mesaboard 5i24 with 7i48 and 7i33

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05 May 2015 17:06 #58398 by mpvriens
Hello,

Have a mesa 5i24 card with board 7i48 working perfect now.
Would like to use the mesa 5i24card with 7i48 board and have flashed SV12IM_2x7i48.72.BIT software, but like to ad an other 7i33 board.
What software to use, or how to change the pin set for the 7i33
any suggestions?

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05 May 2015 19:23 #58400 by andypugh

Have a mesa 5i24 card with board 7i48 working perfect now.
Would like to use the mesa 5i24card with 7i48 board and have flashed SV12IM_2x7i48.72.BIT software, but like to ad an other 7i33 board.


It would be a lot easier to use a second 7i48, is that not an option?

There isn't a standard Mesa firmware that supports that combination as far as I know. It is actually possible that muxed encoders and ordinary encoder modules cannot be mixed in the firmware.

So, you will need a custom firmware, which is something that you can do yourself with some effort. I have made firmwares but I am not sure if my setup supports the 5i24 FPGA.
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05 May 2015 19:50 #58402 by mpvriens
Using an other 7i48 could be an option, if there is no other solution, as i do have the 7i33 boards on stock.
I was looking at the firmware .xml files, and had the idea to changes the pins and functions there, only then there should
be a kind of translation from xml to .BIT file to flash it .
But this is just a guess, as i could't find any documentation around this.

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05 May 2015 20:07 #58403 by andypugh

Using an other 7i48 could be an option, if there is no other solution, as i do have the 7i33 boards on stock.

Would 2 x 7i33 give you enough channels?

I was looking at the firmware .xml files, and had the idea to changes the pins and functions there, only then there should
be a kind of translation from xml to .BIT file to flash it .

The xml files are only used by pncconf and are not part of the firmware building process. The actual pin assignments are controlled by .vhd files:
git.linuxcnc.org/gitweb?p=hostmot2-firmw...9d6b451b72d4ceff6372

Try this page:
wiki.linuxcnc.org/cgi-bin/wiki.pl?Editing_MESA_Bitfiles
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05 May 2015 21:15 - 05 May 2015 21:17 #58404 by PCW
It is possible to use a 7I33 and a 7I48 together. Currently the hm2 driver cannot deal with
a combination of muxed and non-muxed encoders so what you do is use 8 muxed encoders
on the 7I33 (and ignore all the odd or even encoders)

so for example with a 7I48 first you would have

7I48:
enc0
enc1
enc2
enc3
enc4
enc5

7I33:
enc6
enc7 dummy copy of enc6
enc8
enc9 dummy copy of enc8
enc10
enc11 dummy copy of enc10
enc12
enc13 dummy copy of enc12

Not very elegant, but it works...
Last edit: 05 May 2015 21:17 by PCW.
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30 Nov 2019 19:29 - 30 Nov 2019 19:33 #151598 by gaston48
Hello
with a 6i24-25 and the combination 7i48 + 7i33 + 7i44
the encoders refuse to count?
Thank you for your attention
Attachments:
Last edit: 30 Nov 2019 19:33 by gaston48.

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30 Nov 2019 19:47 #151600 by PCW
Your encoder (and PWM) numbering is not correct (they are overlapped)

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30 Nov 2019 20:45 #151604 by gaston48
Oups :blush:
Thank you PCW

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30 Nov 2019 21:15 #151606 by PCW
Note that muxed encoders are numbered per pair, so your 14 (0x0E) encoders would be
listed in the pinout section as

7I48 0,1,2
7I33 3,4,5,6

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01 Dec 2019 11:29 #151647 by gaston48
it works perfectly,
thank you very much

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