Difference: RealTimeClock (4 vs. 5)

Revision 52022-12-04 - PeterSchmid

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 Intro 
 
Most MCUs integrate a real time clock as peripheral. STM32 MCUs are no different. Many designs have its own 32.768 kHz quartz for precise timing, about 10 ppm without trimming.






 Contents 
 
 
  RTC Words
   How to Use 
  Set the current date and time
   Set Alarms
 
 






 

 RTC Words
 Epoch is 1.1.1970 (Unix time stamp). But valid dates are from 1.1.2000 to 31.12.2099 because of the STM32 RTC peripheral.
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+time@          (  -- u )      Returns the unix time stamp. 
time!          ( u --  )      Sets the real time clock.
.time          ( -- )         Prints the current date and time (YYYY-MM-DDTHH:MM:SS ISO 8601).
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+time@          (  -- u )      Return the unix time stamp. 
time!          ( u --  )      Set the real time clock.
.time          ( -- )         Print the current date and time (YYYY-MM-DDTHH:MM:SS ISO 8601).

clktime        ( -- u )       hour*10000 + minute*100 + second
clkdate        ( -- u )       Year*10000 + Month*100 + Day
time&date      ( -- n1 n2 n3 n4 n5 n6 )  Return the current time and date.
                              n1 second {0...59}, n2 minute {0...59}, n3 hour {0...23}, 
                              n4 day {1...31} n5 month {1...12}, n6 year (e.g. 1991) *
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+date                          Prints date unix style Mon Jan  1 01:57:52 2000
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+date                          Print date unix style Mon Jan  1 01:57:52 2000
 wait-alarm     ( -- )         Wait for an alarm
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+alarm!         (h m s -- )    Sets the alarm, invalid parameters e.g. -1 mask the parameter
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+alarm!         (h m s -- )    Set the alarm, invalid parameters e.g. -1 mask the parameter

ms             ( u -- )       Wait at least u millisecond (osDelay) *

*) part of ansification.fs
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+ How to set the current date and time?
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+ How to Use 

 Set the current date and time
 Copy the current time stamp from a Unix machine (GNU/Linux box) or from https://www.unixtimestamp.com/:
 Launch! ok.
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 --   Peter Schmid  - 2020-10-11

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