Tech Support: Converting to MultiTrack (In Control)

Tech Support: Converting to MultiTrack

Kelly wrote:

Hi David
I'm converting some older code to multitask.

In subroutines where I have used PAUSE or similar, can I just use the
supertimer and do I need to have all "yieldtask" instructions in the
task itself ?

PAUSE, WaitOnT etc. will work in a MultiTrack task. They hold up that task but no others. You don't have to build a Pause using the supertimers.

The supertimers come in where you need to have a loop waiting for something not covered by an existing timed wait, and/or one of several possible outcomes. For example, this loop will continue until timeout or one of two possible events.

;Wait for something to happen, timeout after 60s

            MarkTime                        ;Capture "now"
WaitLoop    YieldTask
            GoIfInOn        iSwitch,GotSw   ;Test 1st condition
            GoIfST          sOverLoad,OvLd  ;Test 2nd condition
            LoopIfTiming    6000,WaitLoop   ;Keep waiting for 60s
            GoTo            TimeOut

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Posted on April 24, 2007 12:45 PM | Permalink

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This page contains a single entry from the blog posted on April 24, 2007 12:45 PM.

The previous post in this blog was ModBus Master in VB2005 (.NET).

The next post in this blog is Tech Support: Converting to MultiTrack #2.

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In Control

About embedded electronic control systems. David Gibson, SPLat Controls