v1.9.13: Capteur CO2 Senseair S88 - scaffolding

Table data_S88, flag config S88 + port configurable S88_port
(default /dev/ttyAMA5), service/timer systemd 10s, carte
sensors.html, endpoint launcher.php, toggle admin.html.

read_co2() est un stub NotImplementedError en attente du datasheet.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

S88/write_data.py

@@ -0,0 +1,81 @@
+'''
+Script to get CO2 values from Senseair S88 sensor and write to database
+/usr/bin/python3 /var/www/nebuleair_pro_4g/S88/write_data.py
+
+Port and protocol details come from config_table (key S88_port).
+The actual sensor read protocol is implemented in read_co2() below.
+'''
+
+import serial
+import sqlite3
+import sys
+
+DB_PATH = "/var/www/nebuleair_pro_4g/sqlite/sensors.db"
+DEFAULT_PORT = "/dev/ttyAMA5"
+BAUDRATE = 9600
+
+
+def get_config(cursor, key, default):
+    cursor.execute("SELECT value FROM config_table WHERE key = ?", (key,))
+    row = cursor.fetchone()
+    return row[0] if row else default
+
+
+def read_co2(ser):
+    # TODO: implement the Senseair S88 read protocol once the datasheet is provided.
+    # Expected return: integer CO2 concentration in ppm, or None on failure.
+    raise NotImplementedError("Senseair S88 read protocol not implemented yet")
+
+
+def main():
+    conn = sqlite3.connect(DB_PATH)
+    cursor = conn.cursor()
+
+    port = get_config(cursor, "S88_port", DEFAULT_PORT)
+
+    try:
+        ser = serial.Serial(
+            port=port,
+            baudrate=BAUDRATE,
+            parity=serial.PARITY_NONE,
+            stopbits=serial.STOPBITS_ONE,
+            bytesize=serial.EIGHTBITS,
+            timeout=1,
+        )
+    except Exception as e:
+        print(f"Error opening serial port {port}: {e}")
+        conn.close()
+        sys.exit(1)
+
+    try:
+        co2 = read_co2(ser)
+        if co2 is None:
+            print("Failed to read CO2 from S88.")
+            return
+
+        co2_ppm = int(round(co2))
+
+        cursor.execute("SELECT last_updated FROM timestamp_table LIMIT 1")
+        row = cursor.fetchone()
+        rtc_time_str = row[0]
+
+        cursor.execute(
+            "INSERT INTO data_S88 (timestamp, CO2) VALUES (?, ?)",
+            (rtc_time_str, co2_ppm),
+        )
+        conn.commit()
+        print(f"CO2: {co2_ppm} ppm (saved at {rtc_time_str})")
+    except NotImplementedError as e:
+        print(f"S88 not ready: {e}")
+    except Exception as e:
+        print(f"S88 error: {e}")
+    finally:
+        try:
+            ser.close()
+        except Exception:
+            pass
+        conn.close()
+
+
+if __name__ == "__main__":
+    main()