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RTL: Flash File System

Stefan Reto Gygax

Hi

I'm using flash device.

Configuration:
Sector size 256 byte.

The fuction ffree() returns always 0 byte.

Is this possible?

Parents
  • 0 in reply to Mikhail S.

    Hi Mikhail

    I'm sure the problem is the configuration. I had the same problem.

    Make sure <read/write area> (--> set in <options for target>)
    and
    <target device base address> (--> set in the file <file_config.c>)
    do not overlap each other.

    Example for my ARM:

    <read/write area> (--> set in <options for target>):
Start=0x200000, Size=0x8000

<target device base address>  (--> set in the file <file_config.c>):
Target base address=0x208000
Device size in bytes=0x8000

    Ckeck it and let me know about your memory layout. Best regards Stefan

Reply
  • 0 in reply to Mikhail S.

    Hi Mikhail

    I'm sure the problem is the configuration. I had the same problem.

    Make sure <read/write area> (--> set in <options for target>)
    and
    <target device base address> (--> set in the file <file_config.c>)
    do not overlap each other.

    Example for my ARM:

    <read/write area> (--> set in <options for target>):
Start=0x200000, Size=0x8000

<target device base address>  (--> set in the file <file_config.c>):
Target base address=0x208000
Device size in bytes=0x8000

    Ckeck it and let me know about your memory layout. Best regards Stefan

Children
  • 0 in reply to Stefan Reto Gygax

    Hi Stefan,
    my configuration:

    Read/Write Memory Areas
on-chip:
IRAM1 Start:0x4000000 Size:0x8000

In the file "AFS_Config.c":
#define RAM_DEV     1
#define RAM_BADR    0x04008000
#define RAM_SIZE    0x010000
#define RAM_NSECT   8

    as you can see, there is no overlap. Stefan, are your test project work in simulator? Mikhail

  • 0 in reply to Mikhail S.

    Hi Mikhail

    Yes, application with RAM drive works on target and in simualtor.

    Have you tryed with smal RAM size configuartion yet?
    How is the memory layout of your ARM?

    Stefan

  • 0 in reply to Stefan Reto Gygax

    Hi Stefan,

    Memory layout for the STR912FW44 is:

    ROM bank0 0x0 0x7FFFF (size 0x80000)
ROM bank1 0x80000 0x87FFF (size 0x8000)
RAM 0x4000000 0x4017FFF (size 0x18000)

    Stefan, can you send me your test project with file system, so I can try it on simulator and compare with my project. Do not send lib files, just zip up your project with simple main() that you already post here. My address: mikhail.sokolov@baselineindustries.com

    thanks
    Mikhail