Write a file to littlefs using mcumgr and return The system cannot find the path specified

RE: Write a file to littlefs using mcumgr and return The system cannot find the path specified

llly — Thu, 08 Aug 2024 02:17:57 GMT

Hello Menon,

Thank you for your research. Currently, this issue is not very important, but it would be best if it could be resolved.

RE: Write a file to littlefs using mcumgr and return The system cannot find the path specified

Menon — Wed, 07 Aug 2024 11:47:50 GMT

Hello Illy,

I wanted to let you know that I am still looking into this case, but I am currently stuck at a certain point. I will invest some more time in this, and if I am unable to make any progress, I will seek assistance internally.

Sorry for the delay.

Kind regards,

Abhijith

RE: Write a file to littlefs using mcumgr and return The system cannot find the path specified

llly — Fri, 02 Aug 2024 01:42:23 GMT

Hi Menon

I haven't made any new progress yet.

RE: Write a file to littlefs using mcumgr and return The system cannot find the path specified

Menon — Thu, 01 Aug 2024 12:02:35 GMT

Hello,

Apologies for the delayed response; it's summer vacation season here in Norway.

Hieu was on vacation, and I’ve been assigned to this ticket in the meantime. I’m following up to see if there have been any updates on this issue, as it has been two weeks since it was raised. Could you please let me know if there has been any progress?

Kind regards,

Abhijith

RE: Write a file to littlefs using mcumgr and return The system cannot find the path specified

llly — Tue, 16 Jul 2024 02:26:00 GMT

Hi Hieu

Thank you for testing. I was able to reproduce error 5 using your project, but it still did not succeed.

RE: Write a file to littlefs using mcumgr and return The system cannot find the path specified

Hieu — Tue, 16 Jul 2024 00:14:24 GMT

Hi llly,

I return with mixed good-bad news.

After thinking about my test results, I realized that my NMP timeout state is a worse state than my initial "Error 5" state.

The reason is because in this the NMP timeout error state, I cannot even run image list, while in the "Error 5" state, I can run image list.

However, I still cannot figure out why the fs commands don't work.

As for restarting from a fresh start, I tried using the File system shell but it would not work at all, NMP Timeout no matter what I tried...

Unfortunately, I will now have to be out of office for a few weeks and cannot further investigate either of the issues. I will leave some notes now, and one of my colleagues will further support you.

For the record, I reached the "Error 5" state by doing the following:

Start with samples_for_nrf_connect_sdk/bootloader_samples/smp/mcuboot_smp_uart · hellesvik(github.com).
- There is no reason to this starting point. I simply know that this unofficial sample has MCUmgr enabled, and your setup has MCUboot, so I figure it is a decent starting point.
Update main.c and prj.conf with contents from sdk-zephyr/samples/subsys/fs/littlefs at v3.5.99-ncs1 · sdk-zephyr (github.com)

From my other tests, I would expect that starting with the littlefs sample and then adding MCUmgr with the FS commands would yield the same results.

Attached is my project.
The "Error 5" state can be reproduce with building by default, or with heap_stack_size.conf overlay.
The "NMP Timeout" state cane be reproduced with building with the fs_shell.conf overlay.

devzone.nordicsemi.com/.../mcumgr_5F00_fs_5F00_tests_5F00_240716_5F00_01.zip

P.s: I also see that I uploaded the wrong log for this "Error 5" state last time, so I have reproduced it and updated my last reply.

RE: Write a file to littlefs using mcumgr and return The system cannot find the path specified

llly — Thu, 11 Jul 2024 01:14:33 GMT

Hi Hieu

Yes, the problem I am currently facing is NMP timeout, which looks the same as yours.

Thank you for your efforts. I will continue to wait for your good news.

RE: Write a file to littlefs using mcumgr and return The system cannot find the path specified

Hieu — Wed, 10 Jul 2024 21:20:04 GMT

Hi llly,

My results have been different, but things are still not working in either cases.

PS C:\_w\c\c329113_littlefs_mcuboot\mcuboot_smp_uart> mcumgr -c com14 fs download /lfs/pattern.bin a2.bin
Error: 5
PS C:\_w\c\c329113_littlefs_mcuboot\mcuboot_smp_uart> mcumgr -c com14 fs upload hi.txt /lfs/hi.txt
0
Error: 5

Assuming this is error from mcumgr, error 5 is MGMT_ERR_ENOENT, which is also no such file.

This was going to resemble your initial issue somewhat. However, if I understand you correctly, you had some issue with your mcumgr connstring; and after fixing that, you get NMP Timeout errors instead. Is that right?

That would make sense because after looking closely at your second screenshot, the stat commands are also failing with the same "cannot find the path specified" error. This means it is unlikely that the device's file system is the root cause.

I am now also at the same point. A few stack and heap config changes get me to:

CONFIG_HEAP_MEM_POOL_SIZE=4096
CONFIG_SYSTEM_WORKQUEUE_STACK_SIZE=8192

C:\_w\c\c329113_littlefs_mcuboot\mcuboot_smp_uart>mcumgr -c com14 fs upload ./hi.txt /lfs/hi.txt
Error: NMP timeout

C:\_w\c\c329113_littlefs_mcuboot\mcuboot_smp_uart>mcumgr -c com14 fs download /lfs/pattern.bin abc.bin
Error: NMP timeout

C:\_w\c\c329113_littlefs_mcuboot\mcuboot_smp_uart>mcumgr -c com14 fs download /lfs/pattern.bin abc.bin -t 300
Error: NMP timeout

(I switched from Windows PowerShell to Windows CMD in the second log there, but that should not be an issue.)

I have been looking into the mcumgr Golang CLI too but haven't fully figured out what is going on yet. It would be very helpful if I can add logging as if it is a Python script, but it doesn't seem to be the same here.

I will try a few things more and pull in some help.

RE: Write a file to littlefs using mcumgr and return The system cannot find the path specified

llly — Wed, 10 Jul 2024 01:19:16 GMT

Hi Hieu

It's okay, but I want to know if your mcumgr is also in the same situation? Or can you read and write normally on your end? If you haven't encountered this problem, could it be a problem with my driver or something else?

RE: Write a file to littlefs using mcumgr and return The system cannot find the path specified

Hieu — Tue, 09 Jul 2024 19:18:38 GMT

Hi llly,

Sorry for the long absence. I have not forgot your question here, but I still haven't figured it out yet.

I will try to keep you regularly updated.

RE: Write a file to littlefs using mcumgr and return The system cannot find the path specified

llly — Tue, 09 Jul 2024 03:21:20 GMT

Hi Hieu

Can you help me check this question when you have time？

RE: Write a file to littlefs using mcumgr and return The system cannot find the path specified

llly — Thu, 27 Jun 2024 02:39:19 GMT

It is indeed a problem with dev, I use this command

mcumgr conn add acm0 type="serial" connstring="dev=COM50,baud=115200,mtu=512"

There will be no prompt for path error.

But now the error has changed to NMP timeout

RE: Write a file to littlefs using mcumgr and return The system cannot find the path specified

llly — Thu, 27 Jun 2024 01:16:32 GMT

HI Hieu

There is this foo.txt in the current directory of cmd.

I tried using an absolute path, but the result was still the same.

And any command I enter returns this result, even disconnecting the device from the computer is like this.

Is it possible that the command dev=/dev/ttyACM0 needs to be modified?

RE: Write a file to littlefs using mcumgr and return The system cannot find the path specified

Hieu — Wed, 26 Jun 2024 13:46:17 GMT

Hi llly,

The error seems to be because the command line cannot find foo.txt on your system rather than a problem with the device.

I am not sure where mcumgr expect foo.txt to be without any path, but can you try using an absolute path? Also avoid using any non-ASCII character in the path. Preferably only use alphanumeric character and maybe underscore "_".

Hieu