XMC1100 RTC ALARM event

hello
tried looking for information/code to use reoccurring RTC alarms, but no luck
the alarm occurs once; also have a periodic event which works fine
i tried piecing this code:


.
.
.
  XMC_RTC_CONFIG_t
  rtc_cfg =
    {
      .alarm.seconds = 4,
      .prescaler = 0x7fffU
    };

  XMC_RTC_Init (&rtc_cfg);

  XMC_RTC_EnableEvent (XMC_RTC_EVENT_PERIODIC_SECONDS | XMC_RTC_EVENT_ALARM);
  XMC_SCU_INTERRUPT_EnableEvent (XMC_SCU_INTERRUPT_EVENT_RTC_PERIODIC | XMC_SCU_INTERRUPT_EVENT_RTC_ALARM);

  NVIC_SetPriority (SCU_1_IRQn, 3);
  NVIC_EnableIRQ (SCU_1_IRQn);

  XMC_RTC_Start ();
.
.
.
void
SCU_1_IRQHandler (void)
{
  status = XMC_SCU_INTERUPT_GetEventStatus ();
  if ((status & XMC_SCU_INTERRUPT_EVENT_RTC_PERIODIC) == 2)
    {
      XMC_GPIO_ToggleOutput (P0_5);
      XMC_SCU_INTERRUPT_ClearEventStatus (XMC_SCU_INTERRUPT_EVENT_RTC_PERIODIC);
    }
  if ((status & XMC_SCU_INTERRUPT_EVENT_RTC_ALARM) == 4)
    {
      XMC_GPIO_ToggleOutput (P0_6);
      XMC_SCU_INTERRUPT_ClearEventStatus (XMC_SCU_INTERRUPT_EVENT_RTC_ALARM);
    }
  NVIC_ClearPendingIRQ (SCU_1_IRQn);
}

not sure what else to try

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