WDT driver

WDT driver. More...

Data Structures
struct	nrf_drv_wdt_config_t
	Struct for WDT initialization. More...

Macros
#define	NRF_DRV_WDT_DEAFULT_CONFIG

Typedefs
typedef void(*	nrf_wdt_event_handler_t )(void)
	WDT event handler function type.
typedef nrf_wdt_rr_register_t	nrf_drv_wdt_channel_id
	WDT channel id type.

Functions
ret_code_t	nrf_drv_wdt_init (nrf_drv_wdt_config_t const *p_config, nrf_wdt_event_handler_t wdt_event_handler)
	This function initializes watchdog. More...
ret_code_t	nrf_drv_wdt_channel_alloc (nrf_drv_wdt_channel_id *p_channel_id)
	This function allocate watchdog channel. More...
void	nrf_drv_wdt_enable (void)
	This function starts watchdog. More...
void	nrf_drv_wdt_feed (void)
	This function feeds the watchdog. More...
void	nrf_drv_wdt_channel_feed (nrf_drv_wdt_channel_id channel_id)
	This function feeds the invidual watchdog channel. More...
__STATIC_INLINE uint32_t	nrf_drv_wdt_ppi_task_addr (nrf_wdt_task_t task)
	Function for returning a requested task address for the wdt driver module. More...
__STATIC_INLINE uint32_t	nrf_drv_wdt_ppi_event_addr (nrf_wdt_event_t event)
	Function for returning a requested event address for the wdt driver module. More...

Detailed Description

WDT driver.

Macro Definition Documentation

#define NRF_DRV_WDT_DEAFULT_CONFIG

Value:

{ \
 .behaviour = WDT_CONFIG_BEHAVIOUR, \
 .reload_value = WDT_CONFIG_RELOAD_VALUE, \
 .interrupt_priority = WDT_CONFIG_IRQ_PRIORITY, \
 }

Function Documentation

ret_code_t nrf_drv_wdt_channel_alloc

(

nrf_drv_wdt_channel_id *

p_channel_id

)

This function allocate watchdog channel.

Note

This function can not be called after nrf_drv_wdt_start(void).

Parameters

[out]

p_channel_id

ID of granted channel.

Returns

NRF_SUCCESS on success, otherwise an error code.

void nrf_drv_wdt_channel_feed

(

nrf_drv_wdt_channel_id

channel_id

)

This function feeds the invidual watchdog channel.

Parameters

[in]

channel_id

ID of watchdog channel.

void nrf_drv_wdt_enable

(

void

)

This function starts watchdog.

Note

After calling this function the watchdog is started, so the user needs to feed all allocated watchdog channels to avoid reset. At least one watchdog channel has to be allocated.

void nrf_drv_wdt_feed

(

void

)

This function feeds the watchdog.

Function feeds all allocated watchdog channels.

ret_code_t nrf_drv_wdt_init	(	nrf_drv_wdt_config_t const *	p_config,
		nrf_wdt_event_handler_t	wdt_event_handler
	)

This function initializes watchdog.

Parameters

[in]	p_config	Initial configuration. Default configuration used if NULL.
[in]	wdt_event_handler	specifies event handler provided by user.

Note

Function asserts if wdt_event_handler is NULL.

Returns

NRF_SUCCESS on success, NRF_ERROR_INVALID_STATE if module ws already initialized.

__STATIC_INLINE uint32_t nrf_drv_wdt_ppi_event_addr

(

nrf_wdt_event_t

event

)

Function for returning a requested event address for the wdt driver module.

Parameters

[in]

event

One of the peripheral events.

Return values

Event

address

__STATIC_INLINE uint32_t nrf_drv_wdt_ppi_task_addr

(

nrf_wdt_task_t

task

)

Function for returning a requested task address for the wdt driver module.

Parameters

[in]

task

One of the peripheral tasks.

Return values

Task

address.