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81 lines
2.8 KiB
81 lines
2.8 KiB
/*
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Copyright (C) Dean Camera, 2013.
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dean [at] fourwalledcubicle [dot] com
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www.lufa-lib.org
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*/
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#include "DS1307.h"
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bool DS1307_SetTimeDate(const TimeDate_t* NewTimeDate)
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{
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#if !defined(DUMMY_RTC)
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DS1307_DateTimeRegs_t NewRegValues;
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const uint8_t WriteAddress = 0;
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// Convert new time data to the DS1307's time register layout
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NewRegValues.Byte1.Fields.TenSec = (NewTimeDate->Second / 10);
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NewRegValues.Byte1.Fields.Sec = (NewTimeDate->Second % 10);
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NewRegValues.Byte1.Fields.CH = false;
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NewRegValues.Byte2.Fields.TenMin = (NewTimeDate->Minute / 10);
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NewRegValues.Byte2.Fields.Min = (NewTimeDate->Minute % 10);
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NewRegValues.Byte3.Fields.TenHour = (NewTimeDate->Hour / 10);
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NewRegValues.Byte3.Fields.Hour = (NewTimeDate->Hour % 10);
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NewRegValues.Byte3.Fields.TwelveHourMode = false;
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// Convert new date data to the DS1307's date register layout
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NewRegValues.Byte4.Fields.DayOfWeek = 0;
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NewRegValues.Byte5.Fields.TenDay = (NewTimeDate->Day / 10);
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NewRegValues.Byte5.Fields.Day = (NewTimeDate->Day % 10);
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NewRegValues.Byte6.Fields.TenMonth = (NewTimeDate->Month / 10);
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NewRegValues.Byte6.Fields.Month = (NewTimeDate->Month % 10);
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NewRegValues.Byte7.Fields.TenYear = (NewTimeDate->Year / 10);
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NewRegValues.Byte7.Fields.Year = (NewTimeDate->Year % 10);
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// Write the new Time and Date into the DS1307
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if (TWI_WritePacket(DS1307_ADDRESS, 10, &WriteAddress, sizeof(WriteAddress),
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(uint8_t*)&NewRegValues, sizeof(DS1307_DateTimeRegs_t)) != TWI_ERROR_NoError)
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{
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return false;
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}
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#endif
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return true;
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}
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bool DS1307_GetTimeDate(TimeDate_t* const TimeDate)
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{
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#if defined(DUMMY_RTC)
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TimeDate->Hour = 1;
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TimeDate->Minute = 1;
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TimeDate->Second = 1;
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TimeDate->Day = 1;
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TimeDate->Month = 1;
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TimeDate->Year = 1;
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#else
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DS1307_DateTimeRegs_t CurrentRegValues;
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const uint8_t ReadAddress = 0;
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// Read in the stored Time and Date from the DS1307
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if (TWI_ReadPacket(DS1307_ADDRESS, 10, &ReadAddress, sizeof(ReadAddress),
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(uint8_t*)&CurrentRegValues, sizeof(DS1307_DateTimeRegs_t)) != TWI_ERROR_NoError)
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{
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return false;
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}
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// Convert stored time value into decimal
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TimeDate->Second = (CurrentRegValues.Byte1.Fields.TenSec * 10) + CurrentRegValues.Byte1.Fields.Sec;
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TimeDate->Minute = (CurrentRegValues.Byte2.Fields.TenMin * 10) + CurrentRegValues.Byte2.Fields.Min;
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TimeDate->Hour = (CurrentRegValues.Byte3.Fields.TenHour * 10) + CurrentRegValues.Byte3.Fields.Hour;
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// Convert stored date value into decimal
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TimeDate->Day = (CurrentRegValues.Byte5.Fields.TenDay * 10) + CurrentRegValues.Byte5.Fields.Day;
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TimeDate->Month = (CurrentRegValues.Byte6.Fields.TenMonth * 10) + CurrentRegValues.Byte6.Fields.Month;
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TimeDate->Year = (CurrentRegValues.Byte7.Fields.TenYear * 10) + CurrentRegValues.Byte7.Fields.Year;
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#endif
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return true;
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}
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