From 60b30c036397cb5627fa374bb930794b225daa29 Mon Sep 17 00:00:00 2001
From: Jack Humbert <jack.humb@gmail.com>
Date: Fri, 7 Jul 2017 11:55:23 -0400
Subject: Squashed 'lib/lufa/' content from commit 385d40300
git-subtree-dir: lib/lufa
git-subtree-split: 385d4030035dbaf41591309dbde47653bd03841b
---
Projects/TempDataLogger/Lib/RTC.c | 159 ++++++++++++++++++++++++++++++++++++++
1 file changed, 159 insertions(+)
create mode 100644 Projects/TempDataLogger/Lib/RTC.c
(limited to 'Projects/TempDataLogger/Lib/RTC.c')
diff --git a/Projects/TempDataLogger/Lib/RTC.c b/Projects/TempDataLogger/Lib/RTC.c
new file mode 100644
index 0000000000..a5291eaf3c
--- /dev/null
+++ b/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
--
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