nRF52 Rebooting During flash_erase Operation

Question

Hello,

I’m encountering an issue with my nRF52 device where it reboots during the flash_erase operation. Below is the relevant part of my code and the overlay configuration:

#define FLASH_PARTITION_ID FIXED_PARTITION_ID(storage_partition)

void init_flash(void)
{
    const struct flash_area *flash_area;
    int rc;

    rc = flash_area_open(FLASH_PARTITION_ID, &flash_area);
    if (rc != 0) {
        LOG_ERR("Failed to open flash area (err %d)", rc);
        return;
    }

    flash_dev = flash_area_get_device(flash_area);
    if (!device_is_ready(flash_dev)) {
        LOG_ERR("Flash device not ready");
        return;
    }

    uint8_t write_data[FLASH_TEST_SIZE] = {0xAA, 0xBB, 0xCC, 0xDD}; // Example data
    uint8_t read_data[FLASH_TEST_SIZE];

    LOG_INF("off_add = %lx, size= %d\n", flash_area->fa_off, flash_area->fa_size);

    // Erase the flash area before writing
    __disable_irq();
    rc = flash_erase(flash_dev, flash_area->fa_off, flash_area->fa_size);
    __enable_irq();
    if (rc != 0) {
        LOG_ERR("Flash erase failed (err %d)\n", rc);
        return;
    }

    // Write data to flash
    rc = write_flash(flash_dev, flash_area->fa_off, write_data, sizeof(write_data));
    if (rc != 0) {
        LOG_ERR("Flash write failed (err %d)\n", rc);
        return;
    }

    // Read data from flash
    rc = read_flash(flash_dev, flash_area->fa_off, read_data, sizeof(read_data));
    if (rc != 0) {
        LOG_ERR("Flash read failed (err %d)\n", rc);
        return;
    }

    // Verify the read data
    if (memcmp(write_data, read_data, sizeof(write_data)) == 0) {
        LOG_INF("Flash read/write verification succeeded\n");
    } else {
        LOG_ERR("Flash read/write verification failed\n");
    }
}

overlays config:

&flash0 {
    status = "okay";
    partitions {
        compatible = "fixed-partitions";
        #address-cells = <1>;
        #size-cells = <1>;

        storage1: partition@7a000 {
            label = "storage1";
            reg = <0x7a000 0x06000>; /* 44 KB partition */
        };
    };
};

project config:

CONFIG_FLASH=y

CONFIG_FLASH_MAP=y

CONFIG_FLASH_PAGE_LAYOUT=y

CONFIG_NVS=y

The device resets when it reaches the flash_erase function. I’ve tried disabling interrupts around the flash erase operation, but the issue persists. Here are some additional details:

The power supply is stable and sufficient.
The watchdog timer is disabled during the flash operation.
The flash driver configuration seems correct.

Could there be any specific configurations or settings that I might be missing?

Any help or suggestions would be greatly appreciated!

Thanks in advance.