ladderwave.c

来自「单片机开发资料光盘-双龙-686M.zip」· C语言 代码 · 共 24 行

#include <io8515.h>           
#define uchar unsigned char
#define uint unsigned int
void delay(uchar t)           
{
 uchar i;
 for (i=0;i<t;i++)
    ;
}
void main(void)               
{
 uchar c;
 DDRA=0xff;                   
 for (;;)
   {
    for (c=0x00;c<0xff;c++)  
        PORTA=c;             
    delay(255);              
    for (c=0xff;c>0x00;c--)  
        PORTA=c;             
    delay(255);              
    }                        
}