MSP430F6659 internal ADC Issue

#include <msp430.h>

#define   Num_of_Results   8

volatile unsigned int A0results[Num_of_Results];
volatile unsigned int A1results[Num_of_Results];
volatile unsigned int A2results[Num_of_Results];
volatile unsigned int A3results[Num_of_Results];
volatile unsigned int A4results[Num_of_Results];
volatile unsigned int A5results[Num_of_Results];
volatile unsigned int A6results[Num_of_Results];

main()
{
	Init_ADC12();

	while(1)
	{
		CollectADCsamples();
	}

}

void Init_ADC12(void)
{
 
	P6SEL = 0x3F;                             // Enable A/D channel inputs

	REFCTL0 &= ~REFMSTR;
	ADC12CTL0 &= ~ADC12ENC;

	ADC12CTL0 = ADC12ON+ADC12MSC+ADC12SHT0_15+ADC12REFON; // Turn on ADC12, extend sampling time
                                      					 // to avoid overflow of results
	ADC12CTL1 = ADC12SHP+ADC12CONSEQ_1+ADC12CSTARTADD_0;   // Use sampling timer, sequence of channels

	ADC12MCTL0 =  ADC12INCH_0 + ADC12SREF_2;    
	ADC12MCTL1 =  ADC12INCH_1 + ADC12SREF_2;   
	ADC12MCTL2 =  ADC12INCH_2 + ADC12SREF_2;   
	ADC12MCTL3 =  ADC12INCH_3 + ADC12SREF_2;        			
	ADC12MCTL4 =  ADC12INCH_4 + ADC12SREF_2;                 
	ADC12MCTL5 =  ADC12INCH_5 + ADC12SREF_2;
	ADC12MCTL6 =  ADC12INCH_10+ ADC12SREF_2+ADC12EOS;

	ADC12IE = 0x40;                           // Enable ADC12IFG.3
	ADC12CTL0 |= ADC12ENC;                    // Enable conversions
	ADC12CTL0 |= ADC12SC;                     // Start convn - software trigger

	//__bis_SR_register(LPM0_bits + GIE);       // Enter LPM0, Enable interrupts
	__no_operation();                         // For debugger
  }


#pragma vector=ADC12_VECTOR
__interrupt void ADC12ISR (void)
{
  static unsigned int index = 0;
	
  switch(__even_in_range(ADC12IV,34))
  {
  case  0: break;                           // Vector  0:  No interrupt
  case  2: break;                           // Vector  2:  ADC overflow
  case  4: break;                           // Vector  4:  ADC timing overflow
  case  6: break;                           // Vector  6:  ADC12IFG0
  case  8: break;                           // Vector  8:  ADC12IFG1
  case 10: break;                           // Vector 10:  ADC12IFG2
  case 12: break;                                 // Vector 12:  ADC12IFG3
  case 14: break;                           // Vector 14:  ADC12IFG4
  case 16: break;									// Vector 16:  ADC12IFG5
  case 18: 
		A0results[index] = ADC12MEM0;           // Move A0 results, IFG is cleared
		A1results[index] = ADC12MEM1;           // Move A1 results, IFG is cleared
		A2results[index] = ADC12MEM2;           // Move A2 results, IFG is cleared
		A3results[index] = ADC12MEM3;           // Move A3 results, IFG is clearedA2results[index] = ADC12MEM2;           // Move A2 results, IFG is cleared
		A4results[index] = ADC12MEM4;           // Move A3 results, IFG is cleared
		A5results[index] = ADC12MEM5;           // Move A3 results, IFG is clearedA2results[index] = ADC12MEM2;           // Move A2 results, IFG is cleared

		l_Input_Sensor1_U16  = A0results[index];
		l_output_Sensor1_U16 = A1results[index];
		l_output_Sensor2_U16 = A2results[index];
		l_Spool_Sensor4_U16  = A3results[index];

		l_PVCount_U16 = A4results[index];
		l_SVCount_U16 = A5results[index];
		fl_temp_f     = A6results[index];

		index++;                                // Increment results index, modulo; Set Breakpoint1 here

		if (index == 8)
		{
		(index = 0);
		}
	
	break;									 // Vector 18:  ADC12IFG6
  case 20: break;                           // Vector 20:  ADC12IFG7
  case 22: break;                           // Vector 22:  ADC12IFG8
  case 24: break;                           // Vector 24:  ADC12IFG9
  case 26: break;                           // Vector 26:  ADC12IFG10
  case 28: break;                           // Vector 28:  ADC12IFG11
  case 30: break;                           // Vector 30:  ADC12IFG12
  case 32: break;                           // Vector 32:  ADC12IFG13
  case 34: break;                           // Vector 34:  ADC12IFG14
  default: break; 
  }  
}
void CollectADCsamples(void)
{
	static float  fl_PrevAverageSV_f=CLEAR;
    static float  fl_PrevAveragePV_f=CLEAR;
    
    static float  fl_PrevAverageinputsensor1_f=CLEAR;
    static float  fl_PrevAverageoutputsensor1_f=CLEAR;
    static float  fl_PrevAverageoutputsensor2_f=CLEAR;
    static float  PrevAverageSpool_Sensor4=CLEAR;

	fl_temp_f = (float)(((long)fl_temp_f - CALADC12_15V_30C) * (85 - 30)) /
	(CALADC12_15V_85C - CALADC12_15V_30C) + 30.0f;

	f1_temp_value_f = fl_temp_f;

	l_AverageSV_f = (fl_PrevAverageSV_f+((l_SVCount_U16-fl_PrevAverageSV_f)/1));       
	l_AveragePV_f = (fl_PrevAveragePV_f+((l_PVCount_U16-fl_PrevAveragePV_f)/1));

	l_Averageinputsensor1_f = (fl_PrevAverageinputsensor1_f+((l_Input_Sensor1_U16-fl_PrevAverageinputsensor1_f)/1));
	l_Averageoututsensor1_f = (fl_PrevAverageoutputsensor1_f+((l_output_Sensor1_U16-fl_PrevAverageoutputsensor1_f)/1));
	l_Averageoutputsensor2_f = (fl_PrevAverageoutputsensor2_f+((l_output_Sensor2_U16-fl_PrevAverageoutputsensor2_f)/1));
	l_AverageSpool_Sensor4 =   (PrevAverageSpool_Sensor4+((l_Spool_Sensor4_U16-PrevAverageSpool_Sensor4)/3));

	fl_temp_f1=fl_temp_f;
	fl_PrevAverageSV_f  =  l_AverageSV_f;
	fl_PrevAveragePV_f  = l_AveragePV_f;
		
	fl_PrevAverageinputsensor1_f=l_Averageinputsensor1_f;
	fl_PrevAverageoutputsensor1_f=l_Averageoututsensor1_f;
	fl_PrevAverageoutputsensor2_f=l_Averageoutputsensor2_f;
	PrevAverageSpool_Sensor4 = l_AverageSpool_Sensor4;

	ADC12CTL0 |= ADC12SC; 
	
}