|
大家好,我想实现顺序输入,但是数组里边移动老是出问题,找不到原因。
#include "reg52.h"
#include "intrins.h"
typedef unsigned char u8;
typedef unsigned int u16;
#define GPIO_DIG P0
#define GPIO_KEY P1
sbit A2=P2^2;
sbit A3=P2^3;
sbit A4=P2^4;
extern u8 Srt[16]={0x3f,0x06,0x5b,0x4f,
0x66,0x6d,0x7d,0x07,
0x7f,0x6f,0x77,0x7c,
0x39,0x5e,0x79,0x71} ;
u8 Srt1[16]={0x3f,0x06,0x5b,0x4f,
0x66,0x6d,0x7d,0x07,
0x7f,0x6f,0x77,0x7c,
0x39,0x5e,0x79,0x71} ;
u8 keyvalue;
u8 keyvalue1;
u8 keyvalue2;
u8 i=0;
u8 j=0;
void tye(u16 i)
{
while(i--);
}
void Dtys()
{
int i;
i=0;
for (i;i<8;i++)
{
P0=0x00;
switch(i)
{
case 0:
A2=0;A3=0;A4=0;break;
case 1:
A2=1;A3=0;A4=0;break;
case 2:
A2=0;A3=1;A4=0;break;
case 3:
A2=1;A3=1;A4=0;break;
case 4:
A2=0;A3=0;A4=1;break;
case 5:
A2=1;A3=0;A4=1;break;
case 6:
A2=0;A3=1;A4=1;break;
case 7:
A2=1;A3=1;A4=1;break;
}
P0=Srt[i];
tye(100);
P0=0x00;
}
}
void keydown()
{
char a=0;
GPIO_KEY=0x0f;
if (GPIO_KEY!=0x0f)
{
tye(1000);
if (GPIO_KEY!=0x0f)
{
switch(GPIO_KEY)
{
case(0x07):keyvalue=0;break;
case(0x0b):keyvalue=1;break;
case(0x0d):keyvalue=2;break;
case(0x0e):keyvalue=3;break;
}
GPIO_KEY=0xf0;
switch(GPIO_KEY)
{
case(0x70):keyvalue=keyvalue;break;
case(0xb0):keyvalue=keyvalue+4;break;
case(0xd0):keyvalue=keyvalue+8;break;
case(0xe0):keyvalue=keyvalue+12;break;
}
while ((a<50)&&(GPIO_KEY!=0xf0))
{
tye(1000);
a++;
}
}
}
}
void rtr()
{ Srt[4]=Srt[3];
Srt[3]=0x00;
Srt[3]=Srt[2];
Srt[2]=Srt[1];
Srt[1]=Srt[0];
Srt[0]=keyvalue1;
}
void main()
{
while (1)
{
keydown();
keyvalue1=Srt1[keyvalue];
rtr();
Dtys();
}
} |
|