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/*
Copyright (C) Dean Camera, 2010.
dean [at] fourwalledcubicle [dot] com
www.fourwalledcubicle.com
*/
#include "DS1307.h"
void DS1307_Init(void)
{
// Nothing to initialize
}
void DS1307_SetDate(uint8_t Day, uint8_t Month, uint8_t Year)
{
#if defined(DUMMY_RTC)
return;
#endif
DS1307_DateRegs_t CurrentRTCDate;
CurrentRTCDate.Byte1.TenDay = (Day / 10);
CurrentRTCDate.Byte1.Day = (Day % 10);
CurrentRTCDate.Byte2.TenMonth = (Month / 10);
CurrentRTCDate.Byte2.Month = (Month % 10);
CurrentRTCDate.Byte3.TenYear = (Year / 10);
CurrentRTCDate.Byte3.Year = (Year % 10);
if (TWI_StartTransmission(DS1307_ADDRESS_WRITE))
{
TWI_SendByte(DS1307_DATEREG_START);
TWI_SendByte(CurrentRTCDate.Byte1.IntVal);
TWI_SendByte(CurrentRTCDate.Byte2.IntVal);
TWI_SendByte(CurrentRTCDate.Byte3.IntVal);
TWI_StopTransmission();
}
}
void DS1307_SetTime(uint8_t Hour, uint8_t Minute, uint8_t Second)
{
#if defined(DUMMY_RTC)
return;
#endif
DS1307_TimeRegs_t CurrentRTCTime;
CurrentRTCTime.Byte1.TenSec = (Second / 10);
CurrentRTCTime.Byte1.Sec = (Second % 10);
CurrentRTCTime.Byte1.CH = false;
CurrentRTCTime.Byte2.TenMin = (Minute / 10);
CurrentRTCTime.Byte2.Min = (Minute % 10);
CurrentRTCTime.Byte3.TenHour = (Hour / 10);
CurrentRTCTime.Byte3.Hour = (Hour % 10);
CurrentRTCTime.Byte3.TwelveHourMode = false;
if (TWI_StartTransmission(DS1307_ADDRESS_WRITE))
{
TWI_SendByte(DS1307_TIMEREG_START);
TWI_SendByte(CurrentRTCTime.Byte1.IntVal);
TWI_SendByte(CurrentRTCTime.Byte2.IntVal);
TWI_SendByte(CurrentRTCTime.Byte3.IntVal);
TWI_StopTransmission();
}
}
void DS1307_GetDate(uint8_t* Day, uint8_t* Month, uint8_t* Year)
{
#if defined(DUMMY_RTC)
*Day = 1;
*Month = 1;
*Year = 1;
return;
#endif
if (TWI_StartTransmission(DS1307_ADDRESS_WRITE))
{
TWI_SendByte(DS1307_DATEREG_START);
TWI_StopTransmission();
}
DS1307_DateRegs_t CurrentRTCDate;
if (TWI_StartTransmission(DS1307_ADDRESS_READ))
{
TWI_ReceiveByte(&CurrentRTCDate.Byte1.IntVal, false);
TWI_ReceiveByte(&CurrentRTCDate.Byte2.IntVal, false);
TWI_ReceiveByte(&CurrentRTCDate.Byte3.IntVal, true);
TWI_StopTransmission();
}
*Day = (CurrentRTCDate.Byte1.TenDay * 10) + CurrentRTCDate.Byte1.Day;
*Month = (CurrentRTCDate.Byte2.TenMonth * 10) + CurrentRTCDate.Byte2.Month;
*Year = (CurrentRTCDate.Byte3.TenYear * 10) + CurrentRTCDate.Byte3.Year;
}
void DS1307_GetTime(uint8_t* Hour, uint8_t* Minute, uint8_t* Second)
{
#if defined(DUMMY_RTC)
*Hour = 1;
*Minute = 1;
*Second = 1;
return;
#endif
if (TWI_StartTransmission(DS1307_ADDRESS_WRITE))
{
TWI_SendByte(DS1307_TIMEREG_START);
TWI_StopTransmission();
}
DS1307_TimeRegs_t CurrentRTCTime;
if (TWI_StartTransmission(DS1307_ADDRESS_READ))
{
TWI_ReceiveByte(&CurrentRTCTime.Byte1.IntVal, false);
TWI_ReceiveByte(&CurrentRTCTime.Byte2.IntVal, false);
TWI_ReceiveByte(&CurrentRTCTime.Byte3.IntVal, true);
TWI_StopTransmission();
}
*Second = (CurrentRTCTime.Byte1.TenSec * 10) + CurrentRTCTime.Byte1.Sec;
*Minute = (CurrentRTCTime.Byte2.TenMin * 10) + CurrentRTCTime.Byte2.Min;
*Hour = (CurrentRTCTime.Byte3.TenHour * 10) + CurrentRTCTime.Byte3.Hour;
}
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