update

RTC/save_to_db.py

@@ -9,6 +9,35 @@ Script to read time from RTC module and save it to DB
 I2C connection
 Address 0x68
 /usr/bin/python3 /var/www/nebuleair_pro_4g/RTC/save_to_db.py
+
+This need to be run as a system service
+
+--> sudo nano /etc/systemd/system/rtc_save_to_db.service
+
+⬇️
+[Unit]
+Description=RTC Save to DB Script
+After=network.target
+
+[Service]
+ExecStart=/usr/bin/python3 /var/www/nebuleair_pro_4g/RTC/save_to_db.py
+Restart=always
+RestartSec=1
+User=root
+WorkingDirectory=/var/www/nebuleair_pro_4g
+StandardOutput=append:/var/www/nebuleair_pro_4g/logs/rtc_save_to_db.log
+StandardError=append:/var/www/nebuleair_pro_4g/logs/rtc_save_to_db_errors.log
+
+[Install]
+WantedBy=multi-user.target
+⬆️
+
+
+sudo systemctl daemon-reload
+sudo systemctl start rtc_save_to_db.service
+
+sudo systemctl status rtc_save_to_db.service
+
 '''
 import smbus2
 import time
@@ -16,16 +45,15 @@ import json
 from datetime import datetime
 import sqlite3
 
-# Connect to (or create if not existent) the database
-conn = sqlite3.connect("/var/www/nebuleair_pro_4g/sqlite/sensors.db")
-cursor = conn.cursor()
-
 # DS3231 I2C address
 DS3231_ADDR = 0x68
 
 # Registers for DS3231
 REG_TIME = 0x00
 
+# Connect to (or create if not existent) the database
+DB_PATH = "/var/www/nebuleair_pro_4g/sqlite/sensors.db"
+
 def bcd_to_dec(bcd):
     return (bcd // 16 * 10) + (bcd % 16)
 
@@ -46,44 +74,53 @@ def read_time(bus):
 def main():
     # Read RTC time
     bus = smbus2.SMBus(1)
-    # Try to read RTC time
-    rtc_time = read_time(bus)
-    
-    # Get current system time
-    system_time = datetime.now() #local
-    utc_time = datetime.utcnow() #UTC
 
-    # If RTC is not connected, set default message
-    # Calculate time difference (in seconds) if RTC is connected
-    if rtc_time:
-        rtc_time_str = rtc_time.strftime('%Y-%m-%d %H:%M:%S')
-        time_difference = int((utc_time - rtc_time).total_seconds())  # Convert to int
-    else:
-        rtc_time_str = "not connected"
-        time_difference = "N/A"  # Not applicable
+    while True:
+        # Open a new database connection inside the loop to prevent connection loss
+        conn = sqlite3.connect(DB_PATH)
+        cursor = conn.cursor()
 
-    # Print both times
-    #print(f"RTC module Time:    {rtc_time.strftime('%Y-%m-%d %H:%M:%S')}")
-    #print(f"Sys local Time:     {system_time.strftime('%Y-%m-%d %H:%M:%S')}")
-    #print(f"Sys UTC Time:       {utc_time.strftime('%Y-%m-%d %H:%M:%S')}")
+        # Try to read RTC time
+        rtc_time = read_time(bus)
+        # Get current system time
+        system_time = datetime.now() #local
+        utc_time = datetime.utcnow() #UTC
 
-     # Create JSON output
-    time_data = {
-        "rtc_module_time":rtc_time_str,
-        "system_local_time": system_time.strftime('%Y-%m-%d %H:%M:%S'),
-        "system_utc_time": utc_time.strftime('%Y-%m-%d %H:%M:%S'),
-        "time_difference_seconds": time_difference
-    }
+        # If RTC is not connected, set default message
+        # Calculate time difference (in seconds) if RTC is connected
+        if rtc_time:
+            rtc_time_str = rtc_time.strftime('%Y-%m-%d %H:%M:%S')
+            time_difference = int((utc_time - rtc_time).total_seconds())  # Convert to int
+        else:
+            rtc_time_str = "not connected"
+            time_difference = "N/A"  # Not applicable
 
-    #print(json.dumps(time_data, indent=4))
+        # Print both times
+        #print(f"RTC module Time:    {rtc_time.strftime('%Y-%m-%d %H:%M:%S')}")
+        #print(f"Sys local Time:     {system_time.strftime('%Y-%m-%d %H:%M:%S')}")
+        #print(f"Sys UTC Time:       {utc_time.strftime('%Y-%m-%d %H:%M:%S')}")
 
-    cursor.execute("UPDATE timestamp_table SET last_updated = ? WHERE id = 1", (rtc_time_str,))
+        # Create JSON output
+        time_data = {
+            "rtc_module_time":rtc_time_str,
+            "system_local_time": system_time.strftime('%Y-%m-%d %H:%M:%S'),
+            "system_utc_time": utc_time.strftime('%Y-%m-%d %H:%M:%S'),
+            "time_difference_seconds": time_difference
+        }
 
-    # Commit and close the connection
-    conn.commit()
-    conn.close()
+        #print(json.dumps(time_data, indent=4))
 
-    #print("Sensor data saved successfully!")
+         # Save to database
+        try:
+            cursor.execute("UPDATE timestamp_table SET last_updated = ? WHERE id = 1", (rtc_time_str,))
+            conn.commit()
+            #print("Sensor data saved successfully!")
+
+        except sqlite3.Error as e:
+            print(f"Database error: {e}")
+
+        conn.close()  # Close connection to avoid database locking issues
+        time.sleep(1)  # Wait for 1 second before reading again
 
 
 if __name__ == "__main__":