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134 lines
3.5 KiB
134 lines
3.5 KiB
/*
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Copyright (C) Dean Camera, 2010.
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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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void DS1307_SetDate(const uint8_t Day,
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const uint8_t Month,
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const uint8_t Year)
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{
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#if defined(DUMMY_RTC)
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return;
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#endif
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DS1307_DateRegs_t CurrentRTCDate;
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CurrentRTCDate.Byte1.Fields.TenDay = (Day / 10);
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CurrentRTCDate.Byte1.Fields.Day = (Day % 10);
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CurrentRTCDate.Byte2.Fields.TenMonth = (Month / 10);
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CurrentRTCDate.Byte2.Fields.Month = (Month % 10);
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CurrentRTCDate.Byte3.Fields.TenYear = (Year / 10);
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CurrentRTCDate.Byte3.Fields.Year = (Year % 10);
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if (TWI_StartTransmission(DS1307_ADDRESS_WRITE, 10))
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{
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TWI_SendByte(DS1307_DATEREG_START);
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TWI_SendByte(CurrentRTCDate.Byte1.IntVal);
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TWI_SendByte(CurrentRTCDate.Byte2.IntVal);
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TWI_SendByte(CurrentRTCDate.Byte3.IntVal);
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TWI_StopTransmission();
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}
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}
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void DS1307_SetTime(const uint8_t Hour,
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const uint8_t Minute,
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const uint8_t Second)
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{
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#if defined(DUMMY_RTC)
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return;
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#endif
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DS1307_TimeRegs_t CurrentRTCTime;
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CurrentRTCTime.Byte1.Fields.TenSec = (Second / 10);
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CurrentRTCTime.Byte1.Fields.Sec = (Second % 10);
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CurrentRTCTime.Byte1.Fields.CH = false;
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CurrentRTCTime.Byte2.Fields.TenMin = (Minute / 10);
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CurrentRTCTime.Byte2.Fields.Min = (Minute % 10);
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CurrentRTCTime.Byte3.Fields.TenHour = (Hour / 10);
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CurrentRTCTime.Byte3.Fields.Hour = (Hour % 10);
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CurrentRTCTime.Byte3.Fields.TwelveHourMode = false;
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if (TWI_StartTransmission(DS1307_ADDRESS_WRITE, 10))
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{
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TWI_SendByte(DS1307_TIMEREG_START);
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TWI_SendByte(CurrentRTCTime.Byte1.IntVal);
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TWI_SendByte(CurrentRTCTime.Byte2.IntVal);
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TWI_SendByte(CurrentRTCTime.Byte3.IntVal);
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TWI_StopTransmission();
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}
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}
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void DS1307_GetDate(uint8_t* const Day,
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uint8_t* const Month,
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uint8_t* const Year)
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{
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#if defined(DUMMY_RTC)
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*Day = 1;
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*Month = 1;
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*Year = 1;
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return;
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#endif
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if (TWI_StartTransmission(DS1307_ADDRESS_WRITE, 10))
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{
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TWI_SendByte(DS1307_DATEREG_START);
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TWI_StopTransmission();
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}
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DS1307_DateRegs_t CurrentRTCDate;
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if (TWI_StartTransmission(DS1307_ADDRESS_READ, 10))
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{
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TWI_ReceiveByte(&CurrentRTCDate.Byte1.IntVal, false);
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TWI_ReceiveByte(&CurrentRTCDate.Byte2.IntVal, false);
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TWI_ReceiveByte(&CurrentRTCDate.Byte3.IntVal, true);
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TWI_StopTransmission();
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}
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*Day = (CurrentRTCDate.Byte1.Fields.TenDay * 10) + CurrentRTCDate.Byte1.Fields.Day;
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*Month = (CurrentRTCDate.Byte2.Fields.TenMonth * 10) + CurrentRTCDate.Byte2.Fields.Month;
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*Year = (CurrentRTCDate.Byte3.Fields.TenYear * 10) + CurrentRTCDate.Byte3.Fields.Year;
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}
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void DS1307_GetTime(uint8_t* const Hour,
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uint8_t* const Minute,
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uint8_t* const Second)
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{
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#if defined(DUMMY_RTC)
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*Hour = 1;
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*Minute = 1;
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*Second = 1;
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return;
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#endif
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if (TWI_StartTransmission(DS1307_ADDRESS_WRITE, 10))
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{
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TWI_SendByte(DS1307_TIMEREG_START);
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TWI_StopTransmission();
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}
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DS1307_TimeRegs_t CurrentRTCTime;
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if (TWI_StartTransmission(DS1307_ADDRESS_READ, 10))
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{
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TWI_ReceiveByte(&CurrentRTCTime.Byte1.IntVal, false);
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TWI_ReceiveByte(&CurrentRTCTime.Byte2.IntVal, false);
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TWI_ReceiveByte(&CurrentRTCTime.Byte3.IntVal, true);
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TWI_StopTransmission();
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}
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*Second = (CurrentRTCTime.Byte1.Fields.TenSec * 10) + CurrentRTCTime.Byte1.Fields.Sec;
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*Minute = (CurrentRTCTime.Byte2.Fields.TenMin * 10) + CurrentRTCTime.Byte2.Fields.Min;
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*Hour = (CurrentRTCTime.Byte3.Fields.TenHour * 10) + CurrentRTCTime.Byte3.Fields.Hour;
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}
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