Subject:
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Re: I2C device for the RCX
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Newsgroups:
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lugnet.robotics
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Date:
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Sun, 12 Jan 2003 11:13:15 GMT
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Viewed:
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814 times
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In lugnet.robotics, Steve Baker <sjbaker1@airmail.net> writes:
> Bastiaan v.Kesteren wrote:
>
> > 1.bus free time,min 4.7us =0.47ms,in BrickOS program 1 ms
>
> Erm...no...you have some trouble with your numbers!
>
> 1000us == 1ms
>
> so:
>
> 4.7us == 0.0047ms !!
OK, stupid of me!
>
> > 2.START condition set-up time,min 4.7us =0.47ms,in BrickOS program 2 ms
> > 3.START condition hold time,min 4.0us =0.40ms,in BrickOS program 1 ms
> > 4.STOP condition set-up time,min 4.0us =0.40ms,in BrickOS program 1 ms
> > 5.SCL low time,min 4.7us =0.47ms,in BrickOS program 2 ms
> > 6.SCL high time,min 4.0us =0.47ms,in BrickOS program 2 ms
> > 7.data set-up time,min 250ns =2.5ms,in BrickOS program 2 ms
>
> Yikes! Nooooooooo!
>
> 250ns == 0.25us == 0.00025ms
even more stupid.....
Maybe I should go back to primary-school for a while to learn those things
again (-:
anyway, thanks for the suggestions.
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Message is in Reply To:
 | | Re: I2C device for the RCX
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| (...) Erm...no...you have some trouble with your numbers! 1000us == 1ms so: 4.7us == 0.0047ms !! (...) Yikes! Nooo...ooo! 250ns == 0.25us == 0.00025ms Remember: ms is a millisecond which is 1/1000th second. us is a microsecond which is 1/1000000th (...) (22 years ago, 11-Jan-03, to lugnet.robotics)
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