/************************** Copyright (c) **********************************
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** FUZHOU FUGUANG ELECTRONICS Co.,LTD.
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** ¸£Öݸ£¹âµç×ÓÓÐÏÞ¹«Ë¾
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** http://www.fuguang.com
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**
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**-------------- File Info -------------------------------------------------
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** File name: DS1302_Driver.c
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** Last modified Date: 2008-11-16
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** Last Version: 1.0
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** Descriptions: DS1302 Drivers lib
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**
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**--------------------------------------------------------------------------
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** Created by: mxpopstar
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** Created date: 2008-11-16
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** Version: 1.0
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** Descriptions: The original version
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**
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**--------------------------------------------------------------------------
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** Modified by: mxpopstar
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** Modified date: 2008-11-20
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** Version:
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** Descriptions: DS1302 Drivers lib
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**
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***************************************************************************/
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//
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#include "DS1302_Driver.h"
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void InitIO_DS1302(void)
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{
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DDRB |= 0x70;
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RST_DS1302_0;//ÇåÁãRST
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SCLK_DS1302_0;
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_delay_ms(1);
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}
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//
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void Config_DS1302(void)
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{
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unsigned char temp;
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//----------- ³õʼ»¯DS1302 ------------------
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Ds1302_Write_Byte(0x8e,0x00);//¼Ä´æÆ÷ÔÊÐíдÈë
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temp=Ds1302_Read_Byte(0x81); //read second
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temp=((temp/16)*10+(temp%16));
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if(temp>59)
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{
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temp = 0;
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Ds1302_Write_Byte(0x80,temp); //write second
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}
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temp=Ds1302_Read_Byte(0x83); //read minute
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temp =((temp/16)*10+(temp%16));
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if(temp>59)
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{
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temp = 0;
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Ds1302_Write_Byte(0x82,temp); //write minute
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}
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temp =Ds1302_Read_Byte(0x85); //read hour
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temp=((temp/16)*10+(temp%16));
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if(temp>23)
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{
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temp = 0;
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Ds1302_Write_Byte(0x84,temp); //write hour
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}
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temp=Ds1302_Read_Byte(0x87); //read day
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temp=((temp/16)*10+(temp%16));
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if((temp<1)||(temp>31))
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{
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temp = 1;
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Ds1302_Write_Byte(0x86,temp); //write day
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}
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temp=Ds1302_Read_Byte(0x89); //read month
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temp=((temp/16)*10+(temp%16));
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if((temp<1)||(temp>12))
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{
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temp = 1;
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Ds1302_Write_Byte(0x88,temp); //write month
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}
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temp=Ds1302_Read_Byte(0x8b); //read week
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temp=((temp/16)*10+(temp%16));
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if((temp<1)||(temp>7))
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{
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temp = 1;
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Ds1302_Write_Byte(0x8a,temp); //write week
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}
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temp=Ds1302_Read_Byte(0x8d); //read year
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temp=((temp/16)*10+(temp%16));
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if((temp>99)||(temp<8))
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{
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temp = 9;
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Ds1302_Write_Byte(0x8c,temp); //write year
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}
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}
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//-------------------------------------------
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void SetDateTime(const Date_Time *datetime)
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{
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unsigned char temp = 0;
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temp = datetime->second/10*16 + datetime->second%10;
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Ds1302_Write_Byte(0x80,temp); //write second
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temp = datetime->minute/10*16 + datetime->minute%10;
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Ds1302_Write_Byte(0x82,temp); //write minute
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temp = datetime->hour/10*16 + datetime->hour%10;
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Ds1302_Write_Byte(0x84,temp); //write hour
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temp = datetime->day/10*16 + datetime->day%10;
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Ds1302_Write_Byte(0x86,temp); //write day
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temp = datetime->month/10*16 + datetime->month%10;
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Ds1302_Write_Byte(0x88,temp); //write month
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temp = datetime->year/10*16 + datetime->year%10;
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Ds1302_Write_Byte(0x8c,temp); //write year
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}
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//
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void GetDateTime(Date_Time *datetime)
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{
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unsigned char temp = 0;
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temp=Ds1302_Read_Byte(0x81);
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datetime->second = ((temp/16)*10+(temp%16));
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temp=Ds1302_Read_Byte(0x83);
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datetime->minute = ((temp/16)*10+(temp%16));
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temp =Ds1302_Read_Byte(0x85);
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datetime->hour = ((temp/16)*10+(temp%16));
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temp=Ds1302_Read_Byte(0x87);
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datetime->day = ((temp/16)*10+(temp%16));
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temp=Ds1302_Read_Byte(0x89);
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datetime->month = ((temp/16)*10+(temp%16));
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temp=Ds1302_Read_Byte(0x8d);
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datetime->year = ((temp/16)*10+(temp%16));
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}
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//-------------------------------------------
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void Ds1302_Write_Byte(const unsigned char command, const unsigned char data)
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{
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unsigned char n;
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IO_Direction_OUT; //ÉèÖÃIOÒý½ÅΪÊä³ö
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SCLK_DS1302_0; //SCLÇåÁã
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RST_DS1302_1; //ÖÃλRST
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_delay_us(2);
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for(n=0; n<8; n++)
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{
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if((command>>n) & 0x01)
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IO_DS1302_1;//SDAΪ"1"
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else
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IO_DS1302_0;//SDAΪ"0"
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SCLK_DS1302_1;//SCLÖÃλ
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SCLK_DS1302_0;//SCLÇåÁã
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}
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for(n=0; n<8; n++)
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{
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if((data>>n) & 0x01)
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IO_DS1302_1;//SDAΪ"1"
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else
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IO_DS1302_0;//SDAΪ"0"
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SCLK_DS1302_1;//SCLÖÃλ
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SCLK_DS1302_0;//SCLÇåÁã
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}
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RST_DS1302_0;//ÇåÁãRST
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SCLK_DS1302_0;
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}
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//
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unsigned char Ds1302_Read_Byte(const unsigned char command)
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{
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unsigned char n=0;
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unsigned char data=0;
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IO_Direction_OUT; //ÉèÖÃIOÒý½ÅΪÊä³ö
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SCLK_DS1302_0; //SCLÇåÁã
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RST_DS1302_1; //ÖÃλRST
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_delay_us(2);
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for(n=0; n<=7; n++)
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{
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if((command>>n) & 0x01)
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IO_DS1302_1;//SDAΪ"1"
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else
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IO_DS1302_0;//SDAΪ"0"
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SCLK_DS1302_1;//SCLÖÃλ
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SCLK_DS1302_0;//SCLÇåÁã
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}
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IO_Direction_IN; //ÉèÖÃIOÒý½ÅΪÊäÈë
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_delay_us(2);
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for(n=0; n<=7; n++)
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{
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SCLK_DS1302_1; //SCLÖÃλ
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if(Data_DS1302_1) //¶ÁÈ¡DS1302Êä³öµÄÊý¾Ý
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data += 0x80;
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if(n<7)
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data >>= 1;
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SCLK_DS1302_0; //SCLÇåÁã
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}
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SCLK_DS1302_0; //SCLÇåÁã
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RST_DS1302_0; //ÇåÁãRST
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IO_Direction_OUT; //»Ö¸´IOÒý½ÅΪÊä³ö
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return data;
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}
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//
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