#include "DS1307.h"
-void DS1307_SetTimeDate(const TimeDate_t* NewTimeDate)
+bool DS1307_SetTimeDate(const TimeDate_t* NewTimeDate)
{
#if defined(DUMMY_RTC)
- return;
+ return true;
#endif
- DS1307_TimeRegs_t CurrentRTCTime;
- DS1307_DateRegs_t CurrentRTCDate;
+ DS1307_DateTimeRegs_t NewRegValues;
+ const uint8_t WriteAddress = 0;
// Convert new time data to the DS1307's time register layout
- CurrentRTCTime.Byte1.Fields.TenSec = (NewTimeDate->Second / 10);
- CurrentRTCTime.Byte1.Fields.Sec = (NewTimeDate->Second % 10);
- CurrentRTCTime.Byte1.Fields.CH = false;
- CurrentRTCTime.Byte2.Fields.TenMin = (NewTimeDate->Minute / 10);
- CurrentRTCTime.Byte2.Fields.Min = (NewTimeDate->Minute % 10);
- CurrentRTCTime.Byte3.Fields.TenHour = (NewTimeDate->Hour / 10);
- CurrentRTCTime.Byte3.Fields.Hour = (NewTimeDate->Hour % 10);
- CurrentRTCTime.Byte3.Fields.TwelveHourMode = false;
+ 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
- CurrentRTCDate.Byte1.Fields.TenDay = (NewTimeDate->Day / 10);
- CurrentRTCDate.Byte1.Fields.Day = (NewTimeDate->Day % 10);
- CurrentRTCDate.Byte2.Fields.TenMonth = (NewTimeDate->Month / 10);
- CurrentRTCDate.Byte2.Fields.Month = (NewTimeDate->Month % 10);
- CurrentRTCDate.Byte3.Fields.TenYear = (NewTimeDate->Year / 10);
- CurrentRTCDate.Byte3.Fields.Year = (NewTimeDate->Year % 10);
+ 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);
- if (TWI_StartTransmission(DS1307_ADDRESS_WRITE, 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)
{
- // Must start writing to the first address within the device
- TWI_SendByte(0);
-
- // Write time data to the first set of device registers
- TWI_SendByte(CurrentRTCTime.Byte1.IntVal);
- TWI_SendByte(CurrentRTCTime.Byte2.IntVal);
- TWI_SendByte(CurrentRTCTime.Byte3.IntVal);
-
- // Write date data to the second set of device registers
- TWI_SendByte(CurrentRTCDate.Byte1.IntVal);
- TWI_SendByte(CurrentRTCDate.Byte2.IntVal);
- TWI_SendByte(CurrentRTCDate.Byte3.IntVal);
-
- TWI_StopTransmission();
+ return false;
}
+
+ return true;
}
-void DS1307_GetTimeDate(TimeDate_t* const TimeDate)
+bool DS1307_GetTimeDate(TimeDate_t* const TimeDate)
{
#if defined(DUMMY_RTC)
TimeDate->Hour = 1;
TimeDate->Month = 1;
TimeDate->Year = 1;
- return;
+ return true;
#endif
- if (TWI_StartTransmission(DS1307_ADDRESS_WRITE, 10))
- {
- // Must start reading from the first address within the device
- TWI_SendByte(0);
- TWI_StopTransmission();
- }
-
- DS1307_TimeRegs_t CurrentRTCTime;
- DS1307_DateRegs_t CurrentRTCDate;
+ DS1307_DateTimeRegs_t CurrentRegValues;
+ const uint8_t ReadAddress = 0;
- if (TWI_StartTransmission(DS1307_ADDRESS_READ, 10))
+ // 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)
{
- // First set of registers store the current time
- TWI_ReceiveByte(&CurrentRTCTime.Byte1.IntVal, false);
- TWI_ReceiveByte(&CurrentRTCTime.Byte2.IntVal, false);
- TWI_ReceiveByte(&CurrentRTCTime.Byte3.IntVal, false);
-
- // Second set of registers store the current date
- TWI_ReceiveByte(&CurrentRTCDate.Byte1.IntVal, false);
- TWI_ReceiveByte(&CurrentRTCDate.Byte2.IntVal, false);
- TWI_ReceiveByte(&CurrentRTCDate.Byte3.IntVal, true);
-
- TWI_StopTransmission();
+ return false;
}
-
+
// Convert stored time value into decimal
- TimeDate->Second = (CurrentRTCTime.Byte1.Fields.TenSec * 10) + CurrentRTCTime.Byte1.Fields.Sec;
- TimeDate->Minute = (CurrentRTCTime.Byte2.Fields.TenMin * 10) + CurrentRTCTime.Byte2.Fields.Min;
- TimeDate->Hour = (CurrentRTCTime.Byte3.Fields.TenHour * 10) + CurrentRTCTime.Byte3.Fields.Hour;
+ 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;
// Convert stored date value into decimal
- TimeDate->Day = (CurrentRTCDate.Byte1.Fields.TenDay * 10) + CurrentRTCDate.Byte1.Fields.Day;
- TimeDate->Month = (CurrentRTCDate.Byte2.Fields.TenMonth * 10) + CurrentRTCDate.Byte2.Fields.Month;
- TimeDate->Year = (CurrentRTCDate.Byte3.Fields.TenYear * 10) + CurrentRTCDate.Byte3.Fields.Year;
+ 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;
+
+ return true;
}
projects / pub / USBasp.git / blobdiff