RTC Library for STM32F4xx devices - http://stm32f4-discovery.com/2014/07/library-19-use-internal-rtc-on-stm32f4xx-devices/. More...

Modules
	TM_RTC_Macros
	Library defines.

	TM_RTC_Typedefs
	Library Typedefs.

	TM_RTC_Functions
	Library Functions.

Detailed Description

RTC Library for STM32F4xx devices - http://stm32f4-discovery.com/2014/07/library-19-use-internal-rtc-on-stm32f4xx-devices/.

Features

- Support Internal or external clock source
  - PC14 and PC15 pins are used for external crystal oscillator
  - STM32F4/429 Discovery does not have RTC crystal onboard. Check board's manual on how to set it up
- Support wakeup interrupt
- Support to set 2 internal alarms to trigger interrupts
  - They can also wake up STM32F4 from any low power mode
- Get seconds from 01.01.1970 00:00:00
- Get readable time from seconds from 01.01.1970 00:00:00
- Support to save/get data in binary or BCD format
- Support for read/write data to/from RTC backup registers
- Support for subsecond
- Support to write data in string format
- Date and time are checked before saved for valid input data
- Get days in month and year

Pinout for RTC external 32768Hz crystal

 STM32F4XX  Oscillator   Description
    
 PC14       OSC1         Oscillator terminal 1
 PC15       OSC2         Oscillator terminal 2

Changelog

 Version 1.7.1
   - March 25, 2015
   - Fixed issue with RTC wakeup interrupts

 Version 1.7
   - March 15, 2015
   - Added support for read/write data to/from RTC backup registers

 Version 1.6
   - February 17, 2015
   - Created typedef TM_RTC_t from TM_RTC_Time_t

 Version 1.5
   - December 21, 2014
   - Added 2 new functions:
      TM_RTC_GetDaysInMonth: returns number of days in specific month and year
      TM_RTC_GetDaysInYear: returns number of days in specific year

 Version 1.4
   - December 21, 2014
   - TM_RTC_SetDateTime now checks for valid input data before save
   - Added function TM_RTC_SetDateTimeString which allows you to set your
      date and time using string format

 Version 1.3
   - December 03, 2014
   - Fixed bug when reading month in december was set to 0

 Version 1.2
   - October 27, 2014
   - Added support to read subseconds from time
   - This can be used for stopwatch

 Version 1.1
   - October 20, 2014
   - Added support for Alarm set

 Version 1.0.2
   - September 24, 2014
   - TM_RTC_RequestHandler function has now "__weak" attribute to prevent errors,
      if function is not implemented by user

 Version 1.0.1
   - September 01, 2014
   - Date to unix convert bug fix

 Version 1.0
   - First release

Dependencies

 - STM32F4xx
 - STM32F4xx RCC
 - STM32F4xx RTC
 - STM32F4xx PWR
 - STM32F4xx EXTI
 - MISC
 - defines.h
 - attributes.h

Modules

Detailed Description