MSP430FR4133 Low Battery Voltage Periodic Monitoring

Question

Here is the code I used to configure and monitor my voltage that when it becomes 1.2V, BATTERY_ON symbol on my LCD is ON. The checking of voltage is every 10 seconds. This code below works using MSP430F427 microcontroller.

volatile unsigned char num_of_batt_check = 0;

void Init_Timer_A (void)
{
    TAR = 8192;                                     // (33 = 1ms)
    TACTL = TASSEL1 | ID_0 | MC_2 | TAIE;           // ACLK | input divider 0 | Continuous up mode | Interrupt enable
}

void Init_SVS (void)
{
    P2SEL |= SVS_PIN;                               // Select peripheral module function (supply voltage supervisor)
    P2DIR &= ~SVS_PIN;                              // Set SVSIN pin as input
        SVSCTL &= ~SVSFG;                           // Clear low voltage condition
    SVSCTL = VLD3 | VLD2 | VLD1 | VLD0;             // Set VLDx as 15 - 1111 for 1.2 Vref
}

void batt_check()
{
    if (SVSCTL & SVSOP)                            // Check SVS status, if SVS comparator high, set low power detected
    {BATT_ON;}                                     // Macro of battery symbol ON 

    else
    {BATT_OFF;}                                    // Macro of battery symbol OFF 

    num_of_batt_check = 0;
}

/************************************************/
/***************** Main function ****************/
/************************************************/

int main(void)
{
    WDTCTL = WDTPW | WDTHOLD;                      // stop watch-dog timer

    Init_SVS();
    Init_Timer_A();

    while (1)
    {
       if (num_of_batt_check >= 46)
       {
           batt_check();
       }
    }
}

I would like to ask on how can I implement this using MSP430FR4133. I have read that I can use the on-chip reference voltage fixed at 1.5V. My battery is also 1.5V and I only have to monitor when it becomes 1.2V and detect the voltage every 10 seconds. I am not sure on how to start with the right configuration. I am using an external crystal 32kHz.