topic Re: MFS in MQX Software Solutions

MFS

netra — Sat, 16 Feb 2013 09:38:34 GMT

I have Installed a device ram , under which I have installed a MFS named "s:"

Then I am uninstalling "s:".

I want to search all the files present in he device . so, I am opening ram using fopen & searching first file using ioctl , which is throwing error .

I am writing a code to search a file from root directory.

mfs_ramdisk: is device driver , the directory is a:(only root directory is present no other directory is present)

error_code = ioctl(mfs_fd_ptr, IO_IOCTL_FIND_FIRST_FILE,(uint_32_ptr) &search);// I am getting error in this statement , it is failing and not displying any files searched

mfs_fd_ptr = fopen("ramdisk:", NULL);

if (mfs_fd_ptr == NULL)

{

	printf("Error opening the MFS device driver!");
	return;

}

error_code = ioctl(mfs_fd_ptr, IO_IOCTL_FIND_FIRST_FILE,(uint_32_ptr) &search);

while (error_code == MFS_NO_ERROR)

{


	error_code = ioctl(mfs_fd_ptr, IO_IOCTL_FIND_NEXT_FILE,(uint_32_ptr) &search_data);

}

fclose(mfs_fd_ptr);

Thanks in advance

Re: MFS

DavidS — Thu, 21 Feb 2013 16:50:49 GMT

Hi netra,

Why are you closing "s:"?

Have you reviewed and run the following example?

C:\Freescale\Freescale_MQX_4_0\mfs\examples\ramdisk\cw10

From the shell prompt, after you have formatted the drive, you can create a test file and the issue a "dir" shell command that will issue the IOCTL command to find the first file in current directory.

Here is my terminal output (note I used TWR-MEM card with MRAM):

shell> Demo start

Initialized Ram Disk to a:\

NOT A DOS DISK! You must format to continue.

Shell (build: Feb 15 2013)

shell>

shell> format a:

Formating...

Done. Volume name is

Free disk space: 518144 bytes

shell>

shell> dir

shell>

shell> write test.txt 123

shell>

shell> dir

TEST.TXT 123 01-01-1980 00:04:26 A TEST.TXT

shell>

Similar topic that might also be of value:

Re: USB device with MFS ramdisk

Hope this helps.

Regards,

David

Re: MFS

Monica — Tue, 26 Feb 2013 23:58:54 GMT

Netra, is this helpful?

How is the project going?

Keep us posted please! :smileywink:

Regards!