You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
85 lines
2.9 KiB
85 lines
2.9 KiB
/*
|
|
Copyright (C) Dean Camera, 2012.
|
|
|
|
dean [at] fourwalledcubicle [dot] com
|
|
www.lufa-lib.org
|
|
*/
|
|
|
|
#include "DS1307.h"
|
|
|
|
bool DS1307_SetTimeDate(const TimeDate_t* NewTimeDate)
|
|
{
|
|
#if defined(DUMMY_RTC)
|
|
return true;
|
|
#endif
|
|
|
|
DS1307_DateTimeRegs_t NewRegValues;
|
|
const uint8_t WriteAddress = 0;
|
|
|
|
// Convert new time data to the DS1307's time register layout
|
|
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
|
|
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);
|
|
|
|
// 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)
|
|
{
|
|
return false;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
bool DS1307_GetTimeDate(TimeDate_t* const TimeDate)
|
|
{
|
|
#if defined(DUMMY_RTC)
|
|
TimeDate->Hour = 1;
|
|
TimeDate->Minute = 1;
|
|
TimeDate->Second = 1;
|
|
|
|
TimeDate->Day = 1;
|
|
TimeDate->Month = 1;
|
|
TimeDate->Year = 1;
|
|
|
|
return true;
|
|
#endif
|
|
|
|
DS1307_DateTimeRegs_t CurrentRegValues;
|
|
const uint8_t ReadAddress = 0;
|
|
|
|
// 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)
|
|
{
|
|
return false;
|
|
}
|
|
|
|
// Convert stored time value into decimal
|
|
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 = (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;
|
|
}
|
|
|