Confusion between nrf_ and nrfx_

[Aurele]

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]

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

// <e> WDT_ENABLED - nrf_drv_wdt - WDT peripheral driver - legacy layer
//==========================================================
#ifndef WDT_ENABLED
#define WDT_ENABLED 0
#endif
// <o> 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

// <o> WDT_CONFIG_RELOAD_VALUE - Reload value  <15-4294967295> 


#ifndef WDT_CONFIG_RELOAD_VALUE
#define WDT_CONFIG_RELOAD_VALUE 2000
#endif

// <o> WDT_CONFIG_IRQ_PRIORITY  - Interrupt priority
 

// <i> 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

// </e>

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

[Somesh Burkule]

Hi bjorn-spockeli,

Can you please tell me the difference between NRFX_WDT_ENABLED and WDT_ENABLED?

If I have setting for NRFX_WDT_CONFIG_RELOAD_VALUE  to 20000 and WDT_CONFIG_RELOAD_VALUE to 60000 so which value will be taken for wdt reload value?

I have enabled both in my application.