Delay loops
I need to add some delays more shorter than the 1 ms pause offers. I am
thinking that I'll use for next. Is there a rule of thumb on how long it
takes to execute an empty for next loop?
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\/\/\/\/\/\/\/\/\/\/\/\/\/\ Michael L. Morgan /\/\/\/\/\/\/\/\/\/\/\/\/\/
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thinking that I'll use for next. Is there a rule of thumb on how long it
takes to execute an empty for next loop?
/
\
\/\/\/\/\/\/\/\/\/\/\/\/\/\ Michael L. Morgan /\/\/\/\/\/\/\/\/\/\/\/\/\/
/ Email: mlmorgan@o... | WWW: http://home.olemiss.edu/~mlmorgan/ \
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/
Comments
that there is a significant delay as the Stamp pulls instructions from the
serial EEPROM. So a 100uS pulse won't really delay 100uS -- it will be more
because of the overhead.
Beyond that Tracy Allen's site has some individual timings for instructions.
Regards,
Al Williams
AWC
* Tax special from now to April 17th. Order a copy of Microcontroller
Projects with Basic Stamps and get an ASP-II free.
http://www.al-williams.com/awce/sbook.htm
>
Original Message
> From: Michael Land Morgan [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=rkqxOenuMpLg8QlMRM-yUI3in_ICih3Ss-yGOkRyKZn9bPAuBefIIx5QoNGLZ4W8BeLLEMvUWPfL1Ee2fnSwnO4NNBVRRUmnJpiP_9E]mlmorgan@s...[/url
> Sent: Wednesday, April 12, 2000 10:59 AM
> To: basicstamps@egroups.com
> Subject: [noparse][[/noparse]basicstamps] Delay loops
>
>
> I need to add some delays more shorter than the 1 ms pause offers. I am
> thinking that I'll use for next. Is there a rule of thumb on how long it
> takes to execute an empty for next loop?
>
> /
\
> \/\/\/\/\/\/\/\/\/\/\/\/\/\ Michael L. Morgan /\/\/\/\/\/\/\/\/\/\/\/\/\/
> / Email: mlmorgan@o... | WWW: http://home.olemiss.edu/~mlmorgan/ \
> \
/
>
>
>
> thinking that I'll use for next. Is there a rule of thumb on how long it
> takes to execute an empty for next loop?
One way to get quite precise delays is to use the pulsout command, directed
to an unused pin. Then you get a resolution of 2 microseconds, plus the
220 microsecond interpreter time. I have some timings posted at
http://www.emesystems.com/BS2misc.htm
regards,
-- Tracy Allen
Electronically Monitored Ecosystems
http://www.emesystems.com
about 200us. BUT, it depends on the type of loop, how far the jump is and what
you are comparing to make the jump.
DLC
> I need to add some delays more shorter than the 1 ms pause offers. I am
> thinking that I'll use for next. Is there a rule of thumb on how long it
> takes to execute an empty for next loop?
>
> /
\
> \/\/\/\/\/\/\/\/\/\/\/\/\/\ Michael L. Morgan /\/\/\/\/\/\/\/\/\/\/\/\/\/
> / Email: mlmorgan@o... | WWW: http://home.olemiss.edu/~mlmorgan/ \
> \
/
>
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