ds1302_mega16._c

这是一个用温度计和时钟程序,芯片是ATmega16,电路稳定,绝对好用而且易懂

/****************************************
工	  程：DS1302实时时钟+DS18B20+1602液晶6线显示
创建日期：2007年3月30日
修改日期：2007年3月31日
创 建 人：朱海峰
邮    箱：[e-mail]
Q      Q: 543376422
*****************************************/
#include <iom16v.h>
#include <macros.h>
#include "def.h"
#include "LCD_1602_4wires.h"
#include "DS18B20.h"
/******************************************
PIN DEFINE:
/RST     PD6
SCLK	 PD4
IO		 PD5
******************************************/
/***************************************************************
COMMAND/ADDRESS FORMAT
	bit7    bit6    bit5    bit4    bit3    bit2    bit1    bit0
	 1		RAM/CK	 A4		 A3		 A2		 A1		 A0		R/W
***************************************************************/
//        second,mintue,hour,date,month,day,year,control,trickle charge,clock burst
//adderss:	 0	 	1	 2    3    4     5   6    7           8             9
/**************************************************************/

void Time_Init(const uint8_t *p_time);
void ChipInit(void);
void InitDS1302(void);
void TimeSet(void);
void ReadTime(void);
void DisplayTime(void);
void LCD_display_init(void);
void Display(uint8_t x, uint8_t y, uint8_t g_data);
void DS18B20(void);
//RAM_CLOCK=1,RAM操作;
//RAM_CLOCK=0,时钟日历操作;
unsigned char Read_DS1302(uint8_t RAM_CLOCK, uint8_t Address);
void Write(uint8_t RAM_CLOCK, uint8_t Address, uint8_t Dat); 	

/*******************************************/
//second,mintue,hour,date,month,day,year
const uint8_t Time[]={0x10,0x05,0x23,0x25,0x05,0x05,0x07};	
uint8_t Day[7][4]={{"Mon"},{"Tue"},{"Wed"},{"Thu"},{"Fri"},{"Sat"},{"Sun"}};
const uint8_t Number[]={'0','1','2','3','4','5','6','7','8','9'};
unsigned char g_year,g_month,g_date,g_day,g_hour,g_mintue,g_second;
//uint8_t g_tempeature;
/******************************************/
void main(void)
{
	 uint8_t   i;
	 ChipInit();
	 LCD_init();
	 InitDS1302();
	 Write(0,0x07,0x00);			//CLOCK操作，控制寄存器，解除写保护
	 //Time_Init(&Time[0]);			//初始化时间
	 LCD_display_init();
	 while(1)
	 {
	  	for(i=0;i<50;i++)
		{
		ReadTime();
		DisplayTime();
			if(i == 0)
			{
			 	 //BEEP_ON();
				 DS18B20();
				 //BEEP_OFF();
			}
		Delay_nms(100);
		} 	
	 }
}
/******************************************/
void ChipInit(void)
{
 	 NOP();
/*********************I/O口初始化**************************/	 
	 LCD_DATA_DDR |= LCD_DATA_MASK;			//液晶数据口线
     LCD_CONTROL_DDR |= RS|EN;				//
	 
	 DS1302_DDR |= RST|SCLK|IO;
	 DS1302_PORT = 0X00;
	 
	 DS18B20_DDR |= DS18B20_IO;
/*********************************************************/
}
/******************************************/
void InitDS1302(void)
{
 	 CLR_RST();
	 CLR_SCLK();
	 CLR_IO();
}
/****************************************/
void Time_Init(const uint8_t *p_time)
{
 	uint8_t i,ad=0;
	for(i=8;i>0;i--)
	{
	 	Write(0,ad,*p_time);
		ad++;
		p_time++;
	}
}
/******************************************/
void LCD_display_init(void)      
{
 	LCD_write_string(1,1,"20  .  .");
	LCD_write_string(3,2,":  :");
	LCD_set_xy(15,2);
	Units();
}
/******************************************/
void ReadTime(void)
{
 	uint8_t address;
	address = 0;
	g_second = Read_DS1302(0, address++);
	g_mintue = Read_DS1302(0, address++);
	g_hour = Read_DS1302(0, address++);
	g_date = Read_DS1302(0, address++);
	g_month = Read_DS1302(0, address++);
	g_day = Read_DS1302(0, address++);
	g_year = Read_DS1302(0, address);
}
/******************************************/
void DisplayTime(void)			
{
 	Display(3,1,g_year);
	Display(6,1,g_month);
	Display(9,1,g_date);
	Display(1,2,g_hour);
	Display(4,2,g_mintue);
	Display(7,2,g_second);
	LCD_write_string(14,1,&Day[(g_day-1)][0]);
}
/*******************************************/
void Display(uint8_t x, uint8_t y, uint8_t g_data) 
{
 	uint8_t temp_h,temp_l,m,n;
	temp_h = temp_l = g_data;
	temp_h &= 0xf0;
	temp_h >>= 4;
	temp_l &= 0x0f;
	m = x;
	n = y;
	LCD_set_xy(m,n);
	LCD_write_byte(0,Number[temp_h]);
	LCD_write_byte(0,Number[temp_l]);
}
/******************************************/
void Write(uint8_t RAM_CLOCK, uint8_t Address, uint8_t Dat)
{
 	uint8_t i,j,temp=0x80;
	temp &=~ 0x01;
	if(RAM_CLOCK == 1)
	{
	 	temp |= (1<<6);
	}
	else
	{
	 	temp &=~(1<<6);
	}
	Address <<= 1;
	temp |= Address;
	SET_RST();
	NOP();
	for(j=0; j<2; j++)
	{
	 	for(i=0; i<8; i++)
		{
	 	 	if((temp & 0x01) == 0)
			{
		 	 	CLR_IO();
			}
			else
			{
		 	 	SET_IO();
			}
			NOP();
			SET_SCLK();
			NOP();
			NOP();
			CLR_SCLK();
			NOP();
			CLR_IO();
			temp >>= 1;
		}
		temp = Dat;
	}
	CLR_IO();
	NOP();
	CLR_RST();
}
/******************************************/
unsigned char Read_DS1302(uint8_t RAM_CLOCK, uint8_t Address)
{
	uint8_t i,temp=0x80;
	temp |= 0x01;
	if(RAM_CLOCK == 1)
	{
	 	temp |= (1<<6);
	}
	else
	{
	 	temp &=~(1<<6);
	}
	Address <<= 1;
	temp |= Address;
	SET_RST();
	NOP();
	 for(i=0; i<7; i++)
	{
	 	 if((temp & 0x01) == 0)
		{
		 	CLR_IO();
		}
		else
		{
	 	 	SET_IO();
		}
		NOP();
		SET_SCLK();
		NOP();
		NOP();
		CLR_SCLK();
		NOP();
		CLR_IO();
		temp >>= 1;
	}
	SET_IO();
	NOP();
	SET_SCLK();
	SET_IO_INPUT();
	NOP();
	for(i=0; i<8; i++)
	{
	 	CLR_SCLK();
		NOP();
		if((IO_PIN & IO) == 0)
		{
		 	temp &= ~0x80;
		}
		else
		{
		 	temp |= 0x80;
		}
		//temp >>=1;
		if(i<7)
		{
		 	SET_SCLK();
			temp >>=1;
		}
		else
		{
		 	CLR_SCLK();
		}
		NOP();
		NOP();
	}	
	CLR_IO();
	NOP();
	CLR_RST();
	return (temp);
}
/******************************************/
void DS18B20(void)
{
 	uint8_t Th, Tl, i;
	i=Init_18b20();
	Write_1_byte(0xcc);
	Write_1_byte(0x44);
	Delay_nms(100);
	i=Init_18b20();
	Write_1_byte(0xcc);
	Write_1_byte(0xbe);
	Tl=Read_1_byte();
	Th=Read_1_byte();
	Temperature(Th,Tl);
	//Temperature(12,45);
	Delay_nms(100);
}
/*****************************************/