NRF54L15 spi00 not working

[payalD]

Hello team,

I am using SPI00 of NRF54L15 to communicate with w25q32fv (spi Flash). Below is the configuration I set in .overlay file

&pinctrl {
    spi00_default: spi00_default {
        group1 {
            psels = <NRF_PSEL(SPIM_SCK, 2, 1)>,
                    <NRF_PSEL(SPIM_MOSI, 2, 2)>,
                    <NRF_PSEL(SPIM_MISO, 2, 4)>;
        };
    };
    spi00_sleep: spi00_sleep {
        group1 {
            psels = <NRF_PSEL(SPIM_SCK, 2, 1)>,
                    <NRF_PSEL(SPIM_MOSI, 2, 2)>,
                    <NRF_PSEL(SPIM_MISO, 2, 4)>;
					
            low-power-enable;
        };
    };
};

&spi00 {
	compatible = "nordic,nrf-spim";
	status = "okay";
    pinctrl-0 = <&spi00_default>;
    pinctrl-1 = <&spi00_sleep>;
    pinctrl-names = "default", "sleep";
	cs-gpios = <&gpio2 5 GPIO_ACTIVE_LOW>;
	w25q32fv: w25q32fv@0 {
		compatible = "jedec,spi-nor";
		reg = <0>;
		spi-max-frequency = <8000000>;
		label = "W25Q32FV";
		status = "okay";
		jedec-id = [ef 40 16];   /* optional but helpful */
		size = <0x400000>;       /* 4 MByte = 32 Mbit */
	};
};

And below is the code I am using to read the ID of the flash

void data_write_spi()
{
    if (!device_is_ready(spi_dev)) {
        printf("SPI device not ready");
        return;
    }
    
    uint8_t cmd[4];
    uint8_t rx[5];

    cmd[0] = 0x9F;

    struct spi_buf tx_bufs = {.buf = cmd, .len = 1};
    struct spi_buf rx_bufs = {.buf = rx, .len = 5};

    struct spi_buf_set tx = {.buffers = &tx_bufs, .count = 1};    
    struct spi_buf_set rx_set = {.buffers = &rx_bufs, .count = 1};

    k_msleep(5);
    int ret = spi_transceive(spi_dev, &spi_cfg, &tx, &rx_set);


    if (ret == 0) {
        printf("JEDEC ID: %02X %02X %02X %02x %02x", rx[0], rx[1], rx[2], rx[3], rx[4]);
    } else {
        printf("SPI transfer failed: %d", ret);
    }
}

I am getting the following error.

SPI transfer failed: -5

How can I fix this issue so I can use spi00 appropriately? Any help would be greatly appreciated.

Thanks,

Payal

[AHaug]

Hi Payal,

I assume that you're working on a custom board, but just to clarify could you verify if this is the case? If it's a custom board, did you have your design in for hardware review at any point in time? Which SDK version are you on? 

Kind regards,
Andreas

[payalD]

Hi,

AHaug said:

I assume that you're working on a custom board, but just to clarify could you verify if this is the case?

No. I am not using a custom board. I am using NRF54L15-DK, with SDK version 3.0.2

[AHaug]

So then you've changed out the external flash physically on the board? From the nRF54L15DK you can see the mx25r64 is the chosen external flash on the DK: https://github.com/nrfconnect/sdk-zephyr/blob/c118168a23f9b7e646e57f9f79094bef8b2365c8/boards/nordic/nrf54l15dk/nrf54l_05_10_15_cpuapp_common.dtsi#L114-L139 

Or do you have an extension board that you've connected to the GPIOs that the external flash uses on the DK, i.e P2.1, 2.2 and 2.4

Kind regards,
Andreas

[payalD]

AHaug said:

Or do you have an extension board that you've connected to the GPIOs that the external flash uses on the DK, i.e P2.1, 2.2 and 2.4

Yes, I have connected w25q32fv externally on the DK. Also, I have disabled mx25r64 in .overlay as follows,

&mx25r64 {
	status = "disabled";
};

[AHaug]

Noted,

Then the most likely cause is that you will have to disable the external memory in the Board Configurator app within nRF Connect for Desktop

 

By default, the SPI (P2.1, 2.2 and 2.4) lines connected to the mx25 will still be connected to the external flash, even if you disable the mx25 in the overlay. To free those GPIOs up for other things, such as with an external external flash, you also need to disable the external memory in the board configurator app.

Kind regards,
Andreas