nRF9161 DK SPI Flash example

RE: nRF9161 DK SPI Flash example

nrao32 — Sat, 25 Jan 2025 15:45:56 GMT

We can close this as completed. It ended up being a wiring issue (contact) with one of the pin connections being just a tad loose. Thanks for your help!

RE: nRF9161 DK SPI Flash example

Hakon — Fri, 24 Jan 2025 15:09:37 GMT

Can you try to do logic trace of all the pins?

RE: nRF9161 DK SPI Flash example

nrao32 — Fri, 17 Jan 2025 05:47:23 GMT

No dice. Bought this:
https://www.amazon.com/dp/B0D3WY8DR6

... which explicitly states microSDHC support, and I still get the same "Card does not support CMD8, assuming legacy card" -- I tried variations of that overlay file like:

&spi3 {
    gd25wb256: gd25wb256e3ir@1 {
        status = "disabled";
    };
    
    status = "okay";
    pinctrl-0 = <&spi3_default>;
    pinctrl-1 = <&spi3_sleep>;
    pinctrl-names = "default", "sleep";
    cs-gpios = <&gpio0 10 GPIO_ACTIVE_LOW>;
    
    sdhc0: sdhc@0 {
        compatible = "zephyr,sdhc-spi-slot";
        reg = <0>;
        status = "okay";
        mmc {
            compatible = "zephyr,sdmmc-disk";
            status = "okay";
        };
        spi-max-frequency = <1000000>;
    };
};

I tried fiddling with the spi-max-frequency as well. Oddly, it works with my nRF9160 DK, but I can't for the life of me get this working on the 9161.

RE: nRF9161 DK SPI Flash example

Hakon — Mon, 13 Jan 2025 12:27:47 GMT

[quote user="nrao32"]I: Card does not support CMD8, assuming legacy card[/quote]

Yes, this card is probably not SDHC compatible. I had the same issue, so I changed the SD card to a newer one. I use a SanDisk Ultra 16 GB SD card.

RE: nRF9161 DK SPI Flash example

nrao32 — Sat, 11 Jan 2025 06:04:30 GMT

Hi Hakon, can you please let me know what SD card module / SD card you are using for your test? I just get the following error when I run the sample:

*** Booting nRF Connect SDK v2.9.0-7787b2649840 ***
*** Using Zephyr OS v3.7.99-1f8f3dc29142 ***
Sample program to r/w files on littlefs
I: LittleFS version 2.9, disk version 2.1
I: Card does not support CMD8, assuming legacy card
E: Storage init ERROR!
E: fs mount error (-134)

I've tried several different SD card modules and different SD cards. I tried the littlefs sample (formatted the SD card with lfs tool) and the fat_fs sample (formatted the SD card as FAT32). I have been trying for days. Any pointers would be appreciated! Thanks again.

RE: nRF9161 DK SPI Flash example

nrao32 — Mon, 16 Dec 2024 13:55:46 GMT

Great. I will give this a go. I'm not sure if I'll be able to reformat this particular SD card chip I've got, as it comes preformatted with FAT fs, which seems to be a bit more complex to set up based on the nRF fatfs sample, however I will try. Thanks again!

RE: nRF9161 DK SPI Flash example

Hakon — Mon, 16 Dec 2024 10:06:15 GMT

You can check this https://docs.nordicsemi.com/bundle/ug_nrf9161_dk/page/UG/nrf91_DK/hw_description/external_memory.html

But use P0.10 for CS pin instead.

RE: nRF9161 DK SPI Flash example

nrao32 — Fri, 13 Dec 2024 23:10:05 GMT

Perfect timing! Thank you, Hakon! Can you please let me know what you mean by "arduino pins for SPI"? Which pins are those on the board?

RE: nRF9161 DK SPI Flash example

Hakon — Fri, 13 Dec 2024 14:00:32 GMT

It is taking some time to port this sample to nrf9161, but interfacing the SD card with SPI works now. You can add the overlay to the sample and build with prj_blk.conf

&spi3 {
    gd25wb256: gd25wb256e3ir@1 {
        status = "disabled";
    };
    sdhc0: sdhc@0 {
            compatible = "zephyr,sdhc-spi-slot";
            reg = <0>;
            status = "okay";
            mmc {
                compatible = "zephyr,sdmmc-disk";
                status = "okay";
            };
            spi-max-frequency = <1000000>;
    };
};

then use the arduino pins for SPI. You can just ask if you need more help after this. I will let you know when I'm done with the sample.

RE: nRF9161 DK SPI Flash example

Hakon — Fri, 29 Nov 2024 11:23:43 GMT

Hi again, I have been out of office unexpectedly for a few days now. Because of this I have not had time to look into this. I will try to get some time for this now. In the mean time, you can try looking at https://github.com/nrfconnect/sdk-zephyr/tree/main/samples/subsys/fs/littlefs and use the prj_blk.conf to build for SD card build config.

RE: nRF9161 DK SPI Flash example

Hakon — Fri, 22 Nov 2024 13:29:08 GMT

I'm in the process of setting up a sample. I will try to finish this by the end of the week.

RE: nRF9161 DK SPI Flash example

nrao32 — Thu, 21 Nov 2024 03:06:05 GMT

Thank you, Hakon, I look forward to more information on this.

RE: nRF9161 DK SPI Flash example

Hakon — Wed, 20 Nov 2024 16:18:55 GMT

Hello,

[quote user=""](I found this)[/quote]

that one is for nrf9160 dk. Nrf9161 uses a different flash chip. There are a lot of samples that show how to setup this, including asset tracker v2. I can try to help you setup this tomorrow.