xkey.c

来自「AVR单片机C语言编程及应用实例 适合初学者的学习研究 其中包含Atmega」· C语言 代码 · 共 39 行

#include <iom16v.h>
#include <macros.h>
#include "lesson5.c"
void main()
{
    uchar i;
        DDRD|=0X30;
	
	TCCR1A=0X63;
	TCCR1B=0X13;
	
	OCR1A=1249;
	OCR1B=31;
	
	while(1)
	{
	   if(key_press())
	   {
	       i=key_scan();
		   switch(i)
		   {
		     case 1:
			    OCR1B=31;
				break;
			 case 2:
			    OCR1B=62;
				break;
			 case 3:
			    OCR1B=93; 
				break;
			case 4:
			    OCR1B=124; 
				break;
			default:
			    OCR1B=31;		
		   }
	   }
	}
}