/* Copyright (C) Dean Camera, 2010. dean [at] fourwalledcubicle [dot] com www.fourwalledcubicle.com */ #include "DS1307.h" 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, 10)) { 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, 10)) { 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, 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); 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, 10)) { TWI_SendByte(DS1307_TIMEREG_START); TWI_StopTransmission(); } DS1307_TimeRegs_t CurrentRTCTime; 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(); } *Second = (CurrentRTCTime.Byte1.TenSec * 10) + CurrentRTCTime.Byte1.Sec; *Minute = (CurrentRTCTime.Byte2.TenMin * 10) + CurrentRTCTime.Byte2.Min; *Hour = (CurrentRTCTime.Byte3.TenHour * 10) + CurrentRTCTime.Byte3.Hour; }