Confusion between nrf_ and nrfx_

Question

Hello, 
 I'm doing some clean up in my code and i wanted to use only nrfx library as it advised to do. Regarding the watchdog i have set in my app_config.g file (used by my sdk_config.h) the following flags : 
 #define NRFX_WDT_ENABLED 1
#define NRFX_WDT_CONFIG_BEHAVIOUR 0 // Watchdog will be paused in SLEEP and HALT 
#define NRFX_WDT_CONFIG_RELOAD_VALUE 5000 
 But if i don't add the following line : 
 #define WDT_ENABLED 1 
 It won't compile, is ti normal ? 
 Regards, 
 Aurélien

bjorn-spockeli · Accepted Answer

HI Aurélien, You need to remove the legacy config section from the sdk_config.h file if you're only using nrfx, i.e. remove the below lines // WDT_ENABLED - nrf_drv_wdt - WDT peripheral driver - legacy layer //========================================================== #ifndef WDT_ENABLED #define WDT_ENABLED 0 #endif // WDT_CONFIG_BEHAVIOUR - WDT behavior in CPU SLEEP or HALT mode // <1=> Run in SLEEP, Pause in HALT // <8=> Pause in SLEEP, Run in HALT // <9=> Run in SLEEP and HALT // <0=> Pause in SLEEP and HALT #ifndef WDT_CONFIG_BEHAVIOUR #define WDT_CONFIG_BEHAVIOUR 1 #endif // WDT_CONFIG_RELOAD_VALUE - Reload value <15-4294967295> #ifndef WDT_CONFIG_RELOAD_VALUE #define WDT_CONFIG_RELOAD_VALUE 2000 #endif // WDT_CONFIG_IRQ_PRIORITY - Interrupt priority // Priorities 0,2 (nRF51) and 0,1,4,5 (nRF52) are reserved for SoftDevice // <0=> 0 (highest) // <1=> 1 // <2=> 2 // <3=> 3 // <4=> 4 // <5=> 5 // <6=> 6 // <7=> 7 #ifndef WDT_CONFIG_IRQ_PRIORITY #define WDT_CONFIG_IRQ_PRIORITY 6 #endif // Otherwise, the apply_old_config.h file will undefine NRFX_WDT_ENABLED and set it to the same as WDT_ENABLED, which is zero, which in turn results in the nrfx_wdt.c not being compiled in, see below // from apply_old_config.h #if defined(WDT_ENABLED) #undef NRFX_WDT_ENABLED #define NRFX_WDT_ENABLED WDT_ENABLED Best regards Bjørn

Confusion between nrf_ and nrfx_

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