1 files changed, 159 insertions, 0 deletions

diff --git a/lib/lufa/Projects/TempDataLogger/Lib/RTC.c b/lib/lufa/Projects/TempDataLogger/Lib/RTC.c
new file mode 100644
index 000000000..a5291eaf3
--- /dev/null
+++ b/lib/lufa/Projects/TempDataLogger/Lib/RTC.c
@@ -0,0 +1,159 @@
+/*
+     Copyright (C) Dean Camera, 2017.
+
+  dean [at] fourwalledcubicle [dot] com
+           www.lufa-lib.org
+*/
+
+#include "RTC.h"
+
+#if defined(DUMMY_RTC)
+
+/** Current dummy RTC time and date */
+static volatile TimeDate_t DummyRTC_Count;
+
+void RTC_Init(void)
+{
+        DummyRTC_Count.Hour   = 0;
+        DummyRTC_Count.Minute = 0;
+        DummyRTC_Count.Second = 0;
+        DummyRTC_Count.Day    = 1;
+        DummyRTC_Count.Month  = 1;
+        DummyRTC_Count.Year   = 00;
+}
+
+void RTC_Tick500ms(void)
+{
+        static bool HalfSecondElapsed = false;
+
+        HalfSecondElapsed = !HalfSecondElapsed;
+        if (HalfSecondElapsed == false)
+          return;
+
+        if (++DummyRTC_Count.Second < 60)
+          return;
+
+        DummyRTC_Count.Second = 0;
+
+        if (++DummyRTC_Count.Minute < 60)
+          return;
+
+        DummyRTC_Count.Minute = 0;
+
+        if (++DummyRTC_Count.Hour < 24)
+          return;
+
+        DummyRTC_Count.Hour = 0;
+
+        static const char MonthLength[12] = {31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31};
+        uint8_t DaysInMonth = MonthLength[DummyRTC_Count.Month - 1];
+
+        /* Check if we need to account for a leap year */
+        if ((DummyRTC_Count.Month == 2) &&
+            ((!(DummyRTC_Count.Year % 400)) || ((DummyRTC_Count.Year % 100) && !(DummyRTC_Count.Year % 4))))
+        {
+                DaysInMonth++;
+        }
+
+        if (++DummyRTC_Count.Day <= DaysInMonth)
+          return;
+
+        DummyRTC_Count.Day = 1;
+
+        if (++DummyRTC_Count.Month <= 12)
+          return;
+
+        DummyRTC_Count.Month = 1;
+        DummyRTC_Count.Year++;
+}
+
+bool RTC_SetTimeDate(const TimeDate_t* NewTimeDate)
+{
+        GlobalInterruptDisable();
+        DummyRTC_Count = *NewTimeDate;
+        GlobalInterruptEnable();
+
+        return true;
+}
+
+bool RTC_GetTimeDate(TimeDate_t* const TimeDate)
+{
+        GlobalInterruptDisable();
+        *TimeDate = DummyRTC_Count;
+        GlobalInterruptEnable();
+
+        return true;
+}
+
+#else
+
+void RTC_Init(void)
+{
+        /* Unused for a real external DS1307 RTC device */
+}
+
+void RTC_Tick500ms(void)
+{
+        /* Unused for a real external DS1307 RTC device */
+}
+
+bool RTC_SetTimeDate(const TimeDate_t* NewTimeDate)
+{
+        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 RTC_GetTimeDate(TimeDate_t* const TimeDate)
+{
+        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;
+}
+
+#endif