nRF51822 Flash read/write SDK v11

[Guillaume Levant]

Hi,

I am currently designin one of our product with a nRF51822 QFAC included, and I need to store 17k-bytes in a non-volatile memory.

I am writing the firmware using SDK v11, and I had a look at the flashwrite example using NVMC. In this example it seems that the function is only able to write one 32 bit value on one page. So I also checked the "ble_flash" driver that looks more suitable to my application.

My questions are the following :

Is it possible to store 17kB of data in the flash ?

Could you please tell me which library is the most optimized for my case ?

PS : BLE with SoftDevice will be enabled, so it have to work with it.

Best regards,

Guillaume

[Guillaume Levant]

Thanks @Einar Thorsrud, I will switch to fds ! @gortok: I had a look at your github, and I don't understand the purpose of the "friends_data_storage" files, that I suppose are files that you made on your own, correct ? Why do you use gap data to store data in flash ? Is it specific to your application ?

[gortok]

@Guillaume the stock example shows them writing a uint32_t value to flash; I was showing something a little more complicated.

[Guillaume Levant]

@gortok : Ok thanks, concerning the number of page that can be used, do you know the maximum value that can be set in FDS_VIRTUAL_PAGES ?

[saiteja]

is it possible to store float array[20][20] in FDS. i am unable to read it back.