Migrate the Persistent storage Manager to SDK MESH 4.0.0

[Andrea Pieretti]

I'm migrating my code from the MESH SDK 3.1.0 to 4.0.0
I'm using the following function to initialize a persistance storage controller

uint32_t pers_data_init(void)
{
  /* Adding custom data to flash for persistent storage */
  // 1) Flash manager is already initialized
  // 2) Add a new flash manager instance. NB: should not overlap (in region) the instance used by mesh.

  flash_manager_config_t custom_data_manager_config;
  custom_data_manager_config.write_complete_cb = write_complete_cb;
  custom_data_manager_config.invalidate_complete_cb = write_invalidate_cb;
  custom_data_manager_config.remove_complete_cb = remove_completed_cb;
  custom_data_manager_config.min_available_space = WORD_SIZE;

  // The new instance of flash manager should use an unused region of flash:
  custom_data_manager_config.p_area = (const flash_manager_page_t *)(((const uint8_t *)dsm_flash_area_get()) - (ACCESS_FLASH_PAGE_COUNT * PAGE_SIZE) - (NET_FLASH_PAGE_COUNT * PAGE_SIZE));

  custom_data_manager_config.page_count = APPLICATION_DATA_FLASH_PAGE_COUNT;

  uint32_t ret_code = flash_manager_add(&m_application_data_flash_manager, &custom_data_manager_config);

  if (NRF_SUCCESS != ret_code)
  {
    __LOG(LOG_SRC_APP, LOG_LEVEL_INFO, "Flash error: no memory\n", ret_code);
  }

  return ret_code;
}

The new SDK doesn't use the ACCESS_FLASH_PAGE_COUNT and the NET_FLASH_PAGE_COUNT Macros.
It doesn't support morevoer the dsm_flash_area_get() function.

How can i manage my persistent data with the new SDK?

Thanks

[Andrea Pieretti]

Please, I cannot use the new SDK 4.0.0 without solve this issue.

Thanks

[Joakim Jakobsen]

Hi. 

Sorry about the delay. 

This should be covered in the Migration guides (v3.1.0 -> v3.2.0 / v3.2.0 -> v4.0.0): 

https://infocenter.nordicsemi.com/topic/com.nordic.infocenter.meshsdk.v4.0.0/md_MIGRATION_GUIDE.html 

Best regards, 
Joakim

[ipshiv]

custom_data_manager_config.p_area = (const flash_manager_page_t *)(((const uint8_t *)dsm_flash_area_get()) - (ACCESS_FLASH_PAGE_COUNT * PAGE_SIZE) - (NET_FLASH_PAGE_COUNT * PAGE_SIZE));

Instead of dsm_flash_area_get() you should use flash_manager_recovery_page_get(), but I can't figure out is it needed to minus (ACCESS_FLASH_PAGE_COUNT * PAGE_SIZE) - (NET_FLASH_PAGE_COUNT * PAGE_SIZE).

Or you can try to use #include "mesh_config_backend_glue.h" mesh_config_backend_flash_usage_get()

If it's possible please share your success, my code is  crashing while runnig.