1 /*

2 * DS1302.h

3 *

4 * Created on: 2013-11-27

5 * Author: Allen

6 */

7

8 #ifndef DS1302_H_

9 #define DS1302_H_

10

11 #include

12 #include "MyType.h"

13

14 //時(shí)間結(jié)構(gòu)體

15 typedef struct

16 {

17 uchar year; //00-99,前面自己加入20，比如讀出13為2013

18 uchar month;

19 uchar date;

20 uchar hour;

21 uchar min;

22 uchar sec;

23 uchar week;

24 }_calendar_obj;

25

26 extern _calendar_obj calendar; //日歷結(jié)構(gòu)體

27

28 #define delay_time 0

29 //DS1302地址定義

30 #define ds1302_sec_add 0x80 //秒數(shù)據(jù)地址

31 #define ds1302_min_add 0x82 //分?jǐn)?shù)據(jù)地址

32 #define ds1302_hr_add 0x84 //時(shí)數(shù)據(jù)地址

33 #define ds1302_date_add 0x86 //日數(shù)據(jù)地址

34 #define ds1302_month_add 0x88 //月數(shù)據(jù)地址

35 #define ds1302_day_add 0x8a //星期數(shù)據(jù)地址

36 #define ds1302_year_add 0x8c //年數(shù)據(jù)地址

37 #define ds1302_control_add 0x8e //控制數(shù)據(jù)地址

38 #define ds1302_charger_add 0x90

39 #define ds1302_clkburst_add 0xbe

40

41 //SCLK:P2.3

42 #define SCLK_DIR (P2DIR)

43 #define SCLK_OUT (P2OUT)

44 #define SCLK_REN (P2REN)

45 #define SCLK_PIN (BIT3)

46

47 #define SCLK_UP (Set_Bit(SCLK_REN,SCLK_PIN))

48 #define SCLK_DirOut (Set_Bit(SCLK_DIR,SCLK_PIN))

49 #define SCLK_H (Set_Bit(SCLK_OUT,SCLK_PIN))

50 #define SCLK_L (Clr_Bit(SCLK_OUT,SCLK_PIN))

51

52

53 //DS_SDA:P2.4

54 #define IO_DIR (P2DIR)

55 #define IO_OUT (P2OUT)

56 #define IO_IN (P2IN)

57 #define IO_REN (P2REN)

58 #define IO_PIN (BIT4)

59

60 #define IO_UP (Set_Bit(IO_REN,IO_PIN))

61 #define IO_DirOut (Set_Bit(IO_DIR,IO_PIN))

62 #define IO_H (Set_Bit(IO_OUT,IO_PIN))

63 #define IO_L (Clr_Bit(IO_OUT,IO_PIN))

64

65

66 #define IO_DirIn (Clr_Bit(IO_DIR,IO_PIN))

67 #define IO_Data (Get_Bit(IO_IN,IO_PIN))

68

69 //RST:P2.5

70 #define RST_DIR (P2DIR)

71 #define RST_OUT (P2OUT)

72 #define RST_IN (P2IN)

73 #define RST_REN (P2REN)

74 #define RST_PIN (BIT5)

75

76 #define RST_UP (Set_Bit(RST_REN,RST_PIN))

77 #define RST_DirOut (Set_Bit(RST_DIR,RST_PIN))

78 #define RST_H (Set_Bit(RST_OUT,RST_PIN))

79 #define RST_L (Clr_Bit(RST_OUT,RST_PIN))

80

81

82 void DS1302_Init(void);

83 static void delay_us( unsigned int k );

84 void ds1302_write_byte(uchar addr, uchar data);

85 uchar ds1302_read_byte(uchar addr);

86 void ds1302_write_time(uchar year,uchar month,uchar day,uchar hour,uchar min,uchar sec,uchar week);

87 void ds1302_read_time(void);

88 void ds1302_sendtime_uart(void);

89

90 #endif

1 /*

2 * DS1302.c

3 *

4 * Created on: 2013-11-29

5 * Author: Allen

6 */

7

8 #include "DS1302.h"

9 #include

10 #include "uart.h"

11

12 _calendar_obj calendar;

13

14 void DS1302_Init(void)

15 {

16 SCLK_DirOut;

17 RST_DirOut;

18 IO_DirOut;

19 SCLK_L;

20 RST_L;

21 delay_us(10);

22 SCLK_H;

23 }

24

25

26 static void delay_us( unsigned int k )

27 {

28 while(k--)

29 _nop();

30

31 }

32

33 //向DS1302寫入一字節(jié)數(shù)據(jù)

34 void ds1302_write_byte(uchar addr, uchar data)

35 {

36 uchar i;

37 IO_DirOut;

38 RST_H; //啟動(dòng)DS1302總線

39 //寫入目標(biāo)地址：addr

40 addr = addr & 0xFE; //最低位置零，寄存器0位為0時(shí)寫，為1時(shí)讀

41 for (i = 0; i < 8; i ++) {

42 if (addr & 0x01) {

43 IO_H;

44 }

45 else {

46 IO_L;

47 }

48 SCLK_H; //產(chǎn)生時(shí)鐘

49 delay_us(delay_time);

50 SCLK_L;

51 delay_us(delay_time);

52 addr = addr >> 1;

53 }

54 //寫入數(shù)據(jù)：d

55 for (i = 0; i < 8; i ++) {

56 if (data & 0x01) {

57 IO_H;

58 }

59 else {

60 IO_L;

61 }

62 SCLK_H; //產(chǎn)生時(shí)鐘

63 delay_us(delay_time);

64 SCLK_L;

65 delay_us(delay_time);

66 data = data >> 1;

67 }

68 RST_L; //停止DS1302總線

69 }

70

71 //從DS1302讀出一字節(jié)數(shù)據(jù)

72 uchar ds1302_read_byte(uchar addr)

73 {

74

75 uchar i,temp;

76 RST_H; //啟動(dòng)DS1302總線

77 //寫入目標(biāo)地址：addr

78 addr = addr | 0x01; //最低位置高，寄存器0位為0時(shí)寫，為1時(shí)讀

79 IO_DirOut;

80 for (i = 0; i < 8; i ++)

81 {

82 if (addr & 0x01)

83 {

84 IO_H;

85 }

86 else

87 {

88 IO_L;

89 }

90 SCLK_H; //產(chǎn)生時(shí)鐘

91 delay_us(delay_time);

92 SCLK_L;

93 delay_us(delay_time);

94 addr = addr >> 1;

95 }

96 //輸出數(shù)據(jù)：temp

97 IO_DirIn;

98 for (i = 0; i < 8; i ++)

99 {

100 temp = temp >> 1;

101 if (IO_Data)

102 // if( P2IN & BIT4)

103 {

104 temp |= 0x80;

105 }

106 else

107 {

108 temp &= 0x7F;

109 }

110 SCLK_H; //產(chǎn)生時(shí)鐘

111 delay_us(delay_time);

112 SCLK_L;

113 delay_us(delay_time);

114