STC8H3K64S2单片机+OLED12832+DS3231+USB时间校准,18B20-小巧时钟时钟带温度显示
STC8H3K64S2单片机芯片+OLED12832+DS3231+USB时间校准，18B20---小巧时钟时钟所有资料在附件，欢迎学习交流！
先看制作出来的实物：
可以插手机充电器，也可以插电脑USB，也可以插tpye-c手机数据线进行供电及时间校准。校准用串口助手。
有温度，时间，日期，星期显示。特点是小巧，可视角度大。亮度高，可以在代码里设置时间关屏幕。
电路原理图：
PCB图：
部分单片机代码：
[*]#include "STC8xxxx.H"
[*]#include "oled.h"
[*]#include "bmp.h"
[*]#include "config.h"
[*]#include "gpio.h"
[*]#include "delay.h"
[*]#include<intrins.h>
[*]#include<stdlib.h>
[*]#define uchar unsigned char
[*]#define uint unsigned int
[*]/*实物端口定义*/
[*]sbit DQ=P3^7; //18b20
[*]sbit TSDA=P1^2; //ds32321 //模拟I2C数据传送位SDA
[*]sbit TSCL=P1^1; //模拟I2C时钟控制位SCL
[*]sbit SDA=P3^4; //OLED12832 //模拟I2C数据传送位SDA
[*]sbit SCL=P3^3; //模拟I2C时钟控制位SCL
[*]sbit bg=P3^2; //控制OLED打开与关闭；
[*]//***按键功能****//
[*]////***K1停止时间显示****//
[*]////***K2选择修改位置****//
[*]////***K3进行加1的修改****//
[*]////***K4将修改写入ds3231，同时启动时间显示****//
[*] sbit K1=P1^0;
[*] sbit K2=P1^6;
[*] sbit K3=P1^7;
[*] sbit K4=P5^4;
[*]/*开发板端口定义*/
[*]//sbit LCD_RS=P3^5;
[*]//sbit LCD_RW=P3^6;
[*]//sbit LCD_EN=P3^4;
[*]//sbit LCD_PSB=P2^3;
[*]//sbit DQ=P2^2; //18b20
[*]//sbit SDA=P1^0; //ds32321 //模拟I2C数据传送位SDA
[*]//sbit SCL=P1^1;
[*]//sbit bg=P2^4; //模拟I2C时钟控制位SCL
[*]////***按键功能****//
[*]//////***K1停止时间显示****//
[*]//////***K2选择修改位置****//
[*]//////***K3进行加1的修改****//
[*]//////***K4将修改写入ds3231，同时启动时间显示****//
[*]//sbit K1=P3^0;
[*]//sbit K2=P3^1;
[*]//sbit K3=P3^2;
[*]//sbit K4=P3^3;
[*]//定义变量
[*]uchar numbr="0123456789"; //字模
[*]uchar i=0;
[*]bit flag=0,flag1=0;//串口接收完成标志
[*]uchar dis4[]=" "; // 第四行显示 自己添加
[*]uchar t[]=". ℃" ; //18b20
[*]uintsdata,xiaoshu1,xiaoshu2; //整数、小数1位、小数2位
[*]bitfg=1; //温度正负标志
[*]uchar tempL=0,tempH=0; // 变量
[*]uchar year,month,date,hour,min,sec,day; // ds3231
[*]uchar a[]="2021.01.31";
[*]uchar b[]="16时20分00秒";
[*]uchar c[]="周一周二周三周四周五周六周日";
[*]uchar ndate,nmonth,nyear;
[*]uchar buffer={0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0};//设置数据串口接收缓存数组 7e开头0d结尾一共有15个字节
[*] /*农历、、、、*/
[*] struct SPDATE {//阴历结构体
[*] uchar year;//年
[*] uchar mon; //月
[*] uchar day; //日
[*]};
[*] struct SPDATE SpDate;//阴历
[*]/********阳历转换阴历表************************************/
[*]code uchar year_code={
[*] 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
[*]};
[*]///月份数据表
[*]code uchar day_code1={0x0,0x1f,0x3b,0x5a,0x78,0x97,0xb5,0xd4,0xf3};
[*]code uint day_code2={0x111,0x130,0x14e};
[*]/*
[*]函数功能:输入BCD阳历数据,输出BCD阴历数据(只允许1901-2099年)
[*]调用函数示例:Conversion(c_sun,year_sun,month_sun,day_sun)
[*]如:计算2004年10月16日Conversion(0,0x4,0x10,0x16);
[*]c_sun,year_sun,month_sun,day_sun均为BCD数据,c_sun为世纪标志位,c_sun=0为21世
[*]纪,c_sun=1为19世纪
[*]调用函数后,原有数据不变,读c_moon,year_moon,month_moon,day_moon得出阴历BCD数据
[*]*/
[*]bit c_moon;
[*]//子函数,用于读取数据表中农历月的大月或小月,如果该月为大返回1,为小返回0
[*]bit get_moon_day(uchar month_p,uint table_addr)
[*]{
[*] uchar temp10;
[*] switch (month_p){
[*] case 1:{temp10=year_code&0x08;
[*] if (temp10==0)return(0);else return(1);}
[*] case 2:{temp10=year_code&0x04;
[*] if (temp10==0)return(0);else return(1);}
[*] case 3:{temp10=year_code&0x02;
[*] if (temp10==0)return(0);else return(1);}
[*] case 4:{temp10=year_code&0x01;
[*] if (temp10==0)return(0);else return(1);}
[*] case 5:{temp10=year_code&0x80;
[*] if (temp10==0) return(0);else return(1);}
[*] case 6:{temp10=year_code&0x40;
[*] if (temp10==0)return(0);else return(1);}
[*] case 7:{temp10=year_code&0x20;
[*] if (temp10==0)return(0);else return(1);}
[*] case 8:{temp10=year_code&0x10;
[*] if (temp10==0)return(0);else return(1);}
[*] case 9:{temp10=year_code&0x08;
[*] if (temp10==0)return(0);else return(1);}
[*] case 10:{temp10=year_code&0x04;
[*] if (temp10==0)return(0);else return(1);}
[*] case 11:{temp10=year_code&0x02;
[*] if (temp10==0)return(0);else return(1);}
[*] case 12:{temp10=year_code&0x01;
[*] if (temp10==0)return(0);else return(1);}
[*] case 13:{temp10=year_code&0x80;
[*] if (temp10==0)return(0);else return(1);}
[*] default:return(2);
[*] }
[*]}
[*]/*
[*]函数功能:输入BCD阳历数据,输出BCD阴历数据(只允许1901-2099年)
[*]调用函数示例:Conversion(c_sun,year_sun,month_sun,day_sun)
[*]如:计算2004年10月16日Conversion(0,0x4,0x10,0x16);
[*]c_sun,year_sun,month_sun,day_sun均为BCD数据,c_sun为世纪标志位,c_sun=0为21世
[*]纪,c_sun=1为19世纪
[*]调用函数后,原有数据不变,读c_moon,year_moon,month_moon,day_moon得出阴历BCD数据
[*]*/
[*]void Conversion(bit c,uchar year,uchar month,uchar day)
[*]{ //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;
[*] bit flag2,flag_y;
[*] temp1=year/16; //BCD->hex 先把数据转换为十六进制
[*] 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;
[*] //定位数据表地址
[*] if(c==0){
[*] table_addr=(year+0x64-1)*0x3;
[*] }
[*] else {
[*] table_addr=(year-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&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&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,day_code2
[*] //如果公历月在九月或前,天数会少于0xff,用表day_code1,
[*] //在九月后,天数大于0xff,用表day_code2
[*] //如输入公历日为8月10日,则公历日离元旦天数为day_code1+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+10-1
[*] if (month<10){
[*] temp4=day_code1+day-1;
[*] }
[*] else{
[*] temp4=day_code2+day-1;
[*] }
[*] if ((month>0x2)&&(year%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;
[*] month=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&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(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{//公历日在春节前使用下面代码进行运算
[*] temp3-=temp4;
[*] if (year==0x0){year=0x63;c=1;}
[*] else year-=1;
[*] table_addr-=0x3;
[*] month=0xc;
[*] temp2=year_code&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)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 ,运算结束后,把数据转换为BCD数据
[*] temp1=year/10;
[*] temp1=_crol_(temp1,4);
[*] temp2=year%10;
[*] SpDate.year=temp1|temp2;
[*] temp1=month/10;
[*] temp1=_crol_(temp1,4);
[*] temp2=month%10;
[*] SpDate.mon=temp1|temp2;
[*] temp1=day/10;
[*] temp1=_crol_(temp1,4);
[*] temp2=day%10;
[*] SpDate.day=temp1|temp2;
[*]}
[*] ///函数
[*]//******************延时子程序 *******************************
[*]
[*]//这个延时程序的具体延时时间是time=i*8+10,适用于小于2ms的延时
[*]
[*]//************************************************************
[*]void delay(unsigned int i)
[*]{
[*]for(i;i>0;i--);
[*]}
[*]//***********************************************************
[*]// 延时子程序
[*]//************************************************************
[*]void delay1ms(uint j)
[*]{
[*]while(j!=0)
[*]{uchar i;
[*]for(i=124;i>0;i--);//延时124*8+10=1002us
[*]j--;
[*]}
[*]}
[*]void Delayxms(uint ms) //@33.1776MHz 1ms
[*]{
[*] unsigned char i, j;
[*]
[*] while(ms--)
[*] {
[*] unsigned char i, j;
[*] _nop_();
[*] _nop_();
[*] i = 44;
[*] j = 19;
[*] do
[*] {
[*] while (--j);
[*] } while (--i);
[*] }
[*]}
[*]/***************************************************************/
[*]/**********************************18b20************************************************/
[*]/**********************************18b20************************************************/
[*]void Init_DS18B20(void) //初始化
[*]{
[*]uchar x=0;
[*] EA = 0;
[*]DQ=1; //DQ先置高
[*]delay(80); //稍延时
[*]DQ=0; //发送复位脉冲
[*]delay(2000); //延时（>480us)
[*]DQ=1; //拉高数据线
[*]delay(100); //等待（15~60us)
[*]x=DQ; //用X的值来判断初始化有没有成功，18B20存在的话X=0，否则X=1
[*]delay(400);
[*] EA = 1;
[*]}
[*]//**********读一个字节************//
[*]ReadOneChar(void)//主机数据线先从高拉至低电平1us以上，再使数据线升为高电平，从而产生读信号
[*]{
[*]unsigned char i=0; //每个读周期最短的持续时间为60us，各个读周期之间必须有1us以上的高电平恢复期
[*]unsigned char dat=0;
[*] EA = 0;
[*]for (i=8;i>0;i--) //一个字节有8位
[*]{
[*]DQ=1;
[*]delay(30);
[*]DQ=0;
[*]dat>>=1;
[*]delay(3); //涉及单片机频率
[*]DQ=1;
[*]delay(1); //读取时间没那么快，经验，33mhz的1t单片机都需要调整时序
[*]if(DQ)
[*]dat|=0x80;
[*]delay(120);
[*]} EA = 1;
[*]return(dat);
[*]}
[*]//*********************** **写一个字节**************************//
[*]void WriteOneChar(unsigned char dat)
[*]{
[*]unsigned char i=0; //数据线从高电平拉至低电平，产生写起始信号。15us之内将所需写的位送到数据线上，
[*] EA = 0;
[*]for(i=8;i>0;i--) //在15~60us之间对数据线进行采样，如果是高电平就写1，低写0发生。
[*]{
[*] DQ=0; //在开始另一个写周期前必须有1us以上的高电平恢复期。
[*] delay(3);//涉及单片机频率
[*] DQ=dat&0x01;
[*] delay(190);
[*] DQ=1;
[*] dat>>=1; delay(1);
[*]} EA = 1;
[*]delay(40);
[*]}
[*]void ReadTemperature(void) //读温度值（低位放tempL;高位放tempH;）//
[*] {
[*] Init_DS18B20(); //初始化
[*] WriteOneChar(0xcc); //跳过读序列号的操作
[*] WriteOneChar(0x44); //启动温度转换
[*] delay(2000); //转换需要一点时间，延时
[*] Init_DS18B20(); //初始化
[*] WriteOneChar(0xcc); //跳过读序列号的操作
[*] WriteOneChar(0xbe); //读温度寄存器（头两个值分别为温度的低位和高位）
[*] tempL=ReadOneChar(); //读出温度的低位LSB
[*] tempH=ReadOneChar(); //读出温度的高位MSB
[*]
[*] if(tempH>0x7f) //最高位为1时温度是负
[*] {
[*] tempL=~tempL; //补码转换，取反加一
[*] tempH=~tempH+1;
[*] fg=0; //读取温度为负时fg=0
[*] }
[*] sdata = tempL/16+tempH*16; //整数部分
[*] xiaoshu1 = (tempL&0x0f)*10/16; //小数第一位
[*] xiaoshu2 = (tempL&0x0f)*100/16%10;//小数第二位
[*] }
[*]/*****************************************ds3231********************************************/
[*]#define ADDRTW 0xD0 //器件写地址
[*]#define ADDRTD 0xD1 //器件读地址
[*]#define DS3231_SEC 0x00 //秒
[*]#define DS3231_MIN 0x01 //分
[*]#define DS3231_HOUR 0x02 //时
[*]#define DS3231_DAY 0x03 //星期
[*]#define DS3231_DATE 0x04 //日
[*]#define DS3231_MONTH 0x05 //月
[*]#define DS3231_YEAR 0x06 //年
[*]//闹铃1
[*]#define DS3231_Al1SEC 0x07 //秒
[*]#define DS3231_AL1MIN 0x08 //分
[*]#define DS3231_AL1HOUR0x09 //时
[*]#define DS3231_AL1DAY 0x0A //星期/日
[*]//闹铃2
[*]#define DS3231_AL2MIN 0x0b //分
[*]#define DS3231_AL2HOUR0x0c //时
[*]#define DS3231_AL2DAY 0x0d //星期/日
[*]#define DS3231_CONTROL0x0e //控制寄存器
[*]#define DS3231_STATUS 0x0f //状态寄存器
[*]bit ack;
[*]uchar BCD2HEX(uchar val) //BCD转换为Byte
[*]{ uchar i;
[*] i= val&0x0f;
[*] val >>= 4;
[*] val &= 0x0f;
[*] val *= 10;
[*] i += val;
[*] return i;
[*]}
[*]uchar HEX2BCD(uchar val)//B码转换为BCD码
[*] {
[*] uchar i,j,k;
[*] i=val/10;
[*] j=val%10;
[*] k=j+(i<<4);
[*] return k;
[*] }
[*]void Start()
[*]{
[*] TSDA=1; //发送起始条件的数据信号
[*] delay(1);
[*] TSCL=1;
[*] delay(5); //起始条件建立时间大于4.7us,延时
[*] TSDA=0; //发送起始信号
[*] delay(5); // 起始条件锁定时间大于4μs
[*] TSCL=0; //钳住I2C总线，准备发送或接收数据
[*] delay(2);
[*]}
[*]void Stop()
[*]{
[*] TSDA=0; //发送结束条件的数据信号
[*] delay(1); //发送结束条件的时钟信号
[*] TSCL=1; //结束条件建立时间大于4us
[*] delay(5);
[*] TSDA=1; //发送I2C总线结束信号
[*] delay(4);
[*]}
[*]/********************************************************/
[*]/*******************************************************************
[*] 字节数据发送函数
[*]函数原型: void SendByte(uchar Dat);
[*]功能: 将数据c发送出去,可以是地址,也可以是数据,发完后等待应答,并对
[*] 此状态位进行操作.(不应答或非应答都使ack=0)
[*] ack=1 发送数据正常，
[*] ack=0 被控器无应答或损坏。
[*]********************************************************************/
[*]void SendByte(uchar Dat)
[*]{
[*]uchar BitCnt;
[*] for(BitCnt=0;BitCnt<8;BitCnt++) //要传送的数据长度为8位
[*] {
[*] if((Dat<<BitCnt)&0x80)
[*] TSDA=1; //判断发送位
[*] else
[*] TSDA=0;
[*] delay(1);
[*] TSCL=1; //置时钟线为高，通知被控器开始接收数据位
[*] delay(5); //保证时钟高电平周期大于4μs
[*] TSCL=0;
[*] }
[*] delay(2);
[*] TSDA=1; //8位发送完后释放数据线，准备接收应答位
[*] delay(2);
[*] TSCL=1;
[*] delay(3);
[*] if(TSDA==1)
[*] ack=0;
[*] else
[*] ack=1; //判断是否接收到应答信号
[*] TSCL=0;
[*] delay(2);
[*]}
[*]uchar RcvByte() // 功能: 用来接收从器件传来的数据,并判断总线错误(不发应答信号)，发完后请用应答函数应答从机。
[*]{
[*]uchar retc;
[*]uchar BitCnt;
[*] retc=0;
[*] TSDA=1; //置数据线为输入方式
[*] for(BitCnt=0;BitCnt<8;BitCnt++)
[*] {
[*] delay(1);
[*] TSCL=0; //置时钟线为低，准备接收数据位
[*] delay(5); //时钟低电平周期大于4.7μs
[*] TSCL=1; //置时钟线为高使数据线上数据有效
[*] delay(3);
[*] retc=retc<<1;
[*] if(TSDA==1)
[*] retc=retc+1; //读数据位,接收的数据位放入retc中
[*] delay(2);
[*] }
[*] TSCL=0;
[*] delay(2);
[*] return(retc);
[*]}
[*]void I2CACK(bit a) // 功能: 主控器进行应答信号(可以是应答或非应答信号，由位参数a决定)
[*]{
[*] if(a==0)
[*] TSDA=0; //在此发出应答或非应答信号
[*] else
[*] TSDA=1;
[*] delay(3);
[*] TSCL=1;
[*] delay(5); //时钟低电平周期大于4μs
[*] TSCL=0; //清时钟线，钳住I2C总线以便继续接收
[*] delay(2);
[*]}
[*]uchar I2CRead() /************从DS3231当前地址读一个字节************/
[*]{
[*]uchar read_data;
[*] Start();
[*] SendByte(ADDRTD);
[*] if(ack==0)
[*] {
[*]return(0);
[*] }
[*] read_data = RcvByte();
[*] I2CACK(1);
[*] Stop();
[*] return read_data;
[*]}
[*]uchar I2CReadAdd(uchar addr) /************从DS3231指定地址读一个字节************/
[*] {
[*] Start();
[*] SendByte(ADDRTW);
[*] if(ack==0)
[*] {
[*] return(0);
[*] }
[*] SendByte(addr);
[*] if(ack==0)
[*] {
[*] return(0);
[*] }
[*] return(I2CRead());
[*] }
[*]void Readtime() /*********************读取时间**********************/
[*] {
[*] uchar temp;
[*] temp=I2CReadAdd(DS3231_SEC);//秒
[*] sec=BCD2HEX(temp);
[*]
[*] temp=I2CReadAdd(DS3231_MIN);//分
[*] min=BCD2HEX(temp);
[*]
[*] temp=I2CReadAdd(DS3231_HOUR);//时
[*] hour=BCD2HEX(temp);
[*]
[*] temp=I2CReadAdd(DS3231_DATE);//日
[*] date=BCD2HEX(temp);
[*]
[*] temp=I2CReadAdd(DS3231_MONTH); //月
[*] month=BCD2HEX(temp);
[*]
[*] temp=I2CReadAdd(DS3231_YEAR);//年
[*] year=BCD2HEX(temp);
[*] temp=I2CReadAdd(DS3231_DAY);
[*] day=BCD2HEX(temp);//星期
[*] }
[*] void Readtimenongli() /*********************读取时间为了阳历转农历**********************/
[*] {
[*] ndate=I2CReadAdd(DS3231_DATE);//日
[*] // date=BCD2HEX(temp);
[*]
[*] nmonth=I2CReadAdd(DS3231_MONTH); //月
[*] //month=BCD2HEX(temp);
[*]
[*] nyear=I2CReadAdd(DS3231_YEAR);//年
[*] }
[*]void InitDS3231() //ds3231初始化
[*] { TSCL=1;
[*] delay(5);
[*] TSDA=1;
[*] delay(5);
[*] }
[*]void TimeDisplay(uchar Dhour,uchar Dmin,uchar Dsec) //时分秒数组赋值
[*] { b=(hour / 10)+'0'; // 时十位
[*] b=numbr; // 时个位
[*] b=numbr; // 分十位
[*] b=numbr; // 分个位
[*] b=numbr; // 秒十位
[*] b=numbr; // 秒个位
[*] }
[*]void DateDisplay(uchar Dyear,uchar Dmonth,uchar Dday) //年月天数组赋值
[*] { a=numbr; // 年十位
[*] a=numbr; // 年个位
[*] a=numbr; // 月十位
[*] a=numbr; // 月个位
[*] a=numbr; // 天十位
[*] a=numbr; // 天个位
[*] }
[*]void Start_I2C()
[*]{
[*] TSDA=1; //发送起始条件的数据信号
[*] delay(1);
[*] TSCL=1;
[*] delay(5); //起始条件建立时间大于4.7us,延时
[*] TSDA=0; //发送起始信号
[*] delay(5); // 起始条件锁定时间大于4μs
[*] TSCL=0; //钳住I2C总线，准备发送或接收数据
[*] delay(2);
[*]}
[*]void Stop_I2C()
[*]{
[*] TSDA=0; //发送结束条件的数据信号
[*] delay(1); //发送结束条件的时钟信号
[*] TSCL=1; //结束条件建立时间大于4us
[*] delay(5);
[*] TSDA=1; //发送I2C总线结束信号
[*] delay(4);
[*]}
[*]uchar write_byte(uchar addr, uchar write_data)
[*]{
[*] Start_I2C();
[*] SendByte(ADDRTW); //////*******************************************************************///////////
[*] if (ack == 0)
[*] return 0;
[*] SendByte(addr);
[*] if (ack == 0)
[*] return 0;
[*] SendByte(write_data);
[*] if (ack == 0)
[*] return 0;
[*] Stop_I2C();
[*] delay1ms(10);
[*] return 1;
[*]}
[*]void ModifyTime(uchar yea,uchar mon,uchar da,uchar hou,uchar min,uchar sec,uchar w) //函数功能：修改时间、日期和星期
[*]{ uchar temp=0;
[*]
[*] temp=HEX2BCD(yea);
[*] write_byte(DS3231_YEAR,temp); //修改年
[*]
[*] temp=HEX2BCD(mon);
[*] write_byte(DS3231_MONTH,temp);//修改月
[*]
[*] temp=HEX2BCD(da); /////////////////////
[*] write_byte(DS3231_DATE,temp); //修改日
[*]
[*] temp=HEX2BCD(hou);
[*] write_byte(DS3231_HOUR,temp); //修改时
[*]
[*] temp=HEX2BCD(min);
[*] write_byte(DS3231_MIN,temp); //修改分
[*]
[*] temp=HEX2BCD(sec);
[*] write_byte(DS3231_SEC,temp); //修改秒
[*] temp=HEX2BCD(w);
[*] write_byte(DS3231_DAY,temp);//修改星期
[*]}
[*]void nongli()
[*] {
[*] uchar SetDatyue,SetDat;
[*] Readtimenongli();
[*] Conversion(0,nyear,nmonth,ndate);
[*] SetDatyue = BCD2HEX(SpDate.mon);
[*]// if (SetDatyue==1){LCD1602_Dis_Str(3, 0, "正");}
[*]// if (SetDatyue==2){LCD1602_Dis_Str(3, 0, "二");}
[*]// if (SetDatyue==3){LCD1602_Dis_Str(3, 0, "三");}
[*]// if (SetDatyue==4){LCD1602_Dis_Str(3, 0, "四");}
[*]// if (SetDatyue==5){LCD1602_Dis_Str(3, 0, "五");}
[*]// if (SetDatyue==6){LCD1602_Dis_Str(3, 0, "六");}
[*]// if (SetDatyue==7){LCD1602_Dis_Str(3, 0, "七");}
[*]// if (SetDatyue==8){LCD1602_Dis_Str(3, 0, "八");}
[*]// if (SetDatyue==9){LCD1602_Dis_Str(3, 0, "九");}
[*]// if (SetDatyue==10){LCD1602_Dis_Str(3, 0, "十");}
[*]// if (SetDatyue==11){LCD1602_Dis_Str(3, 0, "冬");}
[*]// if (SetDatyue==12){LCD1602_Dis_Str(3, 0, "腊");}
[*]// LCD1602_Dis_Str(3, 1, "月");
[*]// SetDat = BCD2HEX(SpDate.day);
[*]// if (SetDat==1){LCD1602_Dis_Str(3, 2, "初一");}
[*]// if (SetDat==2){LCD1602_Dis_Str(3, 2, "初二");}
[*]// if (SetDat==3){LCD1602_Dis_Str(3, 2, "初三");}
[*]// if (SetDat==4){LCD1602_Dis_Str(3, 2, "初四");}
[*]// if (SetDat==5){LCD1602_Dis_Str(3, 2, "初五");}
[*]// if (SetDat==6){LCD1602_Dis_Str(3, 2, "初六");}
[*]// if (SetDat==7){LCD1602_Dis_Str(3, 2, "初七");}
[*]// if (SetDat==8){LCD1602_Dis_Str(3, 2, "初八");}
[*]// if (SetDat==9){LCD1602_Dis_Str(3, 2, "初九");}
[*]// if (SetDat==10){LCD1602_Dis_Str(3, 2, "初十");}
[*]// if (SetDat==11){LCD1602_Dis_Str(3, 2, "十一");}
[*]// if (SetDat==12){LCD1602_Dis_Str(3, 2, "十二");}
[*]// if (SetDat==13){LCD1602_Dis_Str(3, 2, "十三");}
[*]// if (SetDat==14){LCD1602_Dis_Str(3, 2, "十四");}
[*]// if (SetDat==15){LCD1602_Dis_Str(3, 2, "十五");}
[*]// if (SetDat==16){LCD1602_Dis_Str(3, 2, "十六");}
[*]// if (SetDat==17){LCD1602_Dis_Str(3, 2, "十七");}
[*]// if (SetDat==18){LCD1602_Dis_Str(3, 2, "十八");}
[*]// if (SetDat==19){LCD1602_Dis_Str(3, 2, "十九");}
[*]// if (SetDat==20){LCD1602_Dis_Str(3, 2, "二十");}
[*]// if (SetDat==21){LCD1602_Dis_Str(3, 2, "廿一");}
[*]// if (SetDat==22){LCD1602_Dis_Str(3, 2, "廿二");}
[*]// if (SetDat==23){LCD1602_Dis_Str(3, 2, "廿三");}
[*]// if (SetDat==24){LCD1602_Dis_Str(3, 2, "廿四");}
[*]// if (SetDat==25){LCD1602_Dis_Str(3, 2, "廿五");}
[*]// if (SetDat==26){LCD1602_Dis_Str(3, 2, "廿六");}
[*]// if (SetDat==27){LCD1602_Dis_Str(3, 2, "廿七");}
[*]// if (SetDat==28){LCD1602_Dis_Str(3, 2, "廿八");}
[*]// if (SetDat==29){LCD1602_Dis_Str(3, 2, "廿九");}
[*]// if (SetDat==30){LCD1602_Dis_Str(3, 2, "三十");}
[*] //显示到液晶上
[*]}
[*]void xianshi(void)
[*] {
[*] OLED_ShowNum(48,0,hour,2,32); //显示时
[*] if(sec%2==1) {OLED_ShowString(80,0,":",32);}
[*] if(sec%2==0) {OLED_ShowString(80,0," ",32);}
[*] OLED_ShowNum(96,0,min/10,1,32); //显示分
[*] OLED_ShowNum(112,0,min%10,1,32); //显示分 // OLED_ShowNum(97,0,sec,2,32);
[*] /*显示星期*/
[*] OLED_ShowString(0,2,"W",16);
[*] OLED_ShowNum(10,2,day,1,16);
[*] OLED_ShowString(0,0,"D",16);
[*] OLED_ShowNum(8,0,month,2,16); //显示月
[*] OLED_ShowString(24,0,".",16);
[*] OLED_ShowNum(32,0,date/10,1,16);
[*] OLED_ShowNum(40,0,date%10,1,16); //显示日
[*] ReadTemperature(); //显示温度
[*] OLED_ShowString(22,2,"T",16);
[*] OLED_ShowNum(32,2,sdata,2,16);
[*] }
[*]void shuaxin(void)
[*] {
[*] OLED_ShowNum(48,0,hour,2,32); //显示时
[*] if(sec%2==1) {OLED_ShowString(80,0,":",32);}
[*] if(sec%2==0) {OLED_ShowString(80,0," ",32);}
[*] OLED_ShowNum(96,0,min/10,1,32); //显示分
[*] OLED_ShowNum(112,0,min%10,1,32); //显示分 // OLED_ShowNum(97,0,sec,2,32);
[*] /*显示星期*/
[*] OLED_ShowString(0,2,"W",16);
[*] OLED_ShowNum(10,2,day,1,16);
[*] OLED_ShowString(0,0,"D",16);
[*] OLED_ShowNum(8,0,month,2,16); //显示月
[*] OLED_ShowString(24,0,".",16);
[*] OLED_ShowNum(32,0,date/10,1,16);
[*] OLED_ShowNum(40,0,date%10,1,16); //显示日
[*] ReadTemperature(); //显示温度
[*] OLED_ShowString(22,2,"T",16);
[*] OLED_ShowNum(32,2,sdata,2,16);
[*] }
[*]void xiugai() //设置时间
[*]{
[*] if(flag==1&&flag1==1)
[*] {ES=0;
[*] flag=0;
[*] flag1=0;
[*] year=(buffer-0x30)*10+(buffer-0x30);
[*] month=(buffer-0x30)*10+(buffer-0x30);
[*] date=(buffer-0x30)*10+(buffer-0x30);
[*] hour=(buffer-0x30)*10+(buffer-0x30);
[*] min=(buffer-0x30)*10+(buffer-0x30);
[*] sec=(buffer-0x30)*10+(buffer-0x30);
[*] day=(buffer-0x30);
[*] ModifyTime(year,month,date,hour,min,sec,day);
[*] ES=1;
[*] flag=0;
[*] flag1=0;
[*] }
[*] else
[*] {
[*] // Get_Current1();
[*] Readtime();
[*]// nongli();
[*] xianshi();
[*] shuaxin();
[*] flag=0;
[*] flag1=0;
[*] }
[*]}
[*]/*串口 函数*/
[*]void UartInit(void) //9600bps@33.1776MHz
[*]{
[*] SCON = 0x50; //8位数据,可变波特率
[*] AUXR |= 0x01; //串口1选择定时器2为波特率发生器
[*] AUXR &= 0xFB; //定时器时钟12T模式
[*] T2L = 0xB8; //设置定时初始值
[*] T2H = 0xFF; //设置定时初始值
[*] AUXR |= 0x10; //定时器2开始计时
[*] EA=1; //打开总中断
[*] ES=1; //打开接收中断
[*]}
[*]main() /*主程序*/
[*]{
[*] bg=0;
[*] P3M1 = 0x00;
[*] P3M0 = 0x00;
[*] P1M1 = 0x00;
[*] P1M0 = 0x00;
[*] UartInit();
[*] InitDS3231();
[*] OLED_Init();//初始化OLED
[*] OLED_ColorTurn(0);//0正常显示，1 反色显示
[*] OLED_DisplayTurn(0);//0正常显示 1 屏幕翻转显示
[*] OLED_Clear();
[*] // OLED_ShowString(0,0,"12:12:12",32);
[*] // ModifyTime(23,12,7,12,34,56,4) ;
[*] while(1)
[*] {
[*] Delayxms(200);
[*] xiugai();
[*] Delayxms(200);
[*]}}
[*]void Uart() interrupt 4 using 1 //串口1中断处理
[*]{
[*] buffer=SBUF;
[*] if(buffer==0x7E) //接收的报文以#开头（即0x7E）
[*] { flag1=1; //进入设置界面
[*] i=0;
[*] buffer=SBUF; //开始接收
[*] }
[*] RI=0;
[*] i++;
[*] if(buffer==0x21) //接收的报文以!结尾（即0x21）
[*] {
[*] i=0;
[*] flag=1;
[*] }
[*]}
json文件:
代码：
建议尽量用带 USB 的 STC8H8K64U / STC32G12K128 来 DIY 屏幕大点就好了 DS3231已经很准了，基本不用校时了 屏幕太小了… 学习一下 {:4_250:} {:4_167:}这个有价值!
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