时钟1302.doc

#include #include #define DS1302_W_ADDR 0xBE#define DS1302_R_ADDR 0xBF#define KEY_DELAY 200 / 按键扫描延时/键值typedef unsigned char uint8;typedef unsigned int uint16;typedef unsigned long uint32;typedef char int8;typedef int int16;typedef long int32;/ DS1302sbit SCK = P17;/时钟sbit SDA = P23;/数据sbit RST = P13; /DS1302复位(片选)sbit key0=P30;sbit key1=P31;sbit key2=P32;sbit key3=P33;void delay(uint16 cnt);void delay1(uint16 del)uint16 x,y;for(x=0;xdel;x+)for(y=0;y148;y+);code uint8 Ledcode14=0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90,0xff,0xbf,0x86,0x00;uint8 Time7=55,59,11,22,2,2,11;/秒分时日月周年10-08-15 11:59:55uint8 Led_buf6;uint8 Num=0, Led_n=0, T_n=0,min=0;bit flag;bit Wow;void delay(uint16 n)while (n-);/* * 初始化系统定时器*/void write_ds1302_byte(uint8 dat) uint8 i;for (i=0;i= 1;SCK = 0;/* * 读一个字节*/uint8 read_ds1302_byte(void) uint8 i, dat=0;for (i=0;i= 1;if (SDA)dat |= 0x80;SCK = 1;SCK = 0; return dat;void reset_ds1302(void)RST = 0;SCK = 0;RST = 1;/* * 清除写保护*/void clear_ds1302_WP(void) reset_ds1302();RST = 1;write_ds1302_byte(0x8E);write_ds1302_byte(0);SDA = 0;RST = 0;/* * 设置写保护*/void set_ds1302_WP(void) reset_ds1302();RST = 1;write_ds1302_byte(0x8E);write_ds1302_byte(0x80);SDA = 0;RST = 0;/* * 设定时钟数据*/void set_time(uint8 *timedata)uint8 i, tmp;for (i=0; i7; i+) / 转化为BCD格式tmp = timedatai / 10;timedatai = timedatai % 10;timedatai = timedatai + tmp*16;clear_ds1302_WP();reset_ds1302();RST = 1;write_ds1302_byte(DS1302_W_ADDR);for (i=0; i7; i+)write_ds1302_byte(timedatai);delay(10);write_ds1302_byte(0);SDA = 0;RST = 0;set_ds1302_WP();/* * 读时钟数据*/void read_time(uint8 *timedata)uint8 i, tmp;clear_ds1302_WP();reset_ds1302();RST = 1;write_ds1302_byte(DS1302_R_ADDR);for (i=0; i7; i+)timedatai = read_ds1302_byte();delay(10);SDA = 0;RST = 0;set_ds1302_WP();for (i=0; i= 7)Led_n = 0;elseLed_n+; void set_clock(void)if (key0 = 0)delay1(3);if (key0 = 0) delay1(3);while(!key0);if(min=2) Time2+;if(Time2=24)Time2=0;if(min=1)Time1+;if(Time1=60)Time1=0;set_time(Time);if (key1= 0)delay1(3);if (key1= 0) delay1(3);while(!key1);if(min=2) if(Time2=0)Time2=24; Time2-; if(min=1) if(Time1=0) Time1=60; Time1-; set_time(Time); void gai()if (key2 = 0)delay(KEY_DELAY);if (key2 = 0)while(!key2); min+; if(min=3) min=0; while(min=1) read_time(Time); flash1(flag); show_time(Led_buf); set_clock(); if(key2=0) break; while(min=2) read_time(Time); flash2(flag); show_time(Led_buf); set_clock(); if(key2=0) break; while(min=0) read_time(Time); make_led_number(); show_time(Led_buf); set_clock(); if(key2=0) break; void main()systimer_init();set_time(Time); /初始时间设定 while (1)read_time(Time);make_led_nu