51單片機矩陣鍵盤16個鍵值控制數碼管的輸出0000到1111

ID:384353 · 發表于 2018-11-2 17:09

如何用矩陣鍵盤的16個鍵值對應四段數碼管顯示0000到1111？我寫的一個子函數 dectobin(int n)是先十進制轉化成二進制，再放到數組里，數組里對應鍵值得2進制數，然后再數碼管上顯示出來，我仿真不出來求解

#include <reg51.h>
#define GPIO_DIG P0
#define GPIO_KEY P1
#define GPIO_PLACE P2

unsigned char code DIG_CODE[2]={0xc0,0xf9};//0xc0 0cf9
unsigned char code DIG_PLACE[4]={0xfe,0xfd,0xfb,0xf7};//fe fd fb f7
unsigned char KeyState;//×′ì¬
unsigned char DigplayDate[4];//????????4????
unsigned char SHUZU[4];
unsigned char KeyValue;//????????????

void Delay10ms(unsigned int c);
void KeyDown();
void dectobin(int n);//?????????
void DigDisplay();//??????

void main(void)
{
KeyState=0;
while(1)
{
KeyDown();

if(KeyState==1)
{
   dectobin(KeyValue);
/*DigplayDate[3]=SHUZU[0];
DigplayDate[2]=SHUZU[1];
DigplayDate[1]=SHUZU[2];
DigplayDate[0]=SHUZU[3];

*///KeyState=0;
}
DigDisplay();
}
KeyState=0;
}

void DigDisplay()//???????
{
unsigned char i;
unsigned int j;
unsigned char DigplayDate[4];
for(i=0;i<4;i++)
{
if(SHUZU[i]==0)
   DigplayDate[i] = DIG_CODE[0];
else
       DigplayDate[i] = DIG_CODE[1];
GPIO_PLACE=DIG_PLACE[i]; //????
GPIO_DIG=DigplayDate[i];//????
Delay10ms(1);
j=10;
while(j--);
GPIO_DIG=0xff;//??
  }

}

void KeyDown(void)
{
unsigned int a=0;

GPIO_KEY=0x0f;
if(GPIO_KEY!=0x0f)
    {
Delay10ms(1);
a++;
a=0;
if(GPIO_KEY!=0x0f)
{
KeyState=1;//óD°′¼ü°′ÏÂ
//2aêÔáD
GPIO_KEY=0X0F;
// Delay10ms(1);
switch(GPIO_KEY)
{
case(0X07): KeyValue=0;break;
case(0X0b): KeyValue=4;break;
case(0X0d): KeyValue=8;break;
case(0X0e): KeyValue=12;break;
// default: KeyValue=17; //¼ì2a3ö′í»Ø¸′17òaË¼êÇ°ÑêyÂë1üè«Ãeμô¡￡
}
//2aêÔDD
GPIO_KEY=0XF0;
// Delay10ms(1);
switch(GPIO_KEY)
{
case(0X70): KeyValue=KeyValue+3;break;
case(0Xb0): KeyValue=KeyValue+2;break;
case(0Xd0): KeyValue=KeyValue+1;break;
case(0Xe0): KeyValue=KeyValue;break;
// default: KeyValue=17;
}
while((a<50)&&(GPIO_KEY!=0xf0))    //°′¼üËéêÖ¼ì2a
{
Delay10ms(1);
a++;
}
a=0;
}
}
}

void dectobin(int n)
{
int i,temp,j=0;
temp=n;
for(i=0;i<4;i++)
{
if(temp==0)
SHUZU[i]=0;
else
{
j=temp%2;
SHUZU[i]=j;
   temp=temp/2;
}

}


}

void Delay10ms(unsigned int c) //?? 0us
{
unsigned char a, b;

//--c???????????????,???for???????????--//
for (;c>0;c--)
{
for (b=38;b>0;b--)
{
for (a=130;a>0;a--);
}
}
}