fangbo._c

方波产生程序 megal128 iccavr开发平台

#include "iom128v.h"
void delay_1ms()
{unsigned int i;
for(i=0;i<1140;i++);
}
void delay_nms(unsigned int n)
{unsigned int i;
for(i=0;i<n;i++)
delay_1ms();
}
void main()
{unsigned int i;
DDRB=0x80;
PORTB=0XFF;
for(i=0;i;i++)
{PORTB=~PORTB;
delay_nms(1000);
}
}