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标题: 想把51上的矩阵键盘程序该用飞思卡尔的做一遍，发现不行了，至今还不知道哪里有问题 [打印本页]

作者: 抓住指間の落寞. 时间: 2013-2-27 14:55
标题: 想把51上的矩阵键盘程序该用飞思卡尔的做一遍，发现不行了，至今还不知道哪里有问题
#include <hidef.h>    /* common defines and macros */
#include "derivative.h"    /* derivative-specific definitions */

#define uchar unsigned char
#define uint  unsigned int
#define dula PORTK_PK0
#define wela PORTK_PK1
#define dula_dir DDRK_DDRK1
#define wela_dir DDRK_DDRK0
#define DATA  PORTA
#define DATA_dir DDRA
#define  KEY    PORTB
#define KEY_dir  DDRB

byte shuma[20]={
0x03,0x9f,0x25,0x0d,
0x99,0x49,0x41,0x1f,
0x01,0x09
};

/*************************************************************/
/*                      延时函数                         */
/*************************************************************/
void delay(uint xms)
{
uint i,j;
for(j=xms;j>0;j--)
for(i=110;i>0;i--);
}

/*************************************************************/
void display(uchar num) {

  DATA=shuma[num];
  dula=1;
  dula=0;


}
/*************************************************************/

void keyscan() {

uchar temp,n;

KEY  =  0Xfe;
temp =  KEY;
temp =temp&0xf0;
if(temp!=0xf0)
{
  delay(10) ;
  temp = KEY;
  switch(temp)
  {  case 0xee :n=0;break;
   case 0xde :n=1;break;
   case 0xbe :n=2;break;
   case 0x7e :n=3;break;
  }
  while(temp!=0xf0)
{
temp = KEY;
temp =temp&0xf0;
}

display(n);
}

KEY  =  0Xfd;
temp =  KEY;
temp =temp&0xf0;
if(temp!=0xf0)
{
  delay(10) ;
  temp = KEY;
  switch(temp)
  {  case 0xed :n=4;break;
   case 0xdd :n=5;break;
   case 0xbd :n=6;break;
   case 0x7d :n=7;break;
  }
  while(temp!=0xf0)
{
temp = KEY;
temp =temp&0xf0;
}

display(n);
}

KEY  =  0Xfb;
temp =  KEY;
temp =temp&0xf0;
if(temp!=0xf0)
{
  delay(10) ;
  temp = KEY;
  switch(temp)
  {  case 0xeb :n=8;break;
   case 0xdb :n=9;break;
   case 0xbb :n=10;break;
   case 0x7b :n=11;break;
  }
  while(temp!=0xf0)
{
temp = KEY;
temp =temp&0xf0;
}

display(n);
}

KEY  =  0Xf7;
temp =  KEY;
temp =temp&0xf0;
if(temp!=0xf0)
{
  delay(10) ;
  temp = KEY;
  switch(temp)
  {  case 0xe7 :n=12;break;
   case 0xd7 :n=13;break;
   case 0xb7 :n=14;break;
   case 0x77 :n=15;break;
  }
  while(temp!=0xf0)
{
temp = KEY;
temp =temp&0xf0;
}

display(n);
  }


}

/*************************************************************/
void init()
{
dula_dir  =  1;
wela_dir  =  1;
DATA_dir  =  0xff;
KEY_dir =  0xff;

}

/*************************************************************/
void main(void) {

init();
dula = 1;
DATA = 0xff;
dula = 0;
wela = 1;
DATA = 0xff;
wela = 0;

  for(;;)
{
keyscan();

  }

}

作者: 抓住指間の落寞. 时间: 2013-2-27 16:46
还是出不来好纠结啊希望有高手指教指教

:'(

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