/*****************頭文件*****************************************/
#include <hidef.h> /* for EnableInterrupts macro */
#include "derivative.h" /* include peripheral declarations */

 /*********************變量和函數定義****************************/

unsigned int DATA;
void ADC_INI(void);
void IO_INIT(void);
 
 
 /*****************主函數*****************************************/
 void main(void) {

    EnableInterrupts; /* enable interrupts */
    /* include your code here */
  
    ADC_INI();
    IO_INIT();; 

    for(;;) {
   
        __RESET_WATCHDOG(); /* feeds the dog */
   
        ADC1SC1=0x28;  //選擇通道號，使能adc轉換
       
        while(!ADC1SC1_COCO)//
       
        __RESET_WATCHDOG();  
    
        DATA=ADC1R;
        if(DATA>=500)
            PTAD=0X02;
        else
            PTAD=0X00;
    
        ADC1SC1=0x1f; 
        
  } /* loop forever */
  /* please make sure that you never leave main */
}

/*****************adc中斷*****************************************/
interrupt 19 void   ADC_INT(void) {

    ADC1SC1_COCO=0;    // clear TOF清標志位 
 
}

/*****************adc初始化*****************************************/
void ADC_INI(void) {

    ADC1SC1=0x28;//選擇通道號，使能ADC  
    ADC1SC2=0x00;     
    ADC1CFG = 0x49;//四分頻、10位模式、時鐘源為總線時鐘/2  
    APCTL2=0b00000001;  //選擇管腳16（通道1