Error with prf/nrfx_prs.h file

Question

Hi. I'm using nRF52832 (SDK 15.0.0) 
 Recently, I'm merging UART and twi sensor examples and I have this kind of error. 
 
 This above capture is about twi sensor. I have " 'prs/nrfx_prs.h' not found " error, but I can compile without any error. ( in nrfx_twim.c file ) 
 However when I merge with UART example I have same " 'prs/nrfx_prs.h' not found " error and also compile error. Like below capture. 
 
 I added nrfx_prs.h file into my UART example. So I really can't understand why this happens. 
 Please help! 
 Thanks

Edvin · Accepted Answer

Hello, 
 Regarding the first screenshot, that is just Keil being buggy sometimes. If it says that it can't find the file, but you can compile, then you can ignore it. The compiler can find the file, it is just Keil that bugs out sometimes. In those cases, you can ignore it. In my Keil window, I usually have this behavior. 
 
 As for the other screenshot, that gives a compiling error: 
 I see that you have moved the nrfx_twim.c file from it's original location in the SDK (into ...\extra
rfx_twim.c). That is ok, but then you have to include the path to the nrfx_prs.h. 
 The reason for why it works without moving this file is because in the SDK, the nrfx_twim.c is located in 
 SDK\modules
rfx\drivers\src 
 while the nrfx_prs.h is located in 
 SDK\modules
rfx\drivers\src\prs\ 
 On line 51 in nrfx_twim.c the include state describes the path to the file, so the compiler understands where to look. Since it is not in the same relative path, it will not find it. 
 
 Either include the file like this: 
 #include "nrfx_prs.h", and include the path to the file in your project settings ->C/C++-> Include paths 
 or 
 #include "prs/nrfx_prs.h" and copy the file into a folder inside "extra" called "prs".

Best regards, 
 Edvin

Error with prf/nrfx_prs.h file

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