TM4C129 Hibernation Module Interrupt every 5 Minutes

Hello Amit,

thank you for your fast answer.
I thought there would be something like a chime that rings every 5 minutes, but this way is also fine for me.

Hello Simon

Which TM4C device are you using?

Regards
Amit

TM4C129ENCPDT,
In the TivaC Documentation i found a way to set 0xFF to the tm->min structure, so the interrupt is called on every minute.
But i cant get this to work

void EK_TM4C129EXL_initHibernate(void) {
	SysCtlPeripheralEnable(SYSCTL_PERIPH_HIBERNATE);
	HibernateEnableExpClk(SysCtlClockGet());
	HibernateClockConfig(HIBERNATE_OSC_LOWDRIVE);
	HibernateRTCEnable(); // Enable RTC mode.
	HibernateCounterMode(HIBERNATE_COUNTER_24HR); // Configure the hibernate module counter to 24-hour calendar mode.
}

extern void hibernateInterrupt() {
	uint32_t hibStatus;
	hibStatus = HibernateIntStatus(false);
	HibernateIntClear(hibStatus);
}

void RTC_SetChime(struct tm *sTime) {

	uint32_t hibStatus;

	sTime->tm_hour = 0xFF;
	HibernateCalendarMatchSet(0, sTime);

    // Set the function to run on wake
    HibernateIntRegister(hibernateInterrupt);

	// Clear any pending status
	hibStatus = HibernateIntStatus(false);
	HibernateIntClear(hibStatus);

	// Enable the interrupt sources HIBERNATE_INT_PIN_WAKE | HIBERNATE_INT_LOW_BAT
	HibernateIntEnable(HIBERNATE_INT_RTC_MATCH_0);

}

if i call this function BIOS exits.

Hello Simon

How have you enabled the Interrupt from the Hibernate Module to the CPU. I am expecting to see something like IntEnable API call during configuration.

Regards
Amit

do you mean this Line: HibernateIntEnable(HIBERNATE_INT_RTC_MATCH_0);

Is it a Problem to use RTOS with the example code above?

Hello Simon,

No. This is an interrupt enable API and must be something like hwiInterrupt in terms of RTOS. I am not sure on the exact terminology/syntax in TI-RTOS, but basically this enabled the Interrupt to be acknowledged by the NVIC before alerting the CPU.

Regards
Amit

Amit, i searched for that in the RTOS Manual and found:

Hwi_enableInterrupt(UInt intNum);

I have no idea how to use that

Hello Simon

The Hibernate module interrupt number is 57. You may want to try with that!!!

This will allow the Interrupt Handler to be invoked when the interrupt is asserted which you can confirm by checking if the HIBMIS register.

Regards
Amit

Thank you Amit,
i'll try this tomorrow, and msg you about the results.