#include <reg51.h>
#include<intrins.h>
#define uchar unsigned char
#define uint unsigned int
uchar duan[10]={0xc0,0Xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90}; //所需的段的位碼
//uchar wei[4]={0XEf,0XDf,0XBf,0X7f}; //位的控制端 (開發板)
uchar wei[4]={0X80,0X40,0X20,0X10}; //位的控制端 (仿真)
uint z,x,c,v, date; //定義數據類型
uint dispcount=0;
uint lck=0;
uint disp=0;
/* 數據端接口定義 */
sbit key0=P1^0;
sbit key1=P1^1;
sbit key2=P1^2;
sbit key3=P1^3;
sbit sck = P2^0; //輸入時鐘
sbit row_dat = P2^1; //行數據時鐘
sbit row_buf_sck = P2^2; //行鎖存
//sbit row_mr = P2^4; //移位寄存器清零端
//sbit row_oe = P2^5; //輸出使能
/* 選通端接口定義 */
sbit col_dat = P2^6; //列數據時鐘
sbit col_buf_sck = P2^3; //列鎖存
unsigned char keyval;
unsigned int code sel[16] = {0xff7f,0x7fff,0xffbf,0xbfff,0xffdf,0xdfff,0xffef,0xefff,
0xfff7,0xf7ff,0xfffb,0xfbff,0xfffd,0xfdff,0xfffe,0xfeff};
unsigned char code hanzi[4][32] =
{
{0x1C,0x00,0x20,0x00,0x40,0x00,0x40,0x00,0x20,0x00,0x1C,0x00,0x02,0x00,0x01,0x00,
0x01,0x00,0x02,0x00,0x1C,0x00,0x20,0x00,0x40,0x00,0x40,0x00,0x20,0x00,0x1C,0x00},/*"正弦",0*/
{0x00,0xFF,0x00,0x80,0x00,0x80,0x00,0x80,0x00,0x80,0x00,0xFF,0x00,0x01,0x00,0x01,
0x00,0x01,0x00,0x01,0x00,0xFF,0x00,0x80,0x00,0x80,0x00,0x80,0x00,0x80,0x00,0xFF},/*"方波",1*/
{0x00,0x40,0x00,0x80,0x01,0x00,0x02,0x00,0x01,0x00,0x00,0x80,0x00,0x40,0x00,0x20,
0x00,0x40,0x00,0x80,0x01,0x00,0x02,0x00,0x01,0x00,0x00,0x80,0x00,0x40,0x00,0x20},/*"三角波",2*/
{0x1C,0xFF,0x20,0x80,0x40,0x80,0x40,0x80,0x20,0x80,0x1C,0xFF,0x02,0x01,0x01,0x01,
0x01,0x01,0x02,0x01,0x1C,0xFF,0x20,0x80,0x40,0x80,0x40,0x80,0x20,0x80,0x1C,0xFF},/*"正弦和方波",3*/
};
void display(unsigned char *p);
void send_data_row(unsigned int dat); /* 發送行數據端數據函數 */
void send_data_col(unsigned int dat); /* 發送列選通端數據函數 */
void delay(unsigned int m);
void T(void);
void delay10ms();
void delayfre(uchar t)
{
uchar i,j;
for(i=0;i<t;i++)
{
for(j=13;j>0;j--);
{ ;
}
}
}
void xianshi()
{
/*****************數據轉換*****************************/
z=date/1000; //求千位
x=date%1000/100; //求百位
c=date%100/10; //求十位
v=date%10; //求個位
P2=wei[0];
P0=duan[z];
delayfre(30);
P2=wei[1];
P0=duan[x];
delayfre(30);
P2=wei[2];
P0=duan[c];
delayfre(30);
P2=wei[3];
P0=duan[v];
delayfre(30);
}
/*************************************************************************
定時器初值1ms
**************************************************************************/
void initTimer(void)
{
TMOD=0x0;
TH0=0xe3;
TL0=0xc;
}
/*************************************************************************
定時器函數
**************************************************************************/
void timer0(void) interrupt 1
{
TH0=0xe3;
TL0=0xc;
lck++;
if(lck==1000)
{
disp=dispcount;
lck=0;
dispcount=0;
}
}
/*************************************************************************
中斷函數
**************************************************************************/
void int0(void) interrupt 0
{
dispcount++; //每一次中斷，計數加一
}
void T(void)
{
P1=0xff;
if((P1&0x0f)!=0x0f)
{
delay10ms();
if(key0==0)
keyval=0;
if(key1==0)
keyval=1;
if(key2==0)
keyval=2;
if(key3==0)
keyval=3;
}
}
void delay10ms(void)
{
unsigned char i,j;
for(i=0;i<100;i++)
for(j=0;j<100;j++)
;
}
void send_data_row(unsigned int dat)
{
unsigned char i;
for(i=0;i<16;i++)
{
sck = 0;
row_dat = dat&0x8000; //temp<<=1;
dat = dat<<1; //ds = CY;
sck = 1;
}
row_buf_sck = 0;
_nop_();
_nop_();
row_buf_sck = 1;
}
void send_data_col(unsigned int dat)
{
unsigned char i;
for(i=0;i<16;i++)
{
sck = 0;
col_dat = dat&0x8000;
dat = dat<<1;
sck = 1;
}
col_buf_sck = 0;
_nop_();
_nop_();
col_buf_sck = 1;
}
void delay(unsigned int m)
{
unsigned char i;
for(;m>0;m--)
{
for(i=0;i<124;i++)
{;}
}
}
void display(unsigned char *p)
{
unsigned char i;
// unsigned int temp;
for(i=0;i<32;i++)
{
if(i<16)
{
send_data_row(0x0000);
// temp = sel[i]|0xff00;
send_data_col(sel[i]);
send_data_row(*p);
p++;
delay(2);
}
else
{
send_data_row(0x0000);
// temp = (sel[i]<<8)|0x00ff;
send_data_col(sel[i-16]);
send_data_row((*p)<<8);
p++;
delay(2);
}
}
}
void main()
{
IT0=1; //INT0下降沿中斷
EX0=1; //允許INT1中斷
initTimer(); //裝入初值
TR0=1;
ET0=1;
EA=1;
keyval=0;
while(1)
{
date=disp;
xianshi();
T();
switch(keyval)
{
case 0:display(hanzi[0]);
break;
case 1:display(hanzi[1]);
break;
case 2:display(hanzi[2]);
break;
case 3:display(hanzi[3]);
break;
}
}
} |
