Flash read/write operation over NRF52810

[rajAsthana]

Hi,

I am using NRF52810, In my project I need to store Float value and uint32_t value in EEPROM/Flash for permanent storage (Non-volatile storage).

With SDK17 i am not getting any sample code to perform flash operation over NRF52810.

  So please suggest how to proceed.

Thanks,

Raj 

[Turnaev]

You can use FDS or Fstorage, or low level write.

See examples: 

NordicSDK\examples\peripheral\flash_fds

NordicSDK\examples\peripheral\flash_fstorage

NordicSDK\examples\peripheral\flashwrite

Good luck!

[rajAsthana]

Hi ,

I am using NordicSDK\examples\peripheral\flash_fstorage this example to write on flash,But when i called the function

rc = nrf_fstorage_init(&fstorage, p_fs_api, NULL); my code stucks and harf fault error comes.

I think i am passing wrong start and end address.

Please suggest how to set the start and end adress for read and write.

Thanks,

Raj

 

[rajAsthana]

Hi,

I am still waiting for your reply,

with debug log as shown below there is a problem in nrf_fstorage_init().

<info> app_timer: RTC: initialized.
<error> nrf_fstorage: p_api check failed in nrf_fstorage_init() with value 0xE.
<error> app: Fatal error

Thanks 

Raj

[Kenneth]

I think the examples flash_fstorage example show how to do this (depending on whether softdevice is enabled or not):

    NRF_LOG_INFO("fstorage example started.");

    nrf_fstorage_api_t * p_fs_api;

#ifdef SOFTDEVICE_PRESENT
    NRF_LOG_INFO("SoftDevice is present.");
    NRF_LOG_INFO("Initializing nrf_fstorage_sd implementation...");
    /* Initialize an fstorage instance using the nrf_fstorage_sd backend.
     * nrf_fstorage_sd uses the SoftDevice to write to flash. This implementation can safely be
     * used whenever there is a SoftDevice, regardless of its status (enabled/disabled). */
    p_fs_api = &nrf_fstorage_sd;
#else
    NRF_LOG_INFO("SoftDevice not present.");
    NRF_LOG_INFO("Initializing nrf_fstorage_nvmc implementation...");
    /* Initialize an fstorage instance using the nrf_fstorage_nvmc backend.
     * nrf_fstorage_nvmc uses the NVMC peripheral. This implementation can be used when the
     * SoftDevice is disabled or not present.
     *
     * Using this implementation when the SoftDevice is enabled results in a hardfault. */
    p_fs_api = &nrf_fstorage_nvmc;
#endif

    rc = nrf_fstorage_init(&fstorage, p_fs_api, NULL);
    APP_ERROR_CHECK(rc);

p_fs_api should point to either of nrf_fstorage_nvmc or nrf_fstorage_sd depending on whether softdevice is enabled or not.