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請(qǐng)教那位老師幫忙修重新改按鍵定義
我這個(gè)是一個(gè)加減計(jì)數(shù)器程序,現(xiàn)在是按jia=P3^1加一,按jian=P3^0減一, 麻煩老師幫忙修改成P3^0 加一個(gè)高電平時(shí),按P3^1加,P3^0加低電平時(shí),按P3^1減,萬(wàn)分感謝!!!!小弟在這先謝了!!!
#include<reg51.h>
#define leddata P1 //數(shù)碼管的段碼輸出
#define uchar unsigned char
#define uint unsigned int
float shu;
sbit jia=P3^1; //加一按鍵
sbit jian=P3^0; //減一按鍵
sbit qw=P3^2; //數(shù)碼管的千位
sbit bw=P3^3; //數(shù)碼管的百位
sbit sw=P3^4; //數(shù)碼管的十位
sbit gw=P3^5; //數(shù)碼管的個(gè)位
uchar code tab[]={0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90,0x88,0x83,0xc6,0xa1,0x86,0x8e};
uchar code distab[16]={0x40,0x79,0x24,0x30,0x19,0x12,0x02,0x78,0x00,0x10,0x08,0x03,0x46,0x21,0x06,0x0e};
void desplay();
void delay(uchar a) //延時(shí)函數(shù)
{
uchar x,y;
for(x=0;x<a;x++)
for(y=0;y<120;y++);
}
void key() //按鍵掃描函數(shù)
{
if(jia==0)
{
delay(50);
if(jia==0)
{
while(!jia)desplay();
if(shu>=9999)shu=0;
else shu=++;
}
}
if(jian==0)
{
delay(50);
if(jian==0)
{
while(!jian)desplay();
if(shu<=0)shu=9999;
else shu=--;
}
}
}
void desplay() //顯示函數(shù)
{sw=qw=bw=gw=0;
qw=1;
leddata=tab[(int)shu/1000];delay(6);qw=0;
P1=0xff;
bw=1;leddata=distab[(int)shu%1000/100];delay(6);bw=0;
P1=0xff;
sw=1;leddata=tab[(int)shu%100/10];delay(6);sw=0;
P1=0xff;
gw=1;leddata=tab[(int)shu%10];delay(6);gw=0;
P1=0xff;
}
void main() //主函數(shù)
{
while(1)
{
key();
desplay();
}
}
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