基于PIC16F877A单片机的温度，时间显示以及闹钟设置，硬件和软件配备

一，硬件图

#include

__CONFIG(0x3B31);

#define rs RD0

#define rw RD1

#define en RD2

#define BEEP RD3

#define s1 RA0

#define s2 RA1

#define s3 RA2

#define s4 RA3

#define uint unsigned int

#define uchar unsigned char

signed char set_time[7]={0,58,23,6,1,5,12};//秒 分 时 星期 日 月 年

signed char read_time[7]={0,0,0,0,0,0,0};

signed char shi=7,fen=15,alarm_time=1,reapeat_fen=2,cent;//闹钟时，闹钟分，闹铃响分钟，闹铃响间隔

uchar s1_num,s2_num;

const uchar alarm[]={"ALARM TIME:"};

const uchar mode[]={"MODE:"};

const uchar rpt[]={"RPT:"};

const uchar min[]={"min"};

void PORT_INIT()

{

TRISA=0xff;//A口设置为输入

ADCON1=0x06;//RA口上电复位为模拟输入口

TRISC3=1;//SCL和SDA设置为输入

TRISC4=1;

TRISD=0x00;//D口设置为输出

}

void IIC_INIT()

{

SSPCON=0x28;

STAT_SMP=0;

SSPADD=4;

}

void delayms(uint z)//延时 函数

{

uint x,y;

for(x=z;x>0;x--)

for(y=110;y>0;y--);

}

void delayus(uint k)

{

while(k--);

}

void write_byte_low(uchar R1,uchar flag0)//写一个字节的低4位，flag0为指令/数据选择位

{ //,0为写指令，1为写数据

uchar low;

rs=flag0;

low=R1&0x0f;

low=low<<4;

PORTD&=0x0f;NOP();

PORTD|=low;NOP();//写指令的低4位

en=1;delayus(20);en=0;

}

void lcd_write(uchar dat,uchar flag1)//写指令/数据到1602

{

uchar dat_high,dat_low;

dat_high=dat>>4;

write_byte_low(dat_high,flag1);

dat_low=dat&0x0f;

write_byte_low(dat_low,flag1);

NOP();

}

void write_string(uchar address,uchar const *str)//往指定的地址写字符串

{

uchar i=0;

lcd_write(address,0);

while(str[i]!='\0')

{

lcd_write(str[i],1);

delayus(5);

i++;

}

}

void LCD_INIT()//初始化函数

{

rw=0;

en=0;

delayms(20);

write_byte_low(0b0011,0);

delayms(1);

write_byte_low(0b0011,0);

delayus(10);

write_byte_low(0b0011,0);

delayus(10);

write_byte_low(0b0010,0);

delayms(1);

lcd_write(0x28,0);

delayms(5);

lcd_write(0x0c,0);

delayms(5);

lcd_write(0x01,0);

delayms(5);

lcd_write(0x06,0);

delayms(5);

}

void naoling()

{

uchar i;

for(i=0;i<20;i++)

{

BEEP=1;

delayus(5);

BEEP=0;

delayus(5);

}

}

void IIC_SEND(uchar num)

{

SSPBUF=num;

while(STAT_RW==1);//等待发送结束

while(SSPIF==0);

while(ACKSTAT==1);//等待应答

}

signed char read_temp()//读温度

{

signed char temp;

SEN=1;

while(SEN==1);

IIC_SEND(0b10011010);

IIC_SEND(0);

RSEN=1;

while(RSEN==1);

IIC_SEND(0b10011011);

RCEN=1;

while(RCEN==1);

// SSPIF=0;

// while(SSPIF==0);//等待接收结束

temp=SSPBUF;

PEN=1;

while(PEN==1);

return temp;

}

void dispose()//BCD数据处理

{

uchar i,temp1,temp2;

for(i=0;i<7;i++)

{

temp1=set_time[i]/10;

temp2=set_time[i]%10;

set_time[i]=temp1*16+temp2;

}

}

void time_csh()//时间初始化

{

uchar i;

dispose();

for(i=0;i<7;i++)

{

SEN=1;//起始信号

while(SEN==1);//检测起始信号是否已完成

IIC_SEND(0xd0);

IIC_SEND(i);

IIC_SEND(set_time[i]);

PEN=1;//停止信号

while(PEN==1);

}

}

void read_ds1307()//读时间

{

uchar k;

for(k=0;k<8;k++)

{

SEN=1;//起始信号

while(SEN==1);

IIC_SEND(0xd0);

IIC_SEND(k);

PEN=1;//停止信号

while(PEN==1);

RSEN=1;//重新启动

while(RSEN==1);

IIC_SEND(0xd1);

SSPIF=0;

RCEN=1;

while(SSPIF==0);//等待接收结束

read_time[k-1]=SSPBUF;

NOP();

NOP();

PEN=1;//停止信号

while(PEN==1);

}

}

void display_time()

{

lcd_write(0x80,0);

lcd_write(0x32,1);

lcd_write(0x30,1);

lcd_write(0x30+read_time[6]/16,1);//年

lcd_write(0x30+read_time[6]%16,1);

lcd_write('-',1);

lcd_write(0x30+read_time[5]/16,1);//月

lcd_write(0x30+read_time[5]%16,1);

lcd_write('-',1);

lcd_write(0x30+read_time[4]/16,1);//日

lcd_write(0x30+read_time[4]%16,1);

lcd_write(0x80+0x0d,0);

switch(read_time[3])

{

case 1:lcd_write('M',1);lcd_write('O',1);lcd_write('N',1);break;

case 2:lcd_write('T',1);lcd_write('U',1);lcd_write('E',1);break;

case 3:lcd_write('W',1);lcd_write('E',1);lcd_write('D',1);break;

case 4:lcd_write('T',1);lcd_write('H',1);lcd_write('U',1);break;

case 5:lcd_write('F',1);lcd_write('R',1);lcd_write('I',1);break;

case 6:lcd_write('S',1);lcd_write('A',1);lcd_write('T',1);break;

case 7:lcd_write('S',1);lcd_write('U',1);lcd_write('N',1);break;

}

lcd_write(0x80+0x40,0);

lcd_write(0x30+read_time[2]/16,1);//时

lcd_write(0x30+read_time[2]%16,1);

lcd_write(':',1);

lcd_write(0x30+read_time[1]/16,1); //分

lcd_write(0x30+read_time[1]%16,1);

lcd_write(':',1);

lcd_write(0x30+read_time[0]/16,1); //秒

lcd_write(0x30+read_time[0]%16,1);

NOP();

NOP();

cent=read_temp();

lcd_write(0x80+0x4b,0);

lcd_write(0x30+cent/10,1);

lcd_write(0x30+cent%10,1);

lcd_write(0xdf,1);

lcd_write('C',1);

if((shi==(read_time[2]/16*10+read_time[2]%16))&&(fen<=(read_time[1]/16*10+read_time[1]%16))&&((read_time[1]/16*10+read_time[1]%16)<(fen+alarm_time)))

{

naoling();

}

if((shi==(read_time[2]/16*10+read_time[2]%16))&&(fen+reapeat_fen<=(read_time[1]/16*10+read_time[1]%16))&&((read_time[1]/16*10+read_time[1]%16)<(fen+alarm_time+reapeat_fen)))

{

naoling();

}

if((shi==(read_time[2]/16*10+read_time[2]%16))&&(fen+2*reapeat_fen<=(read_time[1]/16*10+read_time[1]%16))&&((read_time[1]/16*10+read_time[1]%16)<(fen+alarm_time+2*reapeat_fen)))

{

naoling();

}

if((shi==(read_time[2]/16*10+read_time[2]%16))&&(fen+3*reapeat_fen<=(read_time[1]/16*10+read_time[1]%16))&&((read_time[1]/16*10+read_time[1]%16)<(fen+alarm_time+3*reapeat_fen)))

{

naoling();

}

if((shi==(read_time[2]/16*10+read_time[2]%16))&&(fen+4*reapeat_fen<=(read_time[1]/16*10+read_time[1]%16))&&((read_time[1]/16*10+read_time[1]%16)<(fen+alarm_time+4*reapeat_fen)))

{

naoling();

}

}

void setting_time()

{

uchar l,s2_value,setting_flag;

if(s2==0)

{

delayms(10);

if(s2==0)

{

s2_value++;

setting_flag = 1;

while(s2==0);//松手检测

for(l=0;l<7;l++)//存储当前时间数据 //年 星期 月 日 时 分 秒

{

set_time[l]=read_time[l]/16*10+read_time[l]%16;

}

while(setting_flag)

{

if(s2==0)

{

delayms(5);

if(s2==0)

{

s2_value++;

while(s2==0);//松手检测

}

}

if(s2_value==1)

{

lcd_write(0x83,0);//指向年份

lcd_write(0x0f,0);//显示游标并闪烁

if(s3==0)

{

delayms(5);

if(s3==0)

{

set_time[6]++;

if(set_time[6]==100)

{

set_time[6]=0;

}

lcd_write(0x82,0);

lcd_write(0x30+set_time[6]/10,1);

lcd_write(0x30+set_time[6]%10,1);

lcd_write(0x83,0);//指向年份

while(s3==0);

}

}

if(s4==0)

{

delayms(5);

if(s4==0)

{

set_time[6]--;

if(set_time[6]==-1)

{

set_time[6]=99;

}

lcd_write(0x82,0);

lcd_write(0x30+set_time[6]/10,1);

lcd_write(0x30+set_time[6]%10,1);

lcd_write(0x83,0);//指向年份

while(s4==0);

}

}

}

if(s2_value==2)

{

lcd_write(0x86,0);//指向月份

if(s3==0)

{

delayms(5);

if(s3==0)

{

set_time[5]++;

if(set_time[5]==13)

{

set_time[5]=1;

}

lcd_write(0x85,0);

lcd_write(0x30+set_time[5]/10,1);

lcd_write(0x30+set_time[5]%10,1);

lcd_write(0x86,0);//指向月份

while(s3==0);

}

}

if(s4==0)

{

delayms(5);

if(s4==0)

{

set_time[5]--;

if(set_time[5]==0)

{

set_time[5]=12;

}

lcd_write(0x85,0);

lcd_write(0x30+set_time[5]/10,1);

lcd_write(0x30+set_time[5]%10,1);

lcd_write(0x86,0);//指向月份

while(s4==0);

}

}

}

if(s2_value==3)

{

lcd_write(0x89,0);//指向日

if(s3==0)

{

delayms(5);

if(s3==0)

{

set_time[4]++;

if(set_time[4]==32)

{

set_time[4]=1;

}

lcd_write(0x88,0);

lcd_write(0x30+set_time[4]/10,1);

lcd_write(0x30+set_time[4]%10,1);

lcd_write(0x89,0);//指向日

while(s3==0);

}

}

if(s4==0)

{

delayms(5);

if(s4==0)

{

set_time[4]--;

if(set_time[4]==0)

{

set_time[4]=31;

}

lcd_write(0x88,0);

lcd_write(0x30+set_time[4]/10,1);

lcd_write(0x30+set_time[4]%10,1);

lcd_write(0x89,0);//指向日

while(s4==0);

}

}

}

if(s2_value==4)

{

lcd_write(0x8f,0);//指向星期

if(s3==0)

{

delayms(5);

if(s3==0)

{

set_time[3]++;

if(set_time[3]==8)

{

set_time[3]=1;

}

switch(set_time[3])

{

case 1:lcd_write(0x8d,0);lcd_write('M',1);lcd_write('O',1);lcd_write('N',1);break;

case 2:lcd_write(0x8d,0);lcd_write('T',1);lcd_write('U',1);lcd_write('E',1);break;

case 3:lcd_write(0x8d,0);lcd_write('W',1);lcd_write('E',1);lcd_write('D',1);break;

case 4:lcd_write(0x8d,0);lcd_write('T',1);lcd_write('H',1);lcd_write('U',1);break;

case 5:lcd_write(0x8d,0);lcd_write('F',1);lcd_write('R',1);lcd_write('I',1);break;

case 6:lcd_write(0x8d,0);lcd_write('S',1);lcd_write('A',1);lcd_write('T',1);break;

case 7:lcd_write(0x8d,0);lcd_write('S',1);lcd_write('U',1);lcd_write('N',1);break;

}

lcd_write(0x8f,0);//指向星期

while(s3==0);

}

}

if(s4==0)

{

delayms(5);

if(s4==0)

{

set_time[3]--;

if(set_time[3]==0)

{

set_time[3]=7;

}

switch(set_time[3])

{

case 1:lcd_write(0x8d,0);lcd_write('M',1);lcd_write('O',1);lcd_write('N',1);break;

case 2:lcd_write(0x8d,0);lcd_write('T',1);lcd_write('U',1);lcd_write('E',1);break;

case 3:lcd_write(0x8d,0);lcd_write('W',1);lcd_write('E',1);lcd_write('D',1);break;

case 4:lcd_write(0x8d,0);lcd_write('T',1);lcd_write('H',1);lcd_write('U',1);break;

case 5:lcd_write(0x8d,0);lcd_write('F',1);lcd_write('R',1);lcd_write('I',1);break;

case 6:lcd_write(0x8d,0);lcd_write('S',1);lcd_write('A',1);lcd_write('T',1);break;

case 7:lcd_write(0x8d,0);lcd_write('S',1);lcd_write('U',1);lcd_write('N',1);break;

}

lcd_write(0x8f,0);//指向星期

while(s4==0);

}

}

}

if(s2_value==5)

{

lcd_write(0x80+0x41,0);//指向小时

if(s3==0)

{

delayms(5);

if(s3==0)

{

set_time[2]++;

if(set_time[2]==24)

{

set_time[2]=0;

}

lcd_write(0x80+0x40,0);

lcd_write(0x30+set_time[2]/10,1);

lcd_write(0x30+set_time[2]%10,1);

lcd_write(0x80+0x41,0);//指向小时

while(s3==0);

}

}

if(s4==0)

{

delayms(5);

if(s4==0)

{

set_time[2]--;

if(set_time[2]==-1)

{

set_time[2]=23;

}

lcd_write(0x80+0x40,0);

lcd_write(0x30+set_time[2]/10,1);

lcd_write(0x30+set_time[2]%10,1);

lcd_write(0x80+0x41,0);//指向小时

while(s4==0);

}

}

}

if(s2_value==6)

{

lcd_write(0x80+0x44,0);//指向分钟

if(s3==0)

{

delayms(5);

if(s3==0)

{

set_time[1]++;

if(set_time[1]==60)

{

set_time[1]=0;

}

lcd_write(0x80+0x43,0);

lcd_write(0x30+set_time[1]/10,1);

lcd_write(0x30+set_time[1]%10,1);

lcd_write(0x80+0x44,0);//指向分钟

while(s3==0);

}

}

if(s4==0)

{

delayms(5);

if(s4==0)

{

set_time[1]--;

if(set_time[1]==-1)

{

set_time[1]=59;

}

lcd_write(0x80+0x43,0);

lcd_write(0x30+set_time[1]/10,1);

lcd_write(0x30+set_time[1]%10,1);

lcd_write(0x80+0x44,0);//指向分钟

while(s4==0);

}

}

}

if(s2_value==7)

{

lcd_write(0x80+0x47,0);//指向秒

if(s3==0)

{

delayms(5);

if(s3==0)

{

set_time[0]++;

if(set_time[0]==60)

{

set_time[0]=0;

}

lcd_write(0x80+0x46,0);

lcd_write(0x30+set_time[0]/10,1);

lcd_write(0x30+set_time[0]%10,1);

lcd_write(0x80+0x47,0);//指向分钟

while(s3==0);

}

}

if(s4==0)

{

delayms(5);

if(s4==0)

{

set_time[0]--;

if(set_time[0]==-1)

{

set_time[0]=59;

}

lcd_write(0x80+0x46,0);

lcd_write(0x30+set_time[0]/10,1);

lcd_write(0x30+set_time[0]%10,1);

lcd_write(0x80+0x47,0);//指向分钟

while(s4==0);

}

}

}

if(s2_value==8)//这里注意？

{

s2_value=0;

lcd_write(0x0c,0);

setting_flag=0;

time_csh();

}

}

}

}

}

void naozhong()

{

write_string(0x80,alarm);

lcd_write(0x30+shi/10,1);

lcd_write(0x30+shi%10,1);

lcd_write('-',1);

lcd_write(0x30+fen/10,1);

lcd_write(0x30+fen%10,1);

write_string(0x80+0x40,mode);

lcd_write(0x30+alarm_time,1);

write_string(0x80+0x47,rpt);

lcd_write(0x30+reapeat_fen/10,1);

lcd_write(0x30+reapeat_fen%10,1);

write_string(0x80+0x4d,min);

}

uchar s1_scan()

{

if(s1==0)

{

delayms(5);

if(s1==0)

{

s1_num++;

if(s1_num==2)

{

s1_num=0;

s2_num=0;

lcd_write(0x0c,0);

}

while(s1==0);

lcd_write(0x01,0);

if(s1_num==1)

{

naozhong();

lcd_write(0x0f,0);

}

}

}

return s1_num;

}

void setting_naozhong()

{

if(s2==0)

{

delayms(5);

if(s2==0)

{

s2_num++;

if(s2_num==4)

{

s2_num=0;

}

while(s2==0);

}

}

switch(s2_num)

{

case 0:

{

lcd_write(0x8c,0);

if(s3==0)

{

delayms(5);

if(s3==0)

{

shi++;

if(shi==24)

{

shi=0;

}

lcd_write(0x8b,0);

lcd_write(0x30+shi/10,1);

lcd_write(0x30+shi%10,1);

lcd_write(0x8c,0);//指向小时

while(s3==0);

}

}

if(s4==0)

{

delayms(5);

if(s4==0)

{

shi--;

if(shi==-1)

{

shi=23;

}

lcd_write(0x8b,0);

lcd_write(0x30+shi/10,1);

lcd_write(0x30+shi%10,1);

lcd_write(0x8c,0);//指向小时

while(s4==0);

}

}

break;

}

case 1:

{

lcd_write(0x8f,0);

if(s3==0)

{

delayms(5);

if(s3==0)

{

fen++;

if(fen==60)

{

fen=0;

}

lcd_write(0x8e,0);

lcd_write(0x30+fen/10,1);

lcd_write(0x30+fen%10,1);

lcd_write(0x8f,0);//指向小时

while(s3==0);

}

}

if(s4==0)

{

delayms(5);

if(s4==0)

{

fen--;

if(fen==-1)

{

fen=59;

}

lcd_write(0x8e,0);

lcd_write(0x30+fen/10,1);

lcd_write(0x30+fen%10,1);

lcd_write(0x8f,0);//指向小时

while(s4==0);

}

}

break;

}

case 2:

{

lcd_write(0x80+0x45,0);

if(s3==0)

{

delayms(5);

if(s3==0)

{

alarm_time++;

if(alarm_time==10)

{

alarm_time=1;

}

lcd_write(0x30+alarm_time,1);

lcd_write(0x80+0x45,0);//指向小时

while(s3==0);

}

}

if(s4==0)

{

delayms(5);

if(s4==0)

{

alarm_time--;

if(alarm_time==0)

{

alarm_time=9;

}

lcd_write(0x30+alarm_time,1);

lcd_write(0x80+0x45,0);//指向小时

while(s4==0);

}

}

break;

}

case 3:

{

lcd_write(0x80+0x4c,0);

if(s3==0)

{

delayms(5);

if(s3==0)

{

reapeat_fen++;

if(reapeat_fen==60)

{

reapeat_fen=0;

}

lcd_write(0x80+0x4b,0);

lcd_write(0x30+reapeat_fen/10,1);

lcd_write(0x30+reapeat_fen%10,1);

lcd_write(0x80+0x4c,0);//指向小时

while(s3==0);

}

}

if(s4==0)

{

delayms(5);

if(s4==0)

{

reapeat_fen--;

if(reapeat_fen==-1)

{

reapeat_fen=59;

}

lcd_write(0x80+0x4b,0);

lcd_write(0x30+reapeat_fen/10,1);

lcd_write(0x30+reapeat_fen%10,1);

lcd_write(0x80+0x4c,0);//指向小时

while(s4==0);

}

}

break;

}

default:break;

}

}

void main()

{

PORT_INIT();

LCD_INIT();

IIC_INIT();

time_csh();

while(1)

{

switch(s1_scan())

{

case 0:read_ds1307();display_time();setting_time();break;

case 1:setting_naozhong();break;

default:break;

}

}

}