In SX Microcontrollers, SX/B Compiler and SX-Key Tool, Zoot wrote:

But you seem to still skip over the RETURNINT in some cases. I am sure this would lead to unpredictable results. But if you are just counting time, why not just count time with a free running interrupt? e.g.:

[code]
msLed PIN RA.3 OUTPUT
secLed      PIN RB.4 OUTPUT

flags VAR byte ' global variable
isrFlag VAR flags.0

microseconds VAR Word
milliseconds VAR Word
seconds VAR Byte
minutes VAR Byte
hours    VAR Byte

WATCH microseconds
WATCH milliseconds
WATCH seconds
WATCH minutes
WATCH hours

'ISR
   INTERRUPT 1_000_000 ' every micro second, personally I would do milliseconds or maybe 100us (INTERRUPT 10_000) unless you really need micro seconds

   isrFlag = 1
 
   RETURNINT

Start:

    msLed = 0
    secLed = 0

Main:

   IF isrFlag = 0 THEN Main
       isrFlag = 0
       microseconds = microseconds + 1
       IF microseconds >= 1000 THEN
            microseconds = microseconds - 1000
            milliseconds = milliseconds + 1
            msLed = ~msLed
            IF milliseconds >= 1000 THEN
               milliseconds = 0
               seconds = seconds + 1
               secLed = ~secLed
               IF seconds >= 60 THEN
                  seconds = 0
                  minutes = minutes + 1
                  IF minutes >= 60 THEN
                     minutes = 0
                     hours = hours + 1
                  ENDIF
               ENDIF
            ENDIF
        ENDIF
  
        GOTO Main

[/code]

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