MSP430F5529 USB-Exp-Board ADC

Hello everyone!

I have a big Problem using the 12 Bit ADC on my MSP-EXP430F5529. Ref. Vol. is 2,5 V. But If i am trying to measure i get at about 0,5 V the maximum of 4095 . I am using the Pin 7.0 (ADC Channel 12). I connected my device at 7.0 and GND.

My Code is:

#define ADC_PORT_SEL  P7SEL#define ADC_INPUT_A12  BIT0char display[10];

uint32_t messung;

/***************************************************************************//** * measure ******************************************************************************/void mess(void)
{
  buttonsPressed = 0;  
  Dogs102x6_clearScreen();
  ADC12CTL0 |= ADC12SC; // start conversionwhile ((ADC12CTL1 & ADC12BUSY) == 1);                 // ready?
      messung = (ADC12MEM0);
      my_itoa(messung,display);return;
}/***************************************************************************//** * measure prep. ******************************************************************************/void messprep(void)
{
P7SEL |= 0x01;
REFCTL0 & = ~REFMSTR;
 ADC12CTL0 = ADC12ON + ADC12SHT0_15 + ADC12MSC + ADC12REFON + ADC12REF2_5V;  // turn on, multi konversions, ref. to 2,5V
  ADC12CTL1 = ADC12SHP;
  ADC12MCTL0 = ADC12SREF_1+ADC12INCH_12;  
  ADC12CTL0 |= ADC12ENC;       // beginreturn;
}/***************************************************************************//** * eo measure ******************************************************************************/void messend(void)
{
   ADC12CTL0 &= ~ADC12ENC;                            // Disable conversions
   ADC12CTL0 &= ~ADC12ON;                             // ADC12 offreturn;
}/***************************************************************************//** * itoa von mikrocontroller.net ******************************************************************************/void my_itoa(int32_t zahl, char* string) //mikrocontroller.net
{
  uint8_t i;
    string[11]='\0';                  // String Terminatorif( zahl < 0 )             // negative?
    {                  
      string[0] = '-';              
      zahl = -zahl;
   }else string[0] = ' ';             // Zahl ist positivfor(i=10; i>=1; i--) 
    {
      string[i]=(zahl % 10) +'0';     // Modulo rechnen, dann den ASCII-Code von '0' addieren
      zahl /= 10;
    }
}


Has anyone of you ever tried to use the ADC on the MSP-EXP430F5529? Is it even possible because of the capacitors witch were built into the board?

I hope someone can help me!