DS1302操作模块.doc

C/*DS1302时钟芯片驱动函数DS1302是产品中最常用的时钟芯片，此文件中的代码可以嵌入项目中使用。*/#include #include /*复位脚*/#define RST_CLRPORTD &= (1 PD7)/*电平置低*/#define RST_SETPORTD |= (1 PD7)/*电平置高*/#define RST_INDDRD &= (1 PD7)/*方向输入*/#define RST_OUTDDRD |= (1 PD7)/*方向输出*/*双向数据*/#define IO_CLRPORTD &= (1 PD6)/*电平置低*/#define IO_SETPORTD |= (1 PD6)/*电平置高*/#define IO_RPIND & (1 PD6)/*电平读取*/#define IO_INDDRD &= (1 PD6)/*方向输入*/#define IO_OUTDDRD |= (1 PD6)/*方向输出*/*时钟信号*/#define SCK_CLRPORTD &= (1 PD5)/*时钟信号*/#define SCK_SETPORTD |= (1 PD5)/*电平置高*/#define SCK_INDDRD &= (1 PD5)/*方向输入*/#define SCK_OUTDDRD |= (1 PD5)/*方向输出*/#define ds1302_sec_add0x80/秒数据地址#define ds1302_min_add0x82/分数据地址#define ds1302_hr_add0x84/时数据地址#define ds1302_date_add0x86/日数据地址#define ds1302_month_add0x88/月数据地址#define ds1302_day_add0x8a/星期数据地址#define ds1302_year_add0x8c/年数据地址#define ds1302_control_add0x8e/控制数据地址#define ds1302_charger_add0x90 #define ds1302_clkburst_add0xbeUnsignedchartime_buf8= 0x20,0x12,0x03,0x21,0x10,0x20,0x55,0x03;/*向DS1302写入一字节数据*/void ds1302_write_byte(unsigned char addr, unsigned char d) unsigned char i; RST_SET;/*启动DS1302总线*/*写入目标地址：addr*/IO_OUT;addr = addr & 0xFE;/*最低位置零*/for (i = 0; i 1;/*写入数据：d*/IO_OUT;for (i = 0; i 1;RST_CLR;/*停止DS1302总线*/*从DS1302读出一字节数据*/unsigned char ds1302_read_byte(unsigned char addr) unsigned char i;unsigned char temp;RST_SET;/*启动DS1302总线*/*写入目标地址：addr*/IO_OUT;addr = addr | 0x01;/*最低位置高*/for (i = 0; i 1;/*输出数据：temp*/IO_IN;for (i = 0; i 1;if (IO_R) temp |= 0x80;else temp &= 0x7F;SCK_SET;SCK_CLR;RST_CLR;/*停止DS1302总线*/return temp;/*向DS302写入时钟数据*/void ds1302_write_time(void) ds1302_write_byte(ds1302_control_add,0x00);/关闭写保护 （即可写）ds1302_write_byte(ds1302_sec_add,0x80);/暂停 ds1302_write_byte(ds1302_charger_add,0xa9);/慢充电 ds1302_write_byte(ds1302_year_add,time_buf1);/年 ds1302_write_byte(ds1302_month_add,time_buf2);/月 ds1302_write_byte(ds1302_date_add,time_buf3);/日 ds1302_write_byte(ds1302_hr_add,time_buf4);/时 ds1302_write_byte(ds1302_min_add,time_buf5);/分ds1302_write_byte(ds1302_sec_add,time_buf6);/秒ds1302_write_byte(ds1302_day_add,time_buf7);/周 ds1302_write_byte(ds1302_control_add,0x80);/打开写保护 （不可写）/*从DS302读出时钟数据*/void ds1302_read_time(void) time_buf1=ds1302_read_byte(ds1302_year_add);/年 time_buf2=ds1302_read_byte(ds1302_month_add);/月 time_buf3=ds1302_read_byte(ds1302_date_add);/日 time_buf4=ds1302_read_byte(ds1302_hr_add);/时 time_buf5=ds1302_read_byte(ds1302_min_add);/分 time_buf6=(ds1302_read_byte(ds1302_sec_add)&0x7F;/秒 time_buf7=ds1302_read_byte(ds1302_day_add);/周 /*DS302初始化函数*/void ds1302_init(void) RST_CLR;/*RST脚置低*/SCK_CLR;/*SCK脚置低*/RST_OUT;/*RST脚设置为输出*/SCK_OUT;/*SCK脚设置为输出*/H#ifndef DS1302_H#define DS1302_Hextern unsigned char time_buf8;/秒、分