AVR128的程序——12864时钟

#include

#define uint unsigned int

#define uchar unsigned char

#define psbset DDRB |= (1<4)

#define psbset PORTB |= (1<4)

#define psbclr PORTB &=~(1<4)

#define rsout DDRB |= (1<5)

#define rsset PORTB |=(1<5)

#define rsclr PORTB &=~(1<5)

#define rwout DDRB |= (1<6)

#define rwset PORTB |= (1<6)

#define rwclr PORTB &= ~(1<6)

#define enout DDRB |= (1<7)

#define enset PORTB |= (1<7)

#define enclr PORTB &= ~(1<7)

unsigned char table1[]=" 2012年02月04日";

unsigned char table2[]="星期六 温度 8℃";

unsigned char table3[]=" 00: 00: 00";

unsigned char table4[]=" 科嵌电子创作";

uint num=50,fen=9,shi=8,ri=04,yue=02;;

void mcu_init(void);

void timer1_init(void)

{

TCNT1H = 0xE1;

TCNT1L = 0x7C;

TCCR1A = 0x00;

TCCR1B = 0x05;

TIMSK = 0x04;

}

void Delayus(uint US)

{

uint i;

US=US*5/4;

for( i=0;i

}

void Delayms(uint MS)

{

uint i,j;

for( i=0;i

for(j=0;j<1141;j++);

}

void write_12864com(uchar com)

{

rwclr;

rsclr;

Delayus(500);

PORTA=com;

enset;

Delayus(1000);

enclr;

Delayus(1000);

}

void write_12864dat(uchar dat)

{

rwclr;

rsset;

Delayus(500);

PORTA=dat;

enset;

Delayus(1000);

enclr;

Delayus(1000);

}

void init12864lcd(void)

{

Delayms(500);

write_12864com(0x30);

Delayus(500);

write_12864com(0x30);

Delayus(500);

write_12864com(0x0f);

Delayus(500);

write_12864com(0x01);

Delayms(25);

write_12864com(0x06);

Delayus(2500);

write_12864com(0x0c);

Delayus(500);

}

void display(void)

{

uchar i;

write_12864com(0x80);

for(i=0;i<16;i++)

{

write_12864dat(table1[i]);

Delayms(10);

}

}

void display1(void)

{

uchar i;

write_12864com(0x90);

for(i=0;i<16;i++)

{

write_12864dat(table2[i]);

Delayms(10);

}

}

void display2(void)

{

uchar i;

write_12864com(0x88);

for(i=0;i<12;i++)

{

write_12864dat(table3[i]);

Delayms(10);

}

}

void display3(void)

{

uchar i;

write_12864com(0x98);

for(i=0;i<14;i++)

{

write_12864dat(table4[i]);

Delayms(10);

}

}

void write_sfm(uchar add,uchar date)

{

uchar shi,ge;

shi=date/10;

ge=date;

write_12864com(add);

write_12864dat(0x30+shi);

write_12864dat(0x30+ge);

}

void main(void)

{

mcu_init();

init12864lcd();

timer1_init();

SEI();

display();

display1();

display2();

display3();

while(1)

{

write_sfm(0x8D,num);

write_sfm(0x8B,fen);

write_sfm(0x89,shi);

write_sfm(0x86,ri);

write_sfm(0x84,yue);

}

}

void mcu_init(void)

{

DDRA = 0XFF;

PORTA = 0XFF;

DDRC = 0XFF;

PORTC = 0XFF;

DDRF |= 0X0E;

PORTF |= 0X0E;

PORTF &= 0xF0;

DDRB |= 0X10;

PORTB |= 0X10;

psbset;

rsout;

rwout;

enout;

}

#pragma interrupt_handler timer1_ovf_isr:15

void timer1_ovf_isr(void)

{

TCNT1H = 0xE1;

TCNT1L = 0x7C;

num++;

if(num==60)

{

num=0;

fen++;

if(fen==60)

{

fen=0;

shi++;

if(shi==24)

{

shi=0;

ri++;

if(ri==32)

{

ri=1;

yue++;

}

}

}

}

}