fixed sql query to get latest update in init

examples/datalogger.py

@@ -119,7 +119,7 @@ class DataLogger:
         c.execute(sql) 
         self.db.commit()
                 
-        sql = "SELECT last_upload, last_recno FROM datalogger WHERE campbell_id = ?" 
+        sql = "SELECT last_upload, last_recno FROM datalogger WHERE campbell_id = ? ORDER BY ID DESC LIMIT 1" 
         c.execute(sql, (self.dbid,))
         
         rslt = c.fetchone()