On Thu, Dec 28, 2023 at 06:22:05PM +0000, Tim Hardisty wrote:
> Code size?
Hardly an argument when the basic read and write is the same code and the
remaining could be under #ifdef.
On the other hand there is a lot of bloated code if a board could
be populated with two a more different chips.
> > On 28 Dec 2023, at 17:11, Bernd Walter <ti...@cicely7.cicely.de> wrote:
> >
> > On Thu, Dec 28, 2023 at 04:46:08PM +0000, Janardhan Silwal wrote:
> >> Oh!!
> >> So that is the one you used.
> >> I did see that on the menu config, but wasn't sure if it was the one. and
> >> I was halfway through completing the driver when I noticed that option in
> >> menu config anyway, so I went ahead and completed the driver.
> >> Anyway it is working, so no worries there.
> >> Thanks though.
> >
> > I really wonder why the are so many *25 NOR-flash drivers to begin with.
> > Aren't they supposed to be similar and autoprobing?
> >
> >> ________________________________
> >> From: Tim Hardisty <timhardist...@gmail.com>
> >> Sent: Thursday, December 28, 2023 20:18
> >> To: dev@nuttx.apache.org <dev@nuttx.apache.org>
> >> Subject: Re: LittleFS Implementation using MTD for NOR flash
> >>
> >> Device Drivers -> Memory Technology Device (MTD) Support -> SPI-based
> >> M25P/MT25Q
> >>
> >>> 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
> >>>>>
> >
> > --
> > B.Walter <be...@bwct.de> https://www.bwct.de
> > Modbus/TCP Ethernet I/O Baugruppen, ARM basierte FreeBSD Rechner uvm.
--
B.Walter <be...@bwct.de> https://www.bwct.de
Modbus/TCP Ethernet I/O Baugruppen, ARM basierte FreeBSD Rechner uvm.
