LittleFS External Configuration

RE: LittleFS External Configuration

QBSho — Thu, 08 Aug 2024 12:12:26 GMT

&is25lp064a {
address-size-32;
};
was the issue and no custom storagenames (default works without pm_static)

RE: LittleFS External Configuration

QBSho — Wed, 07 Aug 2024 22:26:24 GMT

Could it be that there is something wrong with my flash config.

with normal flash access everything is working.
when i change to littlefs the mounting breaks.

&qspi {
	pinctrl-0 = <&qspi_default>;
	pinctrl-1 = <&qspi_sleep>;
	pinctrl-names = "default", "sleep";
	is25lp064a: is25lp064a@0 {
		compatible = "nordic,qspi-nor";
		reg = <0>;
		writeoc = "pp4io";
		readoc = "read4io";
		sck-frequency = <8000000>;
		jedec-id = [9d 60 17];
		size = <8388608>; //8 MB or DT_SIZE_M(8)
	};
};

&pinctrl {
    qspi_default: qspi_default {
        group1 {
            psels = <NRF_PSEL(QSPI_SCK,1, 4)>,    // SCK
                    <NRF_PSEL(QSPI_CSN,0, 26)>,    // CSN
                    <NRF_PSEL(QSPI_IO0,0, 30)>,    // IO0
                    <NRF_PSEL(QSPI_IO1,0, 29)>,    // IO1
                    <NRF_PSEL(QSPI_IO2,0, 28)>,    // IO2
                    <NRF_PSEL(QSPI_IO3,1, 2)>;    // IO3
        };
    };
    qspi_sleep: qspi_sleep {
        group1 {
            psels = <NRF_PSEL(QSPI_SCK,1, 4)>,    // SCK
                    <NRF_PSEL(QSPI_CSN,0, 26)>,    // CSN
                    <NRF_PSEL(QSPI_IO0,0, 30)>,    // IO0
                    <NRF_PSEL(QSPI_IO1,0, 29)>,    // IO1
                    <NRF_PSEL(QSPI_IO2,0, 28)>,    // IO2
                    <NRF_PSEL(QSPI_IO3,1, 2)>;    // IO3
        };
    };
};

&is25lp064a {
    address-size-32;
};

Is there a way to debug this further?

I just try all option form this post!

Unable to use LittleFS on External Flash on nrf9160

RE: LittleFS External Configuration

QBSho — Wed, 07 Aug 2024 15:54:08 GMT

The simple littlefs works, but as i going to external and do not use the standard the problem pops up.

RE: LittleFS External Configuration

Kenneth — Wed, 07 Aug 2024 12:29:38 GMT

Hi,

I have tried to see if anyone else have reported the same error I have also tried to dig a bit into the code, but I can't really find what may be failing here. It could be some configuration problem so maybe going back to the simple littlf sample.

Kenneth

RE: LittleFS External Configuration

QBSho — Wed, 07 Aug 2024 08:09:59 GMT

I got a little further,

a restart of the system and before flash manually trigger the build brings now the right paritions.
It uses now 1MB as configured but the mounting point is not showing up

Where i could debug the mounting point?

FS_LITTLEFS_DECLARE_DEFAULT_CONFIG(storage);
static struct fs_mount_t lfs_storage_mnt = {
	.type = FS_LITTLEFS,
	.fs_data = &storage,
	.storage_dev = (void *)FLASH_AREA_ID(littlefs_storage),
	.mnt_point = "/lfs1",
};

struct fs_mount_t *mp = &lfs_storage_mnt;


int data_archive_init(void) {

	unsigned int id = (uintptr_t)mp->storage_dev;
	struct fs_statvfs sbuf;
	const struct flash_area *pfa;
	int rc;

    rc = flash_area_open(id, &pfa);
	if (rc < 0)
	{
		LOG_ERR("FAIL: unable to find flash area %u: %d\n",
			   id, rc);
		return;
	}

	LOG_INF("Area %u at 0x%x for %u bytes\n",
		   id, (unsigned int)pfa->fa_off, (unsigned int)pfa->fa_size);

	/* Optional wipe flash contents */
	if (IS_ENABLED(CONFIG_APP_WIPE_STORAGE))
	{
		LOG_INF("Erasing flash area ... ");
		rc = flash_area_erase(pfa, 0, pfa->fa_size);
		LOG_INF("%d\n", rc);
	}

	flash_area_close(pfa);

	rc = fs_mount(mp);
	if (rc < 0)
	{
		LOG_ERR("FAIL: mount id %u at %s: %d\n",
			   (unsigned int)mp->storage_dev, mp->mnt_point,
			   rc);
		return;
	}
	LOG_INF("%s mount: %d\n", mp->mnt_point, rc);

	rc = fs_statvfs(mp->mnt_point, &sbuf);
	if (rc < 0)
	{
		LOG_ERR("FAIL: statvfs: %d\n", rc);

	}

	LOG_INF("%s: bsize = %lu ; frsize = %lu ;"
		   " blocks = %lu ; bfree = %lu\n",
		   mp->mnt_point,
		   sbuf.f_bsize, sbuf.f_frsize,
		   sbuf.f_blocks, sbuf.f_bfree);
    

    return 0;
}

00:00:00.559,448] <inf> littlefs: LittleFS version 2.5, disk version 2.0
[00:00:00.559,478] <dbg> littlefs: littlefs_flash_init: FS area 9 at 0x700000 for 1048576 bytes
[00:00:00.559,600] <err> fs: fs mount error (-22)
[00:00:00.559,631] <err> data_archive: FAIL: mount id 9 at /lfs1: -22

[00:00:00.559,661] <err> fs: mount point not found!!
[00:00:00.559,692] <err> data_archive: FAIL: open /lfs/archive.dat: -2

How to fix the invalid -22 mountpoint!

RE: LittleFS External Configuration

QBSho — Wed, 07 Aug 2024 05:37:33 GMT

Thank you luckyyorange,

I already know this guy and the video.

#Partion manager
CONFIG_PM_EXTERNAL_FLASH_MCUBOOT_SECONDARY=n

seems not working, because of

external_flash:
address: 0x0
end_address: 0x00800000
region: external_flash
size: 0x8388608
littlefs_storage:
address: 0x0
device: is25lp064a
region: external_flash
size: 0x00100000

Anything to force this?

the build log looks good.

Also my app doesn't start correctly - non output on RTT. Also without automount!

BR S

RE: LittleFS External Configuration

luckyyorange — Wed, 07 Aug 2024 02:59:40 GMT

Hey QBSho,

I recommend checking out this video for configuring littlefs for use on an external flash. Configuring littlefs is the toughest part, and the video goes over it very well.