CCS/MSP430G2553: Debug Mode: Breakpoint prohibits the ADC to count up

#include <msp430g2553.h>

void configWDT(void);
void configClocks(void);
void configADC(void);
void configTimerA(void);
void faultRoutine(void);
void startADC(void);

int ekgON = 0;
int systemIsSetUp = 0;
volatile int tempRaw = 0;
int test_ISR_counter = 0;
int dummy1 = 0;



int main(void)
{
    configWDT();
    configClocks();
    _BIS_SR(GIE);
    systemIsSetUp = 1;


      P1DIR = 0x41;                             // P1.0 & 6 output (red/green LEDs) - just for indication right now, not important for any function
      P1OUT = 0;


    ekgON = 1;                                  //manually set: ekgON
    //while(ekgON == 0){}                       

    configTimerA();                             
    configADC();
    startADC();                               

    
    while(ekgON == 1){
        dummy1++;
    }                                                   /


    return 0;
}


void configWDT(void)
 {
 WDTCTL = WDTPW + WDTHOLD;                 // Stop watchdog timer
 }


void configClocks(void){
    if (CALBC1_1MHZ ==0xFF || CALDCO_1MHZ == 0xFF){
      faultRoutine();                          // If calibration data is erased
                                               // run FaultRoutine()
    }else{}                                     //what should be in FalseRoutine????

     BCSCTL1 = CALBC1_1MHZ;                    // Set range
     DCOCTL = CALDCO_1MHZ;                     // Set DCO step + modulation
     BCSCTL3 |= LFXT1S_2;                      // LFXT1 = VLO
     IFG1 &= ~OFIFG;                           // Clear OSCFault flag
     BCSCTL2 = SELM_0 + DIVS0 + DIVS1;         // MCLK = DCO = 1MHz - SMLCK = MCLK/8
}



void configADC(void){
    ADC10CTL0 = 0;
    ADC10CTL0 = SREF_1 + ADC10SR + REFON + ADC10ON + ADC10IE;           //Sample and Hold Time: 8*CLK (!!) - reduce sampling rate to 50ksps - internal Reference at 1,5V - ADC10 on - ADC10 interrupt enabled
    ADC10CTL1 = INCH_10 + SHS1 + CONSEQ1;                               //Input Channel TempSensor - Source is Internal CLock - Trigger sourced from TimerA Output Unit 0 - Repeated single channel conversion
}


void configTimerA(void){
    TACTL = TASSEL1 + MC0;                      // SMCLK - Up Mode
    TACCTL0 = OUTMOD_4;                         //Output Mode 4 (toggle)
    TACCR0 = 0x271;                             //625
}



void faultRoutine(void)
 {
   P1OUT = 0x01;                            // red LED on
   while(1);                                // TRAP
 }

#pragma vector=ADC10_VECTOR
__interrupt void ADC10_ISR (void){
   tempRaw = ADC10MEM;
   test_ISR_counter++;
}

void startADC(){
    ADC10CTL0 |= ENC + ADC10SC;                       // first conversion is started, afterwards the timerA triggers the ADC

}

Tool/software: Code Composer Studio

Hello, I am currently working with an MSP430G2553, which performs conversions with the ADC10 triggered by TimerA.

I created two expression to check the functionality of my programm:

- tempRaw: here I store the value from the Temperatur Sensor and wan to check the value with the expression

- test_ISR_counter: I want to check how often the the ISR routine of the ADC10 has been started

When I start the programm in debug mode the expression can not be read:  tempRaw unknown Could not read 0x0204: execution state prevented access (picture)

When I click the suspend button in debug Mode I can see values for both expressions (seems to fit to my programm) (picture)

Since I want to have my expressions updated automatically, I added an Breakpoint (--> refresh all windows) in the while loop. However, when I start the programm both expressions are not cahnged at all. (picture)

Now I have two questions:

1. Why do I get the error message "execution state prevented access"? Do I have to change something in my programm?

2. Why are my expressions not changed at all when I add an Breakpoint which is supposed to just update the expressions?

Thanks!

Markus