AVR的万年历proteus仿真及源码原理图 -

/********************************
FILE NAME: DS1302.c
CHIP TYPE: ATMEGA16
CLOCK FREQUENCY: 8MHZ
IDE: AVR Studio 4.15
COMPILER: GCC 4.3.2 avr-libc 1.6.6
TIME: 2009/5
AUTHOR: WINDWAY ELECTRONICS GUANGZHOU LIMITED
********************************/
#include <avr/io.h>
#include <avr/pgmspace.h>
#include <util/delay.h>
#define uchar unsigned char
#define uint unsigned int
/**********位操作定义******************/
#define sbit(x,PORT) (PORT) |= (1<<x)
#define cbit(x,PORT) (PORT) &= ~(1<<x)
#define pin(x,PIN) (PIN)&(1<<x)
/**********端口定义*******************/
/********LCD控制端口********/
#define S_RS sbit(0,PORTD)
#define C_RS cbit(0,PORTD)
#define S_RW sbit(1,PORTD)
#define C_RW cbit(1,PORTD)
#define S_E sbit(2,PORTD)
#define C_E cbit(2,PORTD)
#define out PORTC
#define check_busy_bit pin(7,PINC)
/********DS1302控制端口********/
#define S_RST sbit(0,PORTB)
#define C_RST cbit(0,PORTB)
#define S_SCLK sbit(1,PORTB)
#define C_SCLK cbit(1,PORTB)
#define S_IO sbit(2,PORTB)
#define C_IO cbit(2,PORTB)
#define IO pin(2,PINB)
#define IO_IN DDRB&=~(1<<2)
#define IO_OUT DDRB|=(1<<2)
/**********函数申明*******************/
/********LCD操作函数********/
void lcd_initial(void);
void write_data(uchar);
void write_command(uchar);
void check_busy(void);
void string(uchar ad,uchar *s);
void display(void);
/********DS1302操作函数********/
void write_byte(uchar);
uchar read_byte(void);
void wr1302(uchar,uchar);
uchar re1302(uchar);
void set1302(void);
void get1302(uchar curtime[]) ;
/**********数据初始化*******************/
uchar PROGMEM clock[7]={0x50,0x59,0x23,0x08,0x08,0x04,0x08};
uchar time[8];
/**********主函数*******************/
int main(void)
{
SPL=0X5F;//堆栈初始化
SPH=0X04;
DDRB=0XFF;//设PB口输出
DDRC=0XFF;//设PC口输出
DDRD=0XFF;//设PD口输出
out=0xff;
PORTB=0XFF;
PORTD=0XFF;
lcd_initial();
set1302( );
while(1)
{
get1302(time);
display();
}
}
/**********LCD控制函数*******************/
//LCD初始化
void lcd_initial(void)
{
_delay_ms(10);
write_command(0x38);//8位总线,双行显示，5X7的点阵字符
write_command(0x0C);//开整体显示,光标关，无黑块
write_command(0x06);//光标右移
write_command(0x01);//清屏
}
//查忙程序
void check_busy(void)
{
DDRC=0X00;
do{
C_E;
C_RS;
S_RW;
S_E;
_delay_us(1);
}while(check_busy_bit);
C_E;
DDRC=0XFF;
_delay_ms(1);
}
//向LCD写指令
void write_command(uchar command)
{
check_busy();
out=command;
C_RS;
C_RW;
S_E;
_delay_us(40);
C_E;
}
//向LCD写数据
void write_data(uchar dat)
{
check_busy();
out=dat;
S_RS;
C_RW;
S_E;
_delay_us(40);
C_E;
}
//显示字符串
void string(uchar ad,uchar *s)
{
write_command(ad);
while(*s>0)
{ write_data(*s++);
_delay_ms(100);
}
}
/**********DS1302控制函数*******************/
//八位数据写入函数
void write_byte(uchar dat)
{
uchar i;
IO_OUT;
for(i=8; i>0; i--)
{
if(dat&0x01)S_IO;else C_IO;
S_SCLK;
C_SCLK;
dat=dat>>1;
}
}
//八位数据读出函数
uchar read_byte(void)
{
uchar i,temp=0;
IO_IN;
for(i=8; i>0; i--)
{
temp=temp>>1;
if(IO)temp|=0X80;
S_SCLK;
C_SCLK;
}
return(temp);
}
//写寄存器函数
void wr1302(uchar add,uchar date)
{
C_RST;
C_SCLK;
S_RST;
write_byte(add);
write_byte(date);
S_SCLK;
C_RST;
}
//读寄存器函数
uchar re1302(uchar add)
{
uchar dat;
C_RST;
C_SCLK;
S_RST;
write_byte(add);
dat=read_byte();
S_SCLK;
C_RST;
return(dat);
}
//设置时间初值函数
void set1302(void)
{
uchar i,add=0x80;
wr1302(0x8e,0x00);
for(i=0;i<8;i++)
{
wr1302(add,pgm_read_byte(&clock[i]));
_delay_us(2);
add+=2;
}
wr1302(0x8e,0x00);
}
//读当前时间值函数
void get1302(uchar curtime[])
{
uchar i,add=0x81;
for (i=0;i<7;i++)
{
curtime[i]=re1302(add);
add+=2;
}
}
//写显示屏
void display(void)
{
write_command(0x84);//写年
write_data(time[6]/16+0x30);
write_data(time[6]%16+0x30);
write_data(0x2D); //写“-”
write_command(0x87);//写月
write_data(time[4]/16+0x30);
write_data(time[4]%16+0x30);
write_data(0x2D); //写“-”
write_command(0x8a);//写日
write_data(time[3]/16+0x30);
write_data(time[3]%16+0x30);
write_command(0xc1);//写星期
write_data(time[5]%16+0x30);
write_command(0xc4);//写时
write_data(time[2]/16+0x30);
write_data(time[2]%16+0x30);
write_data(0x2D); //写“-”
write_command(0xc7);//写分
write_data(time[1]/16+0x30);
write_data(time[1]%16+0x30);
write_data(0x2D); //写“-”
write_command(0xca);//写秒
write_data(time[0]/16+0x30);
write_data(time[0]%16+0x30);
}

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