Subject:
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Re: sys_time (long post)
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Newsgroups:
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lugnet.robotics.rcx.legos
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Date:
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Mon, 16 Dec 2002 11:57:25 GMT
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Viewed:
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2964 times
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Only a suggestion,
In any processor architecture (with or without disabling or recursive
interrupts) when I need to read timers with more than 1 single instruction I
do the following:
Read the timer (both low and high value) until I get 2 times the same readings.
These approach have some performance drawbacks, but it works ever, with any
language and with any processor.
Hope this help,
Paulo Tesche
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Message is in Reply To:
 | | Re: sys_time (long post)
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| (...) It turns out that the nature of the glitch depends on the order you read the upper and lower 16-bits of sys_time. If the compiler generates code that reads the high word first (which it seems to do), then your example will work. However, if (...) (22 years ago, 13-Dec-02, to lugnet.robotics.rcx.legos)
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