service long-running (Type=simple, Restart=always). Init 1x, boucle lecture/écriture 10s, filtre eCO2 dans [400,8192], re-init auto sur erreurs I2C répétées. Remplace write_data.py (supprimé). - CCS811/get_data.py: lit la dernière ligne data_CCS811 au lieu du capteur (évite la collision I2C avec le daemon -> corruption observée). - setup_services.sh: service daemon + self-heal suppression de l'ancien .timer; activation hors boucle timers. - launcher.php: .timer -> .service (map statut + allowedServices x2). - update_firmware.sh: redémarre le daemon à l'OTA. - doc: README (archi daemon + I2C 10kHz confirmé requis), CLAUDE.md, changelog. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
41 lines
1.2 KiB
Python
41 lines
1.2 KiB
Python
'''
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Live value for the web "Get Data" button (CCS811 air-quality sensor).
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Prints {"eCO2": <ppm>, "TVOC": <ppb>, "timestamp": <str>} or {"error": "<msg>"}.
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IMPORTANT: this does NOT read the I2C sensor. The CCS811 is owned by the
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long-running daemon (CCS811/daemon.py); opening the bus here would collide with
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it and corrupt the sensor. Instead we return the most recent row the daemon
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stored in data_CCS811. TVOC is the primary measurement.
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Usage: /usr/bin/python3 /var/www/nebuleair_pro_4g/CCS811/get_data.py
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'''
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import json
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import sqlite3
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DB_PATH = "/var/www/nebuleair_pro_4g/sqlite/sensors.db"
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def main():
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try:
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conn = sqlite3.connect(DB_PATH, timeout=5)
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cursor = conn.cursor()
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cursor.execute(
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"SELECT timestamp, eCO2, TVOC FROM data_CCS811 ORDER BY timestamp DESC LIMIT 1"
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)
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row = cursor.fetchone()
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conn.close()
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except Exception as e:
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print(json.dumps({"error": f"DB read error: {e}"}))
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return
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if not row:
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print(json.dumps({"error": "No CCS811 data yet (daemon warming up?)"}))
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return
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print(json.dumps({"timestamp": row[0], "eCO2": int(row[1]), "TVOC": int(row[2])}))
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if __name__ == "__main__":
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main()
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