Implicit declaration of SoftDevice API functions

[Sascha Schmidt]

Hi,

I try to implement the access to the SoftDevice functions in an application. I started with the TWI example and want to implement fstorage module from the SDK (SDK15.2). I added all header files and now I get a implicit declaration error of the functions which lead to a SVCALL. I'm using GCC compiler.

Can anybody help me? Is there a tutorial how to implement the SD API functions?

Any help would be great!!

Kind regards and thanks in advance

Sascha Schmidt

[awneil]

As a general 'C' thing - not specific to Nordic - an "implicit declaration" error means that you have called a function without having previously declared that function.

So that must mean that you haven't #included the necessary header file(s).

The easiest way forward is to start with an example that has BLE working, and merge other stuff into that.

See: https://devzone.nordicsemi.com/b/blog/posts/merging-two-ble-examples-together

[Sascha Schmidt]

Hi, thanks for your reply and help!! I found out yesterday evening, that it is not a missing header file but misaligned header files. So the header files must be in the correct order (which was logical to me on closer consideration :))

Sure it would be easier to take an example where BLE or the SoftDevice is already implemented, but then I won't learn anything about that topic and how it's implemented :) If I found out how the order of the header files must be, I will post it here. Perhaps it then helps other people with the same problems.