About how to turn off the watchdog

[creator]

Hello

Current software version nrf5_ SDK_ 14.2.0_ 17b948a uses chip nrf52832

Because the product needs to sleep, turn off the watchdog when entering sleep

The function is not implemented. Please see the figure below

void nrf_drv_wdt_disable(void)
{
// ASSERT(m_alloc_index != 0);
// ASSERT(m_state == NRF_DRV_STATE_INITIALIZED);
nrf_wdt_int_disable(WDT_INTENSET_TIMEOUT_Disabled);
}

I'm looking forward to your reply. Thank you

[run_ar]

Hi,

Once the watchdog is enabled you cannot disable it unless the chip is reset. However you can configure it to run only if the cpu is running, but then you have to make sure you feed it once in a while in case the cpu do run (would be the case if you are using softdevice)

[creator]

Hello  

// <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 8

Is this the configuration

[run_ar]

Yes, You can use <8=> Pause in SLEEP, Run in HALT to to pause the watchdog when the cpu is not running. Or you can use <0=> Pause in SLEEP and HALT. It depends on how you want it to behave.

[creator]

Hello!

Add watchdog configuration WDT_ CONFIG_ Behaviour 8 or 0 is the same

The power consumption changes below 1mA,

If the watchdog is not added, the power consumption is always stable at 14ua,

So this configuration doesn't work. Do you know why?

Thank you for your reply

[run_ar]

How are you measuring the current consumption? and did you add a delay after enabling/reloading the WDT before entering system on idle? see-> Increased current consumption when configured to pause in System ON idle

[creator]

Hello, thank you for your support. Sleep 1 is OK