proteus仿真430的问题

miaozhendaoren

proteus仿真是不是不准啊？我弄不明白怎么有个高阻态啊？(原谅我,我很菜！！)我想实验一下比较器,但是结果不对啊,调试过来调试过去不知道什么问题？各位大神看下有问题吗？

1. 
   
2. #include <msp430f1121.h>
   
3. #define uchar unsigned char
   
4. 
   
5. void main(void)
   
6. {
   
7.   //stop WDT
   
8.   WDTCTL = WDTPW + WDTHOLD;
   
9.   //initial P2.0 to output, set it to HIGH as defalut
   
10.   P2DIR |= BIT0;
    
11.   P2OUT |= BIT0;
    
12.   
    
13.   
    
14.   //initial COMPARATOR A
    
15.   // Vcaref is applied to the '-' terminal
    
16.   // Vcaref = 0.50*Vcc
    
17.   CACTL1 = CARSEL + CAREF1 + CAON;
    
18.   //Pin2.3 to CA0 connected , Comparator_A output is filtered
    
19.   CACTL2 = P2CA0 + CAF;
    
20. 
    
21.   if (CACTL2 & CAOUT){//Voltage on CA0 higher than 0.50*Vcc
    
22.      P2OUT &= ~BIT0;  //LED-YELLOW light on  
    
23.   }else{              //Voltage on CA0 lower than 0.50*Vcc
    
24.      P2OUT |= BIT0;   //LED-YELLOW light off
    
25.   }
    
26.   
    
27.   while(1);
    
28. }
    

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miaozhendaoren

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