pstorage_register() returning NRF_INVALID_PARAM

Question

Hi, I'm having a problem with calling pstorage_register(); The first I call pstorage_register() is just fine, but the second I call return the nrf_invalid_param.Here is the code: 
 #define PSTORAGE_NUM_OF_PAGES 2 
#define PSTORAGE_MAX_APPLICATIONS 10 
#define PSTORAGE_MIN_BLOCK_SIZE 4
#define PSTORAGE_MAX_BLOCK_SIZE 0x0400
#define PSTORAGE_CMD_QUEUE_SIZE 10
#define DATA_FLASH_SIZE 1024
#define DATA_FLASH_BLOCK 1

//page zero
param_j.block_size = DATA_FLASH_SIZE;
param_j.block_count = DATA_FLASH_BLOCK;
param_j.cb = data_pstorage_cb_handler;

err_code = pstorage_register(&param_j, &data_storage_handle[0]);
if (err_code == NRF_SUCCESS)
{
 err_code = pstorage_clear( &data_storage_handle[0], DATA_FLASH_SIZE );
}
	
//page one
err_code = pstorage_register(&param_j, &data_storage_handle[1]);
if (err_code == NRF_SUCCESS)
{
 err_code = pstorage_clear( &data_storage_handle[1], DATA_FLASH_SIZE );
}
	
//page two
err_code = pstorage_register(&param_j, &data_storage_handle[2]);
if (err_code == NRF_SUCCESS)
{
 err_code = pstorage_clear( &data_storage_handle[2], DATA_FLASH_SIZE );
}
	
//page three
err_code = pstorage_register(&param_j, &data_storage_handle[3]);
if (err_code == NRF_SUCCESS)
{
 err_code = pstorage_clear( &data_storage_handle[3], DATA_FLASH_SIZE );
}

Susheel Nuguru · Accepted Answer

You have only two pages reserved for whole pstorage. Try to increase it. 
 
 
 After registering you are doing a pstorage_clear, you are not checking the err_code against failures and also you are not waiting for this operation to complete before registering again. 
 
 
 Looking at pstorage code SDK 9.0 it does not seem that invalid param error can be returned here. Maybe i am looking at wrong SDK, which one are you using?