How to store sensor data in internal flash memory?

[The_user_23]

Hi,

I am using the stts751 temp sensor with nrf52832 for temp data logging for short time. I want to save temp data in the internal flash memory but I didn't find any similar example.

Please guide me for the same and share any similar examples that I can refer to.

thanks

[Dmitry]

Hi,

you can look at FDS example in SDK.

[The_user_23]

thanx, I checked the FDS example and now I can save sensor data.

but it is not clear how much data I can save? and what will be the starting address of available space?

[Karl Ylvisaker]

Hello,

The_user_23 said:

I checked the FDS example and now I can save sensor data.

I am glad to hear that you are able to save your sensor data!

The_user_23 said:

but it is not clear how much data I can save? and what will be the starting address of available space?

The FDS library writes from the top of the flash to the bottom, and uses the CODE_START _END and _SIZE compile-time macros from app_util.h to determine how many flash pages is available. If I remember correctly the FDS example prints the number of available pages upon startup. You could take a look there to see how this is implemented.

Best regards,
Karl

[The_user_23]

the FDS library is adding 12 bytes with each record due to this I am not able to store as much data as I want (300kb). is there any way I can save without the header?

[Dmitry]

You can buffer your samples and write them, say, by 10 in one record.