MQX Software SolutionsのトピックRe: Change size of FFS drive (MQX 4.0.1, TWR-K70)

Change size of FFS drive (MQX 4.0.1, TWR-K70)

friederschrempf — Tue, 25 Jun 2013 06:43:29 GMT

I'm using the FFS library with the example project (NAND Flash File System patch for Freescale MQX™ RTOS 4.0.0). After running the format command from the shell I always get 10 723 328 bytes free disk space.

I want to enlarge the drive to cover e.g. 100M of NANDFLASH. I tried modifiying NANDFLASH_1ST_DATA_DRIVE_SIZE_IN_BLOCK but without effect.

Has anyone got a hint for me, please? Thank you!

Re: Change size of FFS drive (MQX 4.0.1, TWR-K70)

DavidS — Thu, 27 Jun 2013 18:31:57 GMT

Hi Frieder,

I opened the nandflash_wl.ffs.h header in the ffs_twrk70f120m project and changed the define as follows:

#define NANDFLASH_1ST_DATA_DRIVE_SIZE_IN_BLOCK 200 //DES was 90

Recompile the ffs, then recompile the mfs_nandflash_twrk70f120m example project and it did increase the disk space.

Note that the default 90 size gave a 10.7MB disk and a 200 size gave a 251MB size.

So the example we have is generating (or partitioning) a small disk on the NAND flash and not making it one big disk.

The specific NAND device information is in the bsp_twrk70f120m MT29F2G16.c file.

When I changed the block to 1937 (2048-110-1) I got a big disk.

Regards,

David

Re: Change size of FFS drive (MQX 4.0.1, TWR-K70)

friederschrempf — Fri, 28 Jun 2013 07:02:33 GMT

Thank you for your detailed instructions!

I have tried this before. Now I had a closer look at the recompiled library and found out, that the nandflash_wl_ffs.h file in the library directory was somehow not replaced by the new one. I deleted it manually. Rebuild again and then it worked.

Re: Change size of FFS drive (MQX 4.0.1, TWR-K70)

okaner — Fri, 28 Jun 2013 10:47:42 GMT

Hi David,

Thank you. It worked for me also. I want to ask you that after power on reset if I call "fsopen" it says "you must format disk to continue". I lose all of my data, if I format. How can I solve this. I attached the console output also , too show what I did.

Re: Change size of FFS drive (MQX 4.0.1, TWR-K70)

DavidS — Fri, 28 Jun 2013 15:56:42 GMT

Hi Okan,

You must issue a "fsclose" after adding files/directories to the NAND device. Then you are OK to power off and then power on, issue "fsopen" and life should be good.

Regards,

David

Re: Change size of FFS drive (MQX 4.0.1, TWR-K70)

okaner — Fri, 28 Jun 2013 16:55:24 GMT

Hi David, thank you...

It worked.

I tried couple of things. If you call "fsclose", you don't lose anything with POR. But if you made change in file and reset your device, you lose your changes. Isn't it a bug. For example, I have log file and I am continuously writing in it, suddenly power is gone. After reset I lost all of my data. Should I call fsclose and fsopen after any changes in filesystem?

Best Regards,

Okan

Re: Change size of FFS drive (MQX 4.0.1, TWR-K70)

DavidS — Fri, 28 Jun 2013 17:56:14 GMT

Hi Okan,

It is all up to user how to implement. Other customers I have open, write, close a log file just to ensure the data is good should there be a brown out or total lose of power.

I'm heading out on vacation so not back until July 8th.

You might snoop around to see if there is a flush command that might help.

But in general the FAT table is in RAM and if power gone file system gets corrupted.

Regards,

David

Re: Change size of FFS drive (MQX 4.0.1, TWR-K70)

okaner — Fri, 28 Jun 2013 18:15:17 GMT

Hi David,

Thank you... Have a nice vacation..

Re: Change size of FFS drive (MQX 4.0.1, TWR-K70)

okaner — Fri, 28 Jun 2013 18:36:10 GMT

Hi David,

Just calling "fflush (filesystem_handle)" after changing file solve this problem. Thank you...

Best Regards,

Okan

Re: Change size of FFS drive (MQX 4.0.1, TWR-K70)

jessg_ — Tue, 06 Aug 2013 09:18:31 GMT

Hi Okan,

I've tried the same call to fflush(...) but it doesn't work for me. While trying to understand what happens, I have seen the function _io_nandflash_wl_ioctl() doesn't make anything in the case of IO_IOCTL_FLUSH_OUTPUT command... Can you tell me what does fflush(...) function execute in your case?

Thank you!

Re: Change size of FFS drive (MQX 4.0.1, TWR-K70)

okaner — Thu, 26 Sep 2013 06:49:11 GMT

Hi David,

I installed mqx 4.0.2 and new ffs. I have done same steps but now I get smaller disk size. Do you have any idea. Thank you. TWRK60f120m. I was successful on mqx 4.0.1.

nandflash_wl_ffs.h

#define NANDFLASH_1ST_DATA_DRIVE_SIZE_IN_BLOCK 1937

#define NANDFLASH_1ST_DATA_DRIVE_START_BLOCK 110

Formating...
Done. Volume name is
Free disk space: 126212096 bytes

Okan ERCAN

Re: Change size of FFS drive (MQX 4.0.1, TWR-K70)

danielchai — Fri, 27 Dec 2013 16:25:12 GMT

Hi David,

I am using TWR-K60F120, CW10.4 and MQX4.0.2. When I change the

#define NANDFLASH_1ST_DATA_DRIVE_SIZE_IN_BLOCK 90

#define NANDFLASH_1ST_DATA_DRIVE_START_BLOCK 110

#define NANDFLASH_1ST_DATA_DRIVE_SIZE_IN_BLOCK 1937

#define NANDFLASH_1ST_DATA_DRIVE_START_BLOCK 110

the disk space is 126212096 bytes. It changed but is still not the correct value.

I tried to delete the file and replace it by a new one but it still does not show the correct free space.

Thank you.

-Daniel

Re: Re: Change size of FFS drive (MQX 4.0.1, TWR-K70)

DavidS — Mon, 13 Jan 2014 20:09:40 GMT

Hi Daniel,

There is a difference. Don’t know why but I am asking our MQX team and will respond with answer later.

Going back in time to MQX4.0.0 and the FFS applied to it and comparing the ddi_nand_data_drive_get_info.cpp files shows a difference.

If you look at the FFS 4.0.2 version it had added a “/2” to line 64 which halved the memory size for the NAND. If I removed it to make it same as MQX FFS4.0.0 I see the correct NAND size and testing seems to work fine.

Regards,

David

Re: Change size of FFS drive (MQX 4.0.1, TWR-K70)

danielchai — Mon, 13 Jan 2014 20:56:47 GMT

Hi David,

Thank you.

Another question for NAND Flash is that is there any ioctl command used for page erase?

I read that it has the block erase but didn't see anything about the page erase.

-Daniel

Re: Re: Change size of FFS drive (MQX 4.0.1, TWR-K70)

DavidS — Mon, 13 Jan 2014 22:30:04 GMT

Hi Daniel,

The data sheet for the Micron NAND flash indicates there is only Block erase capability.

No page erase capability that I can see.

Regards,

David

Re: Change size of FFS drive (MQX 4.0.1, TWR-K70)

danielchai — Tue, 14 Jan 2014 13:14:04 GMT

Hi David,

Thank you for your answer.

In that case, I need to erase a block before I can write to a page.

But how could I keep the content in the rest of pages?

Thank you.

-Daniel

Re: Change size of FFS drive (MQX 4.0.1, TWR-K70)

DavidS — Tue, 14 Jan 2014 16:36:28 GMT

Hi Daniel,

I think you are looking too deep into using the NAND flash driver.

Please review following document in MQX path:

C:\Freescale\Freescale_MQX_4_0_2\doc\ffs\MQXFFSUG.pdf Section 3.2.

My read of it indicates that once the MFS is mounted on top of the wear-leveling FFS you just access it as a file system and it will handle things for you.

Regards,

David

Re: Change size of FFS drive (MQX 4.0.1, TWR-K70)

danielchai — Tue, 14 Jan 2014 18:47:52 GMT

Hi David,

My problem is that when I use the wear-leveling FFS and combine this in the USB MSD. When I get a read request, it shows: assertion failed: 0, file simple_mutex.cpp line 141. My understanding is that in USB part, if I use FFS, the mutex is disabled somehow.

Thank you.

-Daniel

Re: Change size of FFS drive (MQX 4.0.1, TWR-K70)

adt — Mon, 19 May 2014 04:49:01 GMT

Hi David,

I am using TWRK60F120M board. in nandflash I am creating datalog so I have to write continuosly in nandflash & to save data properly after every 10-15 sec I am closing nandflash & then reopening it to write next data but here I checked after 4-5 cycle of nand close & open next time when I sent nandopen command my task is goes in block state, when I checked task summary I see unhandled interrupt state for that task & idle task become active.

Thank you.

Re: Change size of FFS drive (MQX 4.0.1, TWR-K70)

DavidS — Mon, 19 May 2014 19:23:18 GMT

Hi adt123,

How much data are you writing to the NAND in the 10-15 second interval?

Are you using MQX4.1 or older MQX?

Do you get an error on the fsclose()?

Are you using the mfs_nandflash_twrk60F120m example or your own code?

Regards,

David