上程序:
#include "ds1302.h"
//#include "delay.h"
//3õê¼»ˉ걼䶨òå
u8 time_buf[8] = {0x20,0x17,0x01,0x01,0x23,0x59,0x55,0x02}; //3õê¼ê±¼ä2010Äê6ÔÂ1oÅ23μã59·Ö55Ãë DÇÆú¶t
extern u8 Year,Mon,Day,Hour,Min,Sec;
void delay_us(unsigned int x)
{
unsigned int i,j;
for(i=0;i<x;i++)
for(j=0;j<20;j++);
}
//DS13023õê¼»ˉ
void DS1302_Init(void)
{
GPIO_InitTypeDef GPIO_InitStructure;
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA, ENABLE);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_4 | GPIO_Pin_5 |GPIO_Pin_6;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init(GPIOA, &GPIO_InitStructure);
GPIO_SetBits(GPIOA, GPIO_Pin_4); //PA4à-¸ß
GPIO_ResetBits(GPIOA, GPIO_Pin_5 | GPIO_Pin_6); //PA5£¬PA6ÖÃμí
}
//ÏòDS1302D′èëò»¸ö×Ö½úêy¾Y
void DS1302_Write_Byte(u8 addr, u8 data)
{
u8 i;
DS1302_RST_L; //í£Ö1DS1302×üÏß
delay_us(10);
DS1302_RST_H; //Æô¶ˉDS1302×üÏß
addr = addr & 0xFE; //×îμíλÖÃá㣬D′êy¾Y
DS1302_IO_OUT();
for(i = 0; i < 8; i ++) //D′μØÖ·
{
if (addr & 0x01)
DS1302_DATA_OUT_H;
else
DS1302_DATA_OUT_L;
DS1302_SCK_H; //2úéúê±Öó
delay_us(10);
DS1302_SCK_L;
addr = addr>>1;
}
for (i = 0; i < 8; i ++) //D′êy¾Y
{
if(data & 0x01)
DS1302_DATA_OUT_H;
else
DS1302_DATA_OUT_L;
DS1302_SCK_H; //2úéúê±Öó
delay_us(10);
DS1302_SCK_L;
data = data>>1;
}
DS1302_RST_L; //í£Ö1DS1302×üÏß
}
//′óDS1302¶á3öò»¸ö×Ö½úêy¾Y
u8 DS1302_Read_Byte(u8 addr)
{
u8 i,temp;
DS1302_RST_L; //í£Ö1DS1302×üÏß
delay_us(10);
DS1302_RST_H; //Æô¶ˉDS1302×üÏß
addr = addr | 0x01; //×îμíλÖøߣ¬¶áêy¾Y
DS1302_IO_OUT();
for(i = 0; i < 8; i ++) //D′μØÖ·
{
if (addr & 0x01)
DS1302_DATA_OUT_H;
else
DS1302_DATA_OUT_L;
DS1302_SCK_H; //2úéúê±Öó
delay_us(10);
DS1302_SCK_L;
addr = addr>>1;
}
DS1302_IO_IN();
for (i = 0; i < 8; i ++) //¶áêy¾Y
{
temp = temp >> 1;
if(DS1302_DATA_IN==1)
temp |= 0x80;
else
temp &= 0x7F;
DS1302_SCK_H; //2úéúê±Öó
delay_us(10);
DS1302_SCK_L;
}
DS1302_RST_L; //í£Ö1DS1302×üÏß
return temp;
}
//ÏòDS1302D′èëê±¼äêy¾Y
void DS1302_Write_Time(void)
{
DS1302_Write_Byte(ds1302_control_add, 0x00); //1رÕD′±£»¤
DS1302_Write_Byte(ds1302_sec_add, 0x80); //ÔYí£ê±Öó
//DS1302_Write_Byte(ds1302_charger_add, 0xA9); //ä¸á÷3äμç
DS1302_Write_Byte(ds1302_year_add,time_buf[1]); //Äê
DS1302_Write_Byte(ds1302_month_add,time_buf[2]); //ÔÂ
DS1302_Write_Byte(ds1302_date_add,time_buf[3]); //èÕ
DS1302_Write_Byte(ds1302_hr_add,time_buf[4]); //ê±
DS1302_Write_Byte(ds1302_min_add,time_buf[5]); //·Ö
DS1302_Write_Byte(ds1302_sec_add,time_buf[6]); //Ãë
DS1302_Write_Byte(ds1302_day_add,time_buf[7]); //Öü
DS1302_Write_Byte(ds1302_control_add,0x80); //′ò¿aD′±£»¤
}
//ÏòDS1302D′èëèÕÆúêy¾Y
void DS1302_Write_Date(void)
{
Year=((Year/10)<<4)+((Year%10)&0x0f);
Mon=((Mon/10)<<4)+((Mon%10)&0x0f);
Day=((Day/10)<<4)+((Day%10)&0x0f);
Hour=((Hour/10)<<4)+((Hour%10)&0x0f);
Min=((Min/10)<<4)+((Min%10)&0x0f);
Sec=((Sec/10)<<4)+((Sec%10)&0x0f);
DS1302_Write_Byte(ds1302_control_add, 0x00); //1رÕD′±£»¤
DS1302_Write_Byte(ds1302_sec_add, 0x80); //ÔYí£ê±Öó
//DS1302_Write_Byte(ds1302_charger_add, 0xA9); //ä¸á÷3äμç
DS1302_Write_Byte(ds1302_year_add,Year); //Äê
DS1302_Write_Byte(ds1302_month_add,Mon); //ÔÂ
DS1302_Write_Byte(ds1302_date_add,Day); //èÕ
DS1302_Write_Byte(ds1302_hr_add,Hour); //ê±
DS1302_Write_Byte(ds1302_min_add,Min); //·Ö
DS1302_Write_Byte(ds1302_sec_add,Sec); //Ãë
DS1302_Write_Byte(ds1302_day_add,time_buf[7]); //Öü
DS1302_Write_Byte(ds1302_control_add,0x80); //′ò¿aD′±£»¤
}
//′óDS302¶á3öê±Öóêy¾Y
void DS1302_Read_Time(void)
{
time_buf[1] = DS1302_Read_Byte(ds1302_year_add); //Äê
time_buf[2] = DS1302_Read_Byte(ds1302_month_add); //ÔÂ
time_buf[3] = DS1302_Read_Byte(ds1302_date_add); //èÕ
time_buf[4] = DS1302_Read_Byte(ds1302_hr_add); //ê±
time_buf[5] = DS1302_Read_Byte(ds1302_min_add); //·Ö
time_buf[6] = (DS1302_Read_Byte(ds1302_sec_add))&0x7f; //Ã룬Æá±ÎÃëμÄμú7룬±üÃa3¬3ö59
time_buf[7] = DS1302_Read_Byte(ds1302_day_add); //Öü
}
//DS1302ÏòéÏ2ã·μ»Øê±¼äêy¾Y
void DS1302_Get_Time(u8 *time)
{
DS1302_Read_Time();
time[0]=(time_buf[0]>>4); //Äê
time[1]=(time_buf[0]&0x0f);
time[2]=(time_buf[1]>>4);
time[3]=(time_buf[1]&0x0f);
time[4]=(time_buf[2]>>4); //ÔÂ
time[5]=(time_buf[2]&0x0f);
time[6]=(time_buf[3]>>4); //èÕ
time[7]=(time_buf[3]&0x0f);
time[8]=(time_buf[7]&0x07); //DÇÆú
time[9]=(time_buf[4]>>4); //ê±
time[10]=(time_buf[4]&0x0f);
time[11]=(time_buf[5]>>4); //·Ö
time[12]=(time_buf[5]&0x0f);
time[13]=(time_buf[6]>>4); //Ãë
time[14]=(time_buf[6]&0x0f);
}
原来走的,后来用DS1302_Write_Date()这个程序设置了一下,就不走了。
用DS1302_Write_Time()再设置也不行。高手支招,谢谢!
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Sec&=0x7f
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