x102_12887.c

DS12887时钟在单片机上的应用,C语言代码和说明文档

#include <reg52.h>
#include <ctype.h>
#include <string.h>
#include <stdlib.h>
#include <stdio.h>
#include <math.h>
#include <absacc.h>

#define uchar unsigned char
#define uint unsigned int
#define ulong unsigned long

sbit sm1623_dout=P1^0;
sbit sm1623_din=P1^1;
sbit sm1623_clk=P1^2;
sbit sm1623_stb=P1^3;
sbit sound=P1^5;

#define clock_second XBYTE[0xd000]//秒
#define clock_second_a XBYTE[0xd001]//秒闹
#define clock_minute XBYTE[0xd002]//分
#define clock_minute_a XBYTE[0xd003]//分闹
#define clock_hour XBYTE[0xd004]//时
#define clock_hour_a XBYTE[0xd005]//时闹
#define clock_week XBYTE[0xd006]//星期
#define clock_day XBYTE[0xd007]//日
#define clock_month XBYTE[0xd008]//月
#define clock_year XBYTE[0xd009]//年
#define clock_a XBYTE[0xd00a]//寄存器A
#define clock_b XBYTE[0xd00b]//寄存器B
#define clock_c XBYTE[0xd00c]//寄存器C

uchar xdata *cs_12887=0xd00e;//12887RAM地址

void delay(uchar delay_temp);//长延时
void delaym(uchar delaym_temp);//短延时
void disp(uchar dis);
void display();

uchar i,j,k;
uchar code_dis[6];

main(void)
{
start:	//---------------------------------------12887RAM测试
	code_dis[0]=1;
	code_dis[1]=2;
	code_dis[2]=8;
	code_dis[3]=8;
	code_dis[4]=7;
	
	code_dis[5]=1;
	display();//显示128871
	delay(0x7f);
	for(i=0;i<114;i++)
	{
		*(cs_12887+i)=0x55;
	}
	
	code_dis[5]=2;
	display();//显示128872
	delay(0x7f);
	for(i=0;i<114;i++)
	{
		if(*(cs_12887+i)!=0x55)sound=0;
	}
	delay(0xff);
	delay(0xff);
	sound=1;
	
	//---------------------------------------12887测试	
	
	if((clock_b&0x80)==0x80)//时钟没有运行时初始化时钟
	{
		clock_a=0x70;//分频器复位
		clock_b=0x82;//bcd,24小时制
		clock_second=0x00;
		clock_minute=0x00;
		clock_hour=0x18;//18
		clock_second_a=0x00;
		clock_minute_a=0x00;
		clock_hour_a=0x00;
		clock_week=0x03;
		clock_day=0x021;
		clock_month=0x09;
		clock_year=0x05;
		clock_a=0x20;//选时基32.768k
		clock_b=0x22;//开始运行
	}
	while(1)
	{
		i=clock_second;
		j=clock_minute;
		k=clock_hour;
		code_dis[0]=(k&0xf0)>>4;
		code_dis[1]=k&0x0f;
		code_dis[2]=(j&0xf0)>>4;
		code_dis[3]=j&0x0f;
		code_dis[4]=(i&0xf0)>>4;
		code_dis[5]=i&0x0f;
		display();
		delay(0x3f);
	}
	goto start;	
}

void delay(uchar delay_temp)//延时子程序
{
	uchar i,j;
	for(i=0;i<delay_temp;i++)
	{
		for(j=0;j<255;j++);
	}
}

void delaym(uchar delaym_temp)//延时子程序
{
	uchar data i;
	for(i=0;i<delaym_temp;i++);
}

void disp(uchar dis)//送显示命令子程序
{
	uchar dis_i,dis_temp;
	dis_temp=0x01;
	for(dis_i=0;dis_i<8;dis_i++)
	{
		sm1623_clk=0;
		delaym(1);
		if((dis&dis_temp)==0){sm1623_din=0;}
		else{sm1623_din=1;}
		sm1623_clk=1;//上升沿输入数据
		delaym(1);
		dis_temp=dis_temp<<1;
	}
}

void display()//显示子程序
{
	uchar code_dis_d[6];
	uchar i;
	for(i=0;i<6;i++)//计算显示码
	{
		switch(code_dis[i])
		{
			case 1:
				code_dis_d[i]=0x06;
				break;
			case 2:
				code_dis_d[i]=0x5b;
				break;
			case 3:
				code_dis_d[i]=0x4f;
				break;
			case 4:
				code_dis_d[i]=0x66;
				break;
			case 5:
				code_dis_d[i]=0x6d;
				break;
			case 6:
				code_dis_d[i]=0x7d;
				break;
			case 7:
				code_dis_d[i]=0x07;
				break;
			case 8:
				code_dis_d[i]=0x7f;
				break;
			case 9:
				code_dis_d[i]=0x6f;
				break;
			case 10://显示黑
				code_dis_d[i]=0x00;
				break;
			case 11://显示A
				code_dis_d[i]=0x77;
				break;
			case 12://显示d
				code_dis_d[i]=0x5e;
				break;
			case 13://显示-
				code_dis_d[i]=0x40;
				break;
			case 14://显示8.
				code_dis_d[i]=0xff;
				break;
			default://显示0
				code_dis_d[i]=0x3f;
				break;
		}
	}
	sm1623_stb=0;
	disp(0x02);//显示模式6位12段
	sm1623_stb=1;
	delaym(1);
	sm1623_stb=0;
	disp(0x40);//设置数据
	sm1623_stb=1;
	delaym(1);
	sm1623_stb=0;
	disp(0xc0);//设置地址
	disp(code_dis_d[0]);//1
	disp(0x00);
	disp(code_dis_d[1]);//2
	disp(0x00);
	disp(code_dis_d[2]);//3
	disp(0x00);
	disp(code_dis_d[3]);//4
	disp(0x00);
	disp(code_dis_d[4]);//5
	disp(0x00);
	disp(code_dis_d[5]);//6
	disp(0x00);
	sm1623_stb=1;
	delaym(1);
	sm1623_stb=0;
	disp(0x8a);//控制显示
	sm1623_stb=1;
}