NUCLEO-H745ZI-Q: Azure FileX question - fx_directory_local_path_restore() use

[CLour.1]

Dear All,

I'm currently working on a project that will use STM32H745ZI MCU and RTOS Azure ThreadX + FileX

While a in-house developed prototype board is not available, a NUCLEO-H745ZI-Q board is being used to get familiarised with SW and tools.

Development environment:

- IDE: STM32CubeIDE

- RTOS: Azure ThreadX and FileX

 Note: ThreadX and FileX libraries are built separately(CMake based build) and linked with the application developed under the IDE.

FileX application description (IDE based):

1) Initialisation

1.1) Memory pool creation

1.2) FileX initialisation (call to "fx_system_initialize()")

1.3) Allocate a thread stack

1.4) Create and start a thread (single thread application)

2) Thread entry function environment

2.1) Creation and initialisation of a SRAM disk ("sram_disk")

2.2) Creation of a directory to be used as default ("/home")

2.3) Set the previously created directory as default

2.4) Run the test scenario

2.4.1) Create a new directory "test_dir1" under the default "home"

    // mkdir test_dir1

     // Get local path: [not set]

     // Get default path: [/home]

2.4.2) Set the local path to the newly created directory

    // cd test_dir1

    // Get local path: [/home/test_dir1]

    // Get default path: [/home]

2.4.3) Create a new directory "test_dir2" under "test_dir1"

    // mkdir test_dir2

    // Get local path: [/home/test_dir1]

    // Get default path: [/home]

2.4.4) Set the local path to the newly created directory "test_dir2"

    // cd test_dir2

    // Get local path: [/home/test_dir1/test_dir2]

    // Get default path: [/home]

2.4.5) Try to set the local path to "test_dir1" (using "fx_directory_local_path_restore()" )

    // cd ..

    // Get local path:

    //               Expected: /home/test_dir1/

    //               Obtained: /home/test_dir1/test_dir2

     // Get default path: [/home]

2.5 Loop forever

I was expecting that "fx_directory_local_path_restore()" would restore the previous local path to "/home/test_dir1" but that is not the case.

Could someone please explain what is the correct use of "fx_directory_local_path_restore()" ?

Many thanks for your time,

Carlos

Test scenario code follows:

// ----------------------------------------------------------------------------------------------------------

static char testFileName1[] = "test_file1";

static char testFileName2[] = "test_file2";

static char testDir1[] = "test_dir1";

static char testDir2[] = "test_dir2";

static char upDir[] = "..";

static char curDir[] = ".";

void local_path_test_scenario(FX_LOCAL_PATH* fxPreviousLocalPath)

{

   UINT status;

   CHAR default_path_name_buffer[256];

   CHAR local_path_name_buffer[256];

   // mkdir testDir1

   status = fx_directory_create(&sram_disk, testDir1);

   if (FX_SUCCESS != status) assert(0);

   // Get local path: [not set]

   status = fx_directory_local_path_get_copy(&sram_disk, local_path_name_buffer, 256);

   if (FX_SUCCESS != status) assert(0);

   // Get default path: [/home]

   status = fx_directory_default_get_copy(&sram_disk, default_path_name_buffer, 256);

   if (FX_SUCCESS != status) assert(0);

   // cd testDir1

   status = fx_directory_local_path_set(&sram_disk, fxPreviousLocalPath, testDir1);

   if (FX_SUCCESS != status) assert(0);

   // Get local path: [/home/test_dir1]

   status = fx_directory_local_path_get_copy(&sram_disk,local_path_name_buffer, 256);

   if (FX_SUCCESS != status) assert(0);

   // Get default path: [/home]

   status = fx_directory_default_get_copy(&sram_disk, default_path_name_buffer, 256);

   if (FX_SUCCESS != status) assert(0);

   // mkdir test_dir2

   status = fx_directory_create(&sram_disk, testDir2);

   if (FX_SUCCESS != status) assert(0);

   // Get local path: [/home/test_dir1]

   status = fx_directory_local_path_get_copy(&sram_disk, local_path_name_buffer, 256);

   if (FX_SUCCESS != status) assert(0);

   // Get default path: [/home]

   status = fx_directory_default_get_copy(&sram_disk, default_path_name_buffer, 256);

   if (FX_SUCCESS != status) assert(0);

   // cd test_dir2

   status = fx_directory_local_path_set(&sram_disk, fxPreviousLocalPath, testDir2);

   if (FX_SUCCESS != status) assert(0);

   // Get local path: [/home/test_dir1/test_dir2]

   status = fx_directory_local_path_get_copy(&sram_disk, local_path_name_buffer, 256);

   if (FX_SUCCESS != status) assert(0);

   // Get default path: [/home]

   status = fx_directory_default_get_copy(&sram_disk, default_path_name_buffer, 256);

   if (FX_SUCCESS != status) assert(0);

   // cd ..

   status = fx_directory_local_path_restore(&sram_disk, fxPreviousLocalPath);

   if (FX_SUCCESS != status) assert(0);

   // Get local path:

   //               Expected: /home/test_dir1/

   //               Obtained: /home/test_dir1/test_dir2

   status = fx_directory_local_path_get_copy(&sram_disk, local_path_name_buffer, 256);

   if (FX_SUCCESS != status) assert(0);

   // Get default path: [/home]

   status = fx_directory_default_get_copy(&sram_disk, default_path_name_buffer, 256);

   if (FX_SUCCESS != status) assert(0);

}

// ----------------------------------------------------------------------------------------------------------

[Haithem Rahmani]

Hi,

IIRC, the sequence you descibed is working correctly.

status = fx_directory_local_path_set(&sram_disk, fxPreviousLocalPath, testDir2);
 

the Local path here is set to "testDir2"

then later the fx_directory_local_path_restore is called, so it is returning the last path set that is "testDir2"

status = fx_directory_local_path_restore(&sram_disk, fxPreviousLocalPath);
 
   if (FX_SUCCESS != status) assert(0);
 
 
   // Get local path:
 
   //  Expected: /home/test_dir1/
 
   //  Obtained: /home/test_dir1/test_dir2

Am I missing something?

regards

Haithem.