Add new tag for the LUFA-120219-BETA release.

[pub/USBasp.git] / Projects / TempDataLogger / Lib / DS1307.c

diff --git a/Projects/TempDataLogger/Lib/DS1307.c b/Projects/TempDataLogger/Lib/DS1307.c
index df45dda..459030f 100644 (file)
--- a/Projects/TempDataLogger/Lib/DS1307.c
+++ b/Projects/TempDataLogger/Lib/DS1307.c
@@ -1,5 +1,5 @@
 /*
 /*

-     Copyright (C) Dean Camera, 2010.
+     Copyright (C) Dean Camera, 2012.

 
   dean [at] fourwalledcubicle [dot] com
            www.lufa-lib.org
 
   dean [at] fourwalledcubicle [dot] com
            www.lufa-lib.org


@@ -7,127 +7,78 @@
 
 #include "DS1307.h"
 
 
 #include "DS1307.h"
 

-void DS1307_SetDate(const uint8_t Day,
-                    const uint8_t Month,
-                    const uint8_t Year)
+bool DS1307_SetTimeDate(const TimeDate_t* NewTimeDate)

 {
 #if defined(DUMMY_RTC)
 {
 #if defined(DUMMY_RTC)

-       return;
+       return true;

 #endif
 
 #endif
 

-       DS1307_DateRegs_t CurrentRTCDate;
-       CurrentRTCDate.Byte1.Fields.TenDay   = (Day / 10);
-       CurrentRTCDate.Byte1.Fields.Day      = (Day % 10);
-       CurrentRTCDate.Byte2.Fields.TenMonth = (Month / 10);
-       CurrentRTCDate.Byte2.Fields.Month    = (Month % 10);
-       CurrentRTCDate.Byte3.Fields.TenYear  = (Year / 10);
-       CurrentRTCDate.Byte3.Fields.Year     = (Year % 10);
-
-       if (TWI_StartTransmission(DS1307_ADDRESS_WRITE, 10))
+       DS1307_DateTimeRegs_t NewRegValues;
+       const uint8_t         WriteAddress = 0;
+
+       // Convert new time data to the DS1307's time register layout
+       NewRegValues.Byte1.Fields.TenSec    = (NewTimeDate->Second / 10);
+       NewRegValues.Byte1.Fields.Sec       = (NewTimeDate->Second % 10);
+       NewRegValues.Byte1.Fields.CH        = false;
+       NewRegValues.Byte2.Fields.TenMin    = (NewTimeDate->Minute / 10);
+       NewRegValues.Byte2.Fields.Min       = (NewTimeDate->Minute % 10);
+       NewRegValues.Byte3.Fields.TenHour   = (NewTimeDate->Hour / 10);
+       NewRegValues.Byte3.Fields.Hour      = (NewTimeDate->Hour % 10);
+       NewRegValues.Byte3.Fields.TwelveHourMode = false;
+
+       // Convert new date data to the DS1307's date register layout
+       NewRegValues.Byte4.Fields.DayOfWeek = 0;
+       NewRegValues.Byte5.Fields.TenDay    = (NewTimeDate->Day / 10);
+       NewRegValues.Byte5.Fields.Day       = (NewTimeDate->Day % 10);
+       NewRegValues.Byte6.Fields.TenMonth  = (NewTimeDate->Month / 10);
+       NewRegValues.Byte6.Fields.Month     = (NewTimeDate->Month % 10);
+       NewRegValues.Byte7.Fields.TenYear   = (NewTimeDate->Year / 10);
+       NewRegValues.Byte7.Fields.Year      = (NewTimeDate->Year % 10);
+
+       // Write the new Time and Date into the DS1307
+       if (TWI_WritePacket(DS1307_ADDRESS, 10, &WriteAddress, sizeof(WriteAddress),
+                          (uint8_t*)&NewRegValues, sizeof(DS1307_DateTimeRegs_t)) != TWI_ERROR_NoError)

        {
        {

-               TWI_SendByte(DS1307_DATEREG_START);
-               TWI_SendByte(CurrentRTCDate.Byte1.IntVal);
-               TWI_SendByte(CurrentRTCDate.Byte2.IntVal);
-               TWI_SendByte(CurrentRTCDate.Byte3.IntVal);
-
-               TWI_StopTransmission();
+               return false;

        }
        }

-}
-
-void DS1307_SetTime(const uint8_t Hour,
-                    const uint8_t Minute,
-                    const uint8_t Second)
-{
-#if defined(DUMMY_RTC)
-       return;
-#endif

 
 

-       DS1307_TimeRegs_t CurrentRTCTime;
-       CurrentRTCTime.Byte1.Fields.TenSec  = (Second / 10);
-       CurrentRTCTime.Byte1.Fields.Sec     = (Second % 10);
-       CurrentRTCTime.Byte1.Fields.CH      = false;
-       CurrentRTCTime.Byte2.Fields.TenMin  = (Minute / 10);
-       CurrentRTCTime.Byte2.Fields.Min     = (Minute % 10);
-       CurrentRTCTime.Byte3.Fields.TenHour = (Hour / 10);
-       CurrentRTCTime.Byte3.Fields.Hour    = (Hour % 10);
-       CurrentRTCTime.Byte3.Fields.TwelveHourMode = false;
-
-       if (TWI_StartTransmission(DS1307_ADDRESS_WRITE, 10))
-       {
-               TWI_SendByte(DS1307_TIMEREG_START);
-               TWI_SendByte(CurrentRTCTime.Byte1.IntVal);
-               TWI_SendByte(CurrentRTCTime.Byte2.IntVal);
-               TWI_SendByte(CurrentRTCTime.Byte3.IntVal);
-
-               TWI_StopTransmission();
-       }
+       return true;

 }
 
 }
 

-void DS1307_GetDate(uint8_t* const Day,
-                    uint8_t* const Month,
-                    uint8_t* const Year)
+bool DS1307_GetTimeDate(TimeDate_t* const TimeDate)

 {
 #if defined(DUMMY_RTC)
 {
 #if defined(DUMMY_RTC)

-       *Day   = 1;
-       *Month = 1;
-       *Year  = 1;
-       return;
-#endif
-
-       if (TWI_StartTransmission(DS1307_ADDRESS_WRITE, 10))
-       {
-               TWI_SendByte(DS1307_DATEREG_START);
-
-               TWI_StopTransmission();
-       }
-
-       DS1307_DateRegs_t CurrentRTCDate;
-
-       if (TWI_StartTransmission(DS1307_ADDRESS_READ, 10))
-       {
-               TWI_ReceiveByte(&CurrentRTCDate.Byte1.IntVal, false);
-               TWI_ReceiveByte(&CurrentRTCDate.Byte2.IntVal, false);
-               TWI_ReceiveByte(&CurrentRTCDate.Byte3.IntVal, true);
+       TimeDate->Hour   = 1;
+       TimeDate->Minute = 1;
+       TimeDate->Second = 1;

 
 

-               TWI_StopTransmission();
-       }
-
-       *Day    = (CurrentRTCDate.Byte1.Fields.TenDay   * 10) + CurrentRTCDate.Byte1.Fields.Day;
-       *Month  = (CurrentRTCDate.Byte2.Fields.TenMonth * 10) + CurrentRTCDate.Byte2.Fields.Month;
-       *Year   = (CurrentRTCDate.Byte3.Fields.TenYear  * 10) + CurrentRTCDate.Byte3.Fields.Year;
-}
+       TimeDate->Day    = 1;
+       TimeDate->Month  = 1;
+       TimeDate->Year   = 1;

 
 

-void DS1307_GetTime(uint8_t* const Hour,
-                    uint8_t* const Minute,
-                    uint8_t* const Second)
-{
-#if defined(DUMMY_RTC)
-       *Hour   = 1;
-       *Minute = 1;
-       *Second = 1;
-       return;
+       return true;

 #endif
 
 #endif
 

-       if (TWI_StartTransmission(DS1307_ADDRESS_WRITE, 10))
-       {
-               TWI_SendByte(DS1307_TIMEREG_START);
+       DS1307_DateTimeRegs_t CurrentRegValues;
+       const uint8_t         ReadAddress = 0;

 
 

-               TWI_StopTransmission();
+       // Read in the stored Time and Date from the DS1307
+       if (TWI_ReadPacket(DS1307_ADDRESS, 10, &ReadAddress, sizeof(ReadAddress),
+                          (uint8_t*)&CurrentRegValues, sizeof(DS1307_DateTimeRegs_t)) != TWI_ERROR_NoError)
+       {
+               return false;

        }
 
        }
 

-       DS1307_TimeRegs_t CurrentRTCTime;
+       // Convert stored time value into decimal
+       TimeDate->Second  = (CurrentRegValues.Byte1.Fields.TenSec  * 10) + CurrentRegValues.Byte1.Fields.Sec;
+       TimeDate->Minute  = (CurrentRegValues.Byte2.Fields.TenMin  * 10) + CurrentRegValues.Byte2.Fields.Min;
+       TimeDate->Hour    = (CurrentRegValues.Byte3.Fields.TenHour * 10) + CurrentRegValues.Byte3.Fields.Hour;

 
 

-       if (TWI_StartTransmission(DS1307_ADDRESS_READ, 10))
-       {
-               TWI_ReceiveByte(&CurrentRTCTime.Byte1.IntVal, false);
-               TWI_ReceiveByte(&CurrentRTCTime.Byte2.IntVal, false);
-               TWI_ReceiveByte(&CurrentRTCTime.Byte3.IntVal, true);
-
-               TWI_StopTransmission();
-       }
+       // Convert stored date value into decimal
+       TimeDate->Day    = (CurrentRegValues.Byte5.Fields.TenDay   * 10) + CurrentRegValues.Byte5.Fields.Day;
+       TimeDate->Month  = (CurrentRegValues.Byte6.Fields.TenMonth * 10) + CurrentRegValues.Byte6.Fields.Month;
+       TimeDate->Year   = (CurrentRegValues.Byte7.Fields.TenYear  * 10) + CurrentRegValues.Byte7.Fields.Year;

 
 

-       *Second  = (CurrentRTCTime.Byte1.Fields.TenSec  * 10) + CurrentRTCTime.Byte1.Fields.Sec;
-       *Minute  = (CurrentRTCTime.Byte2.Fields.TenMin  * 10) + CurrentRTCTime.Byte2.Fields.Min;
-       *Hour    = (CurrentRTCTime.Byte3.Fields.TenHour * 10) + CurrentRTCTime.Byte3.Fields.Hour;
+       return true;

 }
 
 }