Projects/TempDataLogger/Lib/DS1307.h

   1 /*
   2      Copyright (C) Dean Camera, 2011.
   3
   4   dean [at] fourwalledcubicle [dot] com
   5            www.lufa-lib.org
   6 */
   7
   8 #ifndef _DS1307_H_
   9 #define _DS1307_H_
  10
  11         /* Includes: */
  12                 #include <avr/io.h>
  13
  14                 #include <LUFA/Drivers/Peripheral/TWI.h>
  15
  16         /* Type Defines: */
  17                 typedef struct
  18                 {
  19                         union
  20                         {
  21                                 struct
  22                                 {
  23                                         unsigned int Sec            : 4;
  24                                         unsigned int TenSec         : 3;
  25                                         unsigned int CH             : 1;
  26                                 } Fields;
  27
  28                                 uint8_t IntVal;
  29                         } Byte1;
  30
  31                         union
  32                         {
  33                                 struct
  34                                 {
  35                                         unsigned int Min            : 4;
  36                                         unsigned int TenMin         : 3;
  37                                         unsigned int Reserved       : 1;
  38                                 } Fields;
  39
  40                                 uint8_t IntVal;
  41                         } Byte2;
  42
  43                         union
  44                         {
  45                                 struct
  46                                 {
  47                                         unsigned int Hour            : 4;
  48                                         unsigned int TenHour         : 2;
  49                                         unsigned int TwelveHourMode  : 1;
  50                                         unsigned int Reserved        : 1;
  51                                 } Fields;
  52
  53                                 uint8_t IntVal;
  54                         } Byte3;
  55                 } DS1307_TimeRegs_t;
  56
  57                 typedef struct
  58                 {
  59                         union
  60                         {
  61                                 struct
  62                                 {
  63                                         unsigned int Day             : 4;
  64                                         unsigned int TenDay          : 2;
  65                                         unsigned int Reserved        : 2;
  66                                 } Fields;
  67
  68                                 uint8_t IntVal;
  69                         } Byte1;
  70
  71                         union
  72                         {
  73                                 struct
  74                                 {
  75                                         unsigned int Month           : 4;
  76                                         unsigned int TenMonth        : 1;
  77                                         unsigned int Reserved        : 3;
  78                                 } Fields;
  79
  80                                 uint8_t IntVal;
  81                         } Byte2;
  82
  83                         union
  84                         {
  85                                 struct
  86                                 {
  87                                         unsigned int Year            : 4;
  88                                         unsigned int TenYear         : 4;
  89                                 } Fields;
  90
  91                                 uint8_t IntVal;
  92                         } Byte3;
  93                 } DS1307_DateRegs_t;
  94
  95         /* Macros: */
  96                 #define DS1307_TIMEREG_START  0x00
  97                 #define DS1307_DATEREG_START  0x04
  98
  99                 #define DS1307_ADDRESS_READ   (0xD0 | TWI_ADDRESS_READ)
 100                 #define DS1307_ADDRESS_WRITE  (0xD0 | TWI_ADDRESS_WRITE)
 101
 102         /* Function Prototypes: */
 103                 void DS1307_SetDate(const uint8_t Day,
 104                                     const uint8_t Month,
 105                                     const uint8_t Year);
 106                 void DS1307_SetTime(const uint8_t Hour,
 107                                     const uint8_t Minute,
 108                                     const uint8_t Second);
 109                 void DS1307_GetDate(uint8_t* const Day,
 110                                     uint8_t* const Month,
 111                                     uint8_t* const Year);
 112                 void DS1307_GetTime(uint8_t* const Hour,
 113                                     uint8_t* const Minute,
 114                                     uint8_t* const Second);
 115
 116 #endif
 117