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#include <REGX52.H>
#include "Delay.h"
#include "INT0.h"
#include "Timer0.h"
#include "Key.h"
sbit ChuFa= P1^0;
unsigned char n;
unsigned code LiangDu_tab[100]={100,200,300,400,500,600,700,800,900,1000,
1100,1200,1300,1400,1500,1600,1700,1800,1900,2000,
2100,2200,2300,2400,2500,2600,2700,2800,2900,3000,
3100,3200,3300,3400,3500,3600,3700,3800,3900,4000,
4100,4200,4300,4400,4500,4600,4700,4800,4900,5000,
5100,5200,5300,5400,5500,5600,5700,5800,5900,6000,
6100,6200,6300,6400,6500,6600,6700,6800,6900,7000,
7100,7200,7300,7400,7500,7600,7700,7800,7900,8000,
8100,8200,8300,8400,8500,8600,8700,8800,8900,9000,
9100,9200,9300,9400,9500,9600,9700,9800,9900,10000,
};
void main()
{
Timer0Init();
Int0_Init();
ChuFa=0;
while(1)
{
//等待中斷
}
}
void Int0_Routine(void) interrupt 0
{
ChuFa=1;
n=Key();
TL0 =65536-LiangDu_tab[n]%256; //設(shè)置定時(shí)初值
TH0 =65536-LiangDu_tab[n]/256; //設(shè)置定時(shí)初值
TR0=1;
}
void Timer0_Routine() interrupt 1
{
ChuFa=0;
Delay10us();
ChuFa=1;
TR0=0;
}
key（）：
#include <REGX52.H>
#include "Delay.h"
#include <INTRINS.H>
sbit KeyUp= P1^1;
sbit KeyDown= P1^2;
unsigned char Key()
{
unsigned char n=0;
unsigned char x=0;
unsigned char y=0;
if(KeyUp==0)
{
Delay(20);
while(KeyUp==0)
{
n++;
for(x=0;x<20;x++)
{
if(n>=99)n=99;
}
}
Delay(20);
n=n+5;
if(n>=99)n=99;
}
if(KeyDown==0)
{
Delay(20);
while(KeyDown==0)
{
n--;
for(y=0;y<20;y++)
{
if(n<=0)n=0;
}
}
Delay(20);
n=n-5;
if(n<=0)n=0;
}
return n;
}
程序這樣編的，外部中斷能進(jìn)去，定時(shí)器中斷好像沒作用，key.c我想寫的是，按下按鍵不松手就會(huì)一直n++亮度會(huì)遞增，按鍵松手就n+5亮度階梯增加，兩個(gè)功能一個(gè)是按下不松手亮度逐漸變化，一個(gè)是按下松手每按一下亮度變化一下 |
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