Assistance with FDS

RE: Assistance with FDS

schef — Wed, 08 Feb 2017 15:19:18 GMT

Yes i have tryed. I did't have to time to go deep into this problem. I wil come back when i grab some extra time. Thanks.

RE: Assistance with FDS

FormerMember — Wed, 08 Feb 2017 10:44:16 GMT

As it is put in a BLE example, it needs to be run with a softdevice present, S132 v.3.0.0.

RE: Assistance with FDS

schef — Tue, 07 Feb 2017 15:06:50 GMT

For some reason you code doesn't execute to end, i have turned on the DEBUG flag and waiting for the breakpoint but there is none. I will try to add your code to my project.

RE: Assistance with FDS

FormerMember — Tue, 07 Feb 2017 13:27:06 GMT

I have updated my answer.

RE: Assistance with FDS

schef — Tue, 07 Feb 2017 07:44:51 GMT

Am i doing something wrong? When i write i got Writing Record ID = 1 message. But it does not read anything. I have #define FILE_ID 0x0022 and #define REC_KEY 0x0022 as it is described on infocenter.nordicsemi.com/index.jsp

RE: Assistance with FDS

schef — Mon, 06 Feb 2017 13:38:37 GMT

In the code is a while loop. If it finds anything it enters the loop and prints out the content? Isn't that the procedure?

RE: Assistance with FDS

FormerMember — Mon, 06 Feb 2017 13:33:59 GMT

How do you check if the KEY/ID was found or not?

RE: Assistance with FDS

schef — Mon, 06 Feb 2017 13:32:03 GMT

Yes. This is the issue. That it did not find the KEY/ID. If you look at the code github.com/.../main.c you can see that it returns 0 and does not print the data if data is not found.

RE: Assistance with FDS

FormerMember — Mon, 06 Feb 2017 13:15:57 GMT

If you have a look at the fds_read() and the other fds test functions, they will return NRF_SUCCESS upon a successful operation/when it works correctly.

NRF_SUCCESS is defined the following way:

#define NRF_ERROR_BASE_NUM      (0x0)       ///< Global error base
#define NRF_SUCCESS                           (NRF_ERROR_BASE_NUM + 0)  ///< Successful command

It means that when fds_read returns '0', it returns NRF_SUCCESS.

RE: Assistance with FDS

schef — Mon, 06 Feb 2017 13:08:04 GMT

It returns 0.

RE: Assistance with FDS

FormerMember — Mon, 06 Feb 2017 12:50:13 GMT

Which error code does fds_read() return?

Update 07.02.2017: fds_read() should not return NRF_SUCCESS unless it successfully found the record, if it doesn't find the record, the error code should be returned.

static ret_code_t fds_read(void)
{
	#define FILE_ID     0x1111
	#define REC_KEY     0x2222
	fds_flash_record_t  flash_record;
	fds_record_desc_t   record_desc;
	fds_find_token_t    ftok ={0};//Important, make sure you zero init the ftok token
	uint32_t *data;
	uint32_t err_code;
	
	NRF_LOG_INFO("Start searching... \r\n");
	// Loop until all records with the given key and file ID have been found.
	while (fds_record_find(FILE_ID, REC_KEY, &record_desc, &ftok) == FDS_SUCCESS)
	{
			err_code = fds_record_open(&record_desc, &flash_record);
			if ( err_code != FDS_SUCCESS)
			{
				return err_code;		
			}
			
			NRF_LOG_INFO("Found Record ID = %d\r\n",record_desc.record_id);
			NRF_LOG_INFO("Data = ");
			data = (uint32_t *) flash_record.p_data;
			for (uint8_t i=0;i<flash_record.p_header->tl.length_words;i++)
			{
				NRF_LOG_INFO("0x%8x ",data[i]);
			}
			NRF_LOG_INFO("\r\n");
			// Access the record through the flash_record structure.
			// Close the record when done.
			err_code = fds_record_close(&record_desc);
			if (err_code != FDS_SUCCESS)
			{
				return err_code;	
			}
	}
	return NRF_SUCCESS;		
}

When fds_record() is running, does it print the starting string, "start searching"?

Could you test the example I have been using for the testing, so that it is easier to compare your results with my results? It is the example from github placed in ble_app_hrs (SDK 12.2),to be used with S132 v. 3.0.0: ble_app_hrs-fds-test-github.zip

In the sdk_config.h file, you can change the logging module to use RTT instead of UART.