rectangularwave.~c

来自「单片机开发资料光盘-双龙-686M.zip」· ~C 代码 · 共 20 行

#include <io8515.h>
#define uchar unsigned char
#define uint unsigned int
void delay(uchar t)
{
 uchar i,j;
 for (i=0;i<t;i++)
    for (j=1;j;j++)
        ;
}
void main(void)               
{
 DDRA=0xff;                   
 PORTA=0xff;
 for(;;)
  {
   PORTA^=0x01;              
   delay(25);
  }                          
}