compare._c

来自「AVRkaifashili.rar」· _C 代码 · 共 18 行

//***************FileName:Capature.C***************//
//***************ICCAVR V6.30编译*****************//

#include <io8535v.h>                 
#define uchar unsigned char
#define uint  unsigned int

void main(void)
{uchar i;
 DDRB=0xf0;                    //设置PB7输出，PB3~PB2输入
 PORTB=0x00;
 ACSR=0x00;                    //模拟比较器使能
 while(1)
  {if((ACSR&0x20)==0x20)
       PORTB=PORTB|0xf0;
   else PORTB=PORTB&0x0f;
}