Is there a reason why I cant change the time value from a cgi function?

MQXuser · ‎10-12-2009

I am using the following code to change the time value in a cgi function but the webserver stops working after i call the function. Any clues about why is this happening?

    TIME_STRUCT  MQX_time;
    DATE_STRUCT  DateStruct;
   
    DateStruct.YEAR = year;
    DateStruct.MONTH = month;
    DateStruct.DAY = day;
    DateStruct.HOUR = hour;
    DateStruct.MINUTE = minute;
    DateStruct.SECOND = second;
    DateStruct.MILLISEC = millisec;

 _time_from_date(&DateStruct, &MQX_time);//Convierte la fecha a tiempo MQX
 _time_set (&MQX_time); //Actualiza el tiempo MQX con la fecha actual
 _rtc_sync_with_mqx ( FALSE ); //Sincroniza RTC con MQX (MQX es la Fuente)

MQXuser · ‎10-22-2009

I stopped messing with MQX_time and used another time structure. Things are going fine for now.

View solution in original post

PetrL · ‎10-14-2009

I can see any issue in your code. In this type of problem I would check task stack usage (in TAD) and eather increase it or try to save space on stack..

PetrL

MQXuser · ‎10-14-2009

I which task would you increase the stack?

If it is a task created into an MQX library, could you mention the file where I can define the stack?

JuroV · ‎10-21-2009

This can be set with ___DEFAULT_INTERRUPT_STACK_SIZE in lcf (linker) file.

JuroV · ‎10-21-2009

For task stack, to increase the stack size, you can do that in task template list.

Use TAD, break the running code in the CGI handler and look in which task's context the handler is running. Increase the stack size for that task (or for interrupts).

MQXuser · ‎10-21-2009

Thank you for your answer, I have increased the stack size for http_server task (because it had the higher usage percentage)as well as for interrupt stack.

Problem is still present.

I dont think problem comes from stack overflow, I have tested my functions in other tasks and everything works fine.

Is there a restriction for changing the mqx time from a cgi function?

PetrM · ‎10-22-2009

Yes, it looks like httpd sessions rely on actual MQX time. I guess this is good point of further improvement. As a workaround, please try to redefine macro in httpd_mqx.h like this:

#define HTTPD_GET_TIME(time) _time_get_elapsed(time)

MQXuser · ‎10-22-2009

Changing the macro is not working for me (I've changed the macro and recompiled the libraries).
All the application hangs as soon as the MQX time changes(I have plenty of other tasks and all of them stop working).
I noticed that if I change MQX_time for a time not very far from the original time, everything works okay.
Does anybody see a solution to this problem? How to change MQX_time using ethernet?

MQXuser · ‎10-22-2009

I stopped messing with MQX_time and used another time structure. Things are going fine for now.

JuroV · ‎10-13-2009

Nothing obvious, please post the whole CGI handler.

MQXuser · ‎10-13-2009

Thank you for your answer.

Everything works when the setTimeFromDate function is not called.

setTimeFromDate(ianio, imes, idia, ihora, iminuto, 0, 0);

void setTimeFromDate(uint_16 year, uint_16 month, uint_16 day, uint_16 hour,
                       uint_16 minute, uint_16 second, uint_16 millisec){
    TIME_STRUCT  MQX_time;
    DATE_STRUCT  DateStruct;
   
    DateStruct.YEAR = year;
    DateStruct.MONTH = month;
    DateStruct.DAY = day;
    DateStruct.HOUR = hour;
    DateStruct.MINUTE = minute;
    DateStruct.SECOND = second;
    DateStruct.MILLISEC = millisec;

 _time_from_date(&DateStruct, &MQX_time);//Convierte la fecha a tiempo MQX
 _time_set (&MQX_time); //Actualiza el tiempo MQX con la fecha actual
 _rtc_sync_with_mqx ( FALSE ); //Sincroniza RTC con MQX (MQX es la Fuente)
}

int cgi_modificar_tiempo(HTTPD_SESSION_STRUCT *session) {
 uint_32  len = 0,index=0;
 char     hora[5], minuto[5], dia[5], mes[5], anio[5];
 uint_32   ihora, iminuto, idia, imes, ianio;
 boolean  bParams = FALSE;
 char buffer[100];

 html_head(session->sock,"HVAC Settings response");

 httpd_sendstr(session->sock, "<BODY>\n");

 httpd_sendstr(session->sock, "<br><br>\n");

 if (session->request.content_len) {
     len = session->request.content_len;
     len = httpd_read(session, buffer, (int)((len > sizeof(buffer)) ? sizeof(buffer) : len));
     buffer[len] = 0;
     session->request.content_len -= len;
     len = 0;
    
  if ( httpd_get_varval(session, buffer, "hora", hora, sizeof(hora)) &&
    httpd_get_varval(session, buffer, "minuto", minuto, sizeof(minuto)) &&
    httpd_get_varval(session, buffer, "dia", dia, sizeof(dia)) &&   
    httpd_get_varval(session, buffer, "mes", mes, sizeof(mes)) &&
    httpd_get_varval(session, buffer, "anio", anio, sizeof(anio))
    ){
  
   bParams =  TRUE;
            if( !PasswordOK() ){
          rclave_ing = "Es necesario ingresar la palabra clave para utilizar esta funcion";
       httpd_sendstr(session->sock,
    "<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.0 Transitional//EN\">"
    "<html><head><title>MQX</title>"
    "<meta http-equiv=\"REFRESH\" content=\"0;url=resultado.html\"></HEAD>"
    "<BODY></BODY></HTML>");
            }
            else{
             if (  (sscanf(hora, "%d", &ihora) == 1  ) && (sscanf(minuto, "%d", &iminuto) == 1  )                      && (sscanf(dia, "%d", &idia) == 1  ) &&
                   (sscanf(mes, "%d", &imes) == 1  ) && (sscanf(anio, "%d", &ianio) == 1  )  ) {
                  setTimeFromDate(ianio, imes, idia, ihora, iminuto, 0, 0);
                rclave_ing = "Se ha modificado la fecha correctamente";
       httpd_sendstr(session->sock,
    "<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.0 Transitional//EN\">"
    "<html><head><title>MQX</title>"
    "<meta http-equiv=\"REFRESH\" content=\"0;url=resultado.html\"></HEAD>"
    "<BODY></BODY></HTML>");
          }
          else{
           bParams = FALSE;
          }
            }
     }
    }

 if (!bParams) {
  httpd_sendstr(session->sock, "No se recibieron los parametros<br>\n");
 }

 return session->request.content_len;
}

I have called the function setTimeFromDate(2009, 11, 23, 10, 30, 0, 0); with constant numbers

and the webserver stops working too.

Thank you.