/*!
* @brief override the RTC IRQ handler
*/
void RTC_IRQHandler(void)
{
if (RTC_HAL_HasAlarmOccured(RTC_BASE_PTR))
{
RTC_HAL_SetAlarmIntCmd(RTC_BASE_PTR, false);
}
}
void lp_ticker_set_interrupt(uint32_t now, uint32_t time) {
// On K64F, the compare value can be only set when the LPTMR is disabled
// However, disabling the LPTMR will automatically clear the LPTMR counter
// So we need to compensate for the time that already passed
lp_compare_value = time;
uint32_t ticks = time > now ? time - now : (uint32_t)((uint64_t)time + 0xFFFFFFFFu - now);
lp_lptmr_schedule_ticks = 0;
lp_ticker_lptmr_scheduled_flag = 0;
RTC_HAL_EnableCounter(RTC_BASE, false);
if (ticks > LPTMR_TIMER_MAX_VALUE) {
ticks -= RTC_PRESCALER_MAX_VALUE + 1 - RTC_HAL_GetPrescaler(RTC_BASE);
uint32_t seconds = RTC_HAL_GetSecsReg(RTC_BASE);
while (ticks > LPTMR_TIMER_MAX_VALUE) {
ticks -= RTC_PRESCALER_MAX_VALUE + 1;
seconds++;
}
RTC_HAL_SetAlarmReg(RTC_BASE, seconds);
RTC_HAL_SetAlarmIntCmd(RTC_BASE, true);
// the lp timer will be triggered once RTC alarm is set
lp_lptmr_schedule_ticks = ticks;
} else {
// restart counter, set compare
LPTMR_HAL_Disable(LPTMR0_BASE);
LPTMR_HAL_SetCompareValue(LPTMR0_BASE, ticks);
LPTMR_HAL_Enable(LPTMR0_BASE);
}
RTC_HAL_EnableCounter(RTC_BASE, true);
}
void LLWU_IRQHandler(void)
{
if (RTC_HAL_HasAlarmOccured(RTC))
{
RTC_HAL_SetAlarmIntCmd(RTC_BASE_PTR, false);
}
LLWU_HAL_ClearExternalPinWakeupFlag(LLWU_BASE_PTR, (llwu_wakeup_pin_t)BOARD_SW_LLWU_EXT_PIN);
}
static void rct_isr(void)
{
RTC_HAL_SetAlarmIntCmd(RTC_BASE, false);
RTC_HAL_SetAlarmReg(RTC_BASE, 0);
if (lp_lptmr_schedule_ticks) {
lp_ticker_lptmr_scheduled_flag = 1;
lp_ticker_schedule_lptmr();
}
}
void RTC_DRV_AlarmIntAction(uint32_t instance)
{
uint32_t rtcBaseAddr = g_rtcBaseAddr[instance];
if (s_rtcRepeatAlarmState != NULL)
{
s_rtcRepeatAlarmState->alarmTime.year += s_rtcRepeatAlarmState->alarmRepTime .year;
s_rtcRepeatAlarmState->alarmTime.month += s_rtcRepeatAlarmState->alarmRepTime.month;
s_rtcRepeatAlarmState->alarmTime.day += s_rtcRepeatAlarmState->alarmRepTime.day;
s_rtcRepeatAlarmState->alarmTime.hour += s_rtcRepeatAlarmState->alarmRepTime.hour;
s_rtcRepeatAlarmState->alarmTime.minute += s_rtcRepeatAlarmState->alarmRepTime.minute;
RTC_HAL_SetAlarm(rtcBaseAddr, &s_rtcRepeatAlarmState->alarmTime);
}
else
{
/* Writing to the alarm register clears the TAF flag in the Status register */
RTC_HAL_SetAlarmReg(rtcBaseAddr, 0x0);
RTC_HAL_SetAlarmIntCmd(rtcBaseAddr, false);
}
}
/*!
* @brief set alarm command.
*
* This function set the alarm which will be
* trigerred x secs later. The alarm trigger
* will print a notification on the console.
*/
static void cmd_alarm(uint8_t offsetSec)
{
uint32_t seconds = 0;
if ((offsetSec < 1) || (offsetSec > 60))
{
offsetSec = DEFAULT_ALARM_SECONDS;
}
RTC_HAL_GetDatetimeInSecs(RTC_BASE_PTR, &seconds);
seconds += offsetSec;
// set the datetime for alarm
// set alarm in seconds
RTC_HAL_SetAlarmReg(RTC_BASE_PTR, seconds);
// Activate or deactivate the Alarm interrupt based on user choice
RTC_HAL_SetAlarmIntCmd(RTC_BASE_PTR, true);
}
/*FUNCTION**********************************************************************
*
* Function Name : RTC_DRV_SetAlarm
* Description : sets the RTC alarm.
* This function will first check if the date time has correct format. If yes,
* convert the date time to seconds, and set the alarm in seconds.
*
*END**************************************************************************/
bool RTC_DRV_SetAlarm(uint32_t instance, rtc_datetime_t *alarmTime, bool enableAlarmInterrupt)
{
assert(alarmTime);
uint32_t rtcBaseAddr = g_rtcBaseAddr[instance];
uint32_t srcClock = 0;
uint32_t alrmSeconds = 0;
uint32_t currSeconds = 0;
/* Return error if the alarm time provided is not valid */
if (!(RTC_HAL_IsDatetimeCorrectFormat(alarmTime)))
{
return false;
}
RTC_HAL_ConvertDatetimeToSecs(alarmTime, &alrmSeconds);
/* Get the current time */
currSeconds = RTC_HAL_GetSecsReg(rtcBaseAddr);
if ((srcClock = CLOCK_SYS_GetExternalRefClock32kFreq()) != 32768U)
{
/* As the seconds register will not increment every second, we need to adjust the value
* programmed to the alarm register */
alrmSeconds = alrmSeconds / (32768U / srcClock);
}
/* Make sure the alarm is for a future time */
if (alrmSeconds < currSeconds)
{
return false;
}
/* set alarm in seconds*/
RTC_HAL_SetAlarmReg(rtcBaseAddr, alrmSeconds);
/* Activate or deactivate the Alarm interrupt based on user choice */
RTC_HAL_SetAlarmIntCmd(rtcBaseAddr, enableAlarmInterrupt);
return true;
}
void lp_ticker_init(void) {
if (lp_ticker_inited) {
return;
}
lp_ticker_inited = 1;
// RTC might be configured already, don't reset it
RTC_HAL_SetSupervisorAccessCmd(RTC_BASE, true);
if (!RTC_HAL_IsCounterEnabled(RTC_BASE)) {
// select RTC for OSC32KSEL
CLOCK_HAL_SetSource(SIM_BASE, kClockOsc32kSel, 2);
// configure RTC
SIM_HAL_EnableRtcClock(SIM_BASE, 0U);
RTC_HAL_Init(RTC_BASE);
RTC_HAL_Enable(RTC_BASE);
for (volatile uint32_t wait_count = 0; wait_count < 1000000; wait_count++);
RTC_HAL_SetAlarmIntCmd(RTC_BASE, false);
RTC_HAL_SetSecsIntCmd(RTC_BASE, false);
RTC_HAL_SetAlarmReg(RTC_BASE, 0);
RTC_HAL_EnableCounter(RTC_BASE, true);
}
vIRQ_ClearPendingIRQ(RTC_IRQn);
vIRQ_SetVector(RTC_IRQn, (uint32_t)rct_isr);
vIRQ_EnableIRQ(RTC_IRQn);
// configure LPTMR
CLOCK_SYS_EnableLptimerClock(0);
LPTMR0_CSR = 0x00;
LPTMR0_PSR = 0x00;
LPTMR0_CMR = 0x00;
LPTMR_HAL_SetTimerModeMode(LPTMR0_BASE, kLptmrTimerModeTimeCounter);
LPTMR0_PSR |= LPTMR_PSR_PCS(0x2) | LPTMR_PSR_PBYP_MASK;
LPTMR_HAL_SetIntCmd(LPTMR0_BASE, 1);
LPTMR_HAL_SetFreeRunningCmd(LPTMR0_BASE, 0);
IRQn_Type timer_irq[] = LPTMR_IRQS;
vIRQ_SetVector(timer_irq[0], (uint32_t)lptmr_isr);
vIRQ_EnableIRQ(timer_irq[0]);
}
/*FUNCTION**********************************************************************
*
* Function Name : RTC_DRV_SetAlarm
* Description : sets the RTC alarm.
* This function will first check if the date time has correct format. If yes,
* convert the date time to seconds, and set the alarm in seconds.
*
*END**************************************************************************/
bool RTC_DRV_SetAlarm(uint32_t instance, rtc_datetime_t *alarmTime, bool enableAlarmInterrupt)
{
assert(alarmTime);
bool ret = false;
uint32_t rtcBaseAddr = g_rtcBaseAddr[instance];
/* Return error if the alarm time provided is not valid */
if (!(RTC_HAL_IsDatetimeCorrectFormat(alarmTime)))
{
return ret;
}
ret = RTC_HAL_SetAlarm(rtcBaseAddr, alarmTime);
if (ret)
{
/* Activate the Alarm interrupt if user wishes to use interrupts */
RTC_HAL_SetAlarmIntCmd(rtcBaseAddr, enableAlarmInterrupt);
}
return ret;
}
void RTC_DRV_SetAlarmIntCmd(uint32_t instance, bool alarmEnable)
{
RTC_HAL_SetAlarmIntCmd(g_rtcBaseAddr[instance], alarmEnable);
}