51單片機 lcd1602 萬年歷時鐘

ID:614592 · 發表于 2019-9-21 22:56

本帖最后由燎木乙于 2019-9-21 23:02 編輯

lcd1602.h

#ifndef _LCD1602_H_
#define _LCD1602_H_
sbit rs = P2^6;
sbit rw = P2^5;
sbit e = P2^7;
typedef unsigned int uint8;
typedef unsigned char uchar;
void delay(uint8 i);
void wrc(uint8 cmd);
void wrd(uint8 dat);
void init();
#endif

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lcd1602.c

#include "reg52.h"
#include "lcd1602.h"
#include "intrins.h"
void delay(uint8 i)
{
while(i--);
}
//指令寫入
void wrc(uint8 cmd)
{
delay(1000);
rs = 0;
rw = 0;
e = 0;
P0 = cmd;
e = 1;
delay(10);
e = 0;
}
//數據輸入
void wrd(uint8 dat)
{
delay(1000);
rs = 1;
rw = 0;
e = 0;
P0 = dat;
e = 1;
delay(10);
e = 0;
rs = 0;
}
//初始化
void init()
{
delay(1000);
wrc(0x38);
wrc(0x0c);
wrc(0x06);
wrc(0x01);
wrc(0x80);
}

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main.c

#include "reg52.h"
#include "lcd1602.h"
//時間：年月日時分秒
uchar Time[7] = {20, 19, 9, 9, 13, 0, 0};
uint8 n = 0;//定時計數，50ms一次
sbit key1=P3^0;
sbit key2=P3^1;
sbit key3=P3^2;
sbit key4=P3^3;
void display();
uint8 key();
void guize();
int main()
{
EA = 1;//開總中斷
EX0 = 1;//允許外部中斷0
IT0 = 1;//外部中斷0下降沿有效
TMOD = 0X01;//設置定時器模式
TH0 = (65535 - 46083) / 256;//延時50ms
TL0 = (65535 - 46083) % 256;
ET0 = 1;//開啟定時器0中斷
TR0 = 1;//開啟定時器
init();//初始化lcd1602
while(1)
{
display();//顯示函數
guize();
}
}
//顯示函數
void display()
{
wrc(0x80|0x00);
wrd('0' + Time[0]/10);
wrd('0' + Time[0]%10);
wrd('0' + Time[1]/10);
wrd('0' + Time[1]%10);
wrd('-');
wrd('0' + Time[2]/10);
wrd('0' + Time[2]%10);
wrd('-');
wrd('0' + Time[3]/10);
wrd('0' + Time[3]%10);
wrc(0x80|0x40);
wrd('0' + Time[4]/10);
wrd('0' + Time[4]%10);
wrd(':');
wrd('0' + Time[5]/10);
wrd('0' + Time[5]%10);
wrd(':');
wrd('0' + Time[6]/10);
wrd('0' + Time[6]%10);
}
uint8 key()
{
uint8 k = 0;
P3=0x0f;
delay(100000000);
while(k == 0)
{
if(key1 == 0)
{
delay(2000);
if(key1 == 0)
return 1;
}
else if(key2 == 0)
{
delay(2000);
if(key2 == 0)
return 2;
}
else if(key3 == 0)
{
delay(2000);
if(key3 == 0)
return 3;
}
else if(key4 == 0)
{
delay(2000);
if(key4 == 0)
return 4;
}
}
}
void guize()
{
if(Time[6] >= 60)//秒
{
Time[6] = 0;
Time[5] += 1;
}
if(Time[5] >= 60)//分
{
Time[5] = 0;
Time[4] += 1;
}
if(Time[4] >= 24)//時
{
Time[4] = 0;
Time[3] += 1;
}
if(Time[3] >= 29)//日
{
if((Time[2] == 1) || (Time[2] == 3) || (Time[2] == 5) || (Time[2] == 7) || (Time[2] == 8) || (Time[2] == 10) || (Time[2] == 12))//31天數月
{
if(Time[3] > 31)
{
Time[3] = 0;
Time[2] += 1;
}
}
else if((Time[2] == 4) || (Time[2] == 6) || (Time[2] == 9) || (Time[2] == 11))//30天數月
{
if(Time[3] > 30)
{
Time[3] = 0;
Time[2] += 1;
}
}
else //2月
{
if((Time[0] * 100 + Time[1])/4 == 0)//閏年
{
if(Time[3] > 29)
{
Time[3] = 0;
Time[2] += 1;
}
}
else //平年
{
Time[3] = 0;
Time[2] += 1;
}
}
}
if(Time[2] > 12)//月
{
Time[2] = 0;
Time[1] += 1;
}
if(Time[1] > 99)//年后兩位
{
Time[1] = 0;
Time[0] += 1;
}
if(Time[0] > 99)//年前兩位
{
Time[0] = 0;
}
}
void duang0()interrupt 0
{
uint8 k = 0, x = 0, y = 0, i;
delay(100000000);
wrc(0x0f);//開啟光標
wrc(0x02);//初始化光標位置
while(k != 3)
{
k = key();
switch(k)
{
case 1:
if(y == 0)
{
if(x == 3 || x == 5)
{
wrc(0x14);
wrc(0x14);
x++;
}
else if(x == 7)
{
for(i = 55; i > 0; i--)
{
wrc(0x14);
}
x = 0;
y = 1;
}
else
{
wrc(0x14);
x++;
}
}
else
{
if(x == 1 || x == 3)
{
wrc(0x14);
wrc(0x14);
x++;
}
else if(x == 5)
{
for(i = 57; i > 0; i--)
{
wrc(0x14);
}
x = 0;
y = 0;
}
else
{
wrc(0x14);
x++;
}
}
break;
case 2:
if(y == 0)
{
if(x == 4 || x== 6)
{
wrc(0x10);
wrc(0x10);
x--;
}
else if(x == 0)
{
for(i = 57; i > 0; i--)
wrc(0x10);
x = 5;
y = 1;
}
else
{
wrc(0x10);
x--;
}
}
else
{
if(x == 2 || x == 4)
{
wrc(0x10);
wrc(0x10);
x--;
}
else if(x == 0)
{
for(i = 55; i > 0; i--)
wrc(0x10);
x = 7;
y = 0;
}
else
{
wrc(0x10);
x--;
}
}
break;
case 4:
if(y == 0)
{
if(x == 0)
Time[0] += 10;
else if(x == 1)
Time[0] += 1;
else if(x == 2)
Time[1] += 10;
else if(x == 3)
Time[1] += 1;
else if(x == 4)
Time[2] += 10;
else if(x == 5)
Time[2] += 1;
else if(x == 6)
Time[3] += 10;
else if(x == 7)
Time[3] += 1;
}
else
{
if(x == 0)
Time[4] += 10;
else if(x == 1)
Time[4] += 1;
else if(x == 2)
Time[5] += 10;
else if(x == 3)
Time[5] += 1;
else if(x == 4)
Time[6] += 10;
else if(x == 5)
Time[6] += 1;
}
guize();
display();
if(y == 0)
{
switch(x)
{
case 0:
wrc(0x80|0x00);
break;
case 1:
wrc(0x80|0x01);
break;
case 2:
wrc(0x80|0x02);
break;
case 3:
wrc(0x80|0x03);
break;
case 4:
wrc(0x80|0x05);
break;
case 5:
wrc(0x80|0x06);
break;
case 6:
wrc(0x80|0x08);
break;
case 7:
wrc(0x80|0x09);
break;
default:break;
}
}
else
{
switch(x)
{
case 0:
wrc(0x80|0x40);break;
case 1:
wrc(0x80|0x41);break;
case 2:
wrc(0x80|0x43);break;
case 3:
wrc(0x80|0x44);break;
case 4:
wrc(0x80|0x46);break;
case 5:
wrc(0x80|0x47);break;
default:break;
}
}
break;
default: break;
}
}
wrc(0x0c);
}
void duang1()interrupt 1
{
n += 1;
if(n == 20)
{
Time[6] += 1;
n = 0;
}
TH0 = (65535 - 46083) / 256;//延時50ms
TL0 = (65535 - 46083) % 256;
}

復制代碼

ID:618543 · 發表于 2019-10-3 15:07

樓主能對代碼做一些說明么？謝謝

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51單片機 lcd1602 萬年歷時鐘