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RL-ARM FileSystem Problem opening File

Eugen Mailaender

Hallo,

i'm using RL-ARM FileSytem + RealView.
Initiallly calling the function ffree("F:") returns 65504 Bytes free.

Normally all works fine, but after trying to open a Non existing File for 9 times, the function ffree("F:") returns 0 Bytes free. At this point, also the fformat function does not work. After reseting the system, all works again.

Example: Calling the DummyOpen() + ffree("F:") 9 times
works ok, after the free size gives 0:

bool DummyOpen(char *fName) {
FILE *fin;

        fin = fopen (fName, "r");                                                     // 33 uS
        if (fin == NULL)
                return false;                   // File not found!

        fclose (fin);
        return true;
}

thank you for any information.

Eugen

  • 0

    Hallo,

    the program works for 15 times correct, not for 9 times.

    Sorry
    Eugen

  • 0

    We need more information to be able to help.

    What arm device are you using? Where are you storing files (internal/external flash)? How is the Flash device configured? What version of MDK, RL-ARM are you using?

  • 0 in reply to Franc Urbanc

    Please ignore my previous post. We have found and fixed the problem.

    Please contact support for updated libraries.

    Franc

  • 0 in reply to Franc Urbanc

    Hallo,

    I'm using the Atmel AT91SAM7XC256, the RL-ARM version is V3.10.
    Tool Version Numbers:
    Toolchain Path: D:\KeilArm\ARM\BIN30\
    C Compiler: Armcc.Exe V3.0.0.942
    Assembler: Armasm.Exe V3.0.0.942
    Linker/Locator: ArmLink.Exe V3.0.0.942
    Librarian: ArmAr.Exe V3.0.0.942
    Hex Converter: FromElf.Exe V3.0.0.942
    CPU DLL: SARM.DLL V3.02a
    Dialog DLL: DARMATS.DLL V1.05
    Target DLL: BIN\UL2ARM.DLL V1.20a
    Dialog DLL: TARMATS.DLL V1.03

    The FileSystem works on Internal Flash (F:)

    bool DummyOpen(char *fName) {
FILE *fin;

        fin = fopen (fName, "r");                                                     // 33 uS
        if (fin == NULL)
                return false;                   // File not found!

        fclose (fin);
        return true;
}


void TestFs(char *fName)        {
        for (int cnt=1;  cnt<30;  cnt++)
        {
                TRACE(("\n\r%d  Free:%d   ", cnt, ffree(fName) ));
                TRACE(("DummyOpen:%d    ", (int)DummyOpen(fName) ));
                TRACE(("Free:%d   ", ffree(fName) ));
        }
}

    Calling TestFs("F:x.x") gives the following result:

    1 Free:65504 DummyOpen:0 Free:65504
    2 Free:65504 DummyOpen:0 Free:65504
    3 Free:65504 DummyOpen:0 Free:65504
    4 Free:65504 DummyOpen:0 Free:65504
    5 Free:65504 DummyOpen:0 Free:65504
    6 Free:65504 DummyOpen:0 Free:65504
    7 Free:65504 DummyOpen:0 Free:65504
    8 Free:65504 DummyOpen:0 Free:65504
    9 Free:65504 DummyOpen:0 Free:65504
    10 Free:65504 DummyOpen:0 Free:65504
    11 Free:65504 DummyOpen:0 Free:65504
    12 Free:65504 DummyOpen:0 Free:65504
    13 Free:65504 DummyOpen:0 Free:65504
    14 Free:65504 DummyOpen:0 Free:65504
    15 Free:65504 DummyOpen:0 Free:65504
    16 Free:65504 DummyOpen:0 Free:0
    17 Free:0 DummyOpen:0 Free:0

    Eugen