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--- app-hotes:wwan-statistics [2025/11/24 16:22] – [3. Set up the SDK script on the router] gray
+++ app-hotes:wwan-statistics [2025/11/24 17:16] (current) – [4. Important settings in the SDK script] gray
@@ Line 99: / Line 99: @@
 ----
+The “check_data_volume.are” script can be downloaded via the “show code” link.
 ++++show code|
 <code – check_data_volume.are>
 /* DESC: This script resets the statistics value of the WWAN1 module once a month.
  *       If the data volume exceeds 50 percent, 75 percent, 90 percent, or
@@ Line 117: / Line 112: @@
  */
+release_point = 0;
+release_point_alert_email = 1;
+release_point_alert2_email = 1;
+alert2_value = 0;
+release_point_info_email = 1;
+info_value = 0;
+release_point_info2_email = 1;
+info2_value = 0;
+######################################################################
+###########  Please only make changes to the script here   ###########
+######################################################################
+interval  = 1200;    # The waiting time for the next run.  The value is given in seconds.  <  20 minutes >
+datavolume = 30000000000;  # Enter the data volume in bytes here.  That's one gigabyte: 1 000 000 000  < 30 GBytes >
+to = "<mail-address>";  # Email address for the alert and info Email
+sms_number = "<SMS-number>"; # SMS Number for alert SMS 100 percent
+                                                                                     # *** 100 percent alert all 20 minutes ***
+alert2_value_time = 18;  #  The interval time multiplied by the alert2_value_time value  < 1200 sec * 18 =  6 hours >  90 percent
+info_value_time = 36;    # The interval time multiplied by the info_value_time value     < 1200 sec * 36 = 12 hours >  75 percent
+info2_value_time = 72;    # The interval time multiplied by the info_value_time value    < 1200 sec * 72 = 24 hours >  50 percent
+######################################################################################################
+DEBUG=false;  # Enable debugging with true or disable with false
+######################################################################################################
+printf("The SDK script is started\n");
+while (true) {
+ year = strftime("%Y",localtime(time()));
+ year = (int) year;
+ if(DEBUG)printf("Current year: %s\n",year);
+ month = strftime("%m",localtime(time()));
+ month = (int) month;
+ if(DEBUG)printf("Current month: %s\n",month);
+ if (month == 2) {
+   ## leap year check
+   if ((year % 400 == 0) || (year % 100 != 0 && year % 4 == 0)){
+     if(DEBUG)printf("Number of days in this month: 29\n");
+     number_of_days = 29;
+   } else {
+       if(DEBUG)printf("Number of days in this month: 28\n");
+       number_of_days = 28;
+     }
+ } else if (month == 4 || month == 6 || month == 9 || month == 11){
+          if(DEBUG)printf("Number of days in this month: 30\n");
+          number_of_days = 30;
+        } else {
+            if(DEBUG)printf("Number of days in this month: 31\n");
+            number_of_days = 31;
+          }
+ current_days = strftime("%d",localtime(time()));
+ current_days = (int) current_days;
+ if(DEBUG)printf("Current days: %s\n",current_days);
+ if (current_days == number_of_days){
+   if(DEBUG)printf("Current days and number of days in this month are the same\n");
+   if (release_point == 0) {
+   ret = nb_reset_statistics ("WANLINK1");
+   if(DEBUG)printf("The statistics are reset\n");
+   release_point = 1;
+   } else {
+       if(DEBUG)printf("The release point is not Null\n");
+       if(DEBUG)printf("The statistics are not reset\n");
+     }
+ } else {
+     if(DEBUG)printf("Current days and number of days in this month are not the same\n");
+     if(DEBUG)printf("The statistics are not reset\n");
+     release_point = 0;
+   }
+ status = nb_status("wan");
+ date_since = struct_get(status, "WANLINK1_DATA_SINCE");
+ date_download = struct_get(status, "WANLINK1_DATA_DOWNLOADED");
+ if(DEBUG)printf("Time of data collection: %s\n",date_since);
+ if(DEBUG)printf("%s bytes have already been downloaded via the mobile connection\n",date_download);
+ temp = date_download;
+ suffix=mkarray("Byte", "KByte", "MByte", "GByte", "TByte");
+ (int) i = 0;
+ count = date_download;
+ while (count >= 1024 && i < 4) {
+     count = (float) count;
+     count /= 1024;
+     i++;
+ }
+ system = nb_status("system");
+ serial_number = struct_get(system , "SERIAL_NUMBER");
+ if(DEBUG)printf("The Serial Number form the Router: %s\n",serial_number);
+ config = nb_status("config");
+ network_hostname = struct_get(config , "network.hostname");
+ if(DEBUG)printf("The Network Hostname form the Router: %s\n",network_hostname);
+ if(DEBUG)printf("%.2f %s\n", count, suffix[i]);
+ if(DEBUG)printf("The raw data: %s\n",temp);
+ percentage_value = temp / (datavolume / 100);
+ if(DEBUG)printf("%s percent of the data volume on the SIM card has been used up\n",percentage_value);
+ if (percentage_value > 100){
+   if(DEBUG)printf("The volume allowance on the SIM card has been completely used up\n");
+   if(DEBUG)printf("The mobile connection will be throttled to a data speed of 64 kBits/s\n");
+   if (release_point_alert_email == 1){
+     msg = sprintf("The volume allowance on the SIM card has been completely used up. The mobile connection will be throttled to a data speed of 64 kBits/s");
+     subj = sprintf("Data volume at 100 percent  Serial-Number:%s Network-Hostname:%s",serial_number ,network_hostname);
+     ret = nb_email_send(to, subj , msg);
+     sleep(1);
+     if (ret == 0){
+       if(DEBUG)printf("Successfully sent E-Mail to %s\n", to);
+       release_point_alert_email = 0;
+     } else {
+         if(DEBUG)printf("Unable to send E-Mail\n");
+         nb_syslog("Unable to send E-Mail\n");
+         release_point_alert_email = 1;
+       }
+     id = nb_sms_send(sms_number , subj);
+     sleep(1);
+     if (id){
+       if(DEBUG)printf("SMS to %s (ID %s) has been spooled\n",sms_number, id );
+       release_point_alert_email = 0;
+     } else {
+         if(DEBUG)printf("Unable to send SMS to %s\n",sms_number);
+         nb_syslog("Unable to send SMS\n");
+         release_point_alert_email = 1;
+       }
+   }
+ } else if (percentage_value >= 90 && percentage_value < 100){
+          if(DEBUG)printf("90 percent of the SIM card's data allowance has been used.\nCurrent usage is %s percent\n",percentage_value);
+          alert2_value = alert2_value + 1;
+          if(DEBUG)printf("%s\n",alert2_value);
+          if (release_point_alert2_email == 1){
+            msg = sprintf("90 percent of the SIM card's data allowance has been used. Current usage is %s percent",percentage_value);
+            subj = sprintf("Data volume at 90 percent  Serial-Number:%s Network-Hostname:%s",serial_number ,network_hostname);
+            ret = nb_email_send(to, subj , msg);
+            sleep(1);
+            if (ret == 0){
+              if(DEBUG)printf("Successfully sent E-Mail to %s\n", to);
+              release_point_alert2_email = 0;
+              alert2_value = 0;
+              } else {
+                  if(DEBUG)printf("Unable to send E-Mail\n");
+                  nb_syslog("Unable to send E-Mail\n");
+                  release_point_alert2_email = 1;
+                }
+          }
+   } else if (percentage_value >= 75){
+            if(DEBUG)printf("Two-thirds of the SIM card's data allowance has been used.\nCurrent usage is %s percent\n",percentage_value);
+            info_value = info_value + 1;
+            if(DEBUG)printf("%s\n",info_value);
+            if (release_point_info_email == 1){
+              msg = sprintf("Two-thirds of the SIM card's data allowance has been used. Current usage is %s percent",percentage_value);
+              subj = sprintf("Data volume at 75 percent  Serial-Number:%s Network-Hostname:%s",serial_number ,network_hostname);
+              ret = nb_email_send(to, subj , msg);
+              sleep(1);
+              if (ret == 0){
+              if(DEBUG)printf("Successfully sent E-Mail to %s\n", to);
+              release_point_info_email = 0;
+              info_value = 0;
+              } else {
+                  if(DEBUG)printf("Unable to send E-Mail\n");
+                  nb_syslog("Unable to send E-Mail\n");
+                  release_point_info_email = 1;
+                }
+            }
+     } else if (percentage_value >= 50){
+              if(DEBUG)printf("Half of the SIM card's data allowance has been used.\nCurrent usage is %s percent\n",percentage_value);
+              info2_value = info2_value + 1;
+              if(DEBUG)printf("%s\n",info2_value);
+              if (release_point_info2_email == 1){
+                msg = sprintf("Half of the SIM card's data allowance has been used. Current usage is %s percent",percentage_value);
+                subj = sprintf("Data volume at 50 percent  Serial-Number:%s Network-Hostname:%s",serial_number ,network_hostname);
+                ret = nb_email_send(to, subj , msg);
+                sleep(1);
+                if (ret == 0){
+                  if(DEBUG)printf("Successfully sent E-Mail to %s\n", to);
+                  release_point_info2_email = 0;
+                  info2_value = 0;
+                } else {
+                    if(DEBUG)printf("Unable to send E-Mail\n");
+                    nb_syslog("Unable to send E-Mail\n");
+                    release_point_info2_email = 1;
+                  }
+                }
+       } else if (percentage_value >= 25){
+                if(DEBUG)printf("A quarter of the SIM card's data allowance has been used.\nCurrent usage is %s percent\n",percentage_value);
+         } else {
+             if(DEBUG)printf("Currently using %s percent\n",percentage_value);
+           }
+ sleep(interval);  # 20 minutes
+ printf("\nNext run\n");
+ release_point_alert_email = 1;
+ if (alert2_value >= alert2_value_time){
+   release_point_alert2_email = 1;
+ }
+ if (info_value >= info_value_time){
+   release_point_info_email = 1;
+ }
+ if (info2_value >= info2_value_time){
+   release_point_info2_email = 1;
+ }
+}
+exit(0);
 </code>
 ++++
+----
+Next, set up the trigger that will start the script.
+{{:app-notes:wlan_trigger.png?950|}}
+Here, too, pressing the plus button opens a new window with insertion options.
 ----
+Here, too, pressing the plus button opens a new window with insertion options.
+{{:app-hotes:volum_trigger.png?950|}}
+Again, start by assigning a ''name'' to the SDK process. Use the ''“event-based”'' option as the trigger type for this script. Select the ''“sdk-startup”'' event from the list. Why do we use these settings for the script? The script was created as an endless script. The commands are controlled and executed in the script. Errors are output and the program is then terminated. The event starts the script when the daemon of the SDK program is started by the router. This is also advantageous if the watchdog restarts the SDK daemon on the router. In this case, the script is also reactivated.  The ''“Apply”'' button saves the changes back to the router.
+----
+In the last step, we activate the SDK script on the router.
+{{:app-hotes:volum_job.png?950|}}
+Again, enter the name for the SDK process first. If you want to activate the first SDK script on the router, the two fields “Trigger” and “Script” are already filled with the options you set up earlier. If you already have multiple scripts, you must select the correct option (Trigger and Script) from the pull-down menu. As before, click “Apply” to apply the setting to the router. In this case, the SDK script is also activated.
+----
+{{:app-hotes:volum_status.png?950|}}
+Using the Administration option under point 1, you can view information under the Status tab, point 2, to see whether the SDK script has started correctly and is running without errors.
+----
 ===== - Important settings in the SDK script =====
+**
+<WRAP center round important 60%>
+Please only make changes in this section of the block.
+</WRAP>
+**
+What options do you have for modifying the SDK script to suit your needs?
+{{:app-hotes:volum_skrip_info.png?950|}}
+Under ''point 1'', the interval can be determined by the SDK script. Here, ''1200 seconds (20 minutes)'' have been stored.
+Under ''point 2'', the data volume of the SIM card for one month can be stored. A volume of ''30 GB'' has been stored as an example.
+An email address must be entered under ''point 3''. Alarm and information messages will be sent to this address.
+A phone number for the SMS service must be entered under ''point 4''. Alarm messages will then be sent to this number when the SIM card has used up its volume for that month.
+Under ''point 5'', you can enter the time for alarm messages when ''90 percent'' of the data volume has been used up.
+Under ''point 6'', you can enter the time for information messages when ''75 percent'' of the data volume has been used up.
+Under ''point 7'', you can enter the time for information messages when ''50 percent'' of the data volume has been used up.
 ----

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