How do you "turn on" a file with a "_H" compiler directive?

RE: How do you "turn on" a file with a "_H" compiler directive?

haakonsh — Wed, 10 Oct 2018 07:29:34 GMT

The examples in the SDK all have their own sdk_config.h who the compiler have included in their search path, I suggest you use them as a template for your development.

RE: How do you "turn on" a file with a "_H" compiler directive?

apdobaj — Wed, 10 Oct 2018 00:02:52 GMT

It turns out the compiler was not using the correct version of sdk_config.h. Aside from adding the correct sdk_config.h file to the includes of the offending source file, how does one force the usage of one particular sdk_config.h?

RE: How do you "turn on" a file with a "_H" compiler directive?

haakonsh — Mon, 08 Oct 2018 11:17:06 GMT

What example are you based off, and what do I need to add in order to reproduce your issue?

RE: How do you "turn on" a file with a "_H" compiler directive?

apdobaj — Fri, 05 Oct 2018 13:16:11 GMT

By that you mean set CRC32_ENABLED and NRF_SORTLIST_ENABLED to 1 - yes, of course.

RE: How do you "turn on" a file with a "_H" compiler directive?

haakonsh — Fri, 05 Oct 2018 06:59:48 GMT

Have you enabled them in sdk_config.h?

RE: How do you "turn on" a file with a "_H" compiler directive?

apdobaj — Thu, 04 Oct 2018 13:40:22 GMT

OK, I'm clearly barking up the wrong tree. How do you get crc32_compute(...) to compile? In other words, how do you get NRF_MODULE_ENABLED(CRC32) to resolve true? Or NRF_MODULE_ENABLED(NRF_SORTLIST)?

RE: How do you "turn on" a file with a "_H" compiler directive?

MartinBL — Thu, 04 Oct 2018 07:43:15 GMT

Are you referring to the include guards? We use include guards like these in pretty much every header file in the SDK. E.g. like this in nrf_sortlist.h:

#ifndef NRF_SORTLIST_H
#define NRF_SORTLIST_H

....

#endif //NRF_SORTLIST_H

RE: How do you "turn on" a file with a "_H" compiler directive?

haakonsh — Thu, 04 Oct 2018 07:43:12 GMT

These are header guards, they prevent the compiler from compiling a header file more than once. F.ex. if two source files both includes the same header file the header guard prevents multiple declarations and definitions of functions, variables, constants, structs, etc.

There's nothing you need to do except enable the libraries and drivers you need in sdk_config.h.