pstorage_load returning 0xFFFF

Question

hi, 
 I need to store persistent data of about 32 bytes in flash, so tried using pstorage APIs (SDK v9.0 on nRF51822 -- 256KB ). 
 I followed the sample code given here . 
 I am getting call-backs, and it notifies that store event is successful (NRF_SUCCESS). But when I do pstorage_load , it returns all 0xFFFF. 
 I also tried disabling flash r/w protection --> nrf_nvmc_write_word (NRF_UICR_BASE + 4, 0xFFFF); 
 I even tried using sd_flash_write (), though it returns NRF_SUCCESS the flash memory (0x3F800) is not updated. 
 Please let me know the issue here or alternative methods. I already read most of the threads related to pstorage issues. 
 flash.c 
 flash.h

Petter Myhre · Accepted Answer

With pstorage_store() the returned NRF_SUCCESS only means that the store was successfully requested. 
 You will get an event with opcode PSTORAGE_LOAD_OP_CODE in the registered event handler when the store has actually completed. 
 For more information see Store Data in the Pstorage documentation . 
 Edit 25.11.2015: I see that you do a pstorage_clear() before you do pstorage_store() in store_device_name(). If you want to clear you should wait for PSTORAGE_CLEAR_OP_CODE before you do the store.

pstorage_load returning 0xFFFF

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