Mesa 7i96s PWM outputs

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16 Apr 2023 07:59 #269199 by mwidlok
Replied by mwidlok on topic Mesa 7i96s PWM outputs
Thank You all for Yours help.
Using wiki wiki.linuxcnc.org/cgi-bin/wiki.pl?Editing_MESA_Bitfiles I managed to create custom bit file for the board. In fact the only changes needed is to use Effinix software and load "seven7i96s.xml" project. Editing vhd files, and making changes to project source is then almost the same.

Bitfile created by PCW, also works nice, however I've decided finally to use my own - it removes unused Stepgen modules, and adds direction pin to PWMs. PCW's 7i96s_3pwmd deletes only one stepgen and does not use direction pins for PWMs. In case anyone is interested this is the file: 

File Attachment:

File Name: 7i96s_3pwmd_dir.zip
File Size:226 KB
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18 Mar 2024 14:33 #296206 by COFHAL
Replied by COFHAL on topic Mesa 7i96s PWM outputs
I need a custom firmware for the 7i76 table to control 3 DC servos with +- 10 volts. This requires replacing 3 Stepgens, with PWM-DIR output. Peter could help me.

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18 Mar 2024 17:23 #296230 by tommylight
Replied by tommylight on topic Mesa 7i96s PWM outputs

I need a custom firmware for the 7i76 table to control 3 DC servos with +- 10 volts. This requires replacing 3 Stepgens, with PWM-DIR output. Peter could help me.

1. 7i76 can not do +-10V no matter what firmware you flash.
2. Why are you asking for 7i76 firmware on a 7i96S topic that is not even in the "driver boards" section? :)
So for 1 you would need some hardware to change from PWM to +-10V, and this might be easier using some small boards that do step/dir to +-10V
And for 2 start a new topic on the proper section so PCW can see it.

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18 Mar 2024 17:32 #296231 by COFHAL
Replied by COFHAL on topic Mesa 7i96s PWM outputs
Not, problem I have the mesa 7i33A, I need this firmware to generate the PWM and DIR for the 7i33A.
The following user(s) said Thank You: tommylight

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18 Mar 2024 17:35 #296233 by tommylight
Replied by tommylight on topic Mesa 7i96s PWM outputs

Not, problem I have the mesa 7i33A, I need this firmware to generate the PWM and DIR for the 7i33A.

Oh, nice! :)

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18 Mar 2024 18:24 #296236 by PCW
Replied by PCW on topic Mesa 7i96s PWM outputs
What FPGA card do you have?
 

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18 Mar 2024 18:39 #296239 by COFHAL
Replied by COFHAL on topic Mesa 7i96s PWM outputs
I have Both.But I also need, in addition to the encoder input, to bring both cards to use the other inputs as inputs for 3 encoders, to be able to have feddback to control the DC servomotors.

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18 Mar 2024 19:04 #296241 by PCW
Replied by PCW on topic Mesa 7i96s PWM outputs
I'm still not clear on what FPGA cards you have

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18 Mar 2024 20:49 #296249 by COFHAL
Replied by COFHAL on topic Mesa 7i96s PWM outputs
I have 7i96 and 7i96s Boards

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18 Mar 2024 21:10 - 18 Mar 2024 21:11 #296253 by PCW
Replied by PCW on topic Mesa 7i96s PWM outputs
Do you need encoders also?
Do you need index inputs on the encoders?
Last edit: 18 Mar 2024 21:11 by PCW.

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