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STC89C51-Perpetual-Calendar/Keil Code/Revise_3/main.c
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#include<reg51.h>
#include<intrins.h>
#include"lcd.h"
#include"ds1302.h"
#include"ds18b20.h"
/* 按键引脚定义 */
sbit K1=P3^1; /* 模式/确认键 */
sbit K2=P3^0; /* 切换/返回键 */
sbit K3=P3^2; /* 加/开始暂停键 */
sbit K4=P3^3; /* 减/复位键 */
sbit Buzzer=P2^0; /* 蜂鸣器引脚 */
/* 函数声明 */
void Delay10ms(void);
void LcdFramework(void);
void LcdUpdate(void);
void TempPros(void);
void KeyScan(void);
void SetAlarm(void);
void AlarmJudge(void);
void AlarmBuzPro(void);
void Timer1Init(void);
void KeySound(void);
void ReturnSound(void);
void DelayMs(unsigned int ms);
/* 全局变量 */
unsigned char mode = 0; /* 模式: 0=时钟, 2=秒表 */
unsigned char last_mode = 0xFF; /* 上一次模式，用于检测模式切换 */
int temperature = 0; /* 温度值（10倍） */
unsigned char temp_cnt = 0; /* 温度采集计数 */
/* 闹钟参数 */
unsigned char alarm_hour = 6; /* 闹钟小时 */
unsigned char alarm_min = 0; /* 闹钟分钟 */
unsigned char alarm_on = 0; /* 闹钟开关 */
unsigned char alarm_buz = 0; /* 闹钟蜂鸣标志 */
unsigned char alarm_buz_cnt = 0; /* 闹钟蜂鸣计数 */
/* 秒表参数 */
unsigned int sw_sec = 0; /* 秒表秒数 */
unsigned char sw_csec = 0; /* 秒表百分秒 */
bit sw_running = 0; /* 秒表运行状态 */
void main()
{
Timer1Init(); /* 初始化定时器1 */
LcdInit(); /* 初始化LCD1602 */
/* 开机蜂鸣器响一声 */
Buzzer = 0;
Delay10ms();Delay10ms();Delay10ms();Delay10ms();Delay10ms();
Delay10ms();Delay10ms();Delay10ms();Delay10ms();Delay10ms();
Buzzer = 1;
Ds1302Init(); /* 初始化DS1302 */
DS18B20_SetResolution(0x3F); /* 设置DS18B20分辨率10位 */
DS18B20_StartConvert(); /* 启动温度转换 */
/* 从DS1302 RAM读取闹钟参数 */
alarm_hour = Ds1302Read(0xC1);
if(alarm_hour > 23) alarm_hour = 6;
alarm_min = Ds1302Read(0xC3);
if(alarm_min > 59) alarm_min = 0;
alarm_on = Ds1302Read(0xC5);
if(alarm_on > 1) alarm_on = 0;
/* 主循环 */
while(1)
{
Ds1302ReadTime(); /* 读取DS1302时间 */
/* 每5个循环采集一次温度 */
temp_cnt++;
if(temp_cnt >= 5)
{
temp_cnt = 0;
TempPros();
}
/* 模式切换时刷新LCD框架 */
if(mode != last_mode)
{
LcdFramework();
last_mode = mode;
}
AlarmJudge(); /* 闹钟判断 */
AlarmBuzPro(); /* 闹钟蜂鸣处理 */
KeyScan(); /* 按键扫描 */
LcdUpdate(); /* LCD显示更新 */
}
}
/* 在LCD上显示两位数字 */
void ShowLcdNum(unsigned char num)
{
LcdWriteData('0' + num / 10); /* 十位 */
LcdWriteData('0' + num % 10); /* 个位 */
}
/* 在LCD上显示星期（英文缩写） */
void ShowLcdWeek(unsigned char week)
{
switch(week)
{
case 1: LcdWriteData('S'); LcdWriteData('u'); LcdWriteData('n'); break; /* Sunday */
case 2: LcdWriteData('M'); LcdWriteData('o'); LcdWriteData('n'); break; /* Monday */
case 3: LcdWriteData('T'); LcdWriteData('u'); LcdWriteData('e'); break; /* Tuesday */
case 4: LcdWriteData('W'); LcdWriteData('e'); LcdWriteData('d'); break; /* Wednesday */
case 5: LcdWriteData('T'); LcdWriteData('h'); LcdWriteData('u'); break; /* Thursday */
case 6: LcdWriteData('F'); LcdWriteData('r'); LcdWriteData('i'); break; /* Friday */
case 7: LcdWriteData('S'); LcdWriteData('a'); LcdWriteData('t'); break; /* Saturday */
}
}
/* LCD界面框架绘制 */
void LcdFramework()
{
if(mode == 0) /* 时钟模式界面 */
{
LcdWriteCom(0x0c); /* 不显示光标 */
/* 第一行：20 - - */
LcdWriteCom(0x80);
LcdWriteData('2'); LcdWriteData('0');
LcdWriteData(' '); LcdWriteData(' ');
LcdWriteData('-');
LcdWriteData(' '); LcdWriteData(' ');
LcdWriteData('-');
LcdWriteData(' '); LcdWriteData(' ');
LcdWriteData(' '); LcdWriteData(' ');
LcdWriteData(' '); LcdWriteData(' ');
LcdWriteData(' '); LcdWriteData(' ');
/* 第二行： : : 温度 */
LcdWriteCom(0x80+0x40);
LcdWriteData(' '); LcdWriteData(' ');
LcdWriteData(':');
LcdWriteData(' '); LcdWriteData(' ');
LcdWriteData(':');
LcdWriteData(' '); LcdWriteData(' ');
LcdWriteData(' '); LcdWriteData(' ');
LcdWriteData(' '); LcdWriteData(' ');
LcdWriteData(' '); LcdWriteData(' ');
LcdWriteData(' '); LcdWriteData(' ');
LcdWriteData(' '); LcdWriteData(' ');
}
else if(mode == 2) /* 秒表模式界面 */
{
LcdWriteCom(0x0c); /* 不显示光标 */
/* 第一行：显示 Stop Watch 标题 */
LcdWriteCom(0x80);
LcdWriteData(' '); LcdWriteData(' '); LcdWriteData(' ');
LcdWriteData('S'); LcdWriteData('t'); LcdWriteData('o');
LcdWriteData('p'); LcdWriteData(' ');
LcdWriteData('W'); LcdWriteData('a'); LcdWriteData('t');
LcdWriteData('c'); LcdWriteData('h');
LcdWriteData(' '); LcdWriteData(' '); LcdWriteData(' ');
/* 第二行： : : . */
LcdWriteCom(0x80+0x40);
LcdWriteData(' '); LcdWriteData(' ');
LcdWriteData(':'); LcdWriteData(' ');
LcdWriteData(' '); LcdWriteData(':');
LcdWriteData(' '); LcdWriteData(' ');
LcdWriteData('.');
LcdWriteData(' '); LcdWriteData(' ');
LcdWriteData(' '); LcdWriteData(' ');
LcdWriteData(' '); LcdWriteData(' '); LcdWriteData(' '); LcdWriteData(' ');
}
}
/* LCD显示数据更新 */
void LcdUpdate()
{
unsigned char t;
int temp_disp;
if(mode == 0) /* 时钟模式 */
{
/* 显示年（BCD码转十进制） */
LcdWriteCom(0x82);
ShowLcdNum((TIME[6]>>4)*10 + (TIME[6]&0x0f));
/* 显示月 */
LcdWriteCom(0x85);
ShowLcdNum((TIME[4]>>4)*10 + (TIME[4]&0x0f));
/* 显示日 */
LcdWriteCom(0x88);
ShowLcdNum((TIME[3]>>4)*10 + (TIME[3]&0x0f));
/* 显示星期 */
LcdWriteCom(0x8C);
ShowLcdWeek(TIME[5] & 0x07);
/* 显示时 */
LcdWriteCom(0xC0);
ShowLcdNum((TIME[2]>>4)*10 + (TIME[2]&0x0f));
/* 显示分 */
LcdWriteCom(0xC3);
ShowLcdNum((TIME[1]>>4)*10 + (TIME[1]&0x0f));
/* 显示秒 */
LcdWriteCom(0xC6);
ShowLcdNum((TIME[0]>>4)*10 + (TIME[0]&0x0f));
/* 显示温度，如 -12.3C */
LcdWriteCom(0xC9);
temp_disp = temperature;
if(temp_disp < 0) { LcdWriteData('-'); temp_disp = -temp_disp; }
else { LcdWriteData(' '); }
LcdWriteData('0' + temp_disp / 100);
LcdWriteData('0' + (temp_disp / 10) % 10);
LcdWriteData('.');
LcdWriteData('0' + temp_disp % 10);
LcdWriteData('C');
}
else if(mode == 2) /* 秒表模式 */
{
/* 显示时 */
t = sw_sec / 3600;
LcdWriteCom(0xC0);
LcdWriteData('0' + t / 10);
LcdWriteData('0' + t % 10);
/* 显示分 */
LcdWriteCom(0xC3);
t = (sw_sec % 3600) / 60;
LcdWriteData('0' + t / 10);
LcdWriteData('0' + t % 10);
/* 显示秒 */
LcdWriteCom(0xC6);
LcdWriteData('0' + (sw_sec % 60) / 10);
LcdWriteData('0' + (sw_sec % 60) % 10);
/* 显示百分秒 */
LcdWriteCom(0xC9);
LcdWriteData('0' + sw_csec / 10);
LcdWriteData('0' + sw_csec % 10);
}
}
/* 按键扫描处理 */
void KeyScan()
{
if(mode == 0) /* 时钟模式下的按键 */
{
/* K1：进入闹钟设置 */
if(K1 == 0)
{
Delay10ms();
if(K1 == 0)
{
while(!K1);
SetAlarm();
last_mode = 0xFF; /* 强制刷新界面 */
ReturnSound();
}
}
/* K2：进入秒表模式 */
if(K2 == 0)
{
Delay10ms();
if(K2 == 0)
{
while(!K2);
KeySound();
mode = 2;
sw_running = 0; /* 秒表停止 */
sw_sec = 0; /* 秒表归零 */
sw_csec = 0;
}
}
}
else if(mode == 2) /* 秒表模式下的按键 */
{
/* K3：开始/暂停秒表 */
if(K3 == 0)
{
Delay10ms();
if(K3 == 0)
{
while(!K3);
KeySound();
sw_running = !sw_running; /* 切换运行状态 */
TR1 = sw_running; /* 控制定时器启停 */
}
}
/* K4：秒表复位（仅在停止时有效） */
if(K4 == 0)
{
Delay10ms();
if(K4 == 0)
{
while(!K4);
KeySound();
if(!sw_running)
{
sw_sec = 0; /* 秒表归零 */
sw_csec = 0;
}
}
}
/* K2：返回时钟模式 */
if(K2 == 0)
{
Delay10ms();
if(K2 == 0)
{
while(!K2);
mode = 0;
TR1 = 0; /* 关闭定时器 */
sw_running = 0;
sw_sec = 0;
sw_csec = 0;
ReturnSound();
}
}
}
}
/* 闹钟设置功能 */
void SetAlarm()
{
/* 显示闹钟设置界面标题 */
LcdWriteCom(0x80);
LcdWriteData('A'); LcdWriteData('l'); LcdWriteData('a'); LcdWriteData('r');
LcdWriteData('m'); LcdWriteData(' '); LcdWriteData('C'); LcdWriteData('l');
LcdWriteData('o'); LcdWriteData('c'); LcdWriteData('k'); LcdWriteData(' ');
LcdWriteData('S'); LcdWriteData('e'); LcdWriteData('t'); LcdWriteData(' ');
/* 显示时间占位符 */
LcdWriteCom(0xC0);
LcdWriteData(' '); LcdWriteData(' '); LcdWriteData(' '); LcdWriteData(' ');
LcdWriteData(' '); LcdWriteData(':'); LcdWriteData(' '); LcdWriteData(' ');
LcdWriteData(' '); LcdWriteData(' '); LcdWriteData(' '); LcdWriteData(' ');
LcdWriteData(' '); LcdWriteData(' '); LcdWriteData(' '); LcdWriteData(' ');
/* 显示当前闹钟小时 */
LcdWriteCom(0xC3);
LcdWriteData('0' + alarm_hour / 10);
LcdWriteData('0' + alarm_hour % 10);
/* 显示当前闹钟分钟 */
LcdWriteCom(0xC6);
LcdWriteData('0' + alarm_min / 10);
LcdWriteData('0' + alarm_min % 10);
/* 显示闹钟开关状态 */
LcdWriteCom(0xCA);
if(alarm_on) { LcdWriteData(' '); LcdWriteData('O'); LcdWriteData('N'); }
else { LcdWriteData('O'); LcdWriteData('F'); LcdWriteData('F'); }
/* 设置闹钟小时 */
LcdWriteCom(0xC4);
LcdWriteCom(0x0f); /* 显示光标 */
while(1)
{
if(K3 == 0) /* K3加 */
{
Delay10ms();
if(K3 == 0)
{
while(!K3);
KeySound();
if(alarm_hour < 23) alarm_hour++; else alarm_hour = 0;
LcdWriteCom(0xC3);
LcdWriteData('0' + alarm_hour / 10);
LcdWriteData('0' + alarm_hour % 10);
LcdWriteCom(0xC4);
LcdWriteCom(0x0f);
}
}
if(K4 == 0) /* K4减 */
{
Delay10ms();
if(K4 == 0)
{
while(!K4);
KeySound();
if(alarm_hour > 0) alarm_hour--; else alarm_hour = 23;
LcdWriteCom(0xC3);
LcdWriteData('0' + alarm_hour / 10);
LcdWriteData('0' + alarm_hour % 10);
LcdWriteCom(0xC4);
LcdWriteCom(0x0f);
}
}
if(K1 == 0) /* K1确认 */
{
Delay10ms();
if(K1 == 0)
{
while(!K1);
KeySound();
break;
}
}
}
/* 设置闹钟分钟 */
LcdWriteCom(0xC7);
LcdWriteCom(0x0f); /* 显示光标 */
while(1)
{
if(K3 == 0) /* K3加 */
{
Delay10ms();
if(K3 == 0)
{
while(!K3);
KeySound();
if(alarm_min < 59) alarm_min++; else alarm_min = 0;
LcdWriteCom(0xC6);
LcdWriteData('0' + alarm_min / 10);
LcdWriteData('0' + alarm_min % 10);
LcdWriteCom(0xC7);
LcdWriteCom(0x0f);
}
}
if(K4 == 0) /* K4减 */
{
Delay10ms();
if(K4 == 0)
{
while(!K4);
KeySound();
if(alarm_min > 0) alarm_min--; else alarm_min = 59;
LcdWriteCom(0xC6);
LcdWriteData('0' + alarm_min / 10);
LcdWriteData('0' + alarm_min % 10);
LcdWriteCom(0xC7);
LcdWriteCom(0x0f);
}
}
if(K1 == 0) /* K1确认 */
{
Delay10ms();
if(K1 == 0)
{
while(!K1);
KeySound();
break;
}
}
}
/* 设置闹钟开关 */
LcdWriteCom(0xCC);
LcdWriteCom(0x0f); /* 显示光标 */
while(1)
{
if(K3 == 0) /* K3：开启闹钟 */
{
Delay10ms();
if(K3 == 0)
{
while(!K3);
KeySound();
alarm_on = 1;
LcdWriteCom(0xCA);
LcdWriteData(' '); LcdWriteData('O'); LcdWriteData('N');
LcdWriteCom(0xCC);
LcdWriteCom(0x0f);
}
}
if(K4 == 0) /* K4：关闭闹钟 */
{
Delay10ms();
if(K4 == 0)
{
while(!K4);
KeySound();
alarm_on = 0;
LcdWriteCom(0xCA);
LcdWriteData('O'); LcdWriteData('F'); LcdWriteData('F');
LcdWriteCom(0xCC);
LcdWriteCom(0x0f);
}
}
if(K1 == 0) /* K1确认退出 */
{
Delay10ms();
if(K1 == 0)
{
while(!K1);
KeySound();
break;
}
}
}
/* 退出设置，保存闹钟参数到DS1302 RAM */
LcdWriteCom(0x0c); /* 关闭光标 */
Ds1302Write(0x8E, 0x00); /* 允许写DS1302 */
Ds1302Write(0xC0, alarm_hour); /* 保存小时到RAM */
Ds1302Write(0xC2, alarm_min); /* 保存分钟到RAM */
Ds1302Write(0xC4, alarm_on); /* 保存开关状态到RAM */
Ds1302Write(0x8E, 0x80); /* 禁止写DS1302 */
}
/* 闹钟判断 */
void AlarmJudge()
{
unsigned char h, m, s;
h = (TIME[2] >> 4) * 10 + (TIME[2] & 0x0f); /* 当前小时 */
m = (TIME[1] >> 4) * 10 + (TIME[1] & 0x0f); /* 当前分钟 */
s = (TIME[0] >> 4) * 10 + (TIME[0] & 0x0f); /* 当前秒 */
/* 闹钟响铃中：每分钟的0秒检查是否超时 */
if(alarm_buz)
{
if(s == 0)
{
alarm_buz_cnt++;
if(alarm_buz_cnt > 50) /* 超过50分钟则停止响铃 */
{
alarm_buz_cnt = 0;
alarm_buz = 0;
}
}
}
/* 到达闹钟时间且前3秒触发响铃 */
if(alarm_on && h == alarm_hour && m == alarm_min && s >= 0 && s < 3)
{
if(!alarm_buz) alarm_buz = 1;
}
/* 到达59秒时关闭闹钟 */
if(s == 59)
alarm_buz = 0;
/* 按任意键关闭闹钟 */
if(K1 == 0 || K2 == 0)
{
alarm_buz = 0;
Buzzer = 1;
}
}
/* 闹钟蜂鸣处理（蜂鸣器交替响） */
void AlarmBuzPro()
{
if(alarm_buz)
{
Buzzer = 0;
DelayMs(50);
Buzzer = 1;
DelayMs(50);
}
}
/* 定时器1初始化（用于秒表） */
void Timer1Init()
{
TMOD &= 0x0F; /* 清除T1位 */
TMOD |= 0x10; /* 设置T1为模式1（16位定时器） */
ET1 = 1; /* 使能T1中断 */
EA = 1; /* 开总中断 */
}
/* 定时器1中断服务函数（约10ms中断一次） */
void Timer1() interrupt 3
{
TH1 = 0xD8; /* 重装初值 */
TL1 = 0xF0;
if(sw_running) /* 秒表运行时 */
{
sw_csec++;
if(sw_csec >= 100) /* 百分秒满100进1秒 */
{
sw_csec = 0;
sw_sec++;
}
}
}
/* 温度处理：读取DS18B20并转换为10倍温度值 */
void TempPros()
{
int raw;
unsigned char sign = 0;
if(!DS18B20_GetTemp(&raw)) /* 读取原始温度 */
return;
if(raw & 0x8000) /* 负温度处理 */
{
raw = ~raw + 1;
sign = 1;
}
temperature = raw * 10 / 16; /* 转换为10倍温度值 */
if(sign)
temperature = -temperature;
DS18B20_StartConvert(); /* 启动下一次温度转换 */
}
/* 毫秒延时函数（12MHz晶振） */
void DelayMs(unsigned int ms)
{
unsigned int i, j;
for(i=0; i<ms; i++)
for(j=0; j<112; j++);
}
/* 按键提示音（短响一声） */
void KeySound()
{
Buzzer = 0;
DelayMs(40);
Buzzer = 1;
}
/* 返回提示音（短响两声） */
void ReturnSound()
{
Buzzer = 0;
DelayMs(40);
Buzzer = 1;
DelayMs(30);
Buzzer = 0;
DelayMs(40);
Buzzer = 1;
}
/* 10ms延时函数（12MHz晶振） */
void Delay10ms(void)
{
unsigned char a,b,c;
for(c=1;c>0;c--)
for(b=38;b>0;b--)
for(a=130;a>0;a--);
}
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