Hi,
I tried using the template that you provied.
I have gotten the mtd partition blocks mounted using littefs. And tried
creating and writing a test message to the file via nsh shell.
The file seems to have been created, and the test message does exist even after
power cycling.
So, now how do I go about creating application which creates, write to and read
from file on the mounted partition?
Best Regards,
Janardhan
________________________________
From: Tim Hardisty <timhardist...@gmail.com>
Sent: Thursday, December 28, 2023 20:36
To: dev@nuttx.apache.org <dev@nuttx.apache.org>
Subject: Re: LittleFS Implementation using MTD for NOR flash
FYI - if you type the / character in menuconfig it will allow you to
search for things (e.g. /MT25 will show two entries relating to MT25
memory - the MTD settings and the actual flash ID of the device you're
using (which will need to exist in the relevant driver code of course -
so with your code editor search all files in the project for MT25Q
related data and you'll find the data in m25px.c I think)
On 28/12/2023 14:28, Janardhan Silwal wrote:
> which driver did you use?
> I didn't see MT25QL SPI flash in menu config so I went ahead and wrote one!
>
> Best regards,
> Janardhan
> ________________________________
> From: Tim Hardisty<timhardist...@gmail.com>
> Sent: Thursday, December 28, 2023 19:15
> To:dev@nuttx.apache.org <dev@nuttx.apache.org>
> Subject: Re: LittleFS Implementation using MTD for NOR flash
>
> I have only ever used NuttX "directly" with my apps running over it
> rather than any other middleware or anything, so I can't answer that.
>
> My board has been fitted with a MT25QL01GBBB8ESF, and has worked fine,
> so your flash is most likely supported already?
>
> On 28/12/2023 12:12, Janardhan Silwal wrote:
>> Hi,
>>
>> I am using MT25QL, 1Gbit series flash memory.
>>
>> Thanks for the template.
>> Would running in this format over the middleware running over nuttx also
>> follow the same approach?
>>
>> Best Regards,
>> Janardhan
>> ________________________________
>> From: Tim Hardisty<timhardist...@gmail.com>
>> Sent: Thursday, December 28, 2023 17:31
>> To:dev@nuttx.apache.org <dev@nuttx.apache.org>
>> Subject: Re: LittleFS Implementation using MTD for NOR flash
>>
>> Hi,
>>
>> What flash are you using out of interest?
>>
>> But, the basic approach (in or called from your board bringup for
>> example) is:
>>
>>
>> spi_flash= sam_spibus_initialize(PORT); /* this call is arch dependent */
>> if(!spi_flash)
>> {
>> /* Do something */
>> }
>> #ifdefined(CONFIG_MTD_M25P)
>> mtd = m25p_initialize(spi_flash, MINOR);
>> #elifdefined(CONFIG_MTD_GD25)
>> mtd = gd25_initialize(spi_flash, MINOR);
>> #elif defined(CONFIG_MTD_YOURFLASHTYPE)
>> /* etc */
>> #endif
>> if(!mtd)
>> {
>> /* Do something */
>> }
>> #ifdefined(CONFIG_FS_LITTLEFS)
>> /* Mount the LittleFS file system */
>> ret = register_mtddriver("/dev/flash", mtd, 0755, NULL);
>> if(ret < 0)
>> {
>> /* Do something */
>> }
>> ret = nx_mount("/dev/flash", "/mnt/flash", "littlefs", 0, "autoformat");
>> if(ret < 0)
>> {
>> /* Do something */
>> }
>>
>> That was a copy/paste/edit or my own code so please forgive any typo errors!
>>
>> On 28/12/2023 11:19, Janardhan Silwal wrote:
>>> Hi community,
>>>
>>> I am trying to get littlefs running on a NOR flash memory using the MTD
>>> driver, on a STM32F4 chip.
>>>
>>> I had some bottlenecks in the implementation as I am an out-and-out novice
>>> when it comes to Nuttx.
>>> I have written a custom driver for the flash, which is working with MTD, as
>>> I couldn't find the exact driver for the flash installed on my system.
>>>
>>> Now I need some guidance on where to start for linking LittleFS to MTD and
>>> the rest..
>>>
>>> Best Regards,
>>> Janardhan Silwal
>>>
