Subject:
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Re: time sampling under the rcx standard OS
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Newsgroups:
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lugnet.robotics.rcx.nqc
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Date:
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Mon, 19 Sep 2005 13:50:00 GMT
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Viewed:
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5817 times
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On Mon, September 19, 2005 3:54 am, Francois Bardet wrote:
> In lugnet.robotics.rcx.nqc, Steve Hassenplug wrote:
> > I usually set up my BrickOS programs so they use the internal timer, and only >
> > update the motor setting every 1 ms.
>
> This sounds intersesting : could you explain how you set up your BrickOS
> programs to use the internal timer ? Does it give the capability to loop and
> sample a sensor at a given frequency (which I think I can't do within Bricxcc
> under the lego firmware) ?
Well, in BrickOS, my loops usually execute at > 1kHz, so I usually just set it to
check the sensor, and set the motor every 1ms. So it just keeps checking the clock.
> As I need speed I'll switch to BrickOS, so I installed it. Now an other question
> : I didn't find where to download this OS to the RCX ? Can I do this from the
> Bricxcc IDE ?
Yes. There's an option that lets you download an "SREC" type of file. I don't
recall where it is. You'll just select "BrickOS".
Steve
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Message has 1 Reply:
 | | Re: time sampling under the rcx standard OS
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| Hi Steve, As I'm quite new to BrickOS and to C programming, I'm sorry I'm not sure I understood what you meant, neither how you do this : (...) - Do you check the sensor at a higher rate, and only send a command to the motor at 1kHz ? - How do you (...) (19 years ago, 21-Sep-05, to lugnet.robotics.rcx.nqc)
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Message is in Reply To:
| | Re: time sampling under the rcx standard OS
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| (...) Sorry, I didn't explain. This program only aims at checking the loop frequency capability of the rcx firmware, implementing a PWM. The rotation sensor is only used as a potentiometer knob, allowing me to determine by hand the PWM pulse as (...) (19 years ago, 19-Sep-05, to lugnet.robotics.rcx.nqc)
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