Can't get DoubleStep to work ? SOLVED
04 Jun 2019 21:59 #135867
by Lezard
Replied by Lezard on topic Can't get DoubleStep to work ? SOLVED
OK got it, so I'll try again tomorrow and will let you know.
Thank you for your time and patience !
Thank you for your time and patience !
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05 Jun 2019 13:32 #135941
by Lezard
Replied by Lezard on topic Can't get DoubleStep to work ? SOLVED
So, I've modified my .hal file in order to reset only the Step pins, and not the Dirs, but this didn't seem to improve things much :
The drives still don't receive the expected count of pulses for a given move, as seen from the ASDA monitoring software. The loss is maybe a bit reduced, but I can't tell for sure as it is a bit random.
So, for the time being, I think I'll refrain from using DoubleStep on my current setup. This is not a deal-breaker, and this matter will probably resolve by itself when I upgrade my hardware.
Thank you all for your help,
Best regards
The drives still don't receive the expected count of pulses for a given move, as seen from the ASDA monitoring software. The loss is maybe a bit reduced, but I can't tell for sure as it is a bit random.
So, for the time being, I think I'll refrain from using DoubleStep on my current setup. This is not a deal-breaker, and this matter will probably resolve by itself when I upgrade my hardware.
Thank you all for your help,
Best regards
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05 Jun 2019 23:12 #135983
by tommylight
Replied by tommylight on topic Can't get DoubleStep to work ? SOLVED
Try it with a bit higher base thread period, might get you what you want.
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06 Jun 2019 14:57 #136057
by andypugh
Doublestep / reset is independent of the base thread.
What actually happens is that the reset function is called last, and then it busy-waits until there has been at least reset-time nS since the parallel port pins were written. Typically this is a very short wait, or no wait at all, if there is some other function running between parport-write and reset.
Replied by andypugh on topic Can't get DoubleStep to work ? SOLVED
Try it with a bit higher base thread period, might get you what you want.
Doublestep / reset is independent of the base thread.
What actually happens is that the reset function is called last, and then it busy-waits until there has been at least reset-time nS since the parallel port pins were written. Typically this is a very short wait, or no wait at all, if there is some other function running between parport-write and reset.
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