c万年历.asm

使用C51单片机编写的“c万年历”。能显示年月日时间等等~

再次优化，编译后代码又少了近50字节。同时修改一个Bug：原先计算天数在闰年并且月份大于2月（>2）时天数加1。反向条件后应该是非闰年或者月份小于等于2月（<=2）。结果少了等于（只<2）。这样造成闰年时且当前月为2月时农历会比较实际的多出一天，在此修正。

/****************************************************/
/* 获取当前日期的农历及星期      */
/****************************************************/

/*==================================================*/
/*公历年对应的农历数据,每年三字节, 格式:   */
/*第一字节BIT7-4 位表示闰月月份,值为0 为无闰月,  */
/*BIT3-0 对应农历第1-4 月的大小      */
/*第二字节BIT7-0 对应农历第5-12 月大小,    */
/*第三字节BIT7 表示农历第13个月大小月份对应的位  */
/*为1表示本农历月大(30 天),为0 表示小(29 天)  */
/*第三字节BIT6-5 表示春节的公历月份,BIT4-0 表示春节的公历日期 */
/*类型:Byte:unsigned char  Word:unsigned int  */
/*本代码中Tim[0]/Tim[1]/Tim[2]分别为当前年月日数据  */
/*其中Tim[0]Bit7表示世纪,1为20世纪19xx,0为21世纪20xx*/
/*Tim[10]为周数据/Tim[7]/Tim[8]/Tim[9]为农历数据,根据需要自行更换*/
/*==================================================*/

Byte code year_code[597]={
0x04,0xAe,0x53,0x0A,0x57,0x48,0x55,0x26,0xBd, // 1901-1903  0
0x0d,0x26,0x50,0x0d,0x95,0x44,0x46,0xAA,0xB9, // 1904-1906  9
0x05,0x6A,0x4d,0x09,0xAd,0x42,0x24,0xAe,0xB6, // 1907-1909  18
0x04,0xAe,0x4A,0x6A,0x4d,0xBe,0x0A,0x4d,0x52, // 1910-1912  27
0x0d,0x25,0x46,0x5d,0x52,0xBA,0x0B,0x54,0x4e, // 1913-1915  36
0x0d,0x6A,0x43,0x29,0x6d,0x37,0x09,0x5B,0x4B, // 1916-1918  45
0x74,0x9B,0xC1,0x04,0x97,0x54,0x0A,0x4B,0x48, // 1919-1921  54
0x5B,0x25,0xBC,0x06,0xA5,0x50,0x06,0xd4,0x45, // 1922-1924  63
0x4A,0xdA,0xB8,0x02,0xB6,0x4d,0x09,0x57,0x42, // 1925-1927  72
0x24,0x97,0xB7,0x04,0x97,0x4A,0x66,0x4B,0x3e, // 1928-1930  81
0x0d,0x4A,0x51,0x0e,0xA5,0x46,0x56,0xd4,0xBA, // 1931-1933  90
  0x05,0xAd,0x4e,0x02,0xB6,0x44,0x39,0x37,0x38, // 1934-1936  99
0x09,0x2e,0x4B,0x7C,0x96,0xBf,0x0C,0x95,0x53, // 1937-1939  108
0x0d,0x4A,0x48,0x6d,0xA5,0x3B,0x0B,0x55,0x4f, // 1940-1942  117
0x05,0x6A,0x45,0x4A,0xAd,0xB9,0x02,0x5d,0x4d, // 1943-1945  126
0x09,0x2d,0x42,0x2C,0x95,0xB6,0x0A,0x95,0x4A, // 1946-1948  135
0x7B,0x4A,0xBd,0x06,0xCA,0x51,0x0B,0x55,0x46, // 1949-1951  144
0x55,0x5A,0xBB,0x04,0xdA,0x4e,0x0A,0x5B,0x43, // 1952-1954  153
0x35,0x2B,0xB8,0x05,0x2B,0x4C,0x8A,0x95,0x3f, // 1955-1957  162
0x0e,0x95,0x52,0x06,0xAA,0x48,0x7A,0xd5,0x3C, // 1958-1960  171
0x0A,0xB5,0x4f,0x04,0xB6,0x45,0x4A,0x57,0x39, // 1961-1963  180
0x0A,0x57,0x4d,0x05,0x26,0x42,0x3e,0x93,0x35, // 1964-1966  189
0x0d,0x95,0x49,0x75,0xAA,0xBe,0x05,0x6A,0x51, // 1967-1969  195
0x09,0x6d,0x46,0x54,0xAe,0xBB,0x04,0xAd,0x4f, // 1970-1972  207
0x0A,0x4d,0x43,0x4d,0x26,0xB7,0x0d,0x25,0x4B, // 1973-1975  216
0x8d,0x52,0xBf,0x0B,0x54,0x52,0x0B,0x6A,0x47, // 1976-1978  225
0x69,0x6d,0x3C,0x09,0x5B,0x50,0x04,0x9B,0x45, // 1979-1981  234
0x4A,0x4B,0xB9,0x0A,0x4B,0x4d,0xAB,0x25,0xC2, // 1982-1984  243
0x06,0xA5,0x54,0x06,0xd4,0x49,0x6A,0xdA,0x3d, // 1985-1987  252
0x0A,0xB6,0x51,0x09,0x37,0x46,0x54,0x97,0xBB, // 1988-1990  261
0x04,0x97,0x4f,0x06,0x4B,0x44,0x36,0xA5,0x37, // 1991-1993  270
0x0e,0xA5,0x4A,0x86,0xB2,0xBf,0x05,0xAC,0x53, // 1994-1996  279
0x0A,0xB6,0x47,0x59,0x36,0xBC,0x09,0x2e,0x50, // 1997-1999  288
0x0C,0x96,0x45,0x4d,0x4A,0xB8,0x0d,0x4A,0x4C, // 2000-2002  297
0x0d,0xA5,0x41,0x25,0xAA,0xB6,0x05,0x6A,0x49, // 2003-2005  306
0x7A,0xAd,0xBd,0x02,0x5d,0x52,0x09,0x2d,0x47, // 2006-2008  315
0x5C,0x95,0xBA,0x0A,0x95,0x4e,0x0B,0x4A,0x43, // 2009-2011  324
0x4B,0x55,0x37,0x0A,0xd5,0x4A,0x95,0x5A,0xBf, // 2012-2014  333
0x04,0xBA,0x53,0x0A,0x5B,0x48,0x65,0x2B,0xBC, // 2015-2017  342
0x05,0x2B,0x50,0x0A,0x93,0x45,0x47,0x4A,0xB9, // 2018-2020  351
0x06,0xAA,0x4C,0x0A,0xd5,0x41,0x24,0xdA,0xB6, // 2021-2023  360
0x04,0xB6,0x4A,0x69,0x57,0x3d,0x0A,0x4e,0x51, // 2024-2026  369
0x0d,0x26,0x46,0x5e,0x93,0x3A,0x0d,0x53,0x4d, // 2027-2029  378
0x05,0xAA,0x43,0x36,0xB5,0x37,0x09,0x6d,0x4B, // 2030-2032  387
0xB4,0xAe,0xBf,0x04,0xAd,0x53,0x0A,0x4d,0x48, // 2033-2035  396
0x6d,0x25,0xBC,0x0d,0x25,0x4f,0x0d,0x52,0x44, // 2036-2038  405
0x5d,0xAA,0x38,0x0B,0x5A,0x4C,0x05,0x6d,0x41, // 2039-2041  414
0x24,0xAd,0xB6,0x04,0x9B,0x4A,0x7A,0x4B,0xBe, // 2042-2044  423
0x0A,0x4B,0x51,0x0A,0xA5,0x46,0x5B,0x52,0xBA, // 2045-2047  432
0x06,0xd2,0x4e,0x0A,0xdA,0x42,0x35,0x5B,0x37, // 2048-2050  441
0x09,0x37,0x4B,0x84,0x97,0xC1,0x04,0x97,0x53, // 2051-2053  450
0x06,0x4B,0x48,0x66,0xA5,0x3C,0x0e,0xA5,0x4f, // 2054-2056  459
0x06,0xB2,0x44,0x4A,0xB6,0x38,0x0A,0xAe,0x4C, // 2057-2059  468
0x09,0x2e,0x42,0x3C,0x97,0x35,0x0C,0x96,0x49, // 2060-2062  477
0x7d,0x4A,0xBd,0x0d,0x4A,0x51,0x0d,0xA5,0x45, // 2063-2065  486
0x55,0xAA,0xBA,0x05,0x6A,0x4e,0x0A,0x6d,0x43, // 2066-2068  495
0x45,0x2e,0xB7,0x05,0x2d,0x4B,0x8A,0x95,0xBf, // 2069-2071  504
0x0A,0x95,0x53,0x0B,0x4A,0x47,0x6B,0x55,0x3B, // 2072-2074  513
0x0A,0xd5,0x4f,0x05,0x5A,0x45,0x4A,0x5d,0x38, // 2075-2077  522
0x0A,0x5B,0x4C,0x05,0x2B,0x42,0x3A,0x93,0xB6, // 2078-2080  531
0x06,0x93,0x49,0x77,0x29,0xBd,0x06,0xAA,0x51, // 2081-2083  540
0x0A,0xd5,0x46,0x54,0xdA,0xBA,0x04,0xB6,0x4e, // 2084-2086  549
0x0A,0x57,0x43,0x45,0x27,0x38,0x0d,0x26,0x4A, // 2087-2089  558
0x8e,0x93,0x3e,0x0d,0x52,0x52,0x0d,0xAA,0x47, // 2090-2092  567
0x66,0xB5,0x3B,0x05,0x6d,0x4f,0x04,0xAe,0x45, // 2093-2095  576
0x4A,0x4e,0xB9,0x0A,0x4d,0x4C,0x0d,0x15,0x41, // 2096-2098  585
0x2d,0x92,0xB5,                               // 2099    594
};
//月份天数数据表
Byte code day_code1[9]={0x0,0x1f,0x3b,0x5a,0x78,0x97,0xb5,0xd4,0xf3};
Word code day_code2[3]={0x111,0x130,0x14e};
//月修正数据表
Byte code week_code[12]={0,3,3,6,1,4,6,2,5,0,3,5}; 

void Conver_week(void)
/*=======获取当前日期的星期====================================*/
{
    Byte temp1,temp2,year,month,day;

year =Tim[0]&0x7f;     //加载年月日数据,如为BCD则需转为十进制
month=Tim[1];
day  =Tim[2];

    if(Tim[0]>>7==0){year+=0x64;}  //如果为21世纪,年份数加100
    temp1=year/0x4;      //所过闰年数只算1900年之后的
    temp2=(year+temp1)%0x7;    //为节省资源,先进行一次取余,避免数大于0xff
    temp2=temp2+day+week_code[month-1];
    if(year%0x4==0&&month<3)temp2-=1; //如果是闰年但不到3月则减一天
    Tim[10]=temp2%0x7;     //将星期数据写到指定星期变量Tim[9]
}

Byte get_moon_day(Byte month_p,Word code_addr)
/*读取数据表中农历月的大月或小月,如果该月大返回1,小返回0*/
{
Byte temp,temp5;

temp=0x80>>((month_p+3)%8);
temp5=(month_p+3)/8;
temp=year_code[code_addr+temp5]&temp;
if(temp==0){return(29);}else{return(30);}
}

void Conversion(void)
/*==转换当前农历信息====================================*/
{   Byte year,month,day;
Byte temp1,temp2,temp3,month_p;
    Word temp4,code_addr;
    bit  flag_y;
  
year =Tim[0]&0x7f;   //加载年月日数据,如为BCD则需转为十进制  
month=Tim[1];
day  =Tim[2];

code_addr=year-1;   //定位数据表地址      
    if(Tim[0]>>7==0)code_addr+=100;
code_addr*=3;

    temp1=(year_code[code_addr+2]&0x60)>>5; //取当年春节所在的公历月份   
    temp2=year_code[code_addr+2]&0x1f;   //取当年春节所在的公历日   
temp3=temp2-1;       //计算当年春节离当年元旦的天数,春节只会在公历1月或2月

if(temp1!=1)temp3+=31;     //如果不在1月则天数加上31天(1月)
    if(month<10){temp4=day_code1[month-1]+day;}
    else{temp4=day_code2[month-10]+day;}
    if((month<=2)||(year%0x04!=0))temp4-=1; //如果公历月小于等于2月或者该年的2月非闰月,天数减1    
    
temp2=(year_code[code_addr]&0xf0)>>4; //从数据表中取该年的闰月月份,如为0则该年无闰月
  
if (temp4>=temp3)      //判断公历日在春节前还是春节后
{
        //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;
        month  = 1;        
        flag_y = 0;
  month_p= 1;  //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
  temp1=get_moon_day(month_p,code_addr); //检查该农历月为大小还是小月,大月返回1,小月返回0 
        while(temp4>=temp1)
  {
            temp4-=temp1;
            month_p+=1;
            if(month==temp2)
   {
             flag_y=~flag_y;
             if(flag_y==0)month+=1;
            }else{month+=1;}
            temp1=get_moon_day(month_p,code_addr);
        }
        day=temp4+1;
    }
    else
{  
        //公历日在春节前使用下面代码进行运算
  temp3-=temp4;
        if(year==0){year=0xe3;}else{year-=1;}
        code_addr-=3;
        month  = 12;
        flag_y = 0;
  if(temp2==0){month_p=12;}else{month_p=13;} //如果当年有闰月,一年有十三个月,月指向13,无闰月指向12        
  temp1=get_moon_day(month_p,code_addr);
        while(temp3>temp1)
  {
            temp3-=temp1;
            month_p-=1;
            if(flag_y==0)month-=1;
            if(month==temp2)flag_y=~flag_y;
            temp1=get_moon_day(month_p,code_addr);
         }
        day=temp1-temp3+1;
    }
Tim[7] = year|(Tim[0]&0x80);;    //将农历信息写进指定变量
Tim[8] = month;
Tim[9] = day;
Conver_week();        //最后进行星期转换(根据需要自行选用)
}