FLASH WRITE AND READ ISSUE

[Sadiya P]

Hello Sir,
when we are doing the flash write and read operation,the read function works well but while reading the we got hard fault.What is the reason for it .our ld script and used APIs are shown below.

Here we are using memcopy function to read from co6763.template_gcc_nrf52.ldrresponding address.

Write and read APIs used
 nrf_nvmc_write_words(ADDRESS, &data, 1);
memcpy(&data, ADDRESS, sizeof(data))

[Sadiya P]

Hello sir,

Now we have a update in flash write, after a number of single flash write we  gets issue hard fault.can you help for a proper flash and write operation in nrf52840 using nrfsdk.

[Sigurd Hellesvik]

Hi,

Most often you do not need to use the nvmc driver directly.
What is your goal here?

I recommend reading Persistent storage of keys and data using the nRF Connect SDK , it goes through methods for storing data in the nRF Connect SDK.

Regards,
Sigurd Hellesvik

[Sadiya P]

hello sir,

thank you sir.We have to store some information regarding project name and version and also some log information.we need to do it nrfsdk.

[Sigurd Hellesvik]

Sadiya P said:

we need to do it nrfsdk.

Do you mean the nRF5 SDK or the nRF Connect SDK?

[Sadiya P]

I mean nRF SDK ,not connect sdk

[Sadiya P]

Hello Sir,

This flash write and read issues getting from the board which constructed using the RF Tranceiver module of BMD-380-A-R.Is any issue Related to this?

[Hung Bui]

Hi Sadiya, 
I assume you meant nRF5 SDK , not nRFSDK ? correct ? 

Could you try printing out the LogCount value and the location of LOG_DATA_ADDRESS. 

I am not so sure you can do a flash read of more than one page at a time. 

If you do a simple 1 byte read with memcpy from a location in flash do you see the issue ? 

I don't think the BMD-380-A-R  has anything to do with the issue. But you can try to verify if you see the same problem with the nRF52840 DK ? 

[Sadiya P]

Hello,

Thank you for your valuable support ..its ready when tried with signed bit of read.

[Hung Bui]

Hi Sadiya, 
I don't fully get what you meant. Could you elaborate a bit more ?