nRF52840 + nRF SDK v17.009 Project with SDK as library

[PriyeshN]

Hi,

I want to create a fresh project in Keil with nRF SDK as static library included into application. I have created the project, but when I run, the code always stuck into "wait_for_flash_ready()" while the file is present in library, if I do "go to definition"  for this functions, it errors to not found.

In the same project and folder structure, if I remove the library and include SDK in the same build as application, things run all fine.

Is there any issue if I create SDK as library (.lib) file and include in the application? Is there any such template available for Keil?

Thanks & regards,

Priyesh

[Amanda Hsieh]

Hi Priyesh, 

Do you include the path as the following figure? 

This video shows how to add library and header file to KeiluVision5

https://www.youtube.com/watch?v=Zj-D5M6rH-k&ab_channel=MarianoCoromac

-Amanda H.

[PriyeshN]

Yes, I have already added the required files and library. It compiles successfully.

I have created a Keil project where I have added all the nRF related files from SDK and compiled them to form .lib file. I then included this .lib file in my application. Compiles successfully, but, during run-time, it always stuck in only one function ""wait_for_flash_ready()".

[Amanda Hsieh]

Hi Priyesh, 

Not sure what causes the issue. Is it possible to duplicate the project as the base?

-Amanda H.

[PriyeshN]

Can you elaborate it further? Not sure what does "base" mean.

[Amanda Hsieh]

Hi Priyesh, 

Sorry for the mistake. Please let me correct the answer. 

Not sure what causes the issue. I have never heard about anyone putting the whole SDK into a lib-file before.
Looks like the wait_for_flash_ready() function puts the chip in the system on mode, could be that something in the library prevents it from waking up again, but that is just speculations, I don't know what could cause that. 

Maybe the library was compiled without SOFTDEVICE present flag set, while project, where lib is included, has this flag set? (or the other way around):

/**@brief Sleep until an event is received. */
static void power_manage(void)
{
#ifdef SOFTDEVICE_PRESENT
(void) sd_app_evt_wait();
#else
__WFE();
#endif
}

The #ifdef part is handled during compilation if I'm not mistaken, maybe that one of the options is removed when compiled into a library. 

-Amanda H.

[PriyeshN]

Yes, I agree, maybe the reason why I could not find any material for library SDK on internet. I will also suggest the same to Nordic to provide project template with SDK as library as this will provide developers a clean and modular dev environment.

I'll check on SOFTDEVICE macro and will revert. Mostly I have kept the pre-processor definitions for application and library as same, but will again verify.

[PriyeshN]

Just confirmed, SOFTDEVICE_PRESENT is defined for library build. Can you guys try out this same at your end?

[Amanda Hsieh]

Hi Priyesh, 

Sorry for the delay. 

The SoftDevice Handler library module doesn't always work well with custom build setups like this. 

-Amanda H.

[PriyeshN]

Ok