Motenc-Lite Output

More
01 Oct 2010 03:20 #4463 by meisu
Motenc-Lite Output was created by meisu
I just installed a new Motenc-Lite board and installed EMC2. I'm not using the CNC software that comes with EMC2 because I'm not running a CNC mill. Right now, all I'm trying to do is put out a sine wave from the Motenc-Lite board. So, I set up a hal script to link siggen.0.cosine to motenc.0.dac-00-value. I can measure motence.0.dac-00-value with halscope and it shows the proper waveform. However, none of the pins are exhibiting this waveform. Obviously, I am loading the Motenc driver in hal with the command:

loadrt hal_motenc

I am far under qualified to write a driver myself. So, if someone could point out my stupid mistake that would be fantastic.

Thanks,
Peter

Please Log in or Create an account to join the conversation.

More
01 Oct 2010 12:49 - 01 Oct 2010 12:50 #4467 by ulda
Replied by ulda on topic Re:Motenc-Lite Output
Hi Peter

The dac write function has to be registered, did you do
addf motenc.0.encoder-read servo-thread 1
addf motenc.0.dac-write servo-thread 1

The gain and offset has to be set, too. Did you do
setp motenc.0.dac-00-gain 1
setp motenc.0.dac-00-offset 0

Hope this helps.

/ulda
Last edit: 01 Oct 2010 12:50 by ulda.

Please Log in or Create an account to join the conversation.

More
01 Oct 2010 13:40 #4468 by meisu
Replied by meisu on topic Re:Motenc-Lite Output
That was it. Thank you. By the way, in order for it to work, I had to take off the 1 from the end of the code you gave me. As in:

addf motenc.0.adc-read <mythread>
#and also
addf motenc.0.dac-write <mythread>

What was that 1 for?

Please Log in or Create an account to join the conversation.

More
01 Oct 2010 15:13 #4472 by ulda
Replied by ulda on topic Re:Motenc-Lite Output
If I recall correctly it is for putting this function to be executed first and not last.
/ulda

Please Log in or Create an account to join the conversation.

Moderators: PCWjmelson
Time to create page: 0.122 seconds
Powered by Kunena Forum