Initialize the driver

Informative

How to bring the watchdog driver up. Binding rules: CHI-WDG-MUST-04 in Wdg — Requirements; signatures in API Reference.

Prerequisites

Before Wdg_Init, another module must have set up the watchdog’s operation clock (and, for an external watchdog, the bus driver it is controlled through). For the logical strategy, the upper layer also owns the timer used to call Wdg_FeedHw.

Bring the watchdog up

Wdg_Init(NULL_PTR);          /* initialises the driver + watchdog HW */

configPtr must be NULL_PTR — the configuration variant is selected at build time, not passed at runtime. Wdg_Init initialises the WdgDrv and the watchdog hardware, applying the configured default mode and initial timeout. After it returns, the watchdog is armed and must be serviced (see Refresh the timeout).

Note

The WdgDrv has no de-init and is typically a single instance per watchdog. Calling a service API before Wdg_Init — or calling Wdg_Init twice — raises WDG_DEVERR_DRIVER_STATE.