求助DS1302为什么会生成两个时间？
今天用DS1302做个时钟，可是设置好时间后，会不停的显示两个时间，一会儿是正常的2014年＊＊＊＊时间，一会儿显示2010－09－09 ＊＊＊错误的时间，这是怎么回事？=======================
2014-12-13
22:22:09
2010-09-09
01:14:03
2014-12-13
22:22:11
2010-09-09
01:14:04
======================
代码：
#include <DS1302.h>
DS1302 rtc(2, 5, 7);
void setup()
{
rtc.halt(false);
rtc.writeProtect(false);
rtc.setDOW(SATURDAY); // 设置星期
rtc.setTime(22, 56,00); //设置时间
rtc.setDate(9, 11, 2013); // 设置日期2013年11月9日
rtc.writeProtect(true);
Serial.begin(9600);
}
void loop()
{
char * t=rtc.getTimeStr();
char * d=rtc.getDateStr(FORMAT_LONG,FORMAT_BIGENDIAN, '-');
char * w=rtc.getDOWStr(FORMAT_LONG);
Serial.println(t);
Serial.println(d);
Serial.println(w);
delay(1000);
}
DS1302.h
/*
DS1302.h - Arduino library support for the DS1302 Trickle Charge Timekeeping Chip
Copyright (C)2010 Henning Karlsen. All right reserved
You can find the latest version of the library at
http://www.henningkarlsen.com/electronics
This library has been made to easily interface and use the DS1302 RTC with
the Arduino.
If you make any modifications or improvements to the code, I would appreciate
that you share the code with me so that I might include it in the next release.
I can be contacted through http://www.henningkarlsen.com/electronics/contact.php
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA02110-1301USA
*/
#ifndef DS1302_h
#define DS1302_h
#if defined(ARDUINO) && ARDUINO >= 100
#include "Arduino.h"
#else
#include "WProgram.h"
#endif
#define FORMAT_SHORT 1
#define FORMAT_LONG 2
#define FORMAT_LITTLEENDIAN 1
#define FORMAT_BIGENDIAN 2
#define FORMAT_MIDDLEENDIAN 3
#define MONDAY 1
#define TUESDAY 2
#define WEDNESDAY 3
#define THURSDAY 4
#define FRIDAY 5
#define SATURDAY 6
#define SUNDAY 7
#define TCR_D1R2K 165
#define TCR_D1R4K 166
#define TCR_D1R8K 167
#define TCR_D2R2K 169
#define TCR_D2R4K 170
#define TCR_D2R8K 171
#define TCR_OFF 92
class Time
{
public:
uint8_t hour;
uint8_t min;
uint8_t sec;
uint8_t date;
uint8_t mon;
uint16_t year;
uint8_t dow;
Time();
};
class DS1302_RAM
{
public:
byte cell;
DS1302_RAM();
};
class DS1302
{
public:
DS1302(uint8_t ce_pin, uint8_t data_pin, uint8_t sclk_pin);
Time getTime();
void setTime(uint8_t hour, uint8_t min, uint8_t sec);
void setDate(uint8_t date, uint8_t mon, uint16_t year);
void setDOW(uint8_t dow);
char *getTimeStr(uint8_t format=FORMAT_LONG);
char *getDateStr(uint8_t slformat=FORMAT_LONG, uint8_t eformat=FORMAT_LITTLEENDIAN, char divider='.');
char *getDOWStr(uint8_t format=FORMAT_LONG);
char *getMonthStr(uint8_t format=FORMAT_LONG);
void halt(bool value);
void writeProtect(bool enable);
void setTCR(uint8_t value);
void writeBuffer(DS1302_RAM r);
DS1302_RAM readBuffer();
void poke(uint8_t addr, uint8_t value);
uint8_t peek(uint8_t addr);
private:
uint8_t _ce_pin;
uint8_t _data_pin;
uint8_t _sclk_pin;
uint8_t _burstArray;
uint8_t _readByte();
void _writeByte(uint8_t value);
uint8_t _readRegister(uint8_t reg);
void _writeRegister(uint8_t reg, uint8_t value);
void _burstRead();
uint8_t _decode(uint8_t value);
uint8_t _decodeH(uint8_t value);
uint8_t _decodeY(uint8_t value);
uint8_t _encode(uint8_t vaule);
};
#endif
本帖最后由 timer 于 2014-12-14 05:16 编辑
确认接线和1302有无故障
依程式码应该依序秀时间,日期,星期
没遇到过 会不会是 rtc.writeProtect(); 导致的 连线是没有问题的，我怀疑是我的1302坏了:L
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