Can I implement pairing with LESC enabled in nRF52810; SDK 15.2.0 v6.1.0 S112 ?

[Manish Kaul]

I’m using nRF52810 on a custom board (for our own application) using SDK 15.2.0 v6.1.0 S112. Given the amount of memory this chip has (192/24 KB) is it possible to implement pairing using LESC ?
The SoftDevice occupies 100KB of flash(0x00000-0x19000) and around 15KB of RAM(0x2000 0000 - 0x2000 3D00). Out of 92KB of remaining flash memory, my current application uses around 42.4KB and RAM uses ~6.6 KB out of the remaining ~9 KB of RAM. (picture attached-i)
I want to implement pairing in the current firmware and hence include all relevant files and modify the code.
My question is, is it possible to implement pairing (with LESC enabled) in this chip given the memory constraints and the amount of memory our application takes up ? Right now after including all the relevant files I'm getting linker errors for running out of memory (picture attached-ii, here I've stretched the Flash to it's maximum limits hence no memory error there).
Can you please help me out to either optimize memory or let me know where I can improve to achieve pairing using LESC ? ( IDE: IAR EWARM 8.32)

           i            ii.

[Manish Kaul]

One more thing, can we not implement link encryption using LESC on nRF52832 (PCA10040 S132) in SDK 14.0.0 ?

[Manish Kaul]

I verified by mistake. Please respond to the queries pending. Regards.

[Manish Kaul]

Jørgen Holmefjord said:

If you can post your full project, we can try to help you optimize the flash and RAM usage

Can you suggest some resources to learn from or suggest methods to do so ?

[Jørgen Holmefjord]

I'm not that familiar with IAR. Maybe you can ask their support if they can explain why you get these compilation errors?

Manish Kaul said:

Can you suggest some resources to learn from or suggest methods to do so ?

You would just need to remove unused modules and features. NRF_LOG is typically the first thing that needs to go if flash/RAM size is an issue.

Manish Kaul said:

Also, can you please explain what is this warning of wchar_t size being 16bits in library file ?

This is from the SDK release notes:

Note for IAR 8 users:
(Libraries for IAR 8 require wchar_t to be of size 32 bits while IAR 7 requires 16 bits).

Manish Kaul said:

One more thing, can we not implement link encryption using LESC on nRF52832 (PCA10040 S132) in SDK 14.0.0 ?

There is a LESC example in SDK 14.0.0 as well.

[Manish Kaul]

Jørgen Holmefjord said:

This is from the SDK release notes:

So how do I resolve this? I obviously can't edit the library file so how do I change wchar_t to 32 bits ?