how to use fstorage on nRF51 with SDK10

[Vincent]

ba_nRF51_spd.zipHi, I use nRF51422, SDK10, SD310 and fstorage fun beacuse I need save 10 uint32_t len datas to flash.

I did that....:

the callback fun

static void fs_callback(uint8_t           op_code,
                            uint32_t          result,
                            uint32_t  const * p_data,
                            fs_length_t       length)
{
   switch(op_code){
		 case FS_OP_NONE:
			  
		 break;
     case FS_OP_STORE:
        
     break;
     case FS_OP_ERASE:
        
     break;		 
	 }
}

initial fs_init in main()

    // Initialize S310 SoftDevice
    ble_ant_stack_init();
	
    // Initialize Bluetooth stack parameters.
    gap_params_init();
    advertising_init();
    services_init();
    conn_params_init();
		
    // Initialize ANT CSC TX channel.
    ant_SpeedTx_init();
    application_timers_start();

   
	  ret_code_t retval = fs_init();
    if (retval != NRF_SUCCESS)
    {
        // fs_init() failed, propagate the error.
        return retval;
    }

		flash_word_read(fs_config.p_start_addr, &data);
		m_ant_bsc.page_1.operating_time =data;
		if( m_ant_bsc.page_1.operating_time >= 0xFFFFFFFF){
			  m_ant_bsc.page_1.operating_time=0;
		}
....

}//main


    void flash_word_read(uint32_t* address, uint32_t* value)
{
    *value = *address;
}

and I read the data back always is 0xFFFFFFFF.

I put the fs_erase and fs_store in other application_time when the 3min I need save the data in flash.

retval =fs_erase(&fs_config, fs_config.p_start_addr,1);
  if (retval != NRF_SUCCESS)
{
    //return retval;
}
	
	m_ant_bsc.page_1.operating_time=6789;
  m_csc_obj.ant_op_time = m_ant_bsc.page_1.operating_time;
  retval = fs_store(&fs_config, fs_config.p_start_addr, &m_csc_obj.ant_op_time, 1);
	if (retval != NRF_SUCCESS)
{
    //return retval;
}

I modify the sd310 stack init make sure the sys_evt_dispatch does work.

static void ble_ant_stack_init(void)
{
   ...
//#ifdef BONDING_ENABLE
    // Register with the SoftDevice handler module for BLE events.
    err_code = softdevice_sys_evt_handler_set(sys_evt_dispatch);
    APP_ERROR_CHECK(err_code);
//#endif // BONDING_ENABLE
}

static void sys_evt_dispatch(uint32_t sys_evt)
{
    pstorage_sys_event_handler(sys_evt);
    fs_sys_event_handler(sys_evt);
}

Is there any thing I did wrong because when MCU power on I read the data once always 0xFFFFFFFF.

Thanks.

[Petter Myhre]

Have you checked if there are any returned errors from fs_erase() and fs_store? Are you getting any callsbacks? What are the event results of these?

[Vincent]

If I put the fs_store in the main. It has callback but I read it back use same flash address then always 0xFFFFFFFF. If I put the fs_erase in the main. It has no callback. But I need write the datas when my nRF51 application Time count to 15 mins. So I put the fs_erase and fs_store this order and together in my one of application timer.

I did set the debug to keil-c and I dont see any error happen. So I ask this question here. Is any way can check where I did wrong.

Thanks for you Comment.

[Petter Myhre]

If you get a callback when you call fs_store() this probably has a retval of NRF_SUCCESS (0x00000000), the operation could still fail, you need to check the result that comes with the FS_OP_STORE event.

You shouldn't call fs_store() just after you have called fs_erase(), you shouldwait for the erase operation to complete, wait for the FS_OP_ERASE event, before you call fs_store().

I know that fs_erase(&fs_config, fs_config.p_start_addr,1); will return an error, since 1 is not page size in words, 0x100 is. Try with that. You should be able to see this error if you use the debugger. Remember to turn off optimizations.

[Vincent]

ok, I will try it tomorrow and turn off optimizations. Does nRF51 in SDK10 s310 has other easy way to store datas in flash. Because I just need store 10 uint32_t datas.

Thanks

[Petter Myhre]

I believe this is the easiest way.