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                         uint8_t Hour;
  20                         uint8_t Minute;
  21                         uint8_t Second;
  22                         uint8_t Day;
  23                         uint8_t Month;
  24                         uint8_t Year;
  25                 } TimeDate_t;
  26
  27                 typedef struct
  28                 {
  29                         union
  30                         {
  31                                 struct
  32                                 {
  33                                         unsigned int Sec            : 4;
  34                                         unsigned int TenSec         : 3;
  35                                         unsigned int CH             : 1;
  36                                 } Fields;
  37
  38                                 uint8_t IntVal;
  39                         } Byte1;
  40
  41                         union
  42                         {
  43                                 struct
  44                                 {
  45                                         unsigned int Min            : 4;
  46                                         unsigned int TenMin         : 3;
  47                                         unsigned int Reserved       : 1;
  48                                 } Fields;
  49
  50                                 uint8_t IntVal;
  51                         } Byte2;
  52
  53                         union
  54                         {
  55                                 struct
  56                                 {
  57                                         unsigned int Hour            : 4;
  58                                         unsigned int TenHour         : 2;
  59                                         unsigned int TwelveHourMode  : 1;
  60                                         unsigned int Reserved        : 1;
  61                                 } Fields;
  62
  63                                 uint8_t IntVal;
  64                         } Byte3;
  65                 } DS1307_TimeRegs_t;
  66
  67                 typedef struct
  68                 {
  69                         union
  70                         {
  71                                 struct
  72                                 {
  73                                         unsigned int Day             : 4;
  74                                         unsigned int TenDay          : 2;
  75                                         unsigned int Reserved        : 2;
  76                                 } Fields;
  77
  78                                 uint8_t IntVal;
  79                         } Byte1;
  80
  81                         union
  82                         {
  83                                 struct
  84                                 {
  85                                         unsigned int Month           : 4;
  86                                         unsigned int TenMonth        : 1;
  87                                         unsigned int Reserved        : 3;
  88                                 } Fields;
  89
  90                                 uint8_t IntVal;
  91                         } Byte2;
  92
  93                         union
  94                         {
  95                                 struct
  96                                 {
  97                                         unsigned int Year            : 4;
  98                                         unsigned int TenYear         : 4;
  99                                 } Fields;
 100
 101                                 uint8_t IntVal;
 102                         } Byte3;
 103                 } DS1307_DateRegs_t;
 104
 105         /* Macros: */
 106                 #define DS1307_ADDRESS_READ   (0xD0 | TWI_ADDRESS_READ)
 107                 #define DS1307_ADDRESS_WRITE  (0xD0 | TWI_ADDRESS_WRITE)
 108
 109         /* Function Prototypes: */
 110                 void DS1307_SetTimeDate(const TimeDate_t* NewTimeDate);
 111                 void DS1307_GetTimeDate(TimeDate_t* const TimeDate);
 112
 113 #endif
 114