/**************************************************************************//**
* @brief RTCC Interrupt handler which toggles GPIO pin.
*
* @return N/A
*****************************************************************************/
void RTCC_IRQHandler(void)
{
/* Clear interrupt source */
RTCC_IntClear(RTCC_IF_CC1);
/* Toggle GPIO pin. */
GPIO_PinOutToggle((GPIO_Port_TypeDef)gpioPortNo, gpioPinNo );
}
void isr_rtcc(void)
{
if (RTCC_IntGet() & RTCC_IF_CC0) {
if (rtc_state.alarm_cb != NULL) {
/* check if year matches, otherwise alarm would go off each year */
if (RTCC_BCD2Year(RTCC_DateGet()) + RTC_YEAR_OFFSET == rtc_state.alarm_year) {
rtc_state.alarm_cb(rtc_state.alarm_arg);
}
}
RTCC_IntClear(RTCC_IFC_CC0);
}
if (sched_context_switch_request) {
thread_yield();
}
}
void vPortSetupTimerInterrupt( void )
{
/* Configure the RTCC to generate the RTOS tick interrupt. */
/* The maximum number of ticks that can be suppressed depends on the clock
frequency. */
xMaximumPossibleSuppressedTicks = ULONG_MAX / ulReloadValueForOneTick;
/* Ensure LE modules are accessible. */
CMU_ClockEnable( cmuClock_CORELE, true );
/* Use LFXO. */
CMU_ClockSelectSet( cmuClock_LFE, cmuSelect_LFXO );
/* Enable clock to the RTC module. */
CMU_ClockEnable( cmuClock_RTCC, true );
/* Use channel 1 to generate the RTOS tick interrupt. */
RTCC_ChannelCCVSet( lpRTCC_CHANNEL, ulReloadValueForOneTick );
RTCC_Init( &xRTCInitStruct );
RTCC_ChannelInit( lpRTCC_CHANNEL, &xRTCCChannel1InitStruct );
RTCC_EM4WakeupEnable( true );
/* Disable RTCC interrupt. */
RTCC_IntDisable( _RTCC_IF_MASK );
RTCC_IntClear( _RTCC_IF_MASK );
RTCC->CNT = _RTCC_CNT_RESETVALUE;
/* The tick interrupt must be set to the lowest priority possible. */
NVIC_SetPriority( RTCC_IRQn, configLIBRARY_LOWEST_INTERRUPT_PRIORITY );
NVIC_ClearPendingIRQ( RTCC_IRQn );
NVIC_EnableIRQ( RTCC_IRQn );
RTCC_IntEnable( RTCC_IEN_CC1 );
RTCC_Enable( true );
#if( lpUSE_TEST_TIMER == 1 )
{
void prvSetupTestTimer( void );
/* A second timer is used to test the path where the MCU is brought out
of a low power state by a timer other than the tick timer. */
prvSetupTestTimer();
}
#endif
}
int rtc_set_alarm(struct tm *time, rtc_alarm_cb_t cb, void *arg)
{
rtc_state.alarm_cb = cb;
rtc_state.alarm_arg = arg;
rtc_state.alarm_year = time->tm_year;
/* disable interrupt so it doesn't accidentally trigger */
RTCC_IntDisable(RTCC_IEN_CC0);
/* set compare registers */
RTCC_ChannelDateSet(0,
RTCC_Channel_Month2BCD(time->tm_mon) |
RTCC_Channel_Day2BCD(time->tm_mday));
RTCC_ChannelTimeSet(0,
RTCC_Channel_Hour2BCD(time->tm_hour) |
RTCC_Channel_Minute2BCD(time->tm_min) |
RTCC_Channel_Second2BCD(time->tm_sec));
/* enable the interrupt */
RTCC_IntClear(RTCC_IFC_CC0);
RTCC_IntEnable(RTCC_IEN_CC0);
return 0;
}
inline void lp_ticker_clear_interrupt()
{
RTCC_IntClear(RTCC_IF_CC0);
}
