Subject:
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Re: Assembly in my C-program
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Newsgroups:
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lugnet.robotics.rcx.legos
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Date:
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Wed, 28 Mar 2001 23:25:26 GMT
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Viewed:
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1449 times
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In lugnet.robotics.rcx.legos, Athanasios Kostakos writes:
> Actually I am trying to control a stepper motor. So when i need to send 50 • pulses
> fast, motor on and off takes same time because there same other tasks running • at
> the same time.
> So it would be much quicker if I could just call motor speed (50), and Legos • would
>
> perform the on off for me (as it does now, but not continuously -pwm).
Hmmmm. This should be possible, but it's a bit more tricky with stepper motors
- you have to allow for the speed-up and slow-down. Thus just calling
motor_speed(50) would have to initiate a task that starts with slow pulses
(rotating between the X stepper coils), gradually increasing till it reaches
the desired speed. Same with slowing down. And it gets really tricky when you
want to slow down before you've finished speeding up.
I was thinking of doing something similar with normal motors, to provide full
control of speeding up & slowing down, potentially for implementing RCX
"driven" trains. Haven't got around to it yet.
ROSCO
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Message is in Reply To:
 | | Re: Assembly in my C-program
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| Actually I am trying to control a stepper motor. So when i need to send 50 pulses fast, motor on and off takes same time because there same other tasks running at the same time. So it would be much quicker if I could just call motor speed (50), and (...) (24 years ago, 28-Mar-01, to lugnet.robotics.rcx.legos)
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