藍橋杯任務基于單片機的電子鐘

ID:261418 · 發表于 2017-12-14 10:30

基于單片機的電子鐘仿真原理圖如下（proteus仿真工程文件可到本帖附件中下載）

藍橋杯任務單片機源程序如下:

#include <regx51.h>
#include <intrins.h>
sfr AUXR = 0x8e;
/*數碼管顯示字符轉換表*/
unsigned char tab[] = {0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f,0x00,0x40,0x39};
signed char num[] = {10,10,10,10,10,10,10,10}; //數碼管顯示緩沖區
signed char timeclock[] = {0,0,11,0,0,11,0,0}; //鬧鐘時間
unsigned char TRH0,TRL0; //T0重載值的高字節和低字節
bit clock = 0; //鬧鐘時間到標志位
bit flag = 0; //1s閃爍標志位
bit flag200ms = 0; //200ms定時標志位
bit timesetup = 0; //時間設置標志位
bit clocksetup = 0; //鬧鐘設置標志位
unsigned position = 0; //設置小時，分鐘，秒標志位（‘1’小時，‘2’分鐘，‘3’秒）
unsigned char Temp; //溫度值
unsigned char Time[5]; //時間值
void key(); //按鍵判斷執行函數
void Ds1302_Display(); //時間顯示函數
void Ds18b20_Display(); //溫度顯示函數
extern void Ds1302_Init(); //DS1302初始化函數
void Ds1302_Time(unsigned char *time); //帶參數的向DS18B20寫時間
extern void Write_Ds1302_Byte(unsigned char temp); //向DS1302寫入數據
extern unsigned char Read_Ds1302 (unsigned char address); //從DS1302讀取數據
extern unsigned char DS18B20_Temp(); //讀取DS18B20溫度值
/*T0初始化函數（ms = 中斷時間）*/
void Time0_Init(unsigned char ms)
{
unsigned long num; //臨時變量
num = 12000000 / 12; //12分頻定時器計數頻率
num = (num * ms)/1000; //計算所需的計數值
num = 65536 - num; //計算定時器重載值
TRH0 = (unsigned char)(num>>8); //定時器重載值拆分為高低字節
TRL0 = (unsigned char)num;
TH0 = TRH0; //加載T0重載值
TL0 = TRL0;
AUXR &= 0x7F;
TMOD &= 0xf0; //清零T0的控制位
TMOD |= 0x01; //配置T0為模式1
EA = 1; //使能總中斷
ET0 = 1; //使能T0中斷
TR0 = 1; //啟動T0
}
void main()
{
unsigned char i,k=0;
Time0_Init(1); //初始化T0，定時時間為1ms
Ds1302_Init(); //初始化DS1302
while(1)
{
key();
for(i=0;i<8;i++)
{
if(num[i]==timeclock[i])
k++ ;
else
k = 0;
}
if(k == 8)
clock = 1;
}
}
/*DS18B20顯示函數*/
void Ds18b20_Display()
{
unsigned char i;
if(flag200ms != 0)
{
flag200ms = 0;
Temp = DS18B20_Temp();
for(i=0;i<5;i++)
{
num[i] = 10;
}
num[5] = Temp / 10;
num[6] = Temp % 10;
num[7] = 12;
}
}
/*DS1302顯示函數*/
void Ds1302_Display()
{
static unsigned char i;
static unsigned char pers = 0xaa;
if(flag200ms != 0)
{
flag200ms = 0;
for(i=0;i<3;i++)
{
Time[i] = Read_Ds1302(i); //每200ms獲取時間
}
if(pers != Time[0]) //判斷時間有沒有變化
{
num[7] = Time[0] & 0x0f; //秒
num[6] = Time[0] >> 4;
num[5] = 11;
num[4] = Time[1] & 0x0f; //分
num[3] = Time[1] >> 4;
num[2] = 11;
num[1] = Time[2] & 0x0f; //時
num[0] = Time[2] >> 4;
pers = Time[0]; //將變化值重新寫入判斷值
}
}
}
/*數碼管顯示函數*/
void Display()
{
static unsigned char we = 0;
P0 = 0x00; //清除鬼影
P2 |= 0xff;
P2 &= ~(1<<we); //位選擇
if(clocksetup)
P0 = tab[timeclock[we]];
else
P0 = tab[num[we]]; //顯示數選擇
if(flag) //進入設置狀態
{
switch(position) //判斷是那個設置位
{
case 1: P2 |= 0xc0; break; //秒
case 2: P2 |= 0x18; break; //分
case 3: P2 |= 0x03; break; //時
default : position = 0; timesetup = 0; clocksetup = 0; break;
}
}
if(++we >= 8) //八個數碼管
we = 0;
}
/*T0中斷函數*/
void Time0_inte() interrupt 1
{
static unsigned char ms = 0;
static unsigned char flag1s = 0;
static unsigned char flag5s = 0;
TH0 = TRH0; //加載T0重載值
TL0 = TRL0;
Display(); //數碼管顯示
if(++ms >= 200)
{
flag200ms = 1;
ms = 0;
if(flag5s < 5 && clock) //鬧鐘5秒時間判斷
{
P1_0 = ~P1_0;
}
else
{
clock = 0;
P1_0 = 0;
}
if(++flag1s >= 5)
{
flag1s = 0;
flag = ~flag;
if(clock)
flag5s++;
else
flag5s = 0;
}
}
}
//向DS1302寫入時間
void TimeWeite()
{
unsigned char ti[3];
//將兩個分開的時間合成在一起
ti[0] = ((num[6]<<4) | num[7]);
ti[1] = ((num[3]<<4) | num[4]);
ti[2] = ((num[0]<<4) | num[1]);
Ds1302_Time(ti);
}
void key()
{
if((P3_0==0||P3_1==0||P3_2==0||P3_3==0)&&clock==1) //鬧鐘響應，進行關閉
{
clock = 0;
while(!P3_0);while(!P3_1);
while(!P3_2);while(!P3_3);
}
if(timesetup!=1 && clocksetup!=1 && P3_0==1) //按下顯示溫度值，松開顯示時間
{
Ds1302_Display();
}else if(timesetup!=1 && clocksetup!=1 &&P3_0 == 0)
{
Ds18b20_Display();
}
if(clocksetup !=1 && P3_3 == 0) //進入時間設置
{
timesetup = 1;
position++;
if(position == 4) //向DS1302重新寫入時間
{
TimeWeite();
}
while(!P3_3);
}
if(timesetup !=1 && P3_2 == 0) //進入鬧鐘時間設置
{
clocksetup = 1;
position++;
clock = 0;
while(!P3_2);
}
if((timesetup==1||clocksetup==1) && P3_0 == 0) //進入時間設置，時間+1
{
if(timesetup) //實時時鐘設置
{
if(position == 1) //秒
{
if(++num[7] >= 10)
{
num[7] = 0;
if(++num[6] >=6)
num[6] = 0;
}
}else
if(position == 2) //分
{
if(++num[4] >= 10)
{
num[4] = 0;
if(++num[3] >=6)
num[3] = 0;
}
}else
if(position == 3) //時
{
if(num[0] == 2)
{
if(++num[1] >= 5)
{
num[1] = 0;
num[0] = 0;
}
}else
if(++num[1] >= 10)
{
num[1] = 0;
if(++num[0] >=3)
num[0] = 0;
}
}
}else if(clocksetup) //鬧鐘時間設置
{
if(position == 1) //秒
{
if(++timeclock[7] >= 10)
{
timeclock[7] = 0;
if(++timeclock[6] >=6)
timeclock[6] = 0;
}
}else
if(position == 2) //分
{
if(++timeclock[4] >= 10)
{
timeclock[4] = 0;
if(++timeclock[3] >=6)
timeclock[3] = 0;
}
}else
if(position == 3) //時
{
if(timeclock[0] == 2)
{
if(++timeclock[1] >= 4)
{
timeclock[1] = 0;
timeclock[0] = 0;
}
}else
if(++timeclock[1] >= 10)
{
timeclock[1] = 0;
if(++timeclock[0] >=3)
timeclock[0] = 0;
}
}
}
while(!P3_0);
}
if((timesetup==1||clocksetup==1) && P3_1 == 0) //進入時間設置，時間-1
{
if(timesetup) //實時時鐘設置
{
if(position == 1) //秒
{
if(--num[7] < 0)
{
num[7] = 9;
if(--num[6] < 0)
num[6] = 5;
}
}else
if(position == 2) //分
{
if(--num[4] < 0)
{
num[4] = 9;
if(--num[3] < 0)
num[3] = 5;
}
}else
if(position == 3) //時
{
if(--num[1] < 0)
{
num[1] = 9;
if(--num[0] < 0)
{
num[0] = 2;
……………………
…………限于本文篇幅余下代碼請從51黑下載附件…………