Zephyr nRF52 flash driver

[jlz]

I plan to use the flash device driver from Nordic (52840) in a Zephyr system. My plan is to use the <flash.h> api but it seams that this api is not available in a default configuration.

I have experimented with this parameters from the project::

CONFIG_FLASH_NRF=y
CONFIG_FLASH_HAS_DRIVER_ENABLED=y

And it's obviously not working because ->

flash_dev = device_get_binding(FLASH_DEV_NAME);

returns NULL.

[Vidar Berg]

Hi,

Can you instead send this question to the Zephyr mailing list?  

https://lists.zephyrproject.org/g/users.  

I can look into this if not, but it will probably take longer time.    

[jlz]

Sure, But this is not really a Zephyr component because it's part of the Nordic device driver implementation. I do agree that CONFIG_ flags is part of Zephyr but the NOR driver is Nordic. I have not used Nordics NOR driver before so I'm not sure witch part needs to be configured from a default state. I can see a that the flash geometry is there but still exception error in write_op().

[emdi]

You could try to run zephyr/samples/drivers/soc_flash_nrf to see if that is working and confirm whether it's a problem with the driver or its use in your application. As Vidar suggested though, you should try to ask on the Zephyr mailing list or IRC. The file you are debugging is indeed 100% part of Zephyr and not of the "Nordic device driver implementation" (I guess you meant nrfx).

[jlz]

I solved the issue with this hidden flag:

CONFIG_MPU_ALLOW_FLASH_WRITE=y