20160310_업무일지_정우민_펌웨어실습

펌웨어실습

#define DDRA       (*((volatile unsigned char *)0x21))         // 위표의 주소값
#define PINA        (*((volatile unsigned char *)0x20))
#define PORTA    (*((volatile unsigned char *)0x22))

int main(void)

{
     volatile unsigned long uiCnt;                                        // volatile :  휘발성의
 
     DDRA=0xff;
 
     while(1)

{
      for(uiCnt=0 ; 100000>uiCnt ; ++uiCnt);                    // 시간지연
      PORTA=0x08;                                                       
      for(uiCnt=0 ; 100000>uiCnt ; ++uiCnt);
      PORTA=0x40;

 }
 return 0;

}