problem with MFS on SD card.

botaoyang — Mon, 01 Jun 2015 13:27:49 GMT

I am using MFS to creat a sub directory in sd card, the program is as below:

error_code = ioctl(filesystem_handle, IO_IOCTL_CREATE_SUBDIR,"data\\neee");

if (!error_code)

{

printf("success create subdir.\n");

}

this program works some time, but the program also always stops here,

I am using my custom board, and I am sure the board is ok.

MQX 4.1, CW 10.6.

Re: problem with MFS on SD card.

soledad — Mon, 01 Jun 2015 23:49:19 GMT

Hello botao,

Please check the sdcard example located at the path: C:\Freescale\Freescale_MQX_4_2\mfs\examples\sdcard

This example may helps as reference.

In addition please check the below code, this is from sh_mkdir.c file:

/*FUNCTION*-------------------------------------------------------------------

* Function Name : Shell_mkdir

* Returned Value : int32_t error code

* Comments : mount a filesystem on a device.

* Usage: mkdir <directory>

*END*---------------------------------------------------------------------*/

int32_t Shell_mkdir(int32_t argc, char *argv[] )

{ /* Body */

bool print_usage, temp, shorthelp = FALSE;

int32_t error = 0, return_code = SHELL_EXIT_SUCCESS;

MQX_FILE_PTR fs_ptr;

SHELL_CONTEXT_PTR shell_ptr = Shell_get_context( argv );

char *abs_path = NULL;

print_usage = Shell_check_help_request(argc, argv, &shorthelp );

if (!print_usage) {

if (argc != 2) {

printf("Error, invalid number of parameters\n");

return_code = SHELL_EXIT_ERROR;

print_usage=TRUE;

} else {

if (MFS_alloc_path(&abs_path) != MFS_NO_ERROR) {

printf("Error, unable to allocate memory for paths\n" );

return_code = SHELL_EXIT_ERROR;

}

else

{

_io_get_dev_for_path(abs_path,&temp,PATHNAME_SIZE,(char *)argv[1],Shell_get_current_filesystem_name(shell_ptr));

fs_ptr = _io_get_fs_by_name(abs_path);

/* check if filesystem is mounted */

if (fs_ptr == NULL) {

printf("Error, file system not mounted\n" );

return_code = SHELL_EXIT_ERROR;

} else {

error = _io_rel2abs(abs_path,shell_ptr->CURRENT_DIR,(char *) argv[1],PATHNAME_SIZE,Shell_get_current_filesystem_name(shell_ptr));

if(!error)

{

error = ioctl(fs_ptr, IO_IOCTL_CREATE_SUBDIR, (void *) abs_path);

}

if (error) {

printf("Error creating directory %s\n", argv[1]);

}

MFS_free_path(abs_path);

}

if (print_usage) {

if (shorthelp) {

printf("%s <directory> \n", argv[0]);

} else {

printf("Usage: %s <directory>\n", argv[0]);

printf(" <directory> = name of directory to create\n");

}

return return_code;

}

#endif //SHELLCFG_USES_MFS

/* EOF*/

Have a great day,
Sol

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problem with MFS on SD card.

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