Problem with computing voltage using 8051 analog comparators

[mondoemme]

8051 Analog Comparators

Hi,

I'm newbie in programming anu using MCU 8051, can anyone help me to fix the above problem,

I have to use MCU analog comparator and an RC network to compute a measure
of voltage:


...

void InitComp(void)
{
UINT uiLoop;


//Disab Dig Input  pin 1 (CIN2B)  e 5 (CMPREF)  port 0
PT0AD = 0x22; // 00100010 

//Disab dig Out  pin 0 , 5 of port 0
P0M1 = 0xFE; //bit 0 --> Quasi Bid, bit 1-7 input only ;
P0M2 = 0x00; //


CMP2 = 0x32; 

// wait 10 msec  (RC-Oscillator 7.328MHz)   
for (uiLoop = 0; uiLoop < 10000; uiLoop++); 


   EC = 1;  //Enable Comp1 interrupt IEN1 bit 2
   EA = 1;//Enable all interrupts IEN0 bit 7

 } 

void main()
{
   whille (1);
}

// This Comp1 ISR is called whenever the comparator
// output changes state 
void v_CompInt(void) interrupt 8
{
   
   
   CMP2 = CMP2 & 0xFE; // clear CMF2-Flag 
   
   if (sbLED == 0)
      sbLED = 1;
   else
      sbLED = 0;

...

The code doesn't run but anyway when the ISR is called, how can I fetch the Voltage value?

Thanks in advance