#include

#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}; //正转动数组

code unsigned char runf[8]={ 0x07,0x06,0x0e,0x0c,0x0d,0x09,0x0b,0x03}; //反转动数组

code unsigned char seg7code[10]={ 0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90}; //显示段码 数码管字跟：

unsigned char a,b,s,i,j,k,z,gw,sw,bw,speed,m;

int y=31;//定义转动速度，数值越大电机转速越慢反之则快

sbit P2_0=P2^0;//正转按键

sbit P2_1=P2^1;//反转按键

sbit P2_2=P2^2;//加速按键

sbit P2_3=P2^3;//减速按键

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)//延时函数

{

for(j=0;j

for(k=0;k<30;k++);

display();

}

void delay2(m)//延时函数

{

for(j=0;j

for(k=0;k<255;k++);

}

void frun()// 反转运行

{

for(z=0;z<8;z++)

{

P1=runf[z];

delay(y);

}

}

void zrun()// 正转运行

{

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 输出低电平，选通千位数

P3=seg7code[0]; //取出千位数，查表，输出。

delay2(8); //延时

P2=P2|0xf0; //销隐

P2=P2&0xbf; //P2.6 输出低电平，选通百位数

P3=seg7code[bw]; //取出百位数，查表，输出。

delay2(8); //延时

P2=P2|0xf0; //销隐

P2=P2&0xdf; //P2.5 输出低电平，选通十位数

P3=seg7code[sw]; //取出十位数，查表，输出。

delay2(8); //延时

P2=P2|0xf0; //销隐

P2=P2&0xef;

P3=seg7code[gw]; //取出个位数，查表，输出。

delay2(8);

P2=P2|0xf0;

}