单片机==ds18B20_ds1302_时日周温（31）

原创 于 2016-10-20 08:08:11 发布 · 1.1k 阅读 · 1 ·
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#单片机 

#include <reg52.h>
#include "delay.h"
#include <intrins.h>
#include <stdio.h>


#define ds1302_sec_add          0x80        //??¨ºy?Y¦Ì??¡¤
#define ds1302_min_add          0x82        //¡¤?¨ºy?Y¦Ì??¡¤
#define ds1302_hr_add           0x84        //¨º¡À¨ºy?Y¦Ì??¡¤
#define ds1302_date_add         0x86        //¨¨?¨ºy?Y¦Ì??¡¤
#define ds1302_month_add        0x88        //??¨ºy?Y¦Ì??¡¤
#define ds1302_day_add          0x8a        //D??¨²¨ºy?Y¦Ì??¡¤
#define ds1302_year_add         0x8c        //?¨º¨ºy?Y¦Ì??¡¤
#define ds1302_control_add      0x8e        //????¨ºy?Y¦Ì??¡¤
#define ds1302_charger_add      0x90                     
#define ds1302_clkburst_add     0xbe

sbit RST = P1^0;
sbit SCK = P1^1;
sbit IO = P1^2;

sbit ds = P1^3;
bit ack = 0;

unsigned char w_tbuf = 3;
unsigned char writeweek = 0;
unsigned char readweek = 0;
unsigned char disweek = 0;

unsigned char tempbuf[3];
unsigned char readbuf[3];
unsigned char disbuf[3];
unsigned char writebuf[3];
unsigned char w_dbuf[3];
unsigned char r_dbuf[3];
unsigned char d_dbuf[3];

unsigned char datebuf[3] = {16,8,19};
unsigned char timebuf[3] = {9,59,10};

//unsigned char weekbuf[7] = {MON,TUE,WED,THU,FRI,SAT,SUN};


#define LCDPORT P0
sbit RS = P2^4;
sbit RW = P2^5;
sbit E = P2^6;

#define LCD_WRITE_DATA 1
#define LCD_WRITE_COM 0

void lcd_write(unsigned char byte, unsigned char flag)
{
    if(flag)
    {
        RS = 1;
    }
    else
    {
        RS = 0;
    }
    RW = 0;
    E = 1;
    LCDPORT = byte;
    delay_us(5);
    E = 0;
}

void lcd_init()
{
    delay_ms(16);
    lcd_write(0x38, LCD_WRITE_COM);
    delay_ms(5);
    lcd_write(0x38, LCD_WRITE_COM);
    delay_ms(5);
    lcd_write(0x38, LCD_WRITE_COM);
    delay_ms(5);
    lcd_write(0x38, LCD_WRITE_COM);
    delay_ms(5);
    lcd_write(0x08, LCD_WRITE_COM);
    delay_ms(5);
    lcd_write(0x01, LCD_WRITE_COM);
    delay_ms(5);
    lcd_write(0x06, LCD_WRITE_COM);
    delay_ms(5);
    lcd_write(0x0C, LCD_WRITE_COM);
    delay_ms(5);
}




void display_str(unsigned char x, unsigned char y, unsigned char * string)
{
    if((x > 15) || (y > 1))
    {
        return;
    }
    if(0 == y)
    {
        lcd_write(0x80 + x, LCD_WRITE_COM);
    }
    if(1 == y)
    {
        lcd_write(0x80 + 0x40 + x , LCD_WRITE_COM);
    }

    while( (*string) != '\0' )
    {
        lcd_write(*string, LCD_WRITE_DATA);
        string++;
    }
}

void ds1302_write_byte(unsigned char addr, unsigned char byte)
{
    unsigned char i;
    addr = addr & 0xfe;
    SCK = 0;
    RST = 0;

    RST = 1;
    for(i = 0; i < 8; i++)
    {   
        IO = addr & 0x01;
        SCK = 0;
        SCK = 1;
        addr >>= 1;
    }
    for(i = 0; i < 8; i++)
    {   
        IO = byte & 0x01;
        SCK = 0;
        SCK = 1;
        byte >>= 1;
    }
    SCK = 0;
    RST = 0;
}


unsigned char ds1302_read_byte(unsigned char addr)
{
    unsigned char i;
    unsigned char temp;
    addr = addr & 0xfe;
    SCK = 0;
    RST = 0;

    RST = 1;

    addr = addr + 1;

    for(i = 0; i < 8; i++)
    {   
        IO = addr & 0x01;
        SCK = 0;
        SCK = 1;
        addr >>= 1;
    }
    for(i = 0; i < 8; i++)
    {
        SCK = 1;
        SCK = 0;
        temp >>= 1;
        if(IO)
        {
            temp += 0x80;
        }
    }
        RST = 0;
        return temp;
}

void ds1302_write_time()
{
    unsigned char i;
    unsigned char temp;
    unsigned char temp1;
    for(i = 0; i < 3; i++)
    {
        temp = timebuf[i] / 10;
        temp1 = timebuf[i] % 10;
        writebuf[i] = (temp << 4) | temp1;
    }
    ds1302_write_byte(ds1302_control_add,0x00);
    ds1302_write_byte(ds1302_hr_add,writebuf[0]);
    ds1302_write_byte(ds1302_min_add,writebuf[1]);
    ds1302_write_byte(ds1302_sec_add,writebuf[2]);
    ds1302_write_byte(ds1302_control_add,0x80);
}

void ds1302_read_time()
{
    unsigned char i;
    unsigned char temp;
    unsigned char temp1;
    readbuf[0] = ds1302_read_byte(ds1302_hr_add);
    readbuf[1] = ds1302_read_byte(ds1302_min_add);
    readbuf[2] = ds1302_read_byte(ds1302_sec_add);

    for(i = 0; i < 3; i++)
    {
        temp = (readbuf[i] >> 4);
        temp1 = (readbuf[i] & 0x0f);
        disbuf[i] = temp * 10 + temp1;
    }
}

void lcd_dis_time()
{
    unsigned char lcddisbuf[9] = {0};
    lcddisbuf[0] = (disbuf[0] / 10) + 0x30;
  lcddisbuf[1] = (disbuf[0] % 10) + 0x30;
  lcddisbuf[2] = ':';
  lcddisbuf[3] = (disbuf[1] / 10) + 0x30;
  lcddisbuf[4] = (disbuf[1] % 10) + 0x30;
  lcddisbuf[5] = ':';
  lcddisbuf[6] = (disbuf[2] / 10) + 0x30;
  lcddisbuf[7] = (disbuf[2] % 10) + 0x30;

  display_str(0,0,lcddisbuf);
}

void ds1302_write_date()
{
    unsigned char i;
    unsigned char temp;
    unsigned char temp1;
    for(i = 0; i < 3; i++)
    {
        temp = datebuf[i] / 10;
        temp1 = datebuf[i] % 10;
        w_dbuf[i] = (temp << 4) | temp1;
    }
    ds1302_write_byte(ds1302_control_add,0x00);
    ds1302_write_byte(ds1302_year_add,w_dbuf[0]);
    ds1302_write_byte(ds1302_month_add,w_dbuf[1]);
    ds1302_write_byte(ds1302_date_add,w_dbuf[2]);
    ds1302_write_byte(ds1302_control_add,0x80);
}

void ds1302_read_date()
{
    unsigned char i;
    unsigned char temp;
    unsigned char temp1;
    r_dbuf[0] = ds1302_read_byte(ds1302_year_add);
    r_dbuf[1] = ds1302_read_byte(ds1302_month_add);
    r_dbuf[2] = ds1302_read_byte(ds1302_date_add);

    for(i = 0; i < 3; i++)
    {
        temp = (r_dbuf[i] >> 4);
        temp1 = (r_dbuf[i] & 0x0f);
        d_dbuf[i] = temp * 10 + temp1;
    }
}

void lcd_dis_date()
{
    unsigned char lcddisbuf[9] = {0};
    lcddisbuf[0] = (d_dbuf[0] / 10) + 0x30;
  lcddisbuf[1] = (d_dbuf[0] % 10) + 0x30;
  lcddisbuf[2] = '-';
  lcddisbuf[3] = (d_dbuf[1] / 10) + 0x30;
  lcddisbuf[4] = (d_dbuf[1] % 10) + 0x30;
  lcddisbuf[5] = '-';
  lcddisbuf[6] = (d_dbuf[2] / 10) + 0x30;
  lcddisbuf[7] = (d_dbuf[2] % 10) + 0x30;

  display_str(0,1,lcddisbuf);
}


void ds1302_write_week()
{
  writeweek = w_tbuf % 10;

    ds1302_write_byte(ds1302_control_add,0x00);
    ds1302_write_byte(ds1302_day_add,writeweek);
    ds1302_write_byte(ds1302_control_add,0x80);
}

void ds1302_read_week()
{
    readweek = ds1302_read_byte(ds1302_day_add);

        disweek = readweek & 0x0f;
}

void lcd_dis_week()
{
    switch(disweek)
      {
              case 0x01:
                {
                      display_str(13,1,"Mon");
                      break;
                }
                case 0x02:
                {
                      display_str(13,1,"Tue");
                      break;
                }
                case 0x03:
                {
                      display_str(13,1,"Wed");
                      break;
                }
                case 0x04:
                {
                      display_str(13,1,"Thu");
                      break;
                }
                case 0x05:
                {
                      display_str(13,1,"Fri");
                      break;
                }
                case 0x06:
                {
                      display_str(13,1,"Sat");
                      break;
                }
                case 0x07:
                {
                      display_str(13,1,"Sun");
                      break;
                }
        }
}

void ds_reset()
{
    ds = 1;
    ds = 0;
    delay_us(200);
    delay_us(200);    //Òª±£Ö¤480us~960us
    ds = 1;           //free ds
    delay_us(30);
    if(0 == ds)
    {
        ack = 1;
    }
    else
    {
        ack = 0;
    }
    delay_us(200);
    delay_us(100);    //¹ýÁËÄǶεÍ×ÜÏß
}

void ds_send_byte(unsigned char byte)
{
    unsigned char i;
    for(i = 0; i < 8; i++)
    {
        ds = 0;         //À­µÍ
        _nop_();        //1us
        _nop_();        //´óÓÚ1us
        ds = byte & 0x01; //ÏȲÙ×÷×îµÍλ
        byte >>= 1;
        delay_us(30);    //×îÉÙ60us
        ds = 1;          //ÔÙÀ­¸ß
    }
    delay_us(30);
}

bit ds_read_bit()
{
    bit tmp;
    ds = 1;
    ds = 0;
    _nop_();
    _nop_();
    ds = 1;
    tmp = ds;
    delay_us(30);      //×îÉÙ60us
    return tmp;
}

unsigned char ds_read_byte()
{
    unsigned char i,j,k;
    for(i = 0; i < 8; i++)
    {
        j = ds_read_bit();
        k = (j << 7) | (k >> 1);
    }
    return k;
}

void main()
{
      unsigned char a;
        unsigned int b,temp;
        float temperture;
        unsigned char disbuf[20];
      lcd_init();
      //ds1302_write_time();
        //ds1302_write_date();
      //ds1302_write_week();
        while(1)
        {
                ds1302_read_time();
              ds1302_read_date();
              ds1302_read_week();
                lcd_dis_time();
                lcd_dis_date();
              lcd_dis_week();

            ds_reset();
            ds_send_byte(0xcc);   //Ìø¹ý¶ÁROMµÄÃüÁî
            ds_send_byte(0x44);   //Æô¶¯Î¶Èת»»

            ds_reset();
            ds_send_byte(0xcc);   //Ìø¹ý¶ÁROMµÄÃüÁî
            ds_send_byte(0xbe);   

            a = ds_read_byte();   //µÍ×Ö½Ú
            b = ds_read_byte();   //¸ß×Ö½Ú
            temp = (b << 8) | a;
            temperture = (float)temp * 0.0625;
            sprintf(disbuf, "%7.3f", temperture);

            display_str(9,0,disbuf);
        }
}
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