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#include<reg52.h> //QQ1137035271
#include <string.h>
#include <intrins.h>
#define uint unsigned int
#define uchar unsigned char
#define wd 1 //定義是否有溫度功能 =0時無溫度，=1時有溫度
#define yh 0x80 //LCD第一行的初始位置,因為LCD1602字符地址首位D7恒定為1（100000000=80）
#define er 0x80+0x40 //LCD第二行初始位置（因為第二行第一個字符位置地址是0x40）
//液晶屏的與C51之間的引腳連接定義（顯示數(shù)據(jù)線接C51的P0口）
sbit en=P2^6;
sbit rw=P2^5; //如果硬件上rw接地，就不用寫這句和后面的rw=0了
sbit rs=P2^4;
//校時按鍵與C51的引腳連接定義
sbit menu=P3^0; //菜單鍵
sbit set=P3^1; //設(shè)置鍵
sbit add=P3^2; //加鍵
sbit dec=P3^3; //減鍵
sbit ensure=P3^4; //確認鍵
sbit DQ=P2^0; //
sbit buzzer=P1^4; //蜂鳴器，通過三極管8550驅(qū)動，端口低電平響
sbit led=P2^4; //LCD背光開關(guān)
bit led1=1;
unsigned char temp_miao;
unsigned char bltime; //背光亮的時間
//DS1302時鐘芯片與C51之間的引腳連接定義
sbit IO=P1^1;
sbit SCLK=P1^2;
sbit RST=P1^0;
uchar a,miao,shi,fen,ri,yue,nian,week,setn,temp;
uint flag;
//flag用于讀取頭文件中的溫度值，和顯示溫度值
bit c_moon;
uchar nz_shi=12,nz_fen=0,nz_miao=0,setNZn; //定義鬧鐘變量
uchar shangyimiao,bsn,temp_hour; //記錄上一秒時間
uchar T_NL_NZ=0; //計數(shù)器
bit timerOn=0; //鬧鐘啟用標志位
bit baoshi=0; //整點報時標志位
bit p_r=0; //平年/潤年 =0表示平年，=1表示潤年
data uchar year_moon,month_moon,day_moon,week;
sbit ACC0=ACC^0;
sbit ACC7=ACC^7;
/************************************************************
ACC累加器=A
ACC.0=E0H
ACC.0就是ACC的第0位。Acc可以位尋址。
累加器ACC是一個8位的存儲單元，是用來放數(shù)據(jù)的。但是，這個存儲單元有其特殊的地位，
是單片機中一個非常關(guān)鍵的單元，很多運算都要通過ACC來進行。以后在學習指令時，
常用A來表示累加器。但有一些地方例外，比如在PUSH指令中，就必須用ACC這樣的名字。
一般的說法，A代表了累加器中的內(nèi)容、而ACC代表的是累加器的地址。
***************************************************************/
//********陽歷轉(zhuǎn)換陰歷表************************************
/*
公歷年對應(yīng)的農(nóng)歷數(shù)據(jù),每年三字節(jié),
格式第一字節(jié)BIT7-4 位表示閏月月份,值為0 為無閏月,BIT3-0 對應(yīng)農(nóng)歷第1-4 月的大小
第二字節(jié)BIT7-0 對應(yīng)農(nóng)歷第5-12 月大小,第三字節(jié)BIT7 表示農(nóng)歷第13 個月大小
月份對應(yīng)的位為1 表示本農(nóng)歷月大(30 天),為0 表示小(29 天)
第三字節(jié)BIT6-5 表示春節(jié)的公歷月份,BIT4-0 表示春節(jié)的公歷日期
*/
code uchar year_code[597]={
0x04,0xAe,0x53, //1901 0
0x0A,0x57,0x48, //1902 3
0x55,0x26,0xBd, //1903 6
0x0d,0x26,0x50, //1904 9
0x0d,0x95,0x44, //1905 12
0x46,0xAA,0xB9, //1906 15
0x05,0x6A,0x4d, //1907 18
0x09,0xAd,0x42, //1908 21
0x24,0xAe,0xB6, //1909
0x04,0xAe,0x4A, //1910
0x6A,0x4d,0xBe, //1911
0x0A,0x4d,0x52, //1912
0x0d,0x25,0x46, //1913
0x5d,0x52,0xBA, //1914
0x0B,0x54,0x4e, //1915
0x0d,0x6A,0x43, //1916
0x29,0x6d,0x37, //1917
0x09,0x5B,0x4B, //1918
0x74,0x9B,0xC1, //1919
0x04,0x97,0x54, //1920
0x0A,0x4B,0x48, //1921
0x5B,0x25,0xBC, //1922
0x06,0xA5,0x50, //1923
0x06,0xd4,0x45, //1924
0x4A,0xdA,0xB8, //1925
0x02,0xB6,0x4d, //1926
0x09,0x57,0x42, //1927
0x24,0x97,0xB7, //1928
0x04,0x97,0x4A, //1929
0x66,0x4B,0x3e, //1930
0x0d,0x4A,0x51, //1931
0x0e,0xA5,0x46, //1932
0x56,0xd4,0xBA, //1933
0x05,0xAd,0x4e, //1934
0x02,0xB6,0x44, //1935
0x39,0x37,0x38, //1936
0x09,0x2e,0x4B, //1937
0x7C,0x96,0xBf, //1938
0x0C,0x95,0x53, //1939
0x0d,0x4A,0x48, //1940
0x6d,0xA5,0x3B, //1941
0x0B,0x55,0x4f, //1942
0x05,0x6A,0x45, //1943
0x4A,0xAd,0xB9, //1944
0x02,0x5d,0x4d, //1945
0x09,0x2d,0x42, //1946
0x2C,0x95,0xB6, //1947
0x0A,0x95,0x4A, //1948
0x7B,0x4A,0xBd, //1949
0x06,0xCA,0x51, //1950
0x0B,0x55,0x46, //1951
0x55,0x5A,0xBB, //1952
0x04,0xdA,0x4e, //1953
0x0A,0x5B,0x43, //1954
0x35,0x2B,0xB8, //1955
0x05,0x2B,0x4C, //1956
0x8A,0x95,0x3f, //1957
0x0e,0x95,0x52, //1958
0x06,0xAA,0x48, //1959
0x7A,0xd5,0x3C, //1960
0x0A,0xB5,0x4f, //1961
0x04,0xB6,0x45, //1962
0x4A,0x57,0x39, //1963
0x0A,0x57,0x4d, //1964
0x05,0x26,0x42, //1965
0x3e,0x93,0x35, //1966
0x0d,0x95,0x49, //1967
0x75,0xAA,0xBe, //1968
0x05,0x6A,0x51, //1969
0x09,0x6d,0x46, //1970
0x54,0xAe,0xBB, //1971
0x04,0xAd,0x4f, //1972
0x0A,0x4d,0x43, //1973
0x4d,0x26,0xB7, //1974
0x0d,0x25,0x4B, //1975
0x8d,0x52,0xBf, //1976
0x0B,0x54,0x52, //1977
0x0B,0x6A,0x47, //1978
0x69,0x6d,0x3C, //1979
0x09,0x5B,0x50, //1980
0x04,0x9B,0x45, //1981
0x4A,0x4B,0xB9, //1982
0x0A,0x4B,0x4d, //1983
0xAB,0x25,0xC2, //1984
0x06,0xA5,0x54, //1985
0x06,0xd4,0x49, //1986
0x6A,0xdA,0x3d, //1987
0x0A,0xB6,0x51, //1988
0x09,0x37,0x46, //1989
0x54,0x97,0xBB, //1990
0x04,0x97,0x4f, //1991
0x06,0x4B,0x44, //1992
0x36,0xA5,0x37, //1993
0x0e,0xA5,0x4A, //1994
0x86,0xB2,0xBf, //1995
0x05,0xAC,0x53, //1996
0x0A,0xB6,0x47, //1997
0x59,0x36,0xBC, //1998
0x09,0x2e,0x50, //1999 294
0x0C,0x96,0x45, //2000 297
0x4d,0x4A,0xB8, //2001
0x0d,0x4A,0x4C, //2002
0x0d,0xA5,0x41, //2003
0x25,0xAA,0xB6, //2004
0x05,0x6A,0x49, //2005
0x7A,0xAd,0xBd, //2006
0x02,0x5d,0x52, //2007
0x09,0x2d,0x47, //2008
0x5C,0x95,0xBA, //2009
0x0A,0x95,0x4e, //2010
0x0B,0x4A,0x43, //2011
0x4B,0x55,0x37, //2012
0x0A,0xd5,0x4A, //2013
0x95,0x5A,0xBf, //2014
0x04,0xBA,0x53, //2015
0x0A,0x5B,0x48, //2016
0x65,0x2B,0xBC, //2017
0x05,0x2B,0x50, //2018
0x0A,0x93,0x45, //2019
0x47,0x4A,0xB9, //2020
0x06,0xAA,0x4C, //2021
0x0A,0xd5,0x41, //2022
0x24,0xdA,0xB6, //2023
0x04,0xB6,0x4A, //2024
0x69,0x57,0x3d, //2025
0x0A,0x4e,0x51, //2026
0x0d,0x26,0x46, //2027
0x5e,0x93,0x3A, //2028
0x0d,0x53,0x4d, //2029
0x05,0xAA,0x43, //2030
0x36,0xB5,0x37, //2031
0x09,0x6d,0x4B, //2032
0xB4,0xAe,0xBf, //2033
0x04,0xAd,0x53, //2034
0x0A,0x4d,0x48, //2035
0x6d,0x25,0xBC, //2036
0x0d,0x25,0x4f, //2037
0x0d,0x52,0x44, //2038
0x5d,0xAA,0x38, //2039
0x0B,0x5A,0x4C, //2040
0x05,0x6d,0x41, //2041
0x24,0xAd,0xB6, //2042
0x04,0x9B,0x4A, //2043
0x7A,0x4B,0xBe, //2044
0x0A,0x4B,0x51, //2045
0x0A,0xA5,0x46, //2046
0x5B,0x52,0xBA, //2047
0x06,0xd2,0x4e, //2048
0x0A,0xdA,0x42, //2049
0x35,0x5B,0x37, //2050
0x09,0x37,0x4B, //2051
0x84,0x97,0xC1, //2052
0x04,0x97,0x53, //2053
0x06,0x4B,0x48, //2054
0x66,0xA5,0x3C, //2055
0x0e,0xA5,0x4f, //2056
0x06,0xB2,0x44, //2057
0x4A,0xB6,0x38, //2058
0x0A,0xAe,0x4C, //2059
0x09,0x2e,0x42, //2060
0x3C,0x97,0x35, //2061
0x0C,0x96,0x49, //2062
0x7d,0x4A,0xBd, //2063
0x0d,0x4A,0x51, //2064
0x0d,0xA5,0x45, //2065
0x55,0xAA,0xBA, //2066
0x05,0x6A,0x4e, //2067
0x0A,0x6d,0x43, //2068
0x45,0x2e,0xB7, //2069
0x05,0x2d,0x4B, //2070
0x8A,0x95,0xBf, //2071
0x0A,0x95,0x53, //2072
0x0B,0x4A,0x47, //2073
0x6B,0x55,0x3B, //2074
0x0A,0xd5,0x4f, //2075
0x05,0x5A,0x45, //2076
0x4A,0x5d,0x38, //2077
0x0A,0x5B,0x4C, //2078
0x05,0x2B,0x42, //2079
0x3A,0x93,0xB6, //2080
0x06,0x93,0x49, //2081
0x77,0x29,0xBd, //2082
0x06,0xAA,0x51, //2083
0x0A,0xd5,0x46, //2084
0x54,0xdA,0xBA, //2085
0x04,0xB6,0x4e, //2086
0x0A,0x57,0x43, //2087
0x45,0x27,0x38, //2088
0x0d,0x26,0x4A, //2089
0x8e,0x93,0x3e, //2090
0x0d,0x52,0x52, //2091
0x0d,0xAA,0x47, //2092
0x66,0xB5,0x3B, //2093
0x05,0x6d,0x4f, //2094
0x04,0xAe,0x45, //2095
0x4A,0x4e,0xB9, //2096
0x0A,0x4d,0x4C, //2097
0x0d,0x15,0x41, //2098
0x2d,0x92,0xB5, //2099
};
///月份數(shù)據(jù)表
code uchar day_code1[9]={0x0,0x1f,0x3b,0x5a,0x78,0x97,0xb5,0xd4,0xf3};
code uint day_code2[3]={0x111,0x130,0x14e};
/*
函數(shù)功能:輸入BCD陽歷數(shù)據(jù),輸出BCD陰歷數(shù)據(jù)(只允許1901-2099年)
調(diào)用函數(shù)示例:Conversion(c_sun,year_sun,month_sun,day_sun)
如:計算2004年10月16日Conversion(0,0x4,0x10,0x16);
c_sun,year_sun,month_sun,day_sun均為BCD數(shù)據(jù),c_sun為世紀標志位,c_sun=0為21世
紀,c_sun=1為19世紀
調(diào)用函數(shù)后,原有數(shù)據(jù)不變,讀c_moon,year_moon,month_moon,day_moon得出陰歷BCD數(shù)據(jù)
*/
bit c_moon;
data uchar year_moon,month_moon,day_moon,week;
//子函數(shù),用于讀取數(shù)據(jù)表中農(nóng)歷月的大月或小月,如果該月為大返回1,為小返回0
bit 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);}
}
}
/*
函數(shù)功能:輸入BCD陽歷數(shù)據(jù),輸出BCD陰歷數(shù)據(jù)(只允許1901-2099年)
調(diào)用函數(shù)示例:Conversion(c_sun,year_sun,month_sun,day_sun)
如:計算2004年10月16日Conversion(0,0x4,0x10,0x16);
c_sun,year_sun,month_sun,day_sun均為BCD數(shù)據(jù),c_sun為世紀標志位,c_sun=0為21世
紀,c_sun=1為19世紀
調(diào)用函數(shù)后,原有數(shù)據(jù)不變,讀c_moon,year_moon,month_moon,day_moon得出陰歷BCD數(shù)據(jù)
*/
void Conversion(bit c,uchar year,uchar month,uchar day)
{ //c=0 為21世紀,c=1 為19世紀輸入輸出數(shù)據(jù)均為BCD數(shù)據(jù)
uchar temp1,temp2,temp3,month_p;
uint temp4,table_addr;
bit flag2,flag_y;
temp1=year/16; //BCD->hex 先把數(shù)據(jù)轉(zhuǎn)換為十六進制
temp2=year%16;
// year=temp1*10+temp2;
year=temp1*16+temp2;
temp1=month/16;
temp2=month%16;
//month=temp1*10+temp2;
month=temp1*16+temp2;
temp1=day/16;
temp2=day%16;
//day=temp1*10+temp2;
day=temp1*16+temp2;
//定位數(shù)據(jù)表地址
if(c==0){
table_addr=(year+0x64-1)*0x3;
}
else {
table_addr=(year-1)*0x3;
}
//定位數(shù)據(jù)表地址完成
//取當年春節(jié)所在的公歷月份
temp1=year_code[table_addr+2]&0x60;
temp1=_cror_(temp1,5);
//取當年春節(jié)所在的公歷月份完成
//取當年春節(jié)所在的公歷日
temp2=year_code[table_addr+2]&0x1f;
//取當年春節(jié)所在的公歷日完成
// 計算當年春年離當年元旦的天數(shù),春節(jié)只會在公歷1月或2月
if(temp1==0x1){
temp3=temp2-1;
}
else{
temp3=temp2+0x1f-1;
}
// 計算當年春年離當年元旦的天數(shù)完成
//計算公歷日離當年元旦的天數(shù),為了減少運算,用了兩個表
//day_code1[9],day_code2[3]
//如果公歷月在九月或前,天數(shù)會少于0xff,用表day_code1[9],
//在九月后,天數(shù)大于0xff,用表day_code2[3]
//如輸入公歷日為8月10日,則公歷日離元旦天數(shù)為day_code1[8-1]+10-1
//如輸入公歷日為11月10日,則公歷日離元旦天數(shù)為day_code2[11-10]+10-1
if (month<10){
temp4=day_code1[month-1]+day-1;
}
else{
temp4=day_code2[month-10]+day-1;
}
if ((month>0x2)&&(year%0x4==0)){ //如果公歷月大于2月并且該年的2月為閏月,天數(shù)加1
temp4+=1;
}
//計算公歷日離當年元旦的天數(shù)完成
//判斷公歷日在春節(jié)前還是春節(jié)后
if (temp4>=temp3){ //公歷日在春節(jié)后或就是春節(jié)當日使用下面代碼進行運算
temp4-=temp3;
month=0x1;
month_p=0x1; //month_p為月份指向,公歷日在春節(jié)前或就是春節(jié)當日month_p指向首月
flag2=get_moon_day(month_p,table_addr); //檢查該農(nóng)歷月為大小還是小月,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); //從數(shù)據(jù)表中取該年的閏月月份,如為0則該年無閏月
while(temp4>=temp1){
temp4-=temp1;
month_p+=1;
if(month==temp2){
flag_y=~flag_y;
if(flag_y==0)month+=1;
}
else month+=1;
flag2=get_moon_day(month_p,table_addr);
if(flag2==0)temp1=0x1d;
else temp1=0x1e;
}
day=temp4+1;
}
else{ //公歷日在春節(jié)前使用下面代碼進行運算
temp3-=temp4;
if (year==0x0){year=0x63;c=1;}
else year-=1;
table_addr-=0x3;
month=0xc;
temp2=year_code[table_addr]&0xf0;
temp2=_cror_(temp2,4);
if (temp2==0)
month_p=0xc;
else
month_p=0xd; //
//month_p為月份指向,如果當年有閏月,一年有十三個月,月指向13,無閏月指向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)month-=1;
if(month==temp2)flag_y=~flag_y;
flag2=get_moon_day(month_p,table_addr);
if(flag2==0)temp1=0x1d;
else temp1=0x1e;
}
day=temp1-temp3+1;
}
c_moon=c; //HEX->BCD ,運算結(jié)束后,把數(shù)據(jù)轉(zhuǎn)換為BCD數(shù)據(jù)
temp1=year/10;
temp1=_crol_(temp1,4);
temp2=year%10;
year_moon=temp1|temp2;
temp1=month/10;
temp1=_crol_(temp1,4);
temp2=month%10;
month_moon=temp1|temp2;
temp1=day/10;
temp1=_crol_(temp1,4);
temp2=day%10;
day_moon=temp1|temp2;
}
/*
函數(shù)功能:輸入BCD陽歷數(shù)據(jù),輸出BCD星期數(shù)據(jù)(只允許1901-2099年)
調(diào)用函數(shù)示例:Conver_week(c_sun,year_sun,month_sun,day_sun)
如:計算2004年10月16日Conversion(0,0x4,0x10,0x16);
c_sun,year_sun,month_sun,day_sun均為BCD數(shù)據(jù),c_sun為世紀標志位,c_sun=0為21世
紀,c_sun=1為19世紀
調(diào)用函數(shù)后,原有數(shù)據(jù)不變,讀week得出陰歷BCD數(shù)據(jù)
*/
code uchar table_week[12]={0,3,3,6,1,4,6,2,5,0,3,5}; //月修正數(shù)據(jù)表
/*
算法:日期+年份+所過閏年數(shù)+月較正數(shù)之和除7 的余數(shù)就是星期但如果是在
閏年又不到3 月份上述之和要減一天再除7
星期數(shù)為0
*/
void Conver_week(uchar year,uchar month,uchar day)
{//c=0 為21世紀,c=1 為19世紀輸入輸出數(shù)據(jù)均為BCD數(shù)據(jù)
uchar p1,p2;
year+=0x64; //如果為21世紀,年份數(shù)加100
p1=year/0x4; //所過閏年數(shù)只算1900年之后的
p2=year+p1;
p2=p2%0x7; //為節(jié)省資源,先進行一次取余,避免數(shù)大于0xff,避免使用整型數(shù)據(jù)
p2=p2+day+table_week[month-1];
if (year%0x4==0&&month<3)p2-=1;
week=p2%0x7;
}
/**************************************************************/
uchar code tab1[]={"20 - - "}; //年顯示的固定字符
uchar code tab2[]={" : : "}; //時間顯示的固定字符
uchar code nlp[]={"NL: - - PING"}; //農(nóng)歷平年顯示
uchar code nlr[]={"NL: - - RUN "}; //農(nóng)歷潤年顯示
uchar code NZd[]={"timer: - - "}; //顯示鬧鐘固定點
uchar code qk[]= {" "}; //清空顯示
uchar code tm[]= {"time"};
//=====================DS18B20=============================================
//******************************************************************************
void Delayns(int num)//延時函數(shù)
{
while(num--);
}
//******************************************************************************
void Init_DS18B20(void)//初始化ds1820
{
unsigned char x=0;
DQ = 1; //DQ復(fù)位
Delayns(8); //稍做延時
DQ = 0; //單片機將DQ拉低
Delayns(80); //精確延時大于 480us
DQ = 1; //拉高總線
Delayns(14);
x=DQ; //稍做延時后如果x=0則初始化成功 x=1則初始化失敗
Delayns(20);
}
//******************************************************************************
unsigned char ReadOneChar(void)//讀一個字節(jié)
{
unsigned char i=0;
unsigned char dat = 0;
for (i=8;i>0;i--)
{
DQ = 0; // 給脈沖信號
dat>>=1;
DQ = 1; // 給脈沖信號
if(DQ)
dat|=0x80;
Delayns(4);
}
return(dat);
}
//******************************************************************************
void WriteOneChar(unsigned char dat)//寫一個字節(jié)
{
unsigned char i=0;
for (i=8; i>0; i--)
{
DQ = 0;
DQ = dat&0x01;
Delayns(5);
DQ = 1;
dat>>=1;
}
}
//******************************************************************************
unsigned int ReadTemperature(void)//讀取溫度
{
unsigned char a=0;
unsigned char b=0;
unsigned int t=0;
float tt=0;
Init_DS18B20();
WriteOneChar(0xCC); // 跳過讀序號列號的操作
WriteOneChar(0x44); // 啟動溫度轉(zhuǎn)換
Init_DS18B20();
WriteOneChar(0xCC); //跳過讀序號列號的操作
WriteOneChar(0xBE); //讀取溫度寄存器
a=ReadOneChar(); //讀低8位
b=ReadOneChar(); //讀高8位
t=b;
t<<=8;
t=t|a;
tt=t*0.0625;
t= tt*10+0.5; //放大10倍輸出并四舍五入
return(t);
}
//*****************************************************************************
//延時函數(shù)，后面經(jīng)常調(diào)用
void delay(uint xms)//延時函數(shù)，有參函數(shù)
{
uint x,y;
for(x=xms;x>0;x--)
for(y=110;y>0;y--);
}
/********液晶寫入指令函數(shù)與寫入數(shù)據(jù)函數(shù)，以后可調(diào)用**************/
/*在這個程序中，液晶寫入有關(guān)函數(shù)會在DS1302的函數(shù)中調(diào)用，所以液晶程序要放在前面*/
write_1602com(uchar com)//****液晶寫入指令函數(shù)****
{
rs=0;//數(shù)據(jù)/指令選擇置為指令
rw=0; //讀寫選擇置為寫
P0=com;//送入數(shù)據(jù)
delay(1);
en=1;//拉高使能端，為制造有效的下降沿做準備
delay(1);
en=0;//en由高變低，產(chǎn)生下降沿，液晶執(zhí)行命令
}
write_1602dat(uchar dat)//***液晶寫入數(shù)據(jù)函數(shù)****
{
rs=1;//數(shù)據(jù)/指令選擇置為數(shù)據(jù)
rw=0; //讀寫選擇置為寫
P0=dat;//送入數(shù)據(jù)
delay(1);
en=1; //en置高電平，為制造下降沿做準備
delay(1);
en=0; //en由高變低，產(chǎn)生下降沿，液晶執(zhí)行命令
}
lcd_init()//***液晶初始化函數(shù)****
{
write_1602com(0x38);//設(shè)置液晶工作模式，意思：16*2行顯示，5*7點陣，8位數(shù)據(jù)
write_1602com(0x0c);//開顯示不顯示光標
write_1602com(0x06);//整屏不移動，光標自動右移
write_1602com(0x01);//清顯示
write_1602com(yh+1);//日歷顯示固定符號從第一行第1個位置之后開始顯示
for(a=0;a<14;a++)
{
write_1602dat(tab1[a]);//向液晶屏寫日歷顯示的固定符號部分
//delay(3);
}
write_1602com(er);//時間顯示固定符號寫入位置，從第2個位置后開始顯示
for(a=0;a<8;a++)
{
write_1602dat(tab2[a]);//寫顯示時間固定符號，兩個冒號
//delay(3);
}
}
/*********************over***********************/
/***************DS1302有關(guān)子函數(shù)********************/
void write_byte(uchar dat)//寫一個字節(jié)
{
ACC=dat;
RST=1;//啟動數(shù)據(jù)傳送
for(a=8;a>0;a--)
{
IO=ACC0;
SCLK=0;
SCLK=1;
ACC=ACC>>1;
}
}
uchar read_byte()//讀一個字節(jié)
{
RST=1;//啟動數(shù)據(jù)傳送
for(a=8;a>0;a--)
{
ACC7=IO;
SCLK=1;
SCLK=0;
ACC=ACC>>1;
}
return (ACC);
}
//----------------------------------------
void write_1302(uchar add,uchar dat)//向1302芯片寫函數(shù)，指定寫入地址，數(shù)據(jù)
{
RST=0;
SCLK=0;
RST=1;
write_byte(add);
write_byte(dat);
SCLK=1;
RST=0;
}
uchar read_1302(uchar add)//從1302讀數(shù)據(jù)函數(shù)，指定讀取數(shù)據(jù)來源地址
{
uchar temp;
RST=0;
SCLK=0;
RST=1;
write_byte(add);
temp=read_byte();
SCLK=1;
RST=0;
return(temp);
}
uchar BCD_Decimal(uchar bcd)//BCD碼轉(zhuǎn)十進制函數(shù)，輸入BCD，返回十進制
{
uchar Decimal;
Decimal=bcd>>4;
return(Decimal=Decimal*10+(bcd&=0x0F));
}
//--------------------------------------
void ds1302_init() //1302芯片初始化子函數(shù)(2010-01-07,12:00:00,week4)
{
RST=0;
SCLK=0;
write_1302(0x8e,0x00); //允許寫，禁止寫保護
//write_1302(0x80,0x00); //向DS1302內(nèi)寫秒寄存器80H寫入初始秒數(shù)據(jù)00
//write_1302(0x82,0x00);//向DS1302內(nèi)寫分寄存器82H寫入初始分數(shù)據(jù)00
//write_1302(0x84,0x12);//向DS1302內(nèi)寫小時寄存器84H寫入初始小時數(shù)據(jù)12
//write_1302(0x8a,0x04);//向DS1302內(nèi)寫周寄存器8aH寫入初始周數(shù)據(jù)4
//write_1302(0x86,0x07);//向DS1302內(nèi)寫日期寄存器86H寫入初始日期數(shù)據(jù)07
//write_1302(0x88,0x01);//向DS1302內(nèi)寫月份寄存器88H寫入初始月份數(shù)據(jù)01
//write_1302(0x8c,0x10);//向DS1302內(nèi)寫年份寄存器8cH寫入初始年份數(shù)據(jù)10
write_1302(0x8e,0x80); //打開寫保護
}
//------------------------------------
//溫度顯示子函數(shù)
void write_temp(uchar add,uint dat)//向LCD寫溫度數(shù)據(jù),并指定顯示位置
{
uint gw,sw,bw;
bw=dat/100;//取得百位
sw=dat%100/10;//取得十位數(shù)字
gw=dat%10;//取得個位數(shù)字
write_1602com(er+add);//er是頭文件規(guī)定的值0x80+0x40
write_1602dat(0x30+bw);
write_1602dat(0x30+sw);//數(shù)字+30得到該數(shù)字的LCD1602顯示碼
write_1602dat('.');
write_1602dat(0x30+gw);//數(shù)字+30得到該數(shù)字的LCD1602顯示碼
write_1602dat(0xdf);//顯示溫度的小圓圈符號，0xdf是液晶屏字符庫的該符號地址碼
write_1602dat(0x43); //顯示"C"符號，0x43是液晶屏字符庫里大寫C的地址碼
}
//------------------------------------
//時分秒顯示子函數(shù)
void write_sfm(uchar add,uchar dat)//向LCD寫時分秒,有顯示位置加、現(xiàn)示數(shù)據(jù)，兩個參數(shù)
{
uchar gw,sw;
gw=dat%10;//取得個位數(shù)字
sw=dat/10;//取得十位數(shù)字
write_1602com(er+add);//er是頭文件規(guī)定的值0x80+0x40
write_1602dat(0x30+sw);//數(shù)字+30得到該數(shù)字的LCD1602顯示碼
write_1602dat(0x30+gw);//數(shù)字+30得到該數(shù)字的LCD1602顯示碼
}
//-------------------------------------
//年月日顯示子函數(shù)
void write_nyr(uchar add,uchar dat)//向LCD寫年月日，有顯示位置加數(shù)、顯示數(shù)據(jù)，兩個參數(shù)
{
uchar gw,sw;
gw=dat%10;//取得個位數(shù)字
sw=dat/10;//取得十位數(shù)字
write_1602com(yh+add);//設(shè)定顯示位置為第一個位置+add
write_1602dat(0x30+sw);//數(shù)字+30得到該數(shù)字的LCD1602顯示碼
write_1602dat(0x30+gw);//數(shù)字+30得到該數(shù)字的LCD1602顯示碼
}
//------------------------------------
//農(nóng)歷顯示子函數(shù)
void write_nl(uchar add,uchar dat)//向LCD寫時分秒,有顯示位置加、現(xiàn)示數(shù)據(jù)，兩個參數(shù)
{
uchar gw,sw;
//gw=dat%10;//取得個位數(shù)字
//sw=dat/10;//取得十位數(shù)字
gw=dat%16;//取得個位數(shù)字
sw=dat/16;//取得十位數(shù)字
write_1602com(er+add);//er是頭文件規(guī)定的值0x80+0x40
// write_1602dat(0x30+sw);//數(shù)字+30得到該數(shù)字的LCD1602顯示碼
// write_1602dat(0x30+gw);//數(shù)字+30得到該數(shù)字的LCD1602顯示碼
write_1602dat('0'+sw);//數(shù)字+30得到該數(shù)字的LCD1602顯示碼
write_1602dat('0'+gw);//數(shù)字+30得到該數(shù)字的LCD1602顯示碼
}
//-------------------------------------------
void write_week(uchar week)//寫星期函數(shù)
{
write_1602com(yh+0x0c);//星期字符的顯示位置
switch(week)
{
case 1:write_1602dat('M');//星期數(shù)為1時，顯示
write_1602dat('O');
write_1602dat('N');
break;
case 2:write_1602dat('T');//星期數(shù)據(jù)為2時顯示
write_1602dat('U');
write_1602dat('E');
break;
case 3:write_1602dat('W');//星期數(shù)據(jù)為3時顯示
write_1602dat('E');
write_1602dat('D');
break;
case 4:write_1602dat('T');//星期數(shù)據(jù)為4是顯示
write_1602dat('H');
write_1602dat('U');
break;
case 5:write_1602dat('F');//星期數(shù)據(jù)為5時顯示
write_1602dat('R');
write_1602dat('I');
break;
case 6:write_1602dat('S');//星期數(shù)據(jù)為6時顯示
write_1602dat('A');
write_1602dat('T');
break;
case 0:write_1602dat('S');//星期數(shù)據(jù)為7時顯示
write_1602dat('U');
write_1602dat('N');
break;
}
write_1602dat(' ');
}
//****************鍵盤掃描有關(guān)函數(shù)**********************
void keyscan()
{
if(ensure==0)
{
delay(9);
if(ensure==0)
{
buzzer=0;//蜂鳴器短響一次
delay(20);
buzzer=1;
led1=1; //背光滅
setn=0; //退出任何當前的設(shè)置
setNZn=0;
T_NL_NZ=0;
write_1602com(0x0c); //設(shè)置光標不閃爍
TR0=1; //打開定時器
temp=(miao)/10*16+(miao)%10;
write_1302(0x8e,0x00);//wp=0,可以進行時鐘和RAM寄存器的操作
write_1302(0x80,0x00|temp); //miao數(shù)據(jù)寫入DS1302
write_1302(0x8e,0x80);//禁止寫操作
}
}
if(menu==0)
{
delay(9);
if(menu==0)
{
led1=0;
bltime=0;
if((setn==0)&&(setNZn==0)) //在沒有進入調(diào)時模式時才可按動
{
buzzer=0;//蜂鳴器短響一次
delay(20);
buzzer=1;
if(TR1==1)
{
TR1=0;
}
else
{
T_NL_NZ++;
if(T_NL_NZ==2)//shm
{
setn=0;
setNZn=0;
T_NL_NZ=0;
}
}
}
while(menu==0);
}
}
if(set==0)//---------------set為功能鍵（設(shè)置鍵）--------------------
{
delay(9);//延時，用于消抖動
if(set==0)//延時后再次確認按鍵按下
{
led1=0;
bltime=0;
buzzer=0;//蜂鳴器短響一次
delay(20);
buzzer=1;
while(!set);
/*if(T_NL_NZ==0x02) //證明是對鬧鐘進行設(shè)置
{
setNZn++;
if(setNZn==4) //鬧鐘設(shè)定成功，退回到正常顯示并開啟鬧鐘
{
setNZn=0;
setn=0;
timerOn=1;
}
switch(setNZn)
{
case 0: //正常顯示日期時間
write_1602com(0x0c); //置光標不閃?
write_1602com(er); //時間顯示固定符號寫入位置?
for(a=0;a<16;a++)
write_1602dat(NZd[a]); //寫顯示時間固定符號，兩個冒號
write_sfm(8,nz_shi); //鬧鐘時
write_sfm(11,nz_fen); //鬧鐘分
write_sfm(14,nz_miao); //鬧鐘秒
break;
case 1: //鬧鐘秒光標閃爍
write_1602com(er+15); //設(shè)置按鍵按動一次，秒位置顯示光標 //er+0x09;
write_1602com(0x0f); //設(shè)置光標為閃爍
break;
case 2: //鬧鐘分光標閃爍
write_1602com(er+12); //設(shè)置按鍵按動一次，秒位置顯示光標 //er+0x09;
write_1602com(0x0f); //設(shè)置光標為閃爍
break;
case 3: //鬧鐘時光標閃爍
write_1602com(er+9); //設(shè)置按鍵按動一次，秒位置顯示光標 //er+0x09;
write_1602com(0x0f); //設(shè)置光標為閃爍
break;
}
}*///shm0411
//else //證明是對時間及日期進行設(shè)置
{
if(T_NL_NZ==0)
{
setn++;
if(setn==7)
setn=0; //設(shè)置按鍵共有秒、分、時、星期、日、月、年、返回，8個功能循環(huán)
switch(setn)
{
case 1: TR0=0;//關(guān)閉定時器
//TR1=0;
write_1602com(er+7);//設(shè)置按鍵按動一次，秒位置顯示光標 //er+0x09;
write_1602com(0x0f);//設(shè)置光標為閃爍
temp=(miao)/10*16+(miao)%10;//秒數(shù)據(jù)寫入DS1302
write_1302(0x8e,0x00);
write_1302(0x80,0x80|temp);//miao
write_1302(0x8e,0x80);
break;
case 2:
write_1602com(er+4); //按2次fen位置顯示光標 //er+0x06
//write_1602com(0x0f);
break;
case 3:
write_1602com(er+1); //按動3次，shi
//write_1602com(0x0f);
break;
// case 4: write_1602com(yh+0x0e);//按動4次，week
//write_1602com(0x0f);
// break;
case 4: write_1602com(yh+0x0a);//按動4次，ri
//write_1602com(0x0f);
break;
case 5: write_1602com(yh+0x07);//按動5次，yue
//write_1602com(0x0f);
break;
case 6: write_1602com(yh+0x04);//按動6次，nian
//write_1602com(0x0f);
break;
case 0:
write_1602com(0x0c);//按動到第7次，設(shè)置光標不閃爍
TR0=1;//打開定時器
temp=(miao)/10*16+(miao)%10;
write_1302(0x8e,0x00);
write_1302(0x80,0x00|temp);//miao數(shù)據(jù)寫入DS1302
write_1302(0x8e,0x80);
break;
}
}
}
}
}
//------------------------------加鍵add----------------------------
if((setn!=0)&&(setNZn==0))//當set按下以下。再按以下鍵才有效（按鍵次數(shù)不等于零）
{
if(add==0) //上調(diào)鍵
{
delay(10);
if(add==0)
{
led1=0;
bltime=0;
buzzer=0;//蜂鳴器短響一次
delay(20);
buzzer=1;
while(!add);
switch(setn)
{
case 1:miao++;//設(shè)置鍵按動1次，調(diào)秒
if(miao==60)
miao=0;//秒超過59，再加1，就歸零
write_sfm(0x06,miao);//令LCD在正確位置顯示"加"設(shè)定好的秒數(shù)
temp=(miao)/10*16+(miao)%10;//十進制轉(zhuǎn)換成DS1302要求的DCB碼
write_1302(0x8e,0x00); //允許寫，禁止寫保護
write_1302(0x80,temp); //向DS1302內(nèi)寫秒寄存器80H寫入調(diào)整后的秒數(shù)據(jù)BCD碼
write_1302(0x8e,0x80); //打開寫保護
write_1602com(er+7);//因為設(shè)置液晶的模式是寫入數(shù)據(jù)后，光標自動右移，所以要指定返回
//write_1602com(0x0b);
break;
case 2:fen++;
if(fen==60)
fen=0;
write_sfm(0x03,fen);//令LCD在正確位置顯示"加"設(shè)定好的分數(shù)據(jù)
temp=(fen)/10*16+(fen)%10;//十進制轉(zhuǎn)換成DS1302要求的DCB碼
write_1302(0x8e,0x00);//允許寫，禁止寫保護
write_1302(0x82,temp);//向DS1302內(nèi)寫分寄存器82H寫入調(diào)整后的分數(shù)據(jù)BCD碼
write_1302(0x8e,0x80);//打開寫保護
write_1602com(er+4);//因為設(shè)置液晶的模式是寫入數(shù)據(jù)后，指針自動加一，在這里是寫回原來的位置
break;
case 3:shi++;
if(shi==24)
shi=0;
write_sfm(0x00,shi);//令LCD在正確的位置顯示"加"設(shè)定好的小時數(shù)據(jù)
temp=(shi)/10*16+(shi)%10;//十進制轉(zhuǎn)換成DS1302要求的DCB碼
write_1302(0x8e,0x00);//允許寫，禁止寫保護
write_1302(0x84,temp);//向DS1302內(nèi)寫小時寄存器84H寫入調(diào)整后的小時數(shù)據(jù)BCD碼
write_1302(0x8e,0x80);//打開寫保護
write_1602com(er+1);//因為設(shè)置液晶的模式是寫入數(shù)據(jù)后，指針自動加一，所以需要光標回位
break;
/*
case 4:week++;
if(week==8)
week=1;
write_1602com(yh+0x0C);//指定'加'后的周數(shù)據(jù)顯示位置
write_week(week);//指定周數(shù)據(jù)顯示內(nèi)容
temp=(week)/10*16+(week)%10;//十進制轉(zhuǎn)換成DS1302要求的DCB碼
write_1302(0x8e,0x00);//允許寫，禁止寫保護
write_1302(0x8a,temp);//向DS1302內(nèi)寫周寄存器8aH寫入調(diào)整后的周數(shù)據(jù)BCD碼
write_1302(0x8e,0x80);//打開寫保護
write_1602com(yh+0x0e);//因為設(shè)置液晶的模式是寫入數(shù)據(jù)后，指針自動加一，所以需要光標回位
break;
*/
case 4:ri++;
if(ri==32)
ri=1;
Conver_week(nian,yue,ri);
write_week(week);
write_nyr(9,ri);//令LCD在正確的位置顯示"加"設(shè)定好的日期數(shù)據(jù)
temp=(ri)/10*16+(ri)%10;//十進制轉(zhuǎn)換成DS1302要求的DCB碼
write_1302(0x8e,0x00);//允許寫，禁止寫保護
write_1302(0x86,temp);//向DS1302內(nèi)寫日期寄存器86H寫入調(diào)整后的日期數(shù)據(jù)BCD碼
write_1302(0x8e,0x80);//打開寫保護
write_1602com(yh+10);//因為設(shè)置液晶的模式是寫入數(shù)據(jù)后，指針自動加一，所以需要光標回位
break;
case 5:yue++;
if(yue==13)
yue=1;
Conver_week(nian,yue,ri);
write_week(week);
write_nyr(6,yue);//令LCD在正確的位置顯示"加"設(shè)定好的月份數(shù)據(jù)
temp=(yue)/10*16+(yue)%10;//十進制轉(zhuǎn)換成DS1302要求的DCB碼
write_1302(0x8e,0x00);//允許寫，禁止寫保護
write_1302(0x88,temp);//向DS1302內(nèi)寫月份寄存器88H寫入調(diào)整后的月份數(shù)據(jù)BCD碼
write_1302(0x8e,0x80);//打開寫保護
write_1602com(yh+7);//因為設(shè)置液晶的模式是寫入數(shù)據(jù)后，指針自動加一，所以需要光標回位
break;
case 6:nian++;
if(nian==100)
nian=0;
Conver_week(nian,yue,ri);
write_week(week);
write_nyr(3,nian);//令LCD在正確的位置顯示"加"設(shè)定好的年份數(shù)據(jù)
temp=(nian)/10*16+(nian)%10;//十進制轉(zhuǎn)換成DS1302要求的DCB碼
write_1302(0x8e,0x00);//允許寫，禁止寫保護
write_1302(0x8c,temp);//向DS1302內(nèi)寫年份寄存器8cH寫入調(diào)整后的年份數(shù)據(jù)BCD碼
write_1302(0x8e,0x80);//打開寫保護
write_1602com(yh+4);//因為設(shè)置液晶的模式是寫入數(shù)據(jù)后，指針自動加一，所以需要光標回位
break;
}
}
}
//------------------減鍵dec，各句功能參照'加鍵'注釋---------------
if(dec==0)
{
delay(10);//調(diào)延時，消抖動
if(dec==0)
{
led1=0;
bltime=0;
buzzer=0;//蜂鳴器短響一次
delay(20);
buzzer=1;
while(!dec);
switch(setn)
{
case 1:
miao--;
if(miao==-1)
miao=59;//秒數(shù)據(jù)減到-1時自動變成59
write_sfm(0x06,miao);//在LCD的正確位置顯示改變后新的秒數(shù)
temp=(miao)/10*16+(miao)%10;//十進制轉(zhuǎn)換成DS1302要求的DCB碼
write_1302(0x8e,0x00); //允許寫，禁止寫保護
write_1302(0x80,temp); //向DS1302內(nèi)寫秒寄存器80H寫入調(diào)整后的秒數(shù)據(jù)BCD碼
write_1302(0x8e,0x80); //打開寫保護
write_1602com(er+7);//因為設(shè)置液晶的模式是寫入數(shù)據(jù)后，指針自動加一，在這里是寫回原來的位置
//write_1602com(0x0b);
break;
case 2:
fen--;
if(fen==-1)
fen=59;
write_sfm(3,fen);
temp=(fen)/10*16+(fen)%10;//十進制轉(zhuǎn)換成DS1302要求的DCB碼
write_1302(0x8e,0x00);//允許寫，禁止寫保護
write_1302(0x82,temp);//向DS1302內(nèi)寫分寄存器82H寫入調(diào)整后的分數(shù)據(jù)BCD碼
write_1302(0x8e,0x80);//打開寫保護
write_1602com(er+4);//因為設(shè)置液晶的模式是寫入數(shù)據(jù)后，指針自動加一，在這里是寫回原來的位置
break;
case 3:
shi--;
if(shi==-1)
shi=23;
write_sfm(0,shi);
temp=(shi)/10*16+(shi)%10;//十進制轉(zhuǎn)換成DS1302要求的DCB碼
write_1302(0x8e,0x00);//允許寫，禁止寫保護
write_1302(0x84,temp);//向DS1302內(nèi)寫小時寄存器84H寫入調(diào)整后的小時數(shù)據(jù)BCD碼
write_1302(0x8e,0x80);//打開寫保護
write_1602com(er+1);//因為設(shè)置液晶的模式是寫入數(shù)據(jù)后，指針自動加一，所以需要光標回位
break;
/*
case 4:week--;
if(week==0)
week=7;
write_1602com(yh+0x0C);//指定'加'后的周數(shù)據(jù)顯示位置
write_week(week);//指定周數(shù)據(jù)顯示內(nèi)容
temp=(week)/10*16+(week)%10;//十進制轉(zhuǎn)換成DS1302要求的DCB碼
write_1302(0x8e,0x00);//允許寫，禁止寫保護
write_1302(0x8a,temp);//向DS1302內(nèi)寫周寄存器8aH寫入調(diào)整后的周數(shù)據(jù)BCD碼
write_1302(0x8e,0x80);//打開寫保護
write_1602com(yh+0x0e);//因為設(shè)置液晶的模式是寫入數(shù)據(jù)后，指針自動加一，所以需要光標回位
break;
*/
case 4:
ri--;
if(ri==0)
ri=31;
Conver_week(nian,yue,ri);
write_week(week);
write_nyr(9,ri);
temp=(ri)/10*16+(ri)%10;//十進制轉(zhuǎn)換成DS1302要求的DCB碼
write_1302(0x8e,0x00);//允許寫，禁止寫保護
write_1302(0x86,temp);//向DS1302內(nèi)寫日期寄存器86H寫入調(diào)整后的日期數(shù)據(jù)BCD碼
write_1302(0x8e,0x80);//打開寫保護
write_1602com(yh+10);//因為設(shè)置液晶的模式是寫入數(shù)據(jù)后，指針自動加一，所以需要光標回位
break;
case 5:
yue--;
if(yue==0)
yue=12;
Conver_week(nian,yue,ri);
write_week(week);
write_nyr(6,yue);
temp=(yue)/10*16+(yue)%10;//十進制轉(zhuǎn)換成DS1302要求的DCB碼
write_1302(0x8e,0x00);//允許寫，禁止寫保護
write_1302(0x88,temp);//向DS1302內(nèi)寫月份寄存器88H寫入調(diào)整后的月份數(shù)據(jù)BCD碼
write_1302(0x8e,0x80);//打開寫保護
write_1602com(yh+7);//因為設(shè)置液晶的模式是寫入數(shù)據(jù)后，指針自動加一，所以需要光標回位
break;
case 6:
nian--;
if(nian==-1)
nian=99;
Conver_week(nian,yue,ri);
write_week(week);
write_nyr(3,nian);
temp=(nian)/10*16+(nian)%10;//十進制轉(zhuǎn)換成DS1302要求的DCB碼
write_1302(0x8e,0x00);//允許寫，禁止寫保護
write_1302(0x8c,temp);//向DS1302內(nèi)寫年份寄存器8cH寫入調(diào)整后的年份數(shù)據(jù)BCD碼
write_1302(0x8e,0x80);//打開寫保護
write_1602com(yh+4);//因為設(shè)置液晶的模式是寫入數(shù)據(jù)后，指針自動加一，所以需要光標回位
break;
}
}
}
}
if((setNZn!=0)&&(setn==0))
{
if(add==0) //上調(diào)鍵
{
delay(10);
if(add==0)
{
led1=0;
bltime=0;
buzzer=0;//蜂鳴器短響一次
delay(20);
buzzer=1;
while(!add);
switch(setNZn)
{
case 1:
nz_miao++; //設(shè)置鍵按動1次，調(diào)秒
if(nz_miao==60)
nz_miao=0;//秒超過59，再加1，就歸零
write_sfm(14,nz_miao);//令LCD在正確位置顯示"加"設(shè)定好的秒數(shù)
write_1602com(er+15);//因為設(shè)置液晶的模式是寫入數(shù)據(jù)后，光標自動右移，所以要指定返回
break;
case 2:
nz_fen++;
if(nz_fen==60)
nz_fen=0;
write_sfm(11,nz_fen);//令LCD在正確位置顯示"加"設(shè)定好的分數(shù)據(jù)
write_1602com(er+12);//因為設(shè)置液晶的模式是寫入數(shù)據(jù)后，指針自動加一，在這里是寫回原來的位置
break;
……………………
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