run_year._c

mega128做的ds12887的时钟

#ifndef _CPU
#define _CPU
#include <cpu.h>
#endif

#ifndef _KU
#define _KU
#include <ku.h>
#endif

unsigned char c_moon,year_moon,month_moon,day_moon;

unsigned char get_moon_day(uchar month_p,uint table_addr)
{
uchar temp;
    switch (month_p){
        case 1:{temp=year_code[table_addr]&0x08;
             if (temp==0)return(0);else return(1);}
        case 2:{temp=year_code[table_addr]&0x04;
             if (temp==0)return(0);else return(1);}
        case 3:{temp=year_code[table_addr]&0x02;
             if (temp==0)return(0);else return(1);}
        case 4:{temp=year_code[table_addr]&0x01;
             if (temp==0)return(0);else return(1);}
        case 5:{temp=year_code[table_addr+1]&0x80;
             if (temp==0) return(0);else return(1);}
        case 6:{temp=year_code[table_addr+1]&0x40;
             if (temp==0)return(0);else return(1);}
        case 7:{temp=year_code[table_addr+1]&0x20;
             if (temp==0)return(0);else return(1);}
        case 8:{temp=year_code[table_addr+1]&0x10;
             if (temp==0)return(0);else return(1);}
        case 9:{temp=year_code[table_addr+1]&0x08;
             if (temp==0)return(0);else return(1);}
        case 10:{temp=year_code[table_addr+1]&0x04;
             if (temp==0)return(0);else return(1);}
        case 11:{temp=year_code[table_addr+1]&0x02;
             if (temp==0)return(0);else return(1);}
        case 12:{temp=year_code[table_addr+1]&0x01;
             if (temp==0)return(0);else return(1);}
        case 13:{temp=year_code[table_addr+2]&0x80;
             if (temp==0)return(0);else return(1);}
    }
}


void Conversion(uchar c,uchar year1,uchar month1,uchar day1)
{                         //c=0 为21世纪,c=1 为19世纪 输入输出数据均为BCD数据
    uchar temp1,temp2,temp3,month_p;
    uint temp4,table_addr;
    uchar flag2,flag_y;
    /*temp1=year1/16;   //BCD->hex 先把数据转换为十六进制
    temp2=year1%16;
    year1=temp1*10+temp2;
    temp1=month/16;
    temp2=month%16;
    month=temp1*10+temp2;
    temp1=day/16;
    temp2=day%16;
    day=temp1*10+temp2;*/
    //定位数据表地址
    if(c==0){                   
        table_addr=(year1+0x64-1)*0x3;
    }
    else {
        table_addr=(year1-1)*0x3;
    }
    //定位数据表地址完成
    //取当年春节所在的公历月份
    temp1=year_code[table_addr+2]&0x60; 
    temp1=_cror_(temp1,5);
    //取当年春节所在的公历月份完成
    //取当年春节所在的公历日
    temp2=year_code[table_addr+2]&0x1f; 
    //取当年春节所在的公历日完成
    // 计算当年春年离当年元旦的天数,春节只会在公历1月或2月
    if(temp1==0x1){  
        temp3=temp2-1;  
    }  
    else{
        temp3=temp2+0x1f-1;        
    }
    // 计算当年春年离当年元旦的天数完成
    //计算公历日离当年元旦的天数,为了减少运算,用了两个表
    //day_code1[9],day_code2[3]
    //如果公历月在九月或前,天数会少于0xff,用表day_code1[9],
    //在九月后,天数大于0xff,用表day_code2[3]
    //如输入公历日为8月10日,则公历日离元旦天数为day_code1[8-1]+10-1
    //如输入公历日为11月10日,则公历日离元旦天数为day_code2[11-10]+10-1
    if (month1<10){ 
        temp4=day_code1[month1-1]+day1-1;
    }
    else{
        temp4=day_code2[month1-10]+day1-1;
    }
    if ((month1>0x2)&&(year1%0x4==0)){  //如果公历月大于2月并且该年的2月为闰月,天数加1
        temp4+=1;
    }
    //计算公历日离当年元旦的天数完成
    //判断公历日在春节前还是春节后
    if (temp4>=temp3){ //公历日在春节后或就是春节当日使用下面代码进行运算
        temp4-=temp3;
        month1=0x1;
        month_p=0x1;  //month_p为月份指向,公历日在春节前或就是春节当日month_p指向首月
        flag2=get_moon_day(month_p,table_addr); //检查该农历月为大小还是小月,大月返回1,小月返回0
        flag_y=0;
        if(flag2==0)temp1=0x1d; //小月29天
        else temp1=0x1e; //大小30天
        temp2=year_code[table_addr]&0xf0;
        temp2=_cror_(temp2,4);  //从数据表中取该年的闰月月份,如为0则该年无闰月
        while(temp4>=temp1){
            temp4-=temp1;
            month_p+=1;
            if(month1==temp2){
            flag_y=~flag_y;
            if(flag_y==0)month1+=1;
            }
            else month1+=1;
            flag2=get_moon_day(month_p,table_addr);
            if(flag2==0)temp1=0x1d;
            else temp1=0x1e;
        }
        day1=temp4+1;
    }
    else{  //公历日在春节前使用下面代码进行运算
        temp3-=temp4;
        if (year1==0x0){year1=0x63;c=1;}
        else year1-=1;
        table_addr-=0x3;
        month1=0xc;
        temp2=year_code[table_addr]&0xf0;
        temp2=_cror_(temp2,4);
        if (temp2==0)month_p=0xc; 
        else month_p=0xd; //
        /*
        month_p为月份指向,如果当年有闰月,一年有十三个月,月指向13,
无闰月指向12
        */
        flag_y=0;
        flag2=get_moon_day(month_p,table_addr);
        if(flag2==0)temp1=0x1d;
        else temp1=0x1e;
        while(temp3>temp1){
            temp3-=temp1;
            month_p-=1;
            if(flag_y==0)month1-=1;
            if(month1==temp2)flag_y=~flag_y;
            flag2=get_moon_day(month_p,table_addr);
            if(flag2==0)temp1=0x1d;
            else temp1=0x1e;
         }
        day1=temp1-temp3+1;
    }
    c_moon=c;                 //HEX->BCD ,运算结束后,把数据转换为BCD数据
    temp1=year1/10;
    temp1=_crol_(temp1,4);
    temp2=year1%10;
    year_moon=temp1|temp2;
    temp1=month1/10;
    temp1=_crol_(temp1,4);
    temp2=month1%10;
    month_moon=temp1|temp2;
    temp1=day1/10;
    temp1=_crol_(temp1,4);
    temp2=day1%10;
    day_moon=temp1|temp2;
}