27.8.1.1.3 Workflow

  1. Create a Watchdog module configuration struct, which can be filled out to adjust the configuration of the Watchdog. 
    struct wdt_conf config_wdt;
  2. Initialize the Watchdog configuration struct with the module's default values. 
    wdt_get_config_defaults(&config_wdt);
    Note: This should always be performed before using the configuration struct to ensure that all values are initialized to known default settings.
  3. Adjust the configuration struct to set the timeout period and lock mode of the Watchdog. 
    config_wdt.always_on      = false;
#if !((SAML21) || (SAMC21) || (SAML22))
    config_wdt.clock_source   = GCLK_GENERATOR_4;
#endif
    config_wdt.timeout_period = WDT_PERIOD_2048CLK;
  4. Setups the WDT hardware module with the requested settings. 
    wdt_set_config(&config_wdt);