#include<reg52.h>
#define unint unsigned int
void delay();
void anjian();
void frun();
void zrun();
code unsigned char runz[8]={ 0x03,0x0b,0x09,0x0d,0x0c,0x0e,0x06,0x07}; //正轉(zhuǎn)動數(shù)組
code unsigned char runf[8]={ 0x07,0x06,0x0e,0x0c,0x0d,0x09,0x0b,0x03}; //反轉(zhuǎn)動數(shù)組
code unsigned char seg7code[10]={ 0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90}; //顯示段碼 數(shù)碼管字跟：
unsigned char a,b,s,i,j,k,z,gw,sw,bw,speed,m;
int y=31;//定義轉(zhuǎn)動速度，數(shù)值越大電機轉(zhuǎn)速越慢反之則快
sbit P2_0=P2^0;//正轉(zhuǎn)按鍵
sbit P2_1=P2^1;//反轉(zhuǎn)按鍵
sbit P2_2=P2^2;//加速按鍵
sbit P2_3=P2^3;//減速按鍵
sbit P1_7=P1^7;
main()
{ P1_7=0;
a=0;
b=0;
while(1)
{
if(P2_0==0)
{
while(!P2_0);
b=1;
P0=seg7code[1];
}
if(P2_1==0)
{
while(!P2_1);
b=2;
P0=seg7code[2];
}
anjian();
switch(b)
{
case 0: break;
case 1: frun();break;
case 2: zrun(); break;
default:break;
}
switch(y)
{
case 7:speed=100;break;
case 9:speed=99;break;
case 11:speed=98;break;
case 13:speed=97;break;
case 15:speed=96;break;
case 17:speed=95;break;
case 19:speed=94;break;
case 21:speed=93;break;
case 23:speed=92;break;
case 25:speed=91;break;
case 27:speed=90;break;
case 29:speed=89;break;
case 31:speed=88;break;
case 33:speed=87;break;
case 35:speed=86;break;
case 37:speed=85;break;
case 39:speed=84;break;
case 41:speed=83;break;
case 43:speed=82;break;
case 45:speed=81;break;
case 47:speed=80;break;
case 49:speed=79;break;
case 51:speed=78;break;
case 53:speed=77;break;
case 55:speed=76;break;
case 57:speed=75;break;
case 59:speed=74;break;
case 61:speed=73;break;
case 63:speed=72;break;
case 65:speed=71;break;
case 67:speed=70;break;
case 69:speed=69;break;
case 71:speed=68;break;
case 73:speed=67;break;
case 75:speed=66;break;
case 77:speed=65;break;
case 79:speed=64;break;
case 81:speed=63;break;
case 83:speed=62;break;
case 85:speed=61;break;
case 87:speed=60;break;
case 89:speed=59;break;
case 91:speed=58;break;
case 93:speed=57;break;
case 95:speed=56;break;
case 97:speed=55;break;
case 99:speed=54;break;
case 101:speed=53;break;
case 103:speed=52;break;
case 105:speed=51;break;
case 107:speed=50;break;
case 109:speed=49;break;
case 111:speed=48;break;
case 113:speed=47;break;
case 115:speed=46;break;
case 117:speed=45;break;
case 119:speed=44;break;
case 121:speed=43;break;
case 123:speed=42;break;
case 125:speed=41;break;
case 127:speed=40;break;
case 129:speed=39;break;
case 131:speed=38;break;
case 133:speed=37;break;
case 135:speed=36;break;
case 137:speed=35;break;
case 139:speed=34;break;
case 141:speed=33;break;
case 143:speed=32;break;
case 145:speed=31;break;
case 147:speed=30;break;
case 149:speed=29;break;
case 151:speed=28;break;
case 153:speed=27;break;
case 155:speed=26;break;
case 157:speed=25;break;
default:break;
}
}
}
void delay(i)//延時函數(shù)
{
for(j=0;j<i;j++)
for(k=0;k<30;k++);
display();
}
void delay2(m)//延時函數(shù)
{
for(j=0;j<m;j++);
for(k=0;k<255;k++);
}
void frun()// 反轉(zhuǎn)運行
{
for(z=0;z<8;z++)
{
P1=runf[z];
delay(y);
}
}
void zrun()// 正轉(zhuǎn)運行
{
for(z=0;z<8;z++)
{
P1=runz[z];
delay(y);
}
}
void anjian()
{ P1_7=0;
if(P2_2==0)
{
if(!P2_2);
delay2(255);
delay2(255);
delay2(255);
delay2(255);
y--;
if(y<=7)y=7;
P0=seg7code[3];
}
if(P2_3==0)
{
if(!P2_3);
delay2(255);
delay2(255);
delay2(255);
delay2(255);
P0=seg7code[4];
if((y<46)&&(y>7))y=+2;
if((y<157)&&(y>47))y++;
if(y>=157)y=157;
}
}
display()
{
bw=speed/100;
sw=speed%100/10;
gw=speed%10;
P2=P2&0x7f; //P2.7 輸出低電平，選通千位數(shù)
P3=seg7code[0]; //取出千位數(shù)，查表，輸出。
delay2(8); //延時
P2=P2|0xf0; //銷隱
P2=P2&0xbf; //P2.6 輸出低電平，選通百位數(shù)
P3=seg7code[bw]; //取出百位數(shù)，查表，輸出。
delay2(8); //延時
P2=P2|0xf0; //銷隱
P2=P2&0xdf; //P2.5 輸出低電平，選通十位數(shù)
P3=seg7code[sw]; //取出十位數(shù)，查表，輸出。
delay2(8); //延時
P2=P2|0xf0; //銷隱
P2=P2&0xef;
P3=seg7code[gw]; //取出個位數(shù)，查表，輸出。
delay2(8);
P2=P2|0xf0;
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