pstorage_register returning NRF_INVALID_PARAM after registration second module

[Konrad Traczyk]

Hi, I'm having a problem with registering more than one pstorage_handle_t. So far I believed that I can register as many pstorage_handle_t as I want, but the number of these handlers must be less than PSTORAGE_MAX_APPLICATIONS.

So my code looks like this:

void PStorageBlockHandlersInit()
{
	uint32_t err_code;
    pstorage_module_param_t	blockParams;


	blockParams.block_count = 1;
	blockParams.block_size  = sizeof(uint32_t);
	blockParams.cb 					= PStorage_SerialNumberRetVal_Handler;

	err_code = pstorage_register(&blockParams, &pstorage_serialnumber);
	RTC_Wait(1); //	Wait 125ms to be sure that the block for flashing serial number is registered
		
	//	The block parameters for both: the recent and the oldest readout pointers are the same so don't change them
	err_code = pstorage_register(&blockParams, &pstorage_recentDayReadoutPointer);
	RTC_Wait(1); //	Wait 125ms to be sure that the block for flashing serial number is registered

	
	err_code = pstorage_register(&blockParams, &pstorage_theOldestDayReadoutPointer);
	RTC_Wait(1); //	Wait 125ms to be sure that the block for flashing serial number is registered
	
	err_code = pstorage_register(&blockParams, &pstorage_currentPageStartPointer);
	RTC_Wait(1);
	
	err_code = pstorage_register(&blockParams, &pstorage_currentEventLogPointer);
	RTC_Wait(1);

	blockParams.block_count = EVENT_LOG_SIZE; 			// default 64
	blockParams.block_size  = sizeof(event_log_t);  // default 8 bytes
	blockParams.cb 					= PStorage_SerialNumberRetVal_Handler;

	err_code = pstorage_register(&blockParams, &pstorage_eventLog);
	RTC_Wait(1);
 }	

The first handler - pstorage_serialnumber registers just fine. But the second one returns NRF_INVALID_PARAMS.

Do I make a mistake assuming that I can register more than one pstorage_handle_t?

[Susheel Nuguru]

I am assuming now that you have PSTORAGE_MAX_APPLICATIONS defined as 6 NRF_ERROR_INVALID_PARAM for pstorage_register will be returned if your block size is different than the one allowed between PSTORAGE_MAX_BLOCK_SIZE and PSTORAGE_MIN_BLOCK_SIZE. Check your pstorage_platform.h file and verify that PSTORAGE_MIN_BLOCK_SIZE is 4 bytes. I am guessing that you have (PSTORAGE_MIN_BLOCK_SIZE = 0x10)

[Konrad Traczyk]

Thanks for your reply. Actually, I set PSTORAGE_MAX_APPLICATIONS to 8, PSTORAGE_MIN_BLOCK_SIZE to 4 and PSTORAGE_MAX_BLOCK_SIZE I left as a page size (0x400).

[Konrad Traczyk]

I just found out, that pstorage_register didn't work for the other handlers because of corrupted softdevice. After reflashing it everthing registers. However I found out, that each of the handlers takes exactly one page, regardless what size and block counts we set. Is that normal? If I want to store something about 500bytes, do I really have to register one handler and access specified blocks by offset?

[Susheel Nuguru]

what is your RTCWait funtiom, give it to me i can try it here

[Susheel Nuguru]

You are right, minum is one flash page per registered user. you can allocate one handler of 500bytes and block_count = 1, then you do not need to use offsets. blocks are useful for read/write of array of structured data. If you find it not useful for you, then just use single block for everything :)