data read and write in internal flash of nrf52840 having softdevice

[Anupam]

Hi,

I have nrf52840 with softdevice and i want to write 12 byte of data at a time in internal flash,suppose i write 50 records and i have to also read it these data from flash.

how can i read and write data in internal flash having softdevice,is there any way to write data in flash except fstorage module or FDS module.

waiting from prompt reply.

[Simonr]

Hi

I suggest using the fstorage module for reading and writing data, as it is easy to use, and compatible with the Softdevice as well. Is there a reason you want another way to write/read data from flash than the modules that Nordic provides? You will have to use one of these modules in order to do flash operations when the SoftDevice is present.

Best regards,

Simon

[Anupam]

No,i want to use modules that nordic provides,so which is better fstorage or fds.

i want to start writing data in flash when 5% battery is left in device,each time i am writing 14 byte to flash,suppose i wrote 40 entries before battery drain fully and again on battery charge i want to  read all these whole data from flash and erase that section of flash.

can you suggest which will be better fstorage or fds for these,also want to know for fds for each time writing in flash i have to take different key,right??

[Simonr]

Hi

I would suggest using the fstorage module and basing your application on the storage flash storage example. I would also suggest checking out the SAADC peripheral in order to keep track of the battery life of your device. My colleague has explained how to do so in this post.

Best regards,

Simon