Re: [Emc-users] Mesa 5i25 firmware - is there a mistake?

[Viesturs Lācis]

2016-02-19 0:13 GMT+02:00 Peter C. Wallace :
>
> I dont think there are any common 5 axis pinouts that match parallel port
> breakouts, but if you are not aiming at a parallel port compatible pinout, you
> might be able to use a 7I76 pinout. It has 5 stepgens and if the other options
> (like sserial and encoder) are explicitedly disabled in the config line, all
> the free pins shoud be usable for GPIO
>

I _think_ that I have to stick with parallel port compatible pinout -
that breakout board has optoisolators, so pins 1-9, 14,16, 17 can be
used as outputs only, 10-13, 15 as inputs only. The machine is about
80 km from me and I do not have spare 5i25 to check, which pins are
used for stepgen signals. I would gladly keep that breakout board just
for sake of protecting 5i25 board...
Is there any chance to convince you for a quick hack to adjust that
g540 firmware to include also dir pin? It does not matter, on which
particular parport pin it would go, I will rewire accordingly.

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Re: [Emc-users] Mesa 5i25 firmware - is there a mistake?

[Peter C. Wallace]

On Thu, 18 Feb 2016, Viesturs L?cis wrote:

> Date: Thu, 18 Feb 2016 23:01:37 +0200
> From: "[UTF-8] Viesturs L?cis" <viesturs.la...@gmail.com>
> Reply-To: "Enhanced Machine Controller (EMC)"
> <emc-users@lists.sourceforge.net>
> To: "Enhanced Machine Controller (EMC)" <emc-users@lists.sourceforge.net>
> Subject: [Emc-users] Mesa 5i25 firmware - is there a mistake?
> 
> Hello!
>
> I am trying to set up a cnc machine with 5 steppers that is supposed
> to run with 5i25 card and simple breakout board.
> I downloaded 5i25.zip file from mesanet.com webpage and found that
> 5i25_g540x2.bit might be the most appropriate firmware to use.
> The problem is that in .pin file I see that there is step pin for
> stepgen4, but I do not see dir pin for stepgen4... Outputs of stepgens
> 0-3 are working great, now I need to get 5th motor to work, but I have
> no idea, which pin is dir pin.
> Is there a mistake in .pin file and the dir pin is not specified or
> does the dir pin not exist at all?
>
> Thanks in advance!
>
> Viesturs
>
> --

The G540 is a 4 axis breakout/drive combination, the fifth stepgen is used for 
the chargepump, so doesn't have a dir pin...

I dont think there are any common 5 axis pinouts that match parallel port 
breakouts, but if you are not aiming at a parallel port compatible pinout, you 
might be able to use a 7I76 pinout. It has 5 stepgens and if the other options 
(like sserial and encoder) are explicitedly disabled in the config line, all 
the free pins shoud be usable for GPIO


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> Monitor end-to-end web transactions and take corrective actions now
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Peter Wallace
Mesa Electronics

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[Emc-users] Mesa 5i25 firmware - is there a mistake?

[Viesturs Lācis]

Hello!

I am trying to set up a cnc machine with 5 steppers that is supposed
to run with 5i25 card and simple breakout board.
I downloaded 5i25.zip file from mesanet.com webpage and found that
5i25_g540x2.bit might be the most appropriate firmware to use.
The problem is that in .pin file I see that there is step pin for
stepgen4, but I do not see dir pin for stepgen4... Outputs of stepgens
0-3 are working great, now I need to get 5th motor to work, but I have
no idea, which pin is dir pin.
Is there a mistake in .pin file and the dir pin is not specified or
does the dir pin not exist at all?

Thanks in advance!

Viesturs

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