#include<reg52.h>
#define uint unsigned int
#define uchar unsigned char
sbit key1=P3^2;
typedef enum keystate{initstate,affirmstate,singlestate,repeatstate};// typedef enum±íʾ¶¨ÒåÁËÒ»¸öö¾ÙÐ͵ÄÊý¾Ý½á¹¹ ²»¸³ÖµµÄ»° ĬÈÏ {0 1 2 3}
// ³õʼ״̬£¬È·ÈÏ״̬£¬µ¥´Î´¥·¢×´Ì¬£¬Á¬Ðø´¥·¢×´Ì¬
typedef enum ledstate{D0,D1,D2,D3,D4,D5,D6,D7,D8};//Á÷Ë®µÆ8¸ö״̬ 0 1 2 3 4 5 6 7
void time0init()//¶¨Ê±Æ÷T0³õʼ»¯
{
TMOD=0X01; //T0·½Ê½1
TH0=(65536-10000)/256;//³õÖµ10ms
TL0=(65536-10000)%256;
TR0=1; //Æô¶¯¶¨Ê±Æ÷0
EA=1; //¿ª×ÜÖжÏ
ET0=1;//¿ªÆô¶¨Ê±Æ÷0
}
/*Ï£Íûº¯ÊýÖеľֲ¿±äÁ¿µÄÖµÔÚº¯Êýµ÷ÓýáÊøºó²»Ïûʧ¶ø±£ÁôÔÖµ,
¼´ÆäÕ¼ÓõĴ洢µ¥Ôª²»ÊÍ·Å,ÔÚÏÂÒ»´Îº¯Êýµ÷ÓÃʱ,¸Ã±äÁ¿ÒÑÓÐÖµ,
¾ÍÊÇÉÏÒ»´Îº¯Êýµ÷ÓýáÊøʱµÄÖµ.
ÕâÊǾÍÓ¦¸ÃÖ¸¶¨¸Ã¾Ö²¿±äÁ¿Îª"¾Ö²¿¾²Ì¬±äÁ¿",ÓÃstatic¼ÓÒÔ˵Ã÷*/
uchar keyscan(void) //°´¼üɨÃ躯Êý
{
staticuchar keystatevalue=0; //°´¼ü״ֵ̬ ¼ÓStaticÑÓ³¤Ê±¼äÖÜÆÚ×÷ÓÃÓò²»±ä
staticuchar presstime=0; //
uchar key_value; //°´¼ü״ֵ̬
uchar num;
key_value=key1; //¶ÁÈ¡°´¼ü״ֵ̬£¨0 1£©
switch(keystatevalue)
{
case initstate: //³õʼ״̬
if(key_value==0) //˵Ã÷°´¼ü°´ÏÂ
{keystatevalue=affirmstate;}//¼ÈÈ»°´¼ü°´Ï ¾Í±ä³ÉÈ·ÈÏ״̬
else
{keystatevalue=initstate;}//·ñÔò»¹Êdzõʼ״̬
break;
case affirmstate://È·ÈÏ״̬
if(key_value==0)
{
keystatevalue=singlestate; //±äΪµ¥´Î´¥·¢×´Ì¬
}
else
{
keystatevalue=initstate; // ¶¶¶¯Ã»ÓÐÏû³ýÍí£¬½øÈë³õʼ״̬
}
break;
case singlestate: //µ¥´Î´¥·¢×´Ì¬
presstime++; //Óö¨Ê±Æ÷ ÿ¹ý10ms¼Ó1´Î
if(presstime>100) //ʱ¼ä´óÓÚ1S Çл»µ½Á¬·¢×´Ì¬
{
presstime=0;
keystatevalue=repeatstate; //״̬Çл»µ½Á¬·¢
}
else if(key_value==1) //ʱ¼äСÓÚ1S²¢ÇÒÈç¹û°´¼üÊÍ·Å
{
keystatevalue=initstate;
num++; //µÆµÄ±ä»¯
if(num==8)
{
num=0;
}
}
break;
case repeatstate: //Á¬Ðø´¥·¢×´Ì¬
if(key_value==1) //Èç¹û°´¼üÊͷžͽøÈë³õʼ״̬
{
keystatevalue=initstate;
}
presstime++;
if(presstime>10)//ÿ¹ý100msÁ¬·¢Ò»´Î
{
presstime=0;
num++;
if(num==8)
{
num=0;
}
}
break;
default: keystatevalue=initstate; break;
}
return num;
}
void keypress() //°´¼ü´¦Àíº¯Êý
{
uchar keynum; //ÓÃÓÚ¶ÁÈ¡°´¼üɨÃèµÄ·µ»ØÖµ
if(TF0)//TF0=1ÓÐÒç³ö,˵Ã÷10msʱ¼äµ½
{
TF0=0;
TH0=(65536-10000)/256;//ÖØ×°³õÖµ
TL0=(65536-10000)%256;//ÖØ×°³õÖµ
keynum=keyscan();//¶ÁÈ¡°´¼üɨÃèµÄ·µ»ØÖµ£¬Ò²¾ÍÊÇ°´¼ü°´ÏÂʱµÄ²Ù×÷Öµ
}
switch(keynum)//¶Áµ½keynumµÄÖµ ÓÃÓÚÅжÏÄĸöָʾµÆÁÁ
{
case D0: P0=0XFE;break;
case D1: P0=0XFD;break;
case D2: P0=0XFB;break;
case D3: P0=0XF7;break;
case D4: P0=0XEF;break;
case D5: P0=0XDF;break;
case D6: P0=0XBF;break;
case D7: P0=0X7F;break;
default: P0=0XFF;break;
}
}
void main(void)
{
time0init();
while(1)
{
keypress();
}
}