Wi-Fi® + Bluetooth® + 802.15.4のトピック[RW612] Error occurred while adding a Flash region

[RW612] Error occurred while adding a Flash region

hclee — Tue, 18 Feb 2025 05:50:59 GMT

Error occurred while adding a Flash region

I encountered an error while attempting to add a 4MByte Flash region to the frdmrw612_wifi_cli_over_ble_wu project, as shown in the image below.

I tried to initialize the new Flash region by creating a separate lfs_config and using the existing lfs_init function, but an error occurred during the lfs_mount process.

The error occurs specifically in the lfs_mount function when calling the lfs_dir_fetchmatch function, which returns an error value of -5.

What additional aspects should be checked when adding a new Flash region?

For reference, the symbols.ldt and end_text.ldt files have been updated with the new Flash region information, based on the existing LITTLEFS_FLASH_region information.

Re: [RW612] Error occurred while adding a Flash region

DanielRuvalcaba — Tue, 18 Feb 2025 19:43:30 GMT

Hi,

What SDK version are you using?

Can you please share steps to replicate this?

Regards,

Daniel.

Re: [RW612] Error occurred while adding a Flash region

hclee — Wed, 19 Feb 2025 03:32:04 GMT

Hi, @DanielRuvalcaba

The SDK version I am using is 2.16.100, as shown in the image below.

To reproduce the situation, I performed the following steps:

Step 1

In MCUXpresso, navigate to Project properties -> C/C++ Build -> MCU Settings and allocate the TEST_LITTLEFS_region.

Step 2

In the project folder, navigate to linkscripts and add the following content to two files:

1. symbols.ldt
TEST_LITTLEFS_FLASH_START_ADDRESS = __base_TEST_LITTLEFS_FLASH_region;
TEST_LITTLEFS_FLASH_SECTOR_SIZE = 0x1000; /* 4k flash sector size */
TEST_LITTLEFS_FLASH_MAX_SECTORS = (__top_TEST_LITTLEFS_FLASH_region
TEST_LITTLEFS_FLASH_START_ADDRESS) / TEST_LITTLEFS_FLASH_SECTOR_SIZE;

2. end_text.ldt
.TEST_LITTLEFS_FLASH_region :
{
. = ORIGIN(TEST_LITTLEFS_FLASH_region) + LENGTH(TEST_LITTLEFS_FLASH_region) - 1;
} > TEST_LITTLEFS_FLASH_region

Step 3

Flash Config

Define the flash specifications and write the Test_LittleFS_config as shown in the attached test_littlefs.c file.
.....
/* Maximum block read size definition */
#define TEST_LITTLEFS_READ_SIZE 16

/* Maximum block program size definition */
#define TEST_LITTLEFS_PROG_SIZE 256

/* Erasable block size definition */
#define TEST_LITTLEFS_BLOCK_SIZE 4096

/* Block count */
#define TEST_LITTLEFS_BLOCK_COUNT 1024

/* Minimum block cache size definition */
#define TEST_LITTLEFS_CACHE_SIZE 256

/* Minimum lookahead buffer size definition */
#define TEST_LITTLEFS_LOOKAHEAD_SIZE 16

extern uint32_t TEST_LITTLEFS_FLASH_START_ADDRESS[];

/*
* Name: TEST_FLASH_LITTLEFS_SECTOR_SIZE
* Description: external symbol from linker command file, it represents the size
* of a FLASH sector
*/
extern uint32_t TEST_LITTLEFS_FLASH_SECTOR_SIZE[];

/*
* Name: TEST_LITTLEFS_FLASH_MAX_SECTORS
* Description: external symbol from linker command file, it represents the sectors
* count used by the ENVM storage system; it has to be a multiple of 2
*/
extern uint32_t TEST_LITTLEFS_FLASH_MAX_SECTORS[];

static struct lfs_config Test_LittleFS_config = {
.context = (void*)&Test_LittleFS_ctx,
.read = test_lfs_mflash_read,
.prog = test_lfs_mflash_prog,
.erase = test_lfs_mflash_erase,
.sync = test_lfs_mflash_sync,
#ifdef LFS_THREADSAFE
.lock = test_lfs_mflash_lock,
.unlock = test_lfs_mflash_unlock,
#endif
.read_size = TEST_LITTLEFS_READ_SIZE,
.prog_size = TEST_LITTLEFS_PROG_SIZE,
.block_size = TEST_LITTLEFS_BLOCK_SIZE,
.block_count = TEST_LITTLEFS_BLOCK_COUNT,
.block_cycles = 100,
.cache_size = TEST_LITTLEFS_CACHE_SIZE,
.lookahead_size = TEST_LITTLEFS_LOOKAHEAD_SIZE
};
.....

Step 4
TEST_LITTLEFS INIT
- Call the lfs_t * test_lfs_init(void) function in the test_littlefs.c file to attempt initialization.
- Call the lfs_mount function and observe that an error occurs in the return result.
Regards,
hclee.

Re: [RW612] Error occurred while adding a Flash region

hclee — Wed, 19 Feb 2025 03:48:54 GMT

Please refer to the "test_littlefs.c" file in this document.

Re: [RW612] Error occurred while adding a Flash region

DanielRuvalcaba — Thu, 20 Feb 2025 22:25:10 GMT

Hi,

Thanks for the instructions.

I am having 2 issues while replicating this:

1. The following "TEST_LITTLEFS_FLASH_MAX_SECTORS = (__top_TEST_LITTLEFS_FLASH_region TEST_LITTLEFS_FLASH_START_ADDRESS) / TEST_LITTLEFS_FLASH_SECTOR_SIZE;" in symbols.ldt is giving me some problems in the linker. Is it defined correctly?

2. The project can't find #include "ble_lower_level.h" and #include "audio.h". These files are not included in the original wifi_cli_over_ble_wu example, right?

Regards,

Daniel.

Re: [RW612] Error occurred while adding a Flash region

hclee — Fri, 21 Feb 2025 00:17:39 GMT

1.
There was a typo in the part I mentioned.

The original is as follows:

EDGEFAST_BT_LITTLEFS_STORAGE_START_ADDRESS = __base_LITTLEFS_FLASH_region;

EDGEFAST_BT_LITTLEFS_STORAGE_SECTOR_SIZE = 0x1000; /* 4k flash sector size */

EDGEFAST_BT_LITTLEFS_STORAGE_MAX_SECTORS = (__top_LITTLEFS_FLASH_region - EDGEFAST_BT_LITTLEFS_STORAGE_START_ADDRESS) / EDGEFAST_BT_LITTLEFS_STORAGE_SECTOR_SIZE;

What I wrote is as follows:

TESET_LITTLEFS_FLASH_START_ADDRESS = __base_TESET_LITTLEFS_FLASH_region;

TESET_LITTLEFS_FLASH_SECTOR_SIZE = 0x1000; /* 4k flash sector size */

TESET_LITTLEFS_FLASH_MAX_SECTORS = (__top_TESET_LITTLEFS_FLASH_region - TESET_LITTLEFS_FLASH_START_ADDRESS) / TESET_LITTLEFS_FLASH_SECTOR_SIZE;

I thought I added it correctly according to the original format, but could there be a problem with this method?

The audio.h file is a file I added separately. The file only contains several values defined with #define, and there is no content related to Flash.

Re: [RW612] Error occurred while adding a Flash region

DanielRuvalcaba — Mon, 24 Feb 2025 22:04:21 GMT

Hi,

Thanks for the details.

I am checking this.

Regards,

Daniel.

Re: [RW612] Error occurred while adding a Flash region

hclee — Tue, 04 Mar 2025 07:34:17 GMT

Hi, @DanielRuvalcaba

Could you provide an update on the status of the issue I inquired about earlier?

Regards,

hclee

Re: [RW612] Error occurred while adding a Flash region

DanielRuvalcaba — Tue, 04 Mar 2025 21:56:47 GMT

Hi,

Sorry for the late reply. By any chance, have you tried to mount the littlefs as in littlefs_shell?

I'm sharing with you an article that might help you.

Regards,

Daniel.