v1.5.2: page capteurs NPM via get_data_modbus_v3.py --dry-run

- NPM: mode --dry-run (print JSON sans ecriture en base)
- launcher.php: endpoint npm appelle get_data_modbus_v3.py --dry-run
- sensors.html: affichage PM + temp + humidite + status NPM decode
- Suppression unite ug/m3 sur le champ status

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

NPM/get_data_modbus_v3.py

@@ -40,6 +40,9 @@ import crcmod
 import sqlite3
 import time
 
+# Dry-run mode: print JSON output without writing to database
+dry_run = "--dry-run" in sys.argv
+
 # Connect to the SQLite database
 conn = sqlite3.connect("/var/www/nebuleair_pro_4g/sqlite/sensors.db")
 cursor = conn.cursor()
@@ -207,15 +210,29 @@ except Exception as e:
     # Variables already set to -1 at the beginning
 
 finally:
-    # Always save data to database, even if all values are -1
-    cursor.execute('''
-    INSERT INTO data_NPM_5channels (timestamp,PM_ch1, PM_ch2, PM_ch3, PM_ch4, PM_ch5) VALUES (?,?,?,?,?,?)'''
-    , (rtc_time_str, channel_1, channel_2, channel_3, channel_4, channel_5))
+    if dry_run:
+        # Print JSON output without writing to database
+        result = {
+            "PM1": pm1_10s,
+            "PM25": pm25_10s,
+            "PM10": pm10_10s,
+            "temperature": temperature,
+            "humidity": relative_humidity,
+            "npm_status": npm_status,
+            "npm_status_hex": f"0x{npm_status:02X}"
+        }
+        print(json.dumps(result))
+    else:
+        # Always save data to database, even if all values are 0
+        cursor.execute('''
+        INSERT INTO data_NPM_5channels (timestamp,PM_ch1, PM_ch2, PM_ch3, PM_ch4, PM_ch5) VALUES (?,?,?,?,?,?)'''
+        , (rtc_time_str, channel_1, channel_2, channel_3, channel_4, channel_5))
 
-    cursor.execute('''
-    INSERT INTO data_NPM (timestamp,PM1, PM25, PM10, temp_npm, hum_npm, npm_status) VALUES (?,?,?,?,?,?,?)'''
-    , (rtc_time_str, pm1_10s, pm25_10s, pm10_10s, temperature, relative_humidity, npm_status))
+        cursor.execute('''
+        INSERT INTO data_NPM (timestamp,PM1, PM25, PM10, temp_npm, hum_npm, npm_status) VALUES (?,?,?,?,?,?,?)'''
+        , (rtc_time_str, pm1_10s, pm25_10s, pm10_10s, temperature, relative_humidity, npm_status))
+
+        # Commit and close the connection
+        conn.commit()
 
-    # Commit and close the connection
-    conn.commit()
     conn.close()