using LFN feature in sd card with stm32f4
Hi,I want to use lfn feature in sd card and i use stm32f4 for this purpose i set _USE_LFN to 1 and _MAX_LFN to 255 . when i create the file , file is created but when i want to return file name , returns wrong.
please guide me, how to return file name when i use lfn feature?
i attache the code.
unsigned char save_file_sd_log(void)
{
rtc_get(NO_CHANGE);
delay_ms(5);
if (INSERT_SD ==0)
{
res=disk_initialize (0);
if (res==FR_OK)
{
rtc_get(NO_CHANGE);
res=f_mount(&SDFatFs,"1:/", 1);
if (res!=FR_OK && res!=FR_EXIST)
{
sprintf(str,"save log to sd ERROR f_mount:%d",res);
debug(str);
return 0;
}
res=f_mkdir ("1:/LOG");
if (res!=FR_OK && res!=FR_EXIST)
{
sprintf(str,"save log to sd ERROR f_mkdir:%d",res);
debug(str);
return 0;
}
if(AA_SaveOnCycleFile==1)
{
sprintf(name_file_str,"1:/LOG/CYCLE%02d%02d%02d.log",year_shamsi,month_shamsi,day_shamsi);
res = f_open( &SD_File , name_file_str ,FA_OPEN_ALWAYS | FA_READ | FA_WRITE);
}
else
{
sprintf(name_file_str,"1:/LOG/EVENT%02d%02d%02d.log",year_shamsi,month_shamsi,day_shamsi);
res = f_open( &SD_File , name_file_str ,FA_OPEN_ALWAYS | FA_READ | FA_WRITE);
}
if (res!=FR_OK && res!=FR_EXIST)
{
sprintf(str,"save log to sd ERROR f_open:%d",res);
debug(str);
return 0;
}
res = f_lseek(&SD_File, SD_File.fsize);
if (res!=FR_OK && res!=FR_EXIST)
{
f_close(&SD_File);
f_closedir(&SD_dir);
sprintf(str,"save log to sd ERROR f_lseek:%d",res);
debug(str);
return 0;
}
f_printf (&SD_File,"%s",log_trigger_sd);
res=f_close(&SD_File);
f_closedir(&SD_dir);
return 1;
}
else
{
debug("disk Not Initialize!");
return 0;
}
}
else
{
debug("NO Insert Card!");
return 0;
}
}
unsigned char find_files_sd(void)
{
if (INSERT_SD ==0)
{
res=disk_initialize (0);
if (res==0)
{
res=f_mount(&SDFatFs,"1:/", 1);
if (res!=FR_OK && res!=FR_EXIST)
{
sprintf(str,"<ERR*SD NOT Ready:%d*>\r\n",res);
if (start_debug==1) print(DEBUG_PORT,str);
else if (start_debug==2) print(LAN_PORT,str);
return 0;
}
res = f_findfirst(&SD_dir,&fno,"1:/LOG","*.LOG"); /* Start to search for log files */
sprintf(str,"<FFILE*");
if (start_debug==1) print(DEBUG_PORT,str);
else if (start_debug==2) print(LAN_PORT,str);
while (res == FR_OK && fno.fname[0]) /* Repeat while an item is found */
{
sprintf(str,"%s*%ld*", fno.lfname,fno.fsize);
if (start_debug==1) print(DEBUG_PORT,str);
else if (start_debug==2) print(LAN_PORT,str);
res = f_findnext(&SD_dir, &fno); /* Search for next item */
}
sprintf(str,">\r\n");
if (start_debug==1) print(DEBUG_PORT,str);
else if (start_debug==2) print(LAN_PORT,str);
f_closedir(&SD_dir);
}
else
{
sprintf(str,"<ERR*disk Not Initialize!*>\r\n");
if (start_debug==1) print(DEBUG_PORT,str);
else if (start_debug==2) print(LAN_PORT,str);}
}
else
{
sprintf(str,"<ERR*NO Insert Card!*>\r\n");
if (start_debug==1) print(DEBUG_PORT,str);
else if (start_debug==2) print(LAN_PORT,str);
return 0;
}
return 1;
}
