[Emc-users] mesa 7i76 and 5i25

2014-05-08 Thread Erik Friesen
The 7i76 datasheet says 8-32v input.  It would be handy for me to use my
40v supply.  Is there some reason this won't handle more than 32v?

Reasons for questioning..

A8499 = 50v 
http://www.allegromicro.com/~/media/Files/Datasheets/A8499-Datasheet.ashx

Input cap = 63v

Question 2 for the 5i25:  How do I go about using mesaflash on linux?  I
tried running mesaflash from the command line but it just says command not
found.

Last go around the linux utility wasn't out, so I used the dos utility and
it took all day to get it right, plus had to program the card in a
different machine.
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Re: [Emc-users] mesa 7i76 and 5i25

2014-05-08 Thread Peter C. Wallace
On Thu, 8 May 2014, Erik Friesen wrote:

 Date: Thu, 8 May 2014 08:35:03 -0400
 From: Erik Friesen e...@aercon.net
 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 7i76 and 5i25
 
 The 7i76 datasheet says 8-32v input.  It would be handy for me to use my
 40v supply.  Is there some reason this won't handle more than 32v?


Yes, the output drivers are rated 40V absolute max and the firmware will
bellyache about it if VField   34V or so


 Reasons for questioning..

 A8499 = 50v 
 http://www.allegromicro.com/~/media/Files/Datasheets/A8499-Datasheet.ashx

 Input cap = 63v

 Question 2 for the 5i25:  How do I go about using mesaflash on linux?  I
 tried running mesaflash from the command line but it just says command not
 found.


If you got it from the zip file you need to
chmod +x mesaflash to turn on the execute permission


so then

sudo ./mesaflash --device 5i25 --write someoldfpgafile.bit

ought to work


remember you need to power cycle the PC to load the new firmware

 Last go around the linux utility wasn't out, so I used the dos utility and
 it took all day to get it right, plus had to program the card in a
 different machine.
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 Is your legacy SCM system holding you back? Join Perforce May 7 to find out:
 #149; 3 signs your SCM is hindering your productivity
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Peter Wallace
Mesa Electronics

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Re: [Emc-users] mesa 7i76 and 5i25

2014-05-08 Thread andy pugh
On 8 May 2014 13:35, Erik Friesen e...@aercon.net wrote:
  How do I go about using mesaflash on linux?  I
 tried running mesaflash from the command line but it just says command not
 found.

zip compression tends to lose the execute bit, you may need to chmod
it. You also probably need to use a full path and a leading dot-slash.
( ./mesaflash ... )

-- 
atp
If you can't fix it, you don't own it.
http://www.ifixit.com/Manifesto

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Re: [Emc-users] mesa 7i76 and 5i25

2014-05-08 Thread Erik Friesen
Thanks for this info.

How might I go about beefing an input to handle a 40v input?  I'd like to
monitor the main supply somehow(with analog).

I have a hot air gun, could change a resistor, or perhaps just add an
external to adjust the divider?  It looks like you use arrays.

@Peter A side note, mesa board routing is very nice.  What Cad program are
you using?  These aren't autorouted, are they?

Silkscreen pinout def's would be nice on these boards though.


On Thu, May 8, 2014 at 9:54 AM, andy pugh bodge...@gmail.com wrote:

 On 8 May 2014 13:35, Erik Friesen e...@aercon.net wrote:
   How do I go about using mesaflash on linux?  I
  tried running mesaflash from the command line but it just says command
 not
  found.

 zip compression tends to lose the execute bit, you may need to chmod
 it. You also probably need to use a full path and a leading dot-slash.
 ( ./mesaflash ... )

 --
 atp
 If you can't fix it, you don't own it.
 http://www.ifixit.com/Manifesto


 --
 Is your legacy SCM system holding you back? Join Perforce May 7 to find
 out:
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Re: [Emc-users] mesa 7i76 and 5i25

2014-05-08 Thread Peter C. Wallace
On Thu, 8 May 2014, Erik Friesen wrote:

 Date: Thu, 8 May 2014 11:52:11 -0400
 From: Erik Friesen e...@aercon.net
 Reply-To: Enhanced Machine Controller (EMC)
 emc-users@lists.sourceforge.net
 To: Enhanced Machine Controller (EMC) emc-users@lists.sourceforge.net
 Subject: Re: [Emc-users] mesa 7i76 and 5i25
 
 Thanks for this info.

 How might I go about beefing an input to handle a 40v input?  I'd like to
 monitor the main supply somehow(with analog).

 I have a hot air gun, could change a resistor, or perhaps just add an
 external to adjust the divider?  It looks like you use arrays.

The input divider is a total of 22K Ohms and 36.3V full scale so a series 
resistor of sat 4.99K would get you to 44.55 V full scale


 @Peter A side note, mesa board routing is very nice.  What Cad program are
 you using?  These aren't autorouted, are they?

No, hand routed with PadsPCB (Mentor now)


 Silkscreen pinout def's would be nice on these boards though.


Not much room unfortunately, maybe a few signals could be labeled


 On Thu, May 8, 2014 at 9:54 AM, andy pugh bodge...@gmail.com wrote:

 On 8 May 2014 13:35, Erik Friesen e...@aercon.net wrote:
  How do I go about using mesaflash on linux?  I
 tried running mesaflash from the command line but it just says command
 not
 found.

 zip compression tends to lose the execute bit, you may need to chmod
 it. You also probably need to use a full path and a leading dot-slash.
 ( ./mesaflash ... )

 --
 atp
 If you can't fix it, you don't own it.
 http://www.ifixit.com/Manifesto


 --
 Is your legacy SCM system holding you back? Join Perforce May 7 to find
 out:
 #149; 3 signs your SCM is hindering your productivity
 #149; Requirements for releasing software faster
 #149; Expert tips and advice for migrating your SCM now
 http://p.sf.net/sfu/perforce
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 Emc-users@lists.sourceforge.net
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Peter Wallace
Mesa Electronics

(\__/)
(='.'=) This is Bunny. Copy and paste bunny into your
()_() signature to help him gain world domination.


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