flash_manager works properly only after a reset

RE: flash_manager works properly only after a reset

Amanda Hsieh — Tue, 20 Jul 2021 07:15:04 GMT

Hi,

Sorry for the delay. The support staff is reduced during the summer holidays, and you may experience delayed answers.

Can you try the nRF-Command-Line-Tools to run nrfjprog -e before you load the image? Please let me know it can help or not.

-Amanda H.

RE: flash_manager works properly only after a reset

rogi1806 — Wed, 23 Jun 2021 06:49:57 GMT

Yes, I use custom board. I erase / restart program using Segger Embedded Studio debugger. The code look like this:

void flashStorage_init(){ 
    flash_manager_t flashManager;
    
    flash_manager_page_t * p_area;
    p_area = (flash_manager_page_t *)(((const uint8_t *) flash_manager_recovery_page_get()) 
                                           - (15 * PAGE_SIZE));

    const flash_manager_config_t config =
    {
        .write_complete_cb =      writeCb,
        .invalidate_complete_cb = invalidateCb,
        .remove_complete_cb =     removeCb,
        .min_available_space =    WORD_SIZE,
        .p_area =                 p_area,
        .page_count =             1
    };

    uint32_t ret = flash_manager_add(&flashManager, &config);
    __LOG(LOG_SRC_APP, LOG_LEVEL_INFO, "Return code from flash manager %d \n", ret);  
}

The problem appear in flash_manager_add -> flash_area_build -> reserve_action_buffer and that return NULL pointer which leads to an error NRF_ERROR_NO_MEM. After a restart program this method works as it should - there is no problem with initialization and then with writing or reading process.

RE: flash_manager works properly only after a reset

Amanda Hsieh — Tue, 22 Jun 2021 11:19:19 GMT

Hi,

Do you use a custom board or nRF52840DK? How do you erase the board and restart progam?

Could you step into flash_manager_add to see which function or code returns NRF_ERROR_NO_MEM?

Regards,

Amanda