diff options
Diffstat (limited to 'Projects/TemperatureDataLogger/Lib/DS1307.c')
| -rw-r--r-- | Projects/TemperatureDataLogger/Lib/DS1307.c | 129 |
1 files changed, 129 insertions, 0 deletions
diff --git a/Projects/TemperatureDataLogger/Lib/DS1307.c b/Projects/TemperatureDataLogger/Lib/DS1307.c new file mode 100644 index 000000000..37817e97f --- /dev/null +++ b/Projects/TemperatureDataLogger/Lib/DS1307.c @@ -0,0 +1,129 @@ +/*
+ 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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