Key control motor Display speed

Program Flowchart

Code

#include <reg52.h>
#define UCHAR unsigned char
Sbit dula=p2^6;
Sbit wela=p2^7;
Sbit jia_key=p3^6;
Sbit jian_key=p3^7;
Sbit zf_key=p3^5;
Bit flag=0;
Uchar num = 0,show_num=2,maichong=4,table_begin=0;
Uchar Code TABLE1[]={0X01,0X02,0X04,0X08,0X08,0X04,0X02,0X01};
Uchar Code table[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f,0x77,0x7c,0x39,0x5e,0x79,0x71};
void delay (Uchar i)
{
Uchar J,k;
for (j=i;j>0;j--)
for (k=125;k>0;k--);
}
void display ()
{
dula=0;
P0=table[show_num];
Dula=1;
dula=0;
wela=0;
P0=0xfe;
Wela=1;
wela=0;
Delay (5);
P0=TABLE[0];
Dula=1;
dula=0;
P0=0XFD;
Wela=1;
wela=0;
Delay (5);
}
void Key ()
{
if (jia_key==0)
{
Delay (5);
if (jia_key==0)
{
num++;
if (num==4)
num=3;
while (jia_key==0);
}
}
if (jian_key==0)
{
Delay (5);
if (jian_key==0)
{
if (num!=0)
num--;
Else
num=0;
while (jian_key==0);
}
}
if (zf_key==0)
{
Delay (5);
if (zf_key==0)
{
Flag=~flag;
while (zf_key==0);
}
}
}


void Dispose ()
{
Switch (NUM)
{
Case 0:
show_num=2;
maichong=5;
Break
Case 1:
show_num=4;
maichong=4;
Break
Case 2:
show_num=6;
maichong=6;
Break
Case 3:
show_num=8;
maichong=2;
Break
}
if (flag==0)
{
table_begin=0;
}
Else
table_begin=4;
}


void Qudong ()
{
Uchar I,j;
for (j=0+table_begin;j<4+table_begin;j++)
{
P1=TABLE1[J];
for (i=0;i<maichong;i++)
{
Display ();
}
}
}


void Main ()
{
while (1)
{
Key ();
Dispose ();
Qudong ();
}
}

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