DS1302在STM32中的应用.doc

#ifndef _Ds1302_h#define _Ds1302_h#include stm32f10x.h/=【DS1302接口宏定义】#define DS1302_SCLK(x)(x? GPIO_SetBits(GPIOB, GPIO_Pin_0): GPIO_ResetBits(GPIOB, GPIO_Pin_0)#define DS1302_OUTPUT(x)(x? GPIO_SetBits(GPIOC, GPIO_Pin_5): GPIO_ResetBits(GPIOC, GPIO_Pin_5)/DS1302_IO 输出宏定义#define DS1302_CE(x)(x? GPIO_SetBits(GPIOC, GPIO_Pin_4): GPIO_ResetBits(GPIOC, GPIO_Pin_4)#define DS1302_INPUT() GPIO_ReadInputDataBit(GPIOC, GPIO_Pin_5) /DS1302_IO 输入宏定义typedef struct u8 hour;u8 min;u8 sec;/公历日月年周u16 w_year;u8 w_month;u8 w_date;u8 week; tme; void Ds1302IO_Init(void);void Writeoneword_1302(u8 address,u8 shuju);u8 Readoneword_1302(u8 address);void Gettime_1302(void);void Settime_1302(u16 year,u8 month,u8 day,u8 hour,u8 minute);#endif/*=DS1302底层驱动函数，需要用到的函数有Ds1302IO_Init();Settime_1302(u16 year,u8 month,u8 day, u8 week, u8 hour,u8 minute);Gettime_1302(void);*/#include Ds1302.h#define Charge() Writeoneword_1302(0x90,0xa4)#define ENWrite() Writeoneword_1302(0x8e,0x00)#define DISWrite() Writeoneword_1302(0x8e,0x80)tme time;/*十进制数据转换为十六进制*/u8 ChangeTohex(u8 dat)u8 temp;temp=(dat/10)*16+dat%10;return temp;/*十六进制转换为十进制数据*/u8 ChangeToDec(u8 dat)u8 temp;temp=(dat/16)*10+dat%16;return temp;/*DS1302端口配置初始化*/void Ds1302IO_Init(void)/= DS1302接口初始化GPIO_InitTypeDef GPIO_InitStructure;GPIO_InitStructure.GPIO_Pin =GPIO_Pin_0; /PB0 -DS18B20_SCLKGPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP; /推挽输出GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;GPIO_Init(GPIOB, &GPIO_InitStructure);GPIO_InitStructure.GPIO_Pin =GPIO_Pin_4;/|GPIO_Pin_5; PC4-DS18B20_CE、PC5-DS18B20_IOGPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP; /推挽输出GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;GPIO_Init(GPIOC, &GPIO_InitStructure);/*写入一字节数据*/void Writeonechar_1302(u8 m)/向1302写一字节数据u8 i;for(i=0;i1;delay_ms(1);/*读取一字节数据*/u8 Readonechar_1302() u8 i,temp=0x00;for(i=0;i1;DS1302_SCLK(0);Delay(30);if(DS1302_INPUT()=1)temp=temp|0x80;DS1302_SCLK(1);Delay(30);return temp; /*从DS1302读取数据*/u8 Readoneword_1302(u8 address)u8 temp;GPIO_InitTypeDef GPIO_InitStructure; DS1302_SCLK(0);Delay(30);DS1302_CE(1);Delay(300);GPIO_InitStructure.GPIO_Pin =GPIO_Pin_5; /PC5 DS1302 数据接口GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP; /推挽输出GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;GPIO_Init(GPIOC, &GPIO_InitStructure);Writeonechar_1302(address);GPIO_InitStructure.GPIO_Pin =GPIO_Pin_5; /PC5 DS1302 数据接口GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPU; /上拉输入GPIO_Init(GPIOC, &GPIO_InitStructure);temp=Readonechar_1302();Delay(30);DS1302_SCLK(0);Delay(30);DS1302_CE(0);return temp;/*向DS1302写入数据*/void Writeoneword_1302(u8 address,u8 shuju)GPIO_InitTypeDef GPIO_InitStructure;DS1302_SCLK(0);Delay(30);DS1302_CE(1);GPIO_InitStructure.GPIO_Pin =GPIO_Pin_5; /PB0 -DS18B20_SCLKGPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP; /推挽输出GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;GPIO_Init(GPIOC, &GPIO_InitStructure);Writeonechar_1302(address);Writeonechar_1302(shuju);DS1302_SCLK(0);Delay(30);DS1302_CE(0);/*设置日期，时间，包括年，月，日，时，分，秒*/void Settime_1302(u16 year,u8 month,u8 day, u8 week, u8 hour,u8 minute) /*把数据转换为十六进制后写入DS1302*/year=ChangeTohex(year-2000); month=ChangeTohex(month);day=ChangeTohex(day);hour=ChangeTohex(hour);minute=ChangeTohex(minute);week=ChangeTohex(week);ENWrite();Writeoneword_1302(0x8c,year);Writeoneword_1302(0x88,month);Writeoneword_1302(0x86,day);Writeoneword_1302(0x8a,week);Writeoneword_1302(0x84,hour);Writeoneword_1302(0x82,minute);Writeoneword_1302(0x80,0x00);DISWrite();/*读取日期，时间，包括年，月，日，时，分，秒*/void Gettime_1302(void)/中间变量u8 buffer7;buffer6=Readoneword_1302(0x8d);/年份低两位buffer5=Readoneword_1302(0x89)&0x1f; /月份buffer4=Readoneword_1302(0x87)&0x3f;/日期buffer3=Readoneword_1302(0x8b)&0x3f;buffer2=Readoneword_1302(0x85)&0x1f;/时buffer1=Readoneword_1302(0x83)&0x7f;/分buffer0=Readoneword_1302(0x81)&0x7f; /秒/timer.w_year,timer.w_month,timer.w_date,timer.hour,timer.min,timer.sec/*将读取的十六进制数据转换为十进制数据*/time.w_year =ChangeToDec(b