pstorage store issue

Question

HI,all! 
 I recently using pstorage to store data 
 and the pstorage_store(); funtion always returns NRF_SUCCESS, but never triggle the cb_handler, is that normal? 
 by the way, i just sucessfully store the data once and never success again.(the loaded data is 0xff) 
 Can someone points out the problems? Thank you very much! 
 here is my code: 
 void mypstorage_init(void)
{
	uint16_t block=0;
	uint8_t flash2[16]={16,15,14,13,12,11,10,9,8,7,6,5,4,3,2,1};
	uint16_t size=16;
	uint16_t offset=0;
	pstorage_handle_t p_block_id;	

	cb_init mycbinit;

	pstorage_module_param_t p_example_param;

 // Setup pstorage with 60blocks of 16byte in each.
 p_example_param.block_size = 0x10; // recommended to be >= 4 byte
 p_example_param.block_count = 60;//60
 p_example_param.cb = mycbinit.example_cb_handler;
	pstorage_init();

	pstorage_register(&p_example_param, &m_p_example_id);

	pstorage_block_identifier_get(&m_p_example_id, block, &p_block_id);
	pstorage_store(&p_block_id,flash2,size,offset);
	
	pstorage_load(myflash2,&p_block_id,size,offset);
 
 } 
 typedef struct
{
 pstorage_ntf_cb_t example_cb_handler; 
} cb_init;

void example_cb_handler(pstorage_handle_t * p_handle,
 uint8_t op_code,
 uint32_t result,
 uint8_t * p_data,
 uint32_t data_len)
 {
 ;
 }

Nikita · Accepted Answer

pstorage_store(); funtion always
returns NRF_SUCCESS, but never triggle
the cb_handler, is that normal? 
 
 You need to init pstorage callback like this: 
 void mypstorage_init(void)
{
...
 p_example_param.cb = example_cb_handler;
 pstorage_init();
...

void example_cb_handler(pstorage_handle_t * p_handle,
 uint8_t op_code,
 uint32_t result,
 uint8_t * p_data,
 uint32_t data_len)
{
 ;
}
 
 
 by the way, i just sucessfully store
the data once and never success
again.(the loaded data is 0xff) 
 
 You are doing it wrong, if you do it like this: 
 pstorage_store(&p_block_id,flash2,size,offset);
pstorage_load(myflash2,&p_block_id,size,offset);
 
 Then when you call pstorage_store you just send request to store your data to pstorage and when this function will return with NRF_SUCCESS your data won't be stored in flash yet. It will be stored after a while and then pstorage will report this in callback example_cb_handler. And only after this you can try to load this stored data. 
 Read this . 
 UPD: 
 What do you mean by running out of control? 
 For the proper pstorage functioning you need to set sys events handler like this: 
 static void sys_evt_dispatch(uint32_t sys_evt)
{
 pstorage_sys_event_handler(sys_evt);
}

static void ble_stack_init(void)
{
...
 // Register with the SoftDevice handler module for SYS events.
 err_code = softdevice_sys_evt_handler_set(sys_evt_dispatch);
 APP_ERROR_CHECK(err_code);
}

pstorage store issue

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