Pure NRFX RTC code - how to?

[Mishka]

Hi,

I'm trying to adopt my nRF52832 projects to the nRF5 SDK version 15.2.0 and the NRFX drivers framework. I'm using a short app_config.h with NRFX_RTC_ENABLED and NRFX_RTC0_ENABLED only. Unfortunately, it won't work because it's locked on the legacy stuff from the integration/nrfx/legacy/apply_old_config.h. Particularly, the following chunk of defs in the apply_old_config.h are enforced to redefine my NRFX_RTC0_ENABLED because sdk_config.h has the default RTC_ENABLED value (defined as 0):

#if defined(RTC_ENABLED)

#undef NRFX_RTC_ENABLED
#define NRFX_RTC_ENABLED  RTC_ENABLED

#if defined(RTC0_ENABLED)
#undef NRFX_RTC0_ENABLED
#define NRFX_RTC0_ENABLED  RTC0_ENABLED
...

What would be the recommended way to enable the pure NRFX RTC without legacy code involved?

Thanks!

[Jørgen Holmefjord]

Hi,

I would recommend that you completely remove the legacy RTC config from sdk_config.h if switching to NRFX drivers. 

Alternatively, you can also make modify apply_old_config.h by only overwriting the settings if the legacy drivers was enabled:

#if defined(RTC_ENABLED) && (RTC_ENABLED == 1)

#undef NRFX_RTC_ENABLED
#define NRFX_RTC_ENABLED  RTC_ENABLED

Best regards,
Jørgen

[Jørgen Holmefjord]

Yes, that is also an alternative if you do not use legacy drivers for any peripherals.

[Mishka]

Uhm, libraries are still dependent on nrf_drv_* stuff. Patched the apply_old_config.h as you've suggested above:

sed -E 's/^(#if defined\(([A-Z_0-9]+_ENABLED)\))/\1 \&\& (\2 == 1)/' integration/nrfx/legacy/apply_old_config.h

Thanks!