AVR Freaks



int flip2_parseextparams(PROGRAMMER* pgm, LISTID
extparams)

{

 LNODEID ln;

 const char *extended_param;

 //struct dfu_status status;

 int cmd_result = 0;

 //int aux_result;



 for (ln = lfirst(extparams); ln; ln = lnext(ln)) {

  extended_param = ldata(ln);



  if (strncmp(extended_param, "s", strlen("s")) == 0) {

   if (verbose >= 2)

    fprintf(stderr,

                   "%s: flip2_parseextparams(): start
application\n", progname);

   struct flip2_cmd cmd = {

    FLIP2_CMD_GROUP_EXEC, FLIP2_CMD_START_APP, { 0x00,
0, 0, 0 }

   };



   cmd_result = dfu_dnload(FLIP2(pgm)->dfu,
&cmd, sizeof(cmd));

   aux_result = dfu_getstatus(FLIP2(pgm)->dfu,
&status);



   if (aux_result != 0)

      return aux_result;



    if (status.bStatus != DFU_STATUS_OK) {

        fprintf(stderr, "%s: Error: DFU status %s\n",
progname,

          flip2_status_str(&status));

      dfu_clrstatus(FLIP2(pgm)->dfu);

    } else

      break;

    break;

   }



    fprintf(stderr,

            "%s: wiring_parseextparms(): invalid
extended parameter '%s'\n",

            progname, extended_param);

    cmd_result = -1;

   }



  return cmd_result;

}

Hey,

In the DFU FLIP there is a "Start application" command: http://www.atmel.com/Images/doc8457.pdf [Page 13]

In flip2.c (DFU implementation for avrdude) this command is not implemented,

So I added another function:

int flip2_parseextparams(PROGRAMMER* pgm, LISTID extparams)
{
 LNODEID ln;
 const char *extended_param;
 //struct dfu_status status;
 int cmd_result = 0;
 //int aux_result;

 for (ln = lfirst(extparams); ln; ln = lnext(ln)) {
  extended_param = ldata(ln);

  if (strncmp(extended_param, "s", strlen("s")) == 0) {
   if (verbose >= 2)
    fprintf(stderr,
                   "%s: flip2_parseextparams(): start application\n", progname);
   struct flip2_cmd cmd = {
    FLIP2_CMD_GROUP_EXEC, FLIP2_CMD_START_APP, { 0x00, 0, 0, 0 }
   };

   cmd_result = dfu_dnload(FLIP2(pgm)->dfu, &cmd, sizeof(cmd));
   aux_result = dfu_getstatus(FLIP2(pgm)->dfu, &status);

   if (aux_result != 0)
      return aux_result;

    if (status.bStatus != DFU_STATUS_OK) {
        fprintf(stderr, "%s: Error: DFU status %s\n", progname,
          flip2_status_str(&status));
      dfu_clrstatus(FLIP2(pgm)->dfu);
    } else
      break;
    break;
   }

    fprintf(stderr,
            "%s: flip2_parseextparams(): invalid extended parameter '%s'\n",
            progname, extended_param);
    cmd_result = -1;
   }

  return cmd_result;
}

But when I run it, I get the next error:

Segmentation fault (core dumped)

What is the problem?