pstorage_store vs pstorage_update

[Masa]

Hi.

I have been trying to store data in flash by using pstorage. What's the difference between pstorage_store and pstorage_update?

At the first time, I can save data by pstorage_store without error at the callback function. But if I try to save data again at the same block, the data is not saved even though there is no error at the callback function.

And when I use pstorage_update instead of pstorage_store, I get 0x11(Edited : NRF_ERROR_BUSY) error even though I don't get any error when I use the same data for pstorage_store.

Any idea on what is happenning here?

My development environment:

・nRF51822 Developer Kit

・iOS 7.1 iPhone5s

・nRF6310 Rev 1.4

・S110-SD-v6

[Masa]

Hi, RK. Thank you for your reply. You are right. That was a quite silly mistake.... The error means actually NRF_ERROR_BUSY as you mentioned.

But still I don't understand why I keep getting NRF_ERROR_BUSY error. I tried using nrf_delay_us and/or timer but still I get NRF_ERROR_BUSY error.

I also tried like this :

uint32_t    count  = 1; 
while(count > 0){
	pstorage_access_status_get(&count);
}

But this loop won't finish....

Do you know how to handle this issue?

Edit : It turns out that this is a bug of SDK(pstorage.c). Just add

retval = NRF_SUCCESS;

to line 379 of pstorage.c. It should look like this :

if (retval != NRF_ERROR_BUSY) {
     app_notify (retval); 
} else  {   
     // In case of busy next trigger will be a success or a failure event.           
     retval = NRF_SUCCESS;
}

[Masa]

You are welcome :) This is an official bug and the way to kill the bug was given by Nordic.