pstorage didn't load correct data

[SamTsai]

Hi everybody,

I test the pstorage library. But it didn't work. I print the result with uart, as the image shows. But as you see, It has some problem. And I have no idea why.

I show the code In the following. I hope somebody can help me find which step went wrong.

By the way, I used the softdevice s110 v7.1.

Many thanks!

main function:

    uint8_t data[4]={1,2,3,4};
	uint8_t getdata[8];

	storage_init();
	clear_data();
	
	store_data(0,data,4,0);
	printf("store\r\n ");
	printf("%d ",data[0]);
	printf("%d ",data[1]);
	printf("%d ",data[2]);
	printf("%d \r\n",data[3]);
	
	load_data(0,getdata,4,0);
	printf("load \r\n ");
	printf("%d ",getdata[0]);
	printf("%d ",getdata[1]);
	printf("%d ",getdata[2]);
	printf("%d \r\n",getdata[3]);

function I used:

static void example_cb_handler(pstorage_handle_t  * handle,
                           uint8_t              op_code,
                           uint32_t             result,
                           uint8_t            * p_data,
                           uint32_t             data_len)
{
switch(op_code)
{
   case PSTORAGE_LOAD_OP_CODE:
       if (result == NRF_SUCCESS)
       {
           printf("OP successful\r\n");
       }
       else
       {
           printf("OP failed.\r\n");
       }
       // Source memory can now be reused or freed.
       break;

}
}

======

static pstorage_handle_t base_handle;
static void storage_init(void)
{
     uint32_t retval;
	retval = pstorage_init();
	if(retval == NRF_SUCCESS)
	{
			printf("Module initialization successful\r\n");
	}
	else
	{
		 printf("Initialization failed, take corrective action.\r\n");
	}
	pstorage_module_param_t param;
				
	param.block_size  = 16;
	param.block_count = 32;
	param.cb          = example_cb_handler;
			
	retval = pstorage_register(&param, &base_handle);
	if (retval == NRF_SUCCESS)
	{
			printf("Registration successful%d    %d.\r\n",base_handle.module_id,base_handle.block_id);
	}
	else
	{
			printf("Registration failed.\r\n");
	}

  }

=======

    static void load_data(pstorage_size_t block_num,
										uint8_t * dest_data,
										pstorage_size_t size,
										pstorage_size_t offset)
  {

pstorage_handle_t block_handle;
uint32_t          retval;

retval = pstorage_block_identifier_get(&base_handle, block_num, &block_handle);
if (retval == NRF_SUCCESS)
{
		printf("get block ID success.ID: %d\r\n",block_handle.block_id);
}
else
{
		printf("get block failed.\r\n");
}  
// Request to read 4 bytes from block at an offset of 12 bytes.
retval = pstorage_load(dest_data, &block_handle, size, offset);
if (retval == NRF_SUCCESS)
{
		printf("load success.\r\n");
}
else
{
		printf("load failed.\r\n");
}

    }

========

    static void store_data(pstorage_size_t block_num,
										 uint8_t * source_data,
										 pstorage_size_t size,
										 pstorage_size_t offset)
   {
pstorage_handle_t block_handle;
uint32_t          retval;

retval = pstorage_block_identifier_get(&base_handle, block_num, &block_handle);
if (retval == NRF_SUCCESS)
{
	printf("get block ID success.ID: %d\r\n",block_handle.block_id);
}
else
{
		printf("get block failed.\r\n");
}

// Request to write 8 bytes to block at an offset of 20 bytes.
retval = pstorage_store(&block_handle, source_data, size, offset);
if (retval == NRF_SUCCESS)
{
		printf("store success.\r\n");
}
else
{
		printf("store failed.\r\n");
}

    }

=======

    static void clear_data(void){
uint32_t          retval;    
// Request clearing of all blocks in the module. 32 blocks each with 16 bytes in size.
retval = pstorage_clear(&base_handle, 16 * 32);

if (retval == NRF_SUCCESS)
{
		printf("clear success.\r\n");
}
else
{
		printf("clear failed.\r\n");
}

    }

[SamTsai]

Hi

I found that I just forgot to add this code to dispatch a system event.

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

After I add it, the program worked fine.

Thanks for your help.