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WDT API Reference

WDT

wm_device_t *wm_drv_wdt_init(char *dev_name)

Initialize WDT dev, and configure wdt based on the device tree.

Parameters:

dev_name – [in] like “wdt”, if device tree set

Returns:

• device handle: device handle, used wm_device_t*

• NULL: failed

int wm_drv_wdt_deinit(wm_device_t *dev)

Deinit wdt.

Parameters:

dev – [in] use

• wm_device_t

Returns:

• WM_ERR_SUCCESS: succeed

• others: failed

int wm_drv_wdt_start(wm_device_t *dev)

Start wdt.

Parameters:

dev – [in] use

• wm_device_t

Returns:

• WM_ERR_SUCCESS: succeed

• others: failed

int wm_drv_wdt_stop(wm_device_t *dev)

Stop wdt.

Parameters:

dev – [in] use

• wm_device_t

Returns:

• WM_ERR_SUCCESS: succeed

• others: failed

int wm_drv_wdt_set_counter_value(wm_device_t *dev, uint32_t counter_value)

Set wdt counter value.

Parameters:

• dev – [in] use

  • wm_device_t

• counter_value – [in] wdt counter value, unit:microseconds

Returns:

• WM_ERR_SUCCESS: succeed

• others: failed

int wm_drv_wdt_get_counter_value(wm_device_t *dev, uint32_t *counter_value)

Get wdt counter value.

Parameters:

• dev – [in] use

  • wm_device_t

• counter_value – [out] wdt counter value. the unit is microseconds, which needs to be divided by apb clock

Returns:

• WM_ERR_SUCCESS: succeed

• others: failed

int wm_drv_wdt_get_remaining_time(wm_device_t *dev, uint32_t *remaining_time)

Get wdt remaining time.

Parameters:

• dev – [in] use

  • wm_device_t

• remaining_time – [out] wdt remaining value

Returns:

• WM_ERR_SUCCESS: succeed

• others: failed

int wm_drv_wdt_feed(wm_device_t *dev)

Wdt feed.

Parameters:

dev – [in] use

• wm_device_t

Returns:

• WM_ERR_SUCCESS: succeed

• others: failed