Linx 3.0 PWM on BBB feature request

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eschp...@gmail.com

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Apr 6, 2017, 10:51:41 AM4/6/17
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Hi everybody,
I am working on a solar water heater project which will be presented
at the Maker Faire Europe in Rome, Italy, in October 2017.
I am using BBB from Labview with Linx 3.0.
My problem is this: from Linx, it is only possible to control the duty cycle of
the PWM outputs, not the frequency, which is fixed. But I need to use
a PWM with the frequency 50 Hz and another PWM with the frequency 2000 Hz
at the same time, and I cannot do that.
How can this be solved? The ideal solution would be to have a patched
PWM VI in Labview Linx which controls both frequency and duty cycle.
Can anybody help me?
Thanks!

Antonio

Robert Nelson

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Apr 6, 2017, 10:56:18 AM4/6/17
to Beagle Board, eschp...@gmail.com
pwm's have a "period" option...

https://www.kernel.org/doc/Documentation/pwm.txt

Regards,

--
Robert Nelson
https://rcn-ee.com/

Jason Kridner

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Apr 6, 2017, 10:57:41 AM4/6/17
to BeagleBoard, eschp...@gmail.com
I asked the developers at NI and they pointed me to the LVMakerHub forums: 
https://www.labviewmakerhub.com/forums/index.php

Can you ask over there and come back here with any answer you get?

If you don't get an answer, please post here with the link to your post on the other forum and I'll follow-up with NI directly. This just seems like a pretty fundamental feature to support.


Thanks!

Antonio

eschp...@gmail.com

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Apr 6, 2017, 9:42:28 PM4/6/17
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OK, I just submitted the problem to the Labview Developer Makerhub forum (waiting for moderators to publish it).
I will then post the link with any answers back here.
Thanks
Antonio

eschp...@gmail.com

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Apr 17, 2017, 2:44:50 PM4/17/17
to BeagleBoard, eschp...@gmail.com
Hello everybody and happy Easter!
My post in the Labview Makerhub forum has now been published a week ago,
Here it is:
There are still no answers, and my feeling is that NI has
dropped Linx development, which means in turn that I will (regretfully) abandon
Labview on Beaglebone Black as the platform of choice for developing my embedded project.
Anyway,many thanks for your help!

Robert Nelson

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Apr 17, 2017, 6:05:39 PM4/17/17
to Beagle Board, Antonio Esposito, Jason Kridner
@jason is there someone at NI we can ping?

and tell them, hz = 1/ period:
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