求助DS1302为什么会生成两个时间？

mybag1

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：

1. #include <DS1302.h>
   
2. DS1302 rtc(2, 5, 7);
   
3. void setup()
   
4. {
   
5. 
   
6.   rtc.halt(false);
   
7.   rtc.writeProtect(false);
   
8. 
   
9.   rtc.setDOW(SATURDAY);        // 设置星期
   
10.   rtc.setTime(22, 56,00);     //设置时间
    
11.   rtc.setDate(9, 11, 2013);   // 设置日期2013年11月9日
    
12.   rtc.writeProtect(true);
    
13.   Serial.begin(9600);
    
14. }
    
15. void loop()
    
16. {
    
17.   char * t=rtc.getTimeStr();
    
18.   char * d=rtc.getDateStr(FORMAT_LONG,FORMAT_BIGENDIAN, '-');
    
19.   char * w=rtc.getDOWStr(FORMAT_LONG);
    
20.   Serial.println(t);
    
21.   Serial.println(d);
    
22.   Serial.println(w);
    
23.   delay(1000);
    
24.   
    
25. }
    

复制代码

DS1302.h

1. /*
   
2.   DS1302.h - Arduino library support for the DS1302 Trickle Charge Timekeeping Chip
   
3.   Copyright (C)2010 Henning Karlsen. All right reserved
   
4.   
   
5.   You can find the latest version of the library at
   
6.   http://www.henningkarlsen.com/electronics
   
7. 
   
8.   This library has been made to easily interface and use the DS1302 RTC with
   
9.   the Arduino.
   
10. 
    
11.   If you make any modifications or improvements to the code, I would appreciate
    
12.   that you share the code with me so that I might include it in the next release.
    
13.   I can be contacted through http://www.henningkarlsen.com/electronics/contact.php
    
14. 
    
15.   This library is free software; you can redistribute it and/or
    
16.   modify it under the terms of the GNU Lesser General Public
    
17.   License as published by the Free Software Foundation; either
    
18.   version 2.1 of the License, or (at your option) any later version.
    
19. 
    
20.   This library is distributed in the hope that it will be useful,
    
21.   but WITHOUT ANY WARRANTY; without even the implied warranty of
    
22.   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
    
23.   Lesser General Public License for more details.
    
24. 
    
25.   You should have received a copy of the GNU Lesser General Public
    
26.   License along with this library; if not, write to the Free Software
    
27.   Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
    
28. */
    
29. #ifndef DS1302_h
    
30. #define DS1302_h
    
31. 
    
32. #if defined(ARDUINO) && ARDUINO >= 100
    
33.         #include "Arduino.h"
    
34. #else
    
35.         #include "WProgram.h"
    
36. #endif
    
37. 
    
38. #define FORMAT_SHORT        1
    
39. #define FORMAT_LONG        2
    
40. 
    
41. #define FORMAT_LITTLEENDIAN        1
    
42. #define FORMAT_BIGENDIAN        2
    
43. #define FORMAT_MIDDLEENDIAN        3
    
44. 
    
45. #define MONDAY                1
    
46. #define TUESDAY                2
    
47. #define WEDNESDAY        3
    
48. #define THURSDAY        4
    
49. #define FRIDAY                5
    
50. #define SATURDAY        6
    
51. #define SUNDAY                7
    
52. 
    
53. #define TCR_D1R2K        165
    
54. #define TCR_D1R4K        166
    
55. #define TCR_D1R8K        167
    
56. #define TCR_D2R2K        169
    
57. #define TCR_D2R4K        170
    
58. #define TCR_D2R8K        171
    
59. #define TCR_OFF                92
    
60. 
    
61. class Time
    
62. {
    
63. public:
    
64.         uint8_t                hour;
    
65.         uint8_t                min;
    
66.         uint8_t                sec;
    
67.         uint8_t                date;
    
68.         uint8_t                mon;
    
69.         uint16_t        year;
    
70.         uint8_t                dow;
    
71. 
    
72.                 Time();
    
73. };
    
74. 
    
75. class DS1302_RAM
    
76. {
    
77. public:
    
78.         byte        cell[31];
    
79. 
    
80.                 DS1302_RAM();
    
81. };
    
82. 
    
83. class DS1302
    
84. {
    
85. public:
    
86.                 DS1302(uint8_t ce_pin, uint8_t data_pin, uint8_t sclk_pin);
    
87.         Time        getTime();
    
88.         void        setTime(uint8_t hour, uint8_t min, uint8_t sec);
    
89.         void        setDate(uint8_t date, uint8_t mon, uint16_t year);
    
90.         void        setDOW(uint8_t dow);
    
91. 
    
92.         char        *getTimeStr(uint8_t format=FORMAT_LONG);
    
93.         char        *getDateStr(uint8_t slformat=FORMAT_LONG, uint8_t eformat=FORMAT_LITTLEENDIAN, char divider='.');
    
94.         char        *getDOWStr(uint8_t format=FORMAT_LONG);
    
95.         char        *getMonthStr(uint8_t format=FORMAT_LONG);
    
96. 
    
97.         void        halt(bool value);
    
98.         void        writeProtect(bool enable);
    
99.         void        setTCR(uint8_t value);
    
100. 
     
101.         void                writeBuffer(DS1302_RAM r);
     
102.         DS1302_RAM        readBuffer();
     
103.         void                poke(uint8_t addr, uint8_t value);
     
104.         uint8_t                peek(uint8_t addr);
     
105. 
     
106. private:
     
107.         uint8_t _ce_pin;
     
108.         uint8_t _data_pin;
     
109.         uint8_t _sclk_pin;
     
110.         uint8_t _burstArray[8];
     
111. 
     
112.         uint8_t        _readByte();
     
113.         void        _writeByte(uint8_t value);
     
114.         uint8_t        _readRegister(uint8_t reg);
     
115.         void         _writeRegister(uint8_t reg, uint8_t value);
     
116.         void        _burstRead();
     
117.         uint8_t        _decode(uint8_t value);
     
118.         uint8_t        _decodeH(uint8_t value);
     
119.         uint8_t        _decodeY(uint8_t value);
     
120.         uint8_t        _encode(uint8_t vaule);
     
121. };
     
122. #endif
     

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timer

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

zoologist

没遇到过 会不会是 rtc.writeProtect(); 导致的

mybag1

连线是没有问题的，我怀疑是我的1302坏了