How can I store data before sending it

Projects Programming
1

Dear All,

I have a script which collect the GPS coordinate. Each minute it send it to a server.
For several reason, I would like that the Arduino Mini pro keep in memory the collected coordinate for 5 minutes and then send it to the server.

In other words, the loop collect the coordinate each minute.
The arduino keep in memory the the coordinate collected each minute.
After 5 minutes (or more..) it send all collected coordinate.

My first question would be how to recoord the data and send all in one block

Here is an exemple of my sendDATA function wich works fine. That function ius called each minute

void SendData(void){
   #ifdef DEBUG
     Serial.println(F(""));
     Serial.println(F("\nSENDING COORDS TO THE REMOTE SERVER"));
     Serial.println(F("---------------------------------------"));
   #endif
     
    stat=gps.getStat();
    
    #ifdef DEBUG
      if(stat==0){
        Serial.println(F("GPS OFF"));
        Serial.println(F("No coords sent"));
      }else if(stat==1){
         Serial.println(F("NOT FIXED"));
         Serial.println(F("No coords sent"));
      }else if(stat==2){
         Serial.println(F("2D FIXED"));
      }else if(stat==3){
         Serial.println(F("3D FIXED"));
      }
    #endif

     //Get data from GPS
     
     // Send the data only if the are FIXes, otherwise give up the send function
     // This is to avoid battery consomation
     if(stat == 2 || stat == 3){
     
       gps.getPar(lon,lat,alt,time,vel);
       #ifdef DEBUG
         Serial.println(lat);
         Serial.println(lon);
       #endif
       
       char coords[97];
    
       // Convert Int to char
       char course_id[6] = {0};
       sprintf(course_id, "%d", courseid);
       puts(course_id);
       
       strcpy(coords,co);          //3
       strcat(coords,course_id);
          
       //strcpy(coords,lo);          //3
       strcat(coords,lo);          //3
       strcat(coords,lon);
   
       strcat(coords,la);         //22
       strcat(coords,lat);
    
       strcat(coords,al);         //41
       strcat(coords,alt);
  
       strcat(coords,ti);         //60
       strncat(coords,time,14);   //74
    
       strcat(coords,ve);         //78
       strcat(coords,vel);
          
       #ifdef DEBUG
         Serial.println(F("Sending now... . Wait for 5 to 10 seconds"));
       #endif      
       
       // Send the data to the server
       inet.httpPOST(host, port_post, path_post, coords, "Result", 0);
          
       #ifdef DEBUG
         Serial.print(F("Data sent : "));
         Serial.println(coords);
         Serial.println(F("Wait for 10 second"));
       #endif
          
       delay(10000);
     }       
     enterCommand();
}
// End sendDATA()

I will ask my second question in a new post as the question is different but related to it

Thank a lot cheers

2

This sounds like you need arrays (or an array of structs) to store the data in. Parse the data as you do now, put it (host, port_post, path_post, coords) into the arrays every minute and send the data collected five minutes ago. Increment the array index and wrap it back to zero when it reaches five.