Justin Howard
Simple RTC class based on DS1307. Emphasis on simple. Allows you to run at 100k or 400k Hz (for newer DS1307 capable devices). MapTime() allows you to set the time() service to the same as the RTC. Uses struct tm throughout so you can use traditional time functions for manipulation.
Diff: RTclock.h
- Revision:
- 0:98b84d9c8c96
- Child:
- 5:d71d6e5a7eee
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/RTclock.h Sat Aug 09 09:18:38 2014 +0000
@@ -0,0 +1,61 @@
+#ifndef __RTCLOCK_H__
+#define __RTCLOCK_H__
+
+#include <time.h>
+
+typedef I2C RTclock_parent;
+
+class RTclock
+ : public RTclock_parent
+{
+public:
+ // Frequency values for the square wave output
+ enum ESquareWaveRates
+ {
+ eSWR_1Hz = 0,
+ eSWR_4kHz = 1,
+ eSWR_8kHz = 2,
+ eSWR_32Hz = 3
+ };
+
+public:
+ RTclock
+ (
+ PinName in_nSDA,
+ PinName in_nSCL,
+ bool in_bHiSpeed = false
+ );
+ virtual ~RTclock();
+
+ virtual bool MapTime(); // Maps RTC chip to C time.h time system
+ virtual bool GetTime(tm & out_sTM); // Get a TM structure directly
+ static const char * GetWeekday(int in_nWeekDay);
+ virtual bool SetSquareWaveOutput
+ (
+ bool in_bEnable,
+ ESquareWaveRates in_nRateSelect
+ );
+ virtual bool SetTime(const tm & in_sTM); // Set time time using a TM structure (always starts)
+
+protected:
+ static int BcdToDecimal(int in_nBCD);
+ static int DecimalToBcd(int in_nDecimal);
+ virtual bool read
+ (
+ int in_nAddress,
+ char * out_pBuffer,
+ int in_nLength
+ );
+ virtual bool SetRunning(bool in_nEnable);
+ virtual bool write
+ (
+ int in_nAddress,
+ const char * in_pBuffer,
+ int in_nLength
+ );
+
+private:
+ static const char * m_aWeekDays[]; // Days of the week
+};
+
+#endif // __RTCLOCK_H__