基于51单片机和Proteus仿真的自动打铃器 -

标题: 基于51单片机和Proteus仿真的自动打铃器 [打印本页]

作者: futao 时间: 2019-5-9 17:29
标题: 基于51单片机和Proteus仿真的自动打铃器
#include <AT89X52.h>
#include <stdio.h>
bit bclassFlg = 0;
sbit FMQ = P3 ^ 7;

unsigned char stringtemp[10]="";

struct time
{
unsigned char second;
unsigned char minute;
unsigned char hour;
unsigned char day;
unsigned char weekday;
unsigned char month;
unsigned int year;
} time;

sbit tim_sda=P2^6;
sbit tim_scl=P2^7;

sbit lcd16rs = P2^0;
sbit lcd16rw = P2^1;
sbit lcd16en = P2^2;

unsigned char lcd16_1[16];
unsigned char lcd16_2[16] = {"welcome"};

bit    tim_ack; // i2c slave ack.
bit    tim_err;
unsigned char tim_rd_buffer[16];
unsigned char tim_wr_buffer[16];

/*****************11us延时函数*************************/
void delay11us(unsigned char t)
{
  for (;t>0;t--);
}

void delay(unsigned int x)
{
unsigned int a,b;
for(a=x;a>5;a--);
for(b=10;b>0;b--);
}

//写指令
void write_com(unsigned char com)
{
P1=com;// 将指令值写到数据线上
lcd16rs=0;//写指令
lcd16en=0;//给一个LCD 使能脉冲
delay(10);
lcd16en=1;
delay(10);
lcd16en=0;

}

//写数据
void write_date(unsigned char date)
{
P1=date; //将数据写到数据线上
lcd16rs=1; //写数据
lcd16en=0; //给一个LCD 使能脉冲
delay(10);
lcd16en=1;
delay(10);
lcd16en=0;

}

//初始化LCD
void lcd_init()
{
lcd16rw = 0;
write_com(0x38);//显示模式设置
delay(20);
write_com(0x0f);//开显示，显示光标、光标闪烁
delay(20);
write_com(0x06);//光标和显示指针加一，屏幕不移动
delay(20);
write_com(0x01);//清显示屏
delay(20);
}

//在第N行显示第M个字
void lcd16_n_line_n_byte(unsigned char n_line,unsigned char n_byte)
{
unsigned char j;
unsigned char com;
unsigned char *dat1;
unsigned char *dat2;

dat1 = lcd16_1;
dat2 = lcd16_2;

if(n_line==0)    //显示第一行。
{
for(j=0;j<n_byte;j++)
{
com = 0x80+j;
write_com(com);
write_date(*dat1);
dat1++;
}
}
if(n_line==1)    //显示第二行。
{
for(j=0;j<n_byte;j++)
{
com = 0xc0+j;
write_com(com);
write_date(*dat2);
dat2++;
}
}
}

// i2c start.
void PCF8563_start() //start flag is when tim_scl 1, tim_sdafrom 1 to 0.
{
tim_sda = 1;
delay11us(1);
tim_scl = 1;
delay11us(1);
tim_sda = 0;
delay11us(1);
}

// i2c stop.
void PCF8563_stop()      //start flag is when tim_scl 1, tim_sdafrom 0 to 1.
{
tim_sda = 0;
delay11us(1);
tim_scl = 1;
delay11us(1);
tim_sda = 0;
}

//i2c slave respons.
void PCF8563_respons()
{
unsigned char i;
tim_scl = 1;
delay11us(1);
while((tim_sda)&&(i<250))  i++;
if(!tim_sda)
tim_ack = 1;
else
tim_ack = 0;
tim_scl = 0;
delay11us(1);
}

// i2c master respons.
void PCF8563_master_respons(bit master_ack)
{
tim_scl = 0;
delay11us(1);
tim_sda = ~master_ack;
delay11us(1);
tim_scl = 1;
delay11us(1);
tim_scl = 0;
delay11us(1);
}

//i2c init.
void PCF8563_init()
{
tim_sda = 1;
delay11us(1);
tim_scl = 1;
delay11us(1);
}

// i2c write n byte.
void PCF8563_wr_byte(unsigned char dat)
{
unsigned char i , temp;
temp = dat;
for(i=0;i<8;i++)
{
tim_scl = 0;
delay11us(1);

if(temp&0x80)
tim_sda = 1;
else
tim_sda = 0;
temp = temp<<1;

delay11us(1);
tim_scl = 1;
delay11us(1);

}
tim_scl = 0;
delay11us(1);
tim_sda = 1;
delay11us(1);
}

unsigned char PCF8563_rd_byte()
{
unsigned char i,k;
tim_scl = 0;
delay11us(1);
tim_sda = 1;
delay11us(1);
for(i=0;i<8;i++)
{
tim_scl = 1;
delay11us(1);
k = (k<<1)|tim_sda;
tim_scl = 0;
delay11us(1);
}
return k;
}

void PCF8563_write_n_byte(unsigned char add,unsigned char com,unsigned char *dat,unsigned char n_byte) //
{
unsigned char i = 0;
unsigned char temp;

temp = *dat;       // send to begin address to 'temp'.

add = add<<1;
add = 0xa0+add+0x00;

PCF8563_start();
PCF8563_wr_byte(add); //send EEPROM address, bit 0 = 0 is write.
PCF8563_respons();
if(!tim_ack) //if i2c respons.
{
tim_err = 1;
return;
}

PCF8563_wr_byte(com); //send EEPROM beginning address.
PCF8563_respons();
if(!tim_ack) //if i2c respons.
{
tim_err = 1;
return;
}

while(n_byte)    //write n byte.
{
PCF8563_wr_byte(temp);
PCF8563_respons();
if(!tim_ack)
{
tim_err = 1;
PCF8563_stop();
return;
}
temp++;
n_byte--;
}

PCF8563_stop();
}

void PCF8563_read_n_byte(unsigned char add,unsigned char com,unsigned char n_byte)
{
unsigned char *temp;

temp = tim_rd_buffer;

add = add<<1;
add = 0xa0+add+0x00;

PCF8563_start();

PCF8563_wr_byte(add);      //send address + wr.
PCF8563_respons();

PCF8563_wr_byte(com); // first byte address.
PCF8563_respons();

add = add+0x01;

PCF8563_start();
PCF8563_wr_byte(add);    //send address + rd.
PCF8563_respons();

while(n_byte)    // rd n byte .
{
*temp = PCF8563_rd_byte();
if(n_byte != 1) //if i2c respons.
{
PCF8563_master_respons(1); //if the number is not the last one, master send a ack bit.
}
temp++;
n_byte--;
}
PCF8563_stop();
}

void PCF8563_wr_time()
{
tim_wr_buffer[0] = 0x00; //second
tim_wr_buffer[1] = 0x11; //minute
tim_wr_buffer[2] = 0x22; //hour

tim_wr_buffer[3] = 0x15; //day
tim_wr_buffer[4] = 0x03; //weekday
tim_wr_buffer[5] = 0x06; //month
tim_wr_buffer[6] = 0x10; //year

PCF8563_write_n_byte(1,2,tim_wr_buffer,8);
}

//延时眼熟
void DelayFM(unsigned int x)
{
unsigned char t;
while(x--)
{
     for(t=0;t<120;t++);
}
}
//蜂鸣器驱动函数，参数为发声声调
void FM(unsigned char x)
{
unsigned char i;
for(i=0;i<100;i++)
{
     FMQ = ~FMQ;
DelayFM(x);
}
FMQ = 0;
}

void PCF8563_rd_time()
{
unsigned char temp;

PCF8563_read_n_byte(1,2,9);

time.second = ((tim_rd_buffer[1]&0x70)>>4)*10 + (tim_rd_buffer[1]&0x0f); //second

time.minute = ((tim_rd_buffer[2]&0x70)>>4)*10 + (tim_rd_buffer[2]&0x0f); //minute

time.hour = ((tim_rd_buffer[3]&0x30)>>4)*10 + (tim_rd_buffer[3]&0x0f); //hour
time.day = ((tim_rd_buffer[4]&0x30)>>4)*10 + (tim_rd_buffer[4]&0x0f); //day
time.weekday = tim_rd_buffer[5]&0x07; //weekday
time.month = ((tim_rd_buffer[6]&0x10)>>4)*10 + (tim_rd_buffer[6]&0x0f); //month

  if(time.second == 0)
  {
if(bclassFlg == 0 )
{
   sprintf(stringtemp,"%x%x",time.hour,time.minute);
//    printf("%s\n",stringtemp);
   printf("it's time to have class\n"); //上课
   bclassFlg = 1;
   FM(3);
}
  }
  else if(time.second == 45) //如果到了45分钟，开始下课铃
  {
if(bclassFlg == 1)
{
   sprintf(stringtemp,"%x%x",time.hour,time.minute);
//    printf("%s\n",stringtemp);
   printf("it's time to finish class\n");
   bclassFlg = 0;
   FM(7);
}
  }
  else
  {
  }

temp = (tim_rd_buffer[4]&0x80)>>7;
time.year = (temp+20)*100+((tim_rd_buffer[7]&0x70)>>4)*10 + (tim_rd_buffer[7]&0x0f);    //year
lcd16_1[0] = time.hour/10+0x30;    //hour
lcd16_1[1] = time.hour%10+0x30;
lcd16_1[2] = '-';
lcd16_1[3] = time.minute/10+0x30;    //minute
lcd16_1[4] = time.minute%10+0x30;
lcd16_1[5] = '-';
lcd16_1[6] = time.second/10+0x30;    //second
lcd16_1[7] = time.second%10+0x30;

lcd16_2[0] = time.year/1000+0x30;    //year
lcd16_2[1] = (time.year%1000)/100+0x30;
lcd16_2[2] = (time.year%100)/10+0x30;
lcd16_2[3] = time.year%10+0x30;
lcd16_2[4] = '-';
lcd16_2[5] = time.month/10+0x30;  //mon
lcd16_2[6] = time.month%10+0x30;
lcd16_2[7] = '-';
lcd16_2[8] = time.day/10+0x30;    //day
lcd16_2[9] = time.day%10+0x30;

lcd16_2[10] = 'w';
lcd16_2[11] = 'e';
lcd16_2[12] = 'e';
lcd16_2[13] = 'k';
lcd16_2[14] = ':';
lcd16_2[15] = time.weekday+0x30;

lcd16_n_line_n_byte(0,16);
lcd16_n_line_n_byte(1,16);
}

void DelayMS(unsigned int ms)
{
unsigned char i;
while(ms--)
{
     for(i=0;i<120;i++);
}
}

void InitUart(void)
{
SCON = 0x50;                               //工作方式1
TMOD = 0x21;
PCON = 0x00;
TH1 = 0xfd;                                  //使用T1作为波特率发生器
TL1 = 0xfd;
TI = 1;
TR1 = 1;                                     //启动T1    //启动T1
}

void main()
{
  PCF8563_init();
// PCF8563_wr_time();
lcd_init();
  InitUart();
while(1)
{
PCF8563_rd_time();
DelayMS(250);
}
}

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基于51单片机和Proteus仿真的自动打铃器.zip

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作者: HWL0541 时间: 2020-3-20 08:19
谢谢楼主分享

作者: nzg4355 时间: 2020-12-13 16:22
楼主，有方案说明和原理图吗？

欢迎光临 (http://www.51hei.com/bbs/)