RTC_C not working in MSP430

Too little information.
1. Which example file are you using?
2. Are you using a launchpad kit or custom board?
3. What condition are you expecting to happen to cause the ISR to execute?

Hi Abhishek,

In addition to what Brian said, can you please check the 32 KHz sourcing into ACLK

Thanks and Regards
Nishant

#include <msp430.h>
volatile int sec,hr,min,day,mon,yr;

void main(void)
{
WDTCTL = WDTPW | WDTHOLD; // Stop WTD

// Initialize LFXT1
UCSCTL6 &= ~(XT1OFF); // Enable XT1
UCSCTL6 |= XCAP_3; // Internal load cap

// Loop until XT1, XT2 & DCO fault flag is cleared
do
{
UCSCTL7 &= ~(XT2OFFG | XT1LFOFFG | DCOFFG);
// Clear XT2,XT1,DCO fault flags
SFRIFG1 &= ~OFIFG; // Clear fault flags
} while (SFRIFG1 & OFIFG); // Test oscillator fault flag
//

P1OUT &= ~BIT0; // Clear P1.0 output
P1DIR |= BIT0; // Set P1.0 as output

//Enable the charger for AUXVCC3 with Pass_key, Charger Current
AUX3CHCTL = AUXCHKEY + AUXCHEN + AUXCHC_1 + AUXCHV_1;

// Configure RTC_C
RTCCTL0_H = RTCKEY_H; // Unlock RTC_C module
RTCCTL0_L |= RTCRDYIE | RTCTEVIE; // Enable RTC time event,
//int a= RTCCTL0_L; // read ready interrupt
RTCCTL1 |= RTCBCD | RTCHOLD | RTCMODE; // RTC enable BCD mode, RTC hold
// RTCTCCTL0 &= ~(TCEN); // Tamper Disable

RTCYEAR = 0x2011; // Year
RTCMON = 0x12; // Month
RTCDAY = 0x05; // Day
RTCDOW = 0x03; // Day of week
RTCHOUR = 0x14; // Hour
RTCMIN = 0x45; // Minute
RTCSEC = 0x50; // Seconds

RTCADOWDAY = 0x03; // RTC Day of week alarm
RTCADAY = 0x22; // RTC Day Alarm
RTCAHOUR = 0x23; // RTC Hour Alarm
RTCAMIN = 0x45; // RTC Minute Alarm

RTCCTL1 &= ~(RTCHOLD); // Start RTC calendar mode
RTCCTL0_H = 0; // Lock RTC_C module


*while( RTCRDY & RTCCTL1)
{
hr=RTCHOUR;
}

__bis_SR_register(GIE); // Enable Interrupts

while(1);
/{
unsigned int b;
b=RTCIV;

}

// __no_operation();
}

// RTC Interrupt Service Routine
#if defined(__TI_COMPILER_VERSION__) || defined(__IAR_SYSTEMS_ICC__)
#pragma vector=RTC_VECTOR
__interrupt void rtc_isr(void)
#elif defined(__GNUC__)
void __attribute__ ((interrupt(RTC_VECTOR))) rtc_isr (void)
#else
#error Compiler not supported!
#endif
{
switch (__even_in_range(RTCIV, 16))
{
case RTCIV_NONE: // No interrupts
break;
case RTCIV_RTCOFIFG: // RTCOFIFG
break;
case RTCIV_RTCRDYIFG: // RTCRDYIFG
{
P1OUT ^= 0x01; // Toggles P1.0 every second
sec=RTCSEC;
min=RTCMIN;
hr=RTCHOUR;
day=RTCDAY;
mon=RTCMON;
yr=RTCYEAR;

}
break;
case RTCIV_RTCTEVIFG: // RTCEVIFG
//__no_operation(); // Interrupts every minute
break;
case RTCIV_RTCAIFG: // RTCAIFG
//__no_operation(); // Interrupts every alarm event
break;
case RTCIV_RT0PSIFG: // RT0PSIFG
break;
case RTCIV_RT1PSIFG: // RT1PSIFG
break;
// case 14: break; // Reserved
case 16: break; // Reserved
default: break;
}
}

Hello,
Brian Boorman and Nishant_Bhaskar
I am using custom board and yes clock is working as expected because all of my other codes are working properly i have checked clock also and it is exactly 32Khz.
But it is not going into ISR.
please help...

RTCCTL0_L register is giving me value of 8 and 88 continuously even if i modify it or writing zero to it it makes it self 88 or 8 value..

which represents my RTCOFIE and RTCOFIFG....
which is 32-kHz crystal oscillator fault interrupt enable. This interrupt can be used as LPM3.5 wake-up event. But we are working on Vcc=3.3V why this interrupt is occuring?
I am not enabling this Oscillator fault interrupt why it is enabling itself?

Thank you

Linking duplicate thread: e2e.ti.com/.../453023
Let's try to keep the responses in this thread I linked to avoid duplication of effort - then everyone trying to answer you will be aware of all the information you have posted already.

Hi

I think you need one more external crystal 32kHz connected to xt1