Use of Zephyr inbuilt APIs to Use External Flash with nRF9160

[AKO]

I am using MX25 external flash with nRF9160. I am unable to find the configuration to use the Zephyr APIs to access the flash. I am able to access it when I am using 

spi_write_dt funtion but for this I have to do some SPI configuration using the following structs

struct spi_config spi_cfg;

struct spi_cs_control cs_control;

My configuration for Flash in prj.conf

# SPI

CONFIG_SPI=y

CONFIG_SPI_NOR=y

# FLASH

CONFIG_FLASH=y

CONFIG_FLASH_MAP=y

Need some insight on how to use the zephyr-based APIs without doing any other configuration other than DT.

[Naeem Maroof]

Hi

You might want to look at Zephyr Flash sample that demonstrates the use of flash API:

Zephyr Flash Sample

[AKO]

I have checked this example but it didn't worked for me. When I was calling the flash_erase I was getting some wierd observation. 

This functions calls the following code:

static inline int z_impl_flash_erase(const struct device *dev, off_t offset,

                     size_t size)

{

    const struct flash_driver_api *api =

        (const struct flash_driver_api *)dev->api;

    int rc;

    rc = api->erase(dev, offset, size);

    return rc;

}

but here I see that no function is assigned to api->erase